The Iron Age 1882-11-23: Vol 30 Iss 21

bo” we . ES 1D ae her le. Per air. 1.60 2.00 2.50 3.52 4.50 6.50 oe : / The Iron Age A Review of the Hardware, Iron and Metal Trades. Published every Thursday Morning by Davip Wuttiams, No. 83 Reade Street, New York. Entered at the Post Office, New York, as Second-Class Matter, Vol. XXX: No. 21. The Lawrence Engine. The engravings accompanying this article are of the Lawrence engine, which, as most of our readers know, belongs to the high- speed automatic cut-off type. This engine, for some time past has, in a quiet way, been attracting a great deal of attention from en- | | ‘eran speed of 600 per minute is used. This | brings the number of revolutions of the smaller engines between 275 and 350 per minute. The larger engines run from 120 up to 300. The steam ports are large, and are so arranged as to give as little clearance as possible with the piston valve. This valve, Fig. 6, is unique in its way. It is a ii iy rm Fig. 1.—Steam Chest and Cylinder with the Cover Removed, ineers and power users. Of the high-speed coginks it . one of the simplest. Fig. 3 shows a perspective view of the engine mounted on a stone foundation. In some respects it resembles the well-known Porter- Allen engine. The downward exhaust, the | cylinder supported by one end, and the sin- | gle disk crank on the bent bed-plate, as it may be termed, are points of similarity. | The inventors and patentees, Messrs. Armington & Sims have, however, worked out their details and proportioned their parts from independent study of the conditions| which they intended to encounter. The engines which we illustrate, varying | from 75 to 225 horse-power single, and dou- | ble engines from 150 to 450 horse-power, are made by the Builders’ Iron Foundry of Providence, R. I. The bed plate of the en- j gine is very massive, the quantity of metal used and the amount of bracing em loyed | being exceedingly e. The guides for the | cross-head are partly formed in the bed itself, and by two guide-plates held by bolts | and ce pieces, and in order to obtain room for the connecting-rod in different points of the stroke, the bed between the guides is recessed. The designers had in view when proportioning the internal ribs of the frame, which are 2% inches thick, and distributing the thickness of metal in different portions, the attainment of the | eatest possible stiffness. Those who oa not studied the practice of Porter and other high-speed engine builders have little idea how qarcotnay important aie to koep eve rtion of an engine rigidly in line whe 6 hie speed is to be attained, aud, as the bed-plate is the important and most essential feature of stiffness, the unusu- ally large amount of metal found in this bed | is easily accounted for. In Fig. 2 we have cross and horizontal | sections of the cylinders The cylinder itself | shows no features worthy of peeve notice except in the matter of diameters. The regular sizes, with the exception of 13 and | 20 inch, advance by half inches, the smallest being 6% and the st 20 inches in diam- eter. e 6% has an 8-inch stroke and the! Fig. 4.—Section, End and Top View of Cross Head. 20-inch a 30-ineh stroke. are what would be called square, stroke and diameter being equal, while others have a considerably longer stroke. There are some advantages in regard to this method which the engineering reader will perceive. The piston speed per minute in sizes up to 9% by i2 is below 550. Above that « uniform decided novelty, being double ported and hollow. As shown in Figs. 6 and 7, it has no packing rings, but is a tube of metal with swelled ends. It might perhaps be more ac- curately described as an Allen valve rotated THE LAWRENCE ENGINE, BUILT BY THE BUILDERS’ IRON FOUNDRY, PROVIDENCE, RB. I. about” a horizontal, longitudinal axis. It takes steam, as is the case with the Allen valve, from both ends, thus enabling the amount of travel to be reduced to a mini- mum. Fig. 7 shows the valve in detail, with the valve stem in position. The two heads of the valve are held upon the body by means of four webs crossing each other at right angles, as shown in Fig. 6. After be- ing turned and having the steam edges ; finished, the valve is ground to size with a lead lap and made as nearly perfect as pos- sible. Piston-rod and valve stem are both of steel. These stuffing boxes are Babbitted, however, so that the rods do not come in contact with any metal save Babbitt. In Fig. 1 we have a view of the steam chest with the bonnets re- moved. Its design is some- what peculiar, since by remov ing the bonnet at the side and those at the two ends the whole interior is easily ac- cessible, and the valve may be set without disccnnecting the valve motion. How this is pos- sible is shown in Fig. 1, which represents the cylinder with the Many of the sizes | exhaust pipe in position, but with the whole interior of the steam chest exposed. In this way both the outside and the inside edges of the steam ports are accessible, and the whole work can be as easily performed as on a model valve motion. It will be noticed that the valve rod into the valve with a screw thread, and © putting & jamb nut on at this point ad- justment of length is made easy without the necessity for uncoupling. The valve motion is arranged so that under the action of the auto- matic governor the throw will vary the steam admission from the lead, 1-32d of an inch, to the 3th of the stroke, which is an unusually New York, Thursday, November 23, 1882. $4.50 a Year, Including Postg » Single Copics, Zen Cents. through the whole gamut of heating, cutting | and key and an ordinary strap the defect is discovered it is too late to do/ inch per inch of diameter are allowed in anything, and we have heard of a case! making it. A little point here is worth no where the discovery of the defect and the tice. In heating the disk to make the fit, in stoppage of the engine were so nearly simul-| order to get an equal expansion no small Fig. 2.—Cross and Horizontal Sections Through Cylinder and Valve Chest. ! wide range. The valve in the 125-horse- power engine is 5% inches in diameter, and the deablo adulssion opening gives a port equivalent to 30 inches in length by 2% in width. The extreme motion is 5% inches, with 3 inches as the working throw. A very im t. point is prem | by the pro- portion of the ports and the throw of the valve, namely, that in ordinary work the which come in contact with each other wipe entirely past at each stroke, thus secar- 7a. ~~ Fig. 3.—Perspective View of Engine. ing one condition necessary for equal wear under friction. In finishing the wes chest the valve seats are bored to size, and then finished as carefully as pessible with a reamer, It is hardly necessary to say that the piston-valve is in perfect balance, and practically its friction is that due to its own weight. From an i tion of the valve chest and valve, we are under the impression that the valve is balanced not only against __ but inst the flow of steam. The e port opening and rapidity with which the ports are uncovered keep the pressure in the cylinder well up to the boiler pressure to the moment of cutting off. : The piston needs little mention. It is made very light and has two rings. The piston-rod is held in} the cross-head by a key, the end being turned to a taper of ¥ inch to the foot. x The cross-head is made of cast iron with gibs upon the bottom, which, if wear | takes place to any extent, can be set out with | liners. The wrist-pin is a steel bush, flat- | tened top and bottom, as shown in the sec- | tions in Fig. 4. This bush is held in place by a steel pin running through from | side to side an held by anut. Taken al- together, this is perhaps the simplest method of fitting a pin that has yet been proposed. | The lubrication for the under surfaces is | well provided for. It will be noticed | that at each end of the cross-head in | front of the bolt-holes are two V-shaped open- | ings cut or cast in the top of the head. At | the inner points of these openings small holes are drilled down to the lower surface. The | oil from the oil cups is distributed on to| the lower surface of the upper guide, and as | the cross-head passes, a portion is wiped off by the V’s and falls through the cross-head upon the lower guides, where it is distrib- uted by the motion. Here, perhaps, we might | make note of the fact that lubrication was | one of the greatest difficulties which was en- | countered in the introduction of agent } engines. Methods of lubrication which are perfectly satisfactory for a day’s running of engines only making so or 60 strokes per | minute, utterly break down when 300 aes ' taneous as not to be worth mentioning. | difficulty was at first encountered. As The oiler used on this engine, both on will be seen from Fig. 3, the disk is very slides and for the crank-pin, is that thick on the side of tho connterbalance, made by J. H. Wilkinson, of 132 Com- | while on the opposite side is a mere web. mercial street, Boston, and has been found The plan now adopted is the very simple one to give all satisfaction. The point from of applying the heat entirely to the counter which the cup delivers the oil is exposed balance. It is then found that the conduct to view in such a way that the engineer can | ing power of the metal is such that the ex- see at a glance how fast oil is being fed intv ; pansion is equalized around the hole and the bearing, and by merely turning the cover | its shape is not distorted. The method of of the cup the flow can be increased or di-| holding the crank piu in place is as fol- |lows: About % inch from the edge of {the pin a groove 3-16ths inch wide and |3-16ths inch deep is turned in the end. When the pin is in place the edge of the | metal surrounding this groove is riveted iover. The pin is of steel, while the shaft is } of gun iron. In order to have everything | perfectly true, the disk is shrunk upon the | shaft before it is ground, so that both are | trued up together. The disk, as is usual in such cases, is made hollow at the thickened | part, and a counterbalance weight obtained by filling in with lead. The boring of the holes in the disk is done by special ‘‘ rig,” and it is so arranged that the squaring up for the cylinder face or end bed is made with one adjustment, the rig bolting to and squar- ing with the ways. All surfaces that have } wear are scraped and trued by guides them selves. Our readers may remember that the Build- ers’ [ron Foundry have for many years been in the habit of making heavy guns and other machinery requiring the very highest class of cast metal. This they have melted in an air furnace, and it is this quality of metal which is used for the shafts, bed-plates and other castings for the engine. The average ten- sile strength of the material used probably runs above 33,000 pounds per square inch, and is exceedingly tough, being, what its name would indicate, actual gun metal. The firm also make all their own forgings, even to nuts, &c. minished at pleasure. The oil cup used on| The outboard pillow-block is Babbitted, te crank pin delivers its supply of oilupon a and chiefly remarkble for the fact that the strip of lamp wick, which is carried just low | bearing is in length two and a half times the enough so that a blade on the crank-pin cover | diameter of the shaft. This, like the other Fig. 5.—Eccentrics and Governor. have to be made in the same oe pad when | proper wipes a drop of oil off from it at each , details, bas been oxceedingly well worked lack of oil even for a few secon is sufficient to cause heating, and in some cases seizing. It is said that on fast torpedo | boat engines a failure in the lubrication a of time | revolution. } out. Fig. 8 shows the two ends of the ex The connecting-rod presents no unusual) centric rod. A very neat device is em features. It is very heavy, as it should be ployed for keeping this rod from being for quiet running, and is fitted up with gib | thrown off from the pin on which it The shaft i ihe snaitis and seizing within a few seconds ; that when | put in by a shrink fit, and 2-roooths of an <= : — ea = ee , hi ~~ ise — — n+ * += =: ey ~ M|) TH ' a 7 al 2-3 = i=. ee ee ee ss —e a a THE IRON AGE. November 23, 1gs¢. 3 a a ae ern isha ae el meee. anheeinanaee. ANSONIA The Plume & Atwood | rig i tor ren ine er ag te aenn BRASS & COPPER CO., Mfe.Companv, | WASHBURN & MOEN ‘MANUEACTURING 0, No, 19 Cliff Street, . ? S cemaaiele ap = — ent } ™ 3 seinen tong See a Waterbu fan Co SHEET and ROLL BRASS and WIRE, | <ciitpiea sinc ; eee. s| German Silver and Gilding Metal, | Sie “ie ne BRASS AND COPPER aterbury - $400,000. Copper Rivets and Burs, Be ce gS gh IN Sheets, Bolts, Rods, Wire, &c. Sheet, Roll and Platers’ Brass, Copper Electrical Wire, Pins, ; GERMAN SILVER, Seamless Brass & Copper Copper, Brass and German Silver Wire, Brass Butt Hinges, Jack Chain, Tubing. BRASS AXD COPPER TUBING, Ansonia Corrugated Stove Platforms.} COPPER RIVETS & BURS, Eerosene Burners, |# PURE COPPER WIRE |. BRASS KETTLES, Lamp Trimmings, &c. ee ean iv a ee i — Door Rail, Brass Tags,| 18 Murray Street, New York. |Z meet tia oigetctey ict op PERCUSSION CAPS, 13 Federal Street, Boston. eee | ss ANSONIA * REFINED POWDER FLASES. 109 Lake Street, Chicago. ee , be Rolling Mill, Factories, INCOT COPPER. ee ee aa oe hae THOMASTON, Ct. | WATERBURY, Ct. IRON and ‘STHEET, a a ee Gartridge Metal in Gheste or ele 6 SS ea woe Steel Rano fron ts ete soa iis pees Ronse gues. Agents for mn end excia. Operators of the PATENT CO TINVO PHELPS, DODGE & CO.,|coreweu me. covexine ot soort-|Bridgeport Brass Co,,|swiraitc kan Tes See Sees IMPORTERS OF ing Goods. MANUFACTURERS OP Sarees haere ages Wire of ai i rd Goth, Bitecuste sacri Machine a erie wis DEPOTS: Millis At Pp’ D re, 2S con to Pattern for ‘or piston of Glock, stamps of Norway Iron, TIN PLAT E, 296 Broadway, New York, WATERBURY, Sheet and Roll Brass, Birtigntened and Cut 10 aay feat. antec! Orin stine ¢' Wire, jive, Patent | Seimei preted dot aioe New Pe “16 Clif, and 241 Pearl Sts. . 125 Eddy St, Provid R. |. Conn. j ROOFING PLATE, y es . Brass & Copper Wire & Tubing, WAREHOUSES: | Chicane, 107 and 109 Lake St. Sheet Iron, Copper, Pig Tin, Wire, German Silver Metal and Wire, “NATIONAL WIRE AND LANTERN WORKS.” Zino, &o. j Copper and Iron Rivets. mm Detroit Copper & Brass| Copper and Iron Rivets. HOWARD & MORSE, . ' LANTERNS and TRIMMINGS, | KEROSENE BURNERS, COPPER AND BRASS.| — Rolling Mills, — |eryrewees|nimorwroes Inet cpogg” “TUBTTAR LANTERNS eee BRAZIERS’ AND SHEATHING COPPER, | manufacturing Metal Goods, WAREHOUSE, SCOVILL MFG COJROLLED, SHEET & PLATERS’ BRASS| 2rsdccpere, conn. | 29 murray at ¥. ¥. on GERMAN OR NICKEL SILVER, B R A Ss S Copper Wire for Electrical and other purposes, HARRISON WIRE C0 ' Boss. Bras HINQES, WIRE, GERMAN SILVER. and German Silver Wire, Oopper Rivets and Burrs, PHOTOGRAPHIC GOODS. | copper sortoms FOR TEA KETTLES AND BOILERS, The Boss, Dashboard. ST. LOUIS, MO., B U T T oO | Ss a Cor. Larned & Fourth Sts., Detroit, Mich, MANUFACTURERS OF ALL KINDS OF CLOTH AND METAL.' DEPOTS, F 419 & 421 Broome St., N.Y. eae ROM E a STE E ~ AN o i RON Wlawet,Chiage Meron Gye” | Bragg, Gilding Metal, Cop 9 9 = T DICKERSON, VAN DUSEN & CO..| per and German Silver | BAA Mist amm oun alam Importers of (in Sheets, Rods, Tubiug or Wire), Tin Plate, Pig Tin, Sheet lron, Copper,| COPPER & BRASS RIVETS Wire, Zinc, Etc., , AND BURS. Holmes, Booth & Haydens, ABRAM 8. HEWITT, President JAMES HALL, 29 & 31 Cliff &t., cor. Fulton, Rome, New York. WATERBURY, CONN. WM. HEWITT, Vice President. E. HANSON, Secretary. KERSO¥ & CO,, Liverpool, NEW YORK. @ Yo ne enim ae ng IRON COMPANY. A. CG. NO min hi OP , sass, Comper & Gorman Sliver, ; ggg N. J.. Manufacturers _ ae RON and STEELWIRE NOVELTIES IN BRASS AND OTHER METAL GOODS BRASS & COPPER WIRE, othe GRADES, su onan a ane sg sae Pen eto ee ncn ong] Tubing Copper Rivets & Burs. / BRIGHT, ANNEALED, COPPERED, TINNED AND GALVANIZED Binds, om Sheet irom. Bel oF Beka een of thet Meta sere, scpeathily cima a,| BRASS & IRON Iron and Steel Wire Rods; prompuy given JACK CHAIN. DOOR RAIL, | EXTRA QUALITIES OF BAR IRON AND RODS. WORKS ROEBLINC’S jew York Office German Silver Spoons, Best Qualities of Gun-Screw and Charcoal Iron Wire; : SILVER PLATED FORKS & SPOONS, Crucible, Siemens-Martin and Bessemer Steel Wire. Wire Straightened and Cut to a a? ap TRENTON, W] a le () eg Warehouse, Kerosene Burners, &c. N. J. = 117 Liberty Street. JOHN DAVO L & SONS, Mladeiphia Ofice, JOHN HEWITT, Agent’ «” North He JOH j Brooklyn Brass & Copper Co., THE JOHN A, ROEBLING'S SONS CO, cnr aie, ios To} IRON AND STEEL WIRE ROPE WIRE ROPE GALVANIZED Tron and Steel Ne dbn wernt Rew Fore street on torte n. (et es ae _ Ot, Eenteee, Ac. ren, Stool and Copper, | Telegraph Wire, WIRE = /PASSAIC ZING €0,| _ Muress: HAZARD MFG. CO., Wilkesbarre, Luzerne Co., Pa. Hoisting ictnien .. = M k Wi . ror Manufacturers of kinds, for Ferries, arket Wire Market Wire, Fence Wire, FE LT & Ni & GU i L L EA U Ni E. shi mexing. ome or | Vineyard Wire, |Boaen wire oun wire] Pure Spelter Suspension Bridge Cables. Rivet Wire. ior a as FOR Carlswerk, near Cologne, Germany. CALVANIZED WIRE CLOTHES LINES. Cartridge Brass, Gas Fixtures, Bronzes PATENT CRUCIBLE STEEL WIRE, AND ALL FINE WORK, BRODERICK & BASCOM ROPE (0.,| cavanisers @ brass Founders SIEMENS-MARTIN AND BESSEMER STEEL WIRE, MANULOTUARRS OF MANNING & SQUIER, Gen Agens,| CAL:VANIZIOD TECEGIAP I WIRE 113 Liberty Street, N. ¥. WIRE ROPE Geo. W. Prentiss & Co., sua, uch os sane tac eh Eire. SN ED is sn BRODERICK& BASCOM Rope Co. ae wwiR:EeE ROPE OF EVERY DESCRIPTION, TELEGRAPH CABLES. oldest house im the braneb on the Con- Contr the German and Foreign veigm goveram The old tinent. Om rath 4 Asem © pr WERE, COLDUNE. gents for U. 8. and Canada PERKINS & CHOATE. 23 Nassau St, N. Y. IRON WIRE ROPE. STEEL WIRE ROPE, 728 N. Main St., St. Louis, Mo. WORCESTER WIRE CO. eat Manufacturers Plated. Also GUN SCREW WIRE = A. eS Oe kK RSAEs 2 _ IRON AND STEEL Of all sizes straightened and eut to order. << o eS 3 ee SE. =s Qos < 7 = | C= —— = =.- SK 6 wd x] 2 od 7 i c's - = of 6 edie en OF EVERY DESCRIPTION. WORCESTER, MASS, Savion, ant wearrining peraininace wire wading. | 919 so 998 N- Main St, ST. LOUIS, BO. invites, BER BEF EA. CAL ek a see THE IRONSA GE. 3 November 28, 1862. CART chee? MOE TN, hooks. This is a small sicel pin passing amount available for these surveys for tis through the outer end of the hook and held fiscal year 1882-3 is $12,000. The amount A N Manutactarers of down bya spring. This pi i squire re 883-4 f int- \ pring. is pin falls into the required for the fiscal year 1883-4 for print ‘ STEEL WIRE for all purposes and STEEL SPRINGS of every description. groove shown in the bearing in the side view, ing and issuing oharts for the use of navi- & CO esa : : ‘ f ae 5 oe and prevents the arm from jumping out. gators is $3000, The compilation of the new "” When it is desired to lift it out, of coursethe outline map of the territory of the United a —_— <= = ~ Manufacturers of all 2 pin can be pulled back by meansof the hand. States west of the Mississippi (scale kinds of > Probably no portion of the engine deserves | I-2,000,000th) has been completed, and the > more careful attention than the valve motion, compilation of a now outline map of the Japanned, Brass & = : United States, on a scale of io oba,cauth, Tin Plated es ro) has been commenced and some progress Sy made. Referring to the geographical sur- ’ BIRD ie veys west of the 1ooth meridian, Gen- re ~e eral Wright reports that no field work was done during the year, as there were no funds available for that purpose, and that The Lawrence Engine.—Fig. 6.—The Piston | the duties of the office have been confined to Valve. the reductions and computations necessary for putting unfinished map material in which is controlled by an automatic governor | shape for publication, and to the distribu- of a well-known type. In its details, how- | tion of published maps and reports. He ever, it departs entirely from ordinary prac- | says that the amount originally appropriated NEW YORK. |tice. Instead of having one eccentric there | for closing the work will not allow the pub sumamm, | 27° two, each of which is movable and con- | lication of sufficiently large editions of the trolled by the action of the weights carried | unissued maps, nor furnish reissues of those in the regulator pulley. Fig 9 is a sketch of | maps now out of print and which have un- one of the balance weights and the two eccen- | dergone revision, and an estimate of $5000 trics, laid together in such a way as to make | is made to cover the expense of such publica- their relative actions most easily understood. | tin. These parts, it must be remembered, are} A number of surveys have been made in all carried on the main shaft, C and B being | California, Nevada and Washington Terri- movable upon the shaft itself, and the weight | tory, and the estimate for the amount re- E carried on a pin going through a hole at A | quired for military surveys, reconnoisances by the regulator pulley. In action the weight | and surveys of military reservations by the E is thrown outward. This, of course, by engineer officers attached to the various means of the link, will carry the outer headquarters of military divisions and de- eccentric B in the direction of the arrow. | partments is $50,000, being an average of VILISISITITTN WISSSS: 254 Pearl St., NEW YORK. Also Patent Tempered Stee! Furniture Springs, constantly on hand. 934, 936 and 938 West 99th Street, - ~ - ~ - POWER PRESSES, RIVET MACHINES, Special Machinery to Order. BLAEE & JOHNSON, WATERBURY, CONN. |\TIRON and BRASS RIVETS, STUDS, PINS, &c., For Manufacturers of Light Hardware. ee ee es : POPE,COLE & Co. BALTIMORE COPPER WORKS, No. 57 South Gay St., BALTIMORE, MD., Have always on hand and for sale INGOT COPPER, Also Cakes, of unequaled purity and toughness. Fig. 7.—Method of Fitting Up the Piston Valve. At the same time the inner eccentric $5000 for each of tho nine military divisions is carried by the further link in tho! and departments west of the Mississippi and opposite direction. The result of this $5000 for publication of maps. is that one eccentric changes the throw | SOME STYLES OF G. Gunther, Manufacturer of Patented Brass, Sliver Plated mart t Hs Sean end lepanned I, BIRD CAGES. Can be nested for ex- port shipments. 46 Park Place, NEW YORK. a and to tn patterns unsurpassed Lists on FOUNDRYMEN’S METALLIC Pattern Letters and Figures, FINISHED PLOW SHAPES MADE BY GAUTIER STEEL DEP’T, JOHNSTOWN, PA. Send for full illustrated list containing entire line of Western and Southern shapes. (No. 22.) and the other the virtual center of the combined eccentric. For the sake of perfect balance another weight is used on the opposite side, which is fastened only to the inner eccentric C. This equal- izes the strain and reduces the friction of turning it. When in their proper positions, however, it must be remembered that the long arm of the weight has its link attached to the outer eccentric B at its narrowest | point. This weight, having an attachment on both sides of the center, of course re-, volves the two eccentrics in opposite direc- tions. The opposite weight, however, has only one attachment. Fig. 5 shows a diagram of the eccentrics and two weights in position attached to the rim of the wheel. For clearness the spokes are omitted, and also the eccentric strap, which, it must be understood, fits the outside of the outer) eccentric. As the weights fall inward, the two eccentrics in this figure will move in SS Proposed Centennial Cotton Expos!- tion.—A Centennial Cotton Exposition, to be held in 1884, is warmly advocated by F. C. Morehead, president of the National Cotton Plauters’ Association, and other gen- tlemen in the South who are deeply im- ressed with the success of the recent exhi- ition at Atlanta. The association, while assembled in convention at Little Rock, Ark., voted unanimously in favor of the proposition, $2,500,000 to be raised in fur- therence of the object, of which at least one- ficth will be required as a subscription from the city securing vhe location. Prominent gentlemen from the South have visited New York within the last few days for the pur- pose of ascertaining the views of merchants and manufacturers respecting the feasibility of the undertaking, but it does not appear that they received much encouragoment. They were reminded that all the various To put on patterns of castings. All sizes. Re- 4uced prices. Mnfd. by H. W. Knight, Seneca Falls, N.Y. THOMPSON ’S PATENT FoR ED WET PULVERIZATION. OF ROCKS, ORES, ROLLING MILL FIX AND OTHER MATERIAL, EITHER COARSE OR TO AN IMPALPABLE POWDER, Fig. 8.—Eecentric Rod. Ss EP E P. ° ASKE R, they are pressed outward by centrifugal | were fully discussed at Atlanta, and that force, the eccentrics are revolved relative to there have been no new inventions of SOLE MANUFACTURER, each other in the direction of the arrows. any importance since that time. Admit- The advantages attained by & peculiar ar-|ting the force - oa een, we . * t are very great, and the variation cannot but coincide wit resident More- Care of MORRIS, TASKE R & Co., Limited, of ceed from “aun light load, say head in the belief that substantial advan- that of friction only, up to the total capacity tages would arise from a renewed offort PHILADELPHIA, U. S. A, directions opposite to the arrows. When ' questions affecting the interests of the trade of the engine, it is said, does not exceed 2 per | ‘‘ to place before planters and farmers the cent. The springs, of course, arenotshown most approved appliances for successful in either of these Saereeen. These one ap- | Centrifugal i purpose * lied in an entirely different manner from I thoroughly and ane — e e rolling ball for the of P ulverizing. Tested thos usually put upon this class of machin- | 7 a om i to yield @ greater product of pulverized material of equal| ery, They are seated upon a small bracket, fineness in a given time with less wear, less power, less first cost and less cost for | through which a rod passes and takes hold of repairs than stamps or any other pulverizer. a cap at the opposite end, thus putting the | spring into compression entirely, instead of extension. Upon this feature the designers | lay great stress, as it enables them to pro- | duce a much more durable and regular spring | eas Bergen Port Spelter. HOWARD EVANS. MINES : WORKS & FURNACES, Labigh Valley, Pe. Barges Sust, &. 2. than they could otherwise obtain. The only Miners and Manufacturers of The stop valve is not unlike many of those PURE in use by engineers, but its details aro ad mirably worked out, and it has given, in ser- vice, a great deal of satisfaction. Messrs. Armington & Sims, of Providence, are the designers and patentees of the engine, and certainly deserve great credit for the ingenuity and practical skill which they have; Fig. 9.—Diagram of te Governor and applied to it. The Armington & Sims Co. ali diet J. 4. EMERICK. OO : , MOLDERS’ TOOLS, FOUNDRY FACING, MOLDING SAND, LEHICH RE SPELTER p From Lehigh Ore. 7 Especially adapted for FOUNDRY SUPPLIES, manufacture the smaller sizes with double | Cartridge Metal and German Sliver. J. A. EMERICK & CO., a up to 75, while the Builders diversified farming.” That which inures Also manufacturers of ron Foundry, as we have said, construct } a Oe in ecit . 1056 to 1076 Beach St., PHILADELPHIA. engines from 75 horse-power upward of the to the advantage of the cotton interest is a ‘ BERGEN PORT OXIDE ZINC. type we etteeke | contribution to the nationa! prosperity. - a wearing propertios © ss ESTABLISHED 1837 : ee by BERCEN PORT ZINC CO _- INCORPORATED 1876. | Resources of Algiers.—Algiers is said to ; . . H. 6. Cuan, Gos’. C. F. Porz, Treas. Work of the Engineer Corps. | abound in deposits of copper, silver-bearing id the Con- E. A. FISHER, Agent, 13 Burling Slip, N. Y. lead, zinc, and eepecially iron, and one of A Wate rb u rv Mt C General Wright, Chief of mocinees in eee mines a re jauet a — : : . kes stimate of $55,- of iron ore per day. Materials for con- rf LY. caw wents, A Means S- Dag ae aspen te et ee eee te, ues Se “8 : r + and censtruction of the Washington Aque-|@re also abundant, and salt i¢ found in & . W ATERBURY, CONN. duct. The estimates for the care of public | great many places. The number of men em- ILLINOIS ZINC CO., buildings and grounds in the District of Co | ploy ed T the various apeeeareney qacense fh =x lumbia amount to $232,000. General Wright | 35°. BO CUIMTSHIOR SS tOUS6SO ‘ it @ Tt ropriation. of $150,000 | creased largely within the past few years, Le a 3 MANUFACTURERS UP Re Ass Ccoods. Styeld be iain tiep-Aeseanieteitehi and - |but the greatest future Capescansens , are OTL = A veys and contingencies for river and her- based a ine ene eyards, and the / = — : ts f. hich there is no /| extent of lanc devoted to vines is about §0,- 3 & SHEET ZINC FOR STEEL REFINERS tercial appropriation, and of this sum |000 acres. Public works also have reached / wit ¢ 3 ° nam should be for surveys and $100,000 considerable importance, and there are now u rf a =. WE OFFER AUSTRIAN CHARCOAL HAMMER STEEL, |for contingencies, including incidental re- | 0528 mules of highway and about G00 miles ' - PERU, ILLINO In Flat deli in titi i . pairs of harbors. The preparation of the | of railroads in course of const: uction. Bars, deliverable in quantities to suit, in bond or duty paid. ; e I ' d | _ final report on surveys of Northern and | ; invited, £. A. FISHER Agent, Correspondence solicited. Sample Bars on hand, Sedietaiiie lakes oo been completed, and | ee cane produced i. Louisiana me , 2 A, a ee ’ it ig now nearly half printed, ‘ater-level | Mississippi occupies 150,000 acres, and yie PF WOLTMAN & MICKERTS, No. 5 N, Second St. St. Louis, Mo+| sng ne ny A Ea Continued, The | aunually 208,750 hogsbonds of pugar. | 18 Burling Gig, How Fork. 4 THE IRON AGE. November 28, 1882, OGDEN & WALLACE,|A. B. Warner & Son,| OXFORD IRON CO..|W. D, WOOD & CO’S 85, 87,89 & ¥1 Him St., New oun” IRON MERCHANTS, (B. G. CLARKE, par Iron and Steel 28 & 29 West and 52 Washinaton St. C ut N ail s wee rez amenzoon esswocs 1 IRON & STEEL BOILER PLATE. SPI K ES. BLACK DIAMOND STEEL. BOILER TUBES, —~ iene of Oast and Machinery Steel constantly| Angle, Toe and Girder Iron, Boller and Tank Rivets. VE SNOW SHOES Eas ee ee a ae Sole Agents for the celebrated J « 8. SCRAN TON, Sales Agent, Pp AT ENT . E niet LUKENS, PENNOORS, 81, 83 and 85 Was = ' a lt ' Planished Sheet Iron. . Brands of Iron, Alsoal! descriptions of Plate, Sheet, NEW YORK. and Gasometer Iron. Special attention to Locemotive PIERSON & CO.! 24 Broadway, New York City, lron & Steel. COMMON & REFINED IRON, Hoops, Rods, Scrolls, Bands, Ovals, Horse Shoe, Nail Rods, Steel, &c. Se ee ae ee Patented March 14th, 1865 ; April 8th, 2873 ; ' JOHN W. QUINCY & CO. Sept. oth, 1873 ; Oct. 6th, 1874 ; Jan. rz, 1876. STEEL TOE CALKS. aren. Fire Box Lron a specialty. 5 Guaranteed fully equal in all respects to the ROME MERCHANT IRON MILLS,| 98 wuntam street, New York. Extra Ouality H wate Eesaoce {Anthracite & Charcoal Pig Irons,| 'MPORTED RUSSIA’ IRON, re Say Romegonsovs Sted Bar Iron, Bands and Fine Hoops.| *reushe serap, out Naite, Copper, FOR SALE BOIL F A PL ATE BLOCK TIN, LEAD, SPELTER, ANTIMONY, NICKEL, &c. als, Half Ovals, Half Rounds, poxngen and by all the principal Horse hoe. iron. Also from Charcoal @ superior ualit of Iron branded J.@ Ali pud balis re : HARRISON& GILLOON METAL DE ALERS)| 8TE£t PLATES, al! descriptions. re ee Ee eer Cut Nails and Spikes, Plate and Sheet —)& hammer. Orders may be sent to ~y F- Mill or ED oe. Bisset, New Yorke RPENTER, our Agent, at 59 John IRON AND METAL DEALERS, 558, s60, s6a2 WATER 8T., & 302, 304, 3066 CHERRY ST., TH E U N IT E D STATES, lron all descriptions, And at their Offiec, , UMMOND, es FOX & FOX & DR have on hand, and offer for gale. ‘the following :, as 111 Water Street, PITTSBURGH, PA, SHOENBERGER & CO., Pittepate®, RAILWAY Seotch and American ae nm, Wrought, AND Wangan jus sif topper Sompetton Bete ey ANSE, _ KEYSTONE ROLLING MILL, Limited, > OLD RAILS, SCRAP IRON, STEEL, Manufacturers of ROLLING MILL BURDEN $ oe IROoOW PITTSBURGH, PA. Pittsburgh, - - - Pa. MATERIAL. HORSE SHOES. NORTH BROS.,|Bonnell, Botsford & Co.. ene lron, Nails & Spikes, iT) ayy Fine Light and Medium-Weight GRAY 90 Bockman St., Now York City, Burden Best Pon Sher Ines to order. MANUFACTURERS OF Orders ae filled from stock. ABEEL BROS., 190 80UTH 8T., | . ae 365 WATER at, § NEw YOR “ULSTER” IRON, ‘‘CATASAUQUA” IRON, ALLENTOWN SHAFTING, And full assortment of sizes of the best brands of REFINED IRON, Band, Hoop, &croll and Angle Iron. Cast, Spring Toe-Calk 8. Steel. TELEPHONE CALL, ** NASSAU, 379.” A. R. WHITNEY & CO., YOUNGSTOWN, OHIO. MANN & JONES, CORRUGATED AND CRIMPED IRON LERON Caivanized Sheet Iron, lron ROOFING & SIOING, |" & tanover 8, ew York, ‘izd.tce"| GENERAL IRON BROKERS Our specialty is in Best ee = Refined and Common. Galvanized W and Fence ; Galvanised and Sena’ ther alvanized Rod and Bar [ro: Boor. Nails, iron, Salve Chain, Galvanised iron “MOSELEY IRON BRIDGE AND ROOF Co., © Bey Gtiicct, Sun Yeoh, And Commission Merchants. W. S. MIDDLETON, Manufacturing Iron Used in the Con- struction of Fire-Proof Buildings, Boiler Rivets. ridges, &c. ts Carnegie Bros. & Co., Limi Wrought tron Beams, and Channel iron. Bay! CORRUGATED SHEET IRON ay 5 and Iron Wor us Steel : Galvanized, Plain or . Fiber get Compreeend Gd AES. COTEN| ale Gheveccl, Best Safssl ond Gomme | Broker in Machinery & Iron Wrought iroe Pipe, 2. F. Rat Coe wie Bex SHEET ro0N. | /he Burden lron Company | Hoops, hy 444 Rt alae mance “Smeatatiilion By OY \ ~ FORSTER’S CRUSHER a : PULVERIZER, mate for erecting tructures of descrip-| _C No. 1,C H No. 1, C H No, 1 Flange, Best sade Troy, N, Y. : w.s. nitibicattlipate xs ee st., N. W. tion. ks containing cuts of all [ron made sent Flange Fire Box, Circies. GN i ee ee ° **sahuple pieces atoice. Pt case address ae = oe *. os For Bars, Plates, Sheets & Rods WM. McFARLAND, m Street, New Yor | alvanized or Tinned to I. of Double Extra Quality Iron. eee: sone Ce tien eens quotations sent upon application. . U L ST E R ~ won owes wr as rs lron and Brass Founder, BORDEN & LOVELL WILLIAMSON & BURDEN’S _ TRENTON, N. J. » | JAMES co., CANTON BLOOM ARY CO., | Chilled Cast Wire Dies a Specialty Any size or style made at short notice. SCOTCH AND AMERICAN PIC IRON HB. & $. Bar Iron. —F. W. JESUP @ CO. > |American & English Refined Iron. | Railway ‘Supplies and Equipment. GRAY IRON CASTINGS. JOHN KEPPELMAN, Reading, Pa., Herewith th gives notice that he has opened a Job- aE , and is ready to receive orders for ds a ht Gray Iron Casti also, for Commission Merchants 70 & 71 West St., yiny Serdets} = = ss New York.| No. 69 Wall 8t., New York. STON BROS & C0. hgeite. NASH A TRON AND STEEL CO, Agents for the sale of “SEES. nowoomnzoos | ev every description of Machinery. Orders prompt Fall River Iron Co.’s Nails, ULSTER IRON WORKS. EGL EST ta, to) NEW YORK CITY | TA w ste SIDR, be ay PP ERAEan, onctue rs, Bands, Hoops & Rods. 90 Broadway, New York. iat GLENGARNOCK AND CARNBROE SCOTCH PIG IRON AND VOUGHT & WILLIAMS, For spot delivery and for prompt or forward shipments to New York, Boston, Philadelphia, Soden me ny’e Tuckerman, Mulligan & Co 288 Greenwich Street, Baltimore or New Orleans. For sale in lots to suit by ° LTS NEW YORK, JAMES LEE & CO., Sole Agents for the United States. WILLIAM H. WALLACE & CO., oat ee Dealers in __ | 72 Pine Street, NEW YORK. 101 Milk Street, BOSTON, MASS Nos. 21, 23, 95 o7 West Lake Bt. Chicago, Ml Horse Shoes, Horse Nails, LEECHBURG IRON WORKS. BELLOWS, FORGES, VISES KIRKPATRICK & CO., FINE SHEET “IRONS, Tuyere Irons, Carriage and Tire Bolts, (Refined Cold Rolled, Show Card, Stamping, Tea Tray, Polished, Shovel, Ferrule Irom, @c.)” IRON MERCHANTS Cor, Albany & Washington Sts. IRON AND STEEL. BOILER PLATE. Lap-Welded Boiler Tubes, &c, &c. Agent fer Otis’ celebrated Cast Steel Boiler Pane The Costesville lron Vo. The Mis. NEW YORK OITY. Wx. . Wassace wa sean. | Sou tatnae’ = = enn RASPS AND FILES, a NATURAL GAS USED AS FUEL. DANIEL W. RICHARDS & CO, Drilling Machines, Hammers and | 70S ARLHS woBEAAnD FOREIGN AND DOMESTIO = - “Sheridan” & “Leesport”? Brands Pig Iron, SCRAP IRON, RAILS, STEEL AND METALS) =: 2.22080 | .. “noe ccdenon seen Reet Yards and Office, 88 to 96 Mangin St., NEW aa na Pie "r AMERICAN hoe + rin wiser. Avie re Pic, - STOCK AND TO ARRIVE. _ Daxter ICHARDS. ORTON MITH. Ss r oO n 9 ar ecis, Bes rands CUg Street, New York City. PASSAIC ROLLING MILL CO, Wrought & Cast Scrap tron, JARES ante TOSS, ROLLED IRON BEAMS, OLD METALS. |SCOTCH AND AMERICAN PIG IRON. Channels, Angles, Tees, Merchant Bars, Riveted Work, Forg 457 59 Water St. NT OF 353 £53 Soucm sent NEW YORK. Bar Iron, Car eo od aaiedt Rails. and Railroad Supplies. ings, Bye Bars, &e. PATERSON, N. J. ss som 65, Aster He Aster House, i Now Yeex, York, ' CUT NAILS, SOLE AGENT ‘a areas Rolling Mill. WHITAKER IRON COMPANY oan oe NG, a -VA., MANUFACTURERS O ET ANK AND FIRE BED J. LEONARD, 36 pr eerees STREET, CHICAGO. . ; 445 to 451 West ot. 177 & 1 79 Bank St. ” Joux J. ALEXANDER BURNS, Manager. er. Hot Pressed Nuts, Bolts, Washers “ho sie hlbe is ny THE JERSEY CITY GALVANIZING CO., dks ceenaittedinbaaiedien J HORSE SHOE IRON, CALVANIZED MATERIAL OF OF EVERY DESCRIPTION. Galvanized Sheet tron—Best Bloom, Best Refined s I Gommon. gg ee Round, Square Band and Hoop Iron; ee. Toe Calk Steel, DOVER IRON CO.8 Som, Ovals, Half Ovals and Fiats. BOILER RIVETS, | All Biaes ~~ Boiler Brace Jaws, Socket Bolts, &c DANI lES Ss i COON Bae vn one % BOILER "PLATES J AND SHEET IRON, ne pe LDED BOILER FLUES, 1% to 5 inches. meter abn eet ee Nails & Spikes. ac 4 and Painted. Irof Corrugated for the Trade pine ing Works Lebanon itoling “Mille.” Cheste? Sheet Iro dpectal Galvanized, Black Pipe ap and Tube Co. af pea e Rens. Iron & Stee) Sa Cosrageted, Chast oo Ty Geistes furnished on applica eee ee ecen*t*! Homogeneous Steel, Boller | works GREEN AND BAY STREETS, JERSEY CITY, M. J. OFFICE AND WAREMOUSE, 98 JOHN STREET, NEW YORK FULLER BROTHERS & CO. 139 Greenwich Street, New York. November 23, 1882. a ———————— Siemens’ Regenerative GAS FURNACE. RICHMOND & POTTS, 119 8. Fourth St. PHILADELPHIA, PA. HENRY LEVIS & CO., Manufacturers’ Agents For Iron and Steel Rails, Car Wheels, Boiler and Sheet irons = General Railway Old Rails, Axles, oa a Wheels’ bought and sold. 934 8. 4th 8t., Philadelphia. The Cambria Iron and Steel Works, Having enjoyed for over TWENTY-FIVE YEARS the reputation of producing the best quality of RAILS, have now an annual capacity of 230,000 Tons of Iron and Steel Rails, Splice Bars, &c. ADDRESS, CAMBRIA IRON COMPANY, No, 218 South 4th Street, Philadelphia. Or at the Works, JOHNSTOWN, PA. Or LENOX SMITH, New York Selling Agent, 46 Pine St., N. ¥. THE PHCENIX IRON CO., 410 Walnut Street, PHILADELPHIA. Manufacturers of Wrought Iron Beams, Deck Beams, Channels, Angle & Tee Bars, STRAIGHT AND CURVED TO TEMPLATE, Largely used in the construction of Iron Vessels, Buildings and Bridges. WROUCHT IRON ROOF TRUSSES, CIRDERS & JOISTS, and all kinds of Iron Framing used in the construction of Fire Proof Buildings, PATENT WROUGHT IRON COLUMNS, WELDLESS EYE BARS, and built up shapes for Iron Bridges. REFINED BAR, SHAFTING, and every variety of SHAPE IRON made to order. Plans and Specifications furnished. Address DAVID REEVES, President. NEW YORK AGENTS, MILLIKEN & SMITH, 95 Liberty Street. BOSTON AGENTS, FRED. A. HOUDLETTE & CO., 19 Batterymarch &t. ALAN WOOD & CoO., MANUFACTURERS OF Patent Planished, Galvanized, Common, Best Refined, Cleaned and Charcoal Bicom PLATE c& SHEHT IRON. No. 519 Arch St., Philadelphia, Pa. licited cially for Corrugated, Gasholder, Pan and Elbow, Water pipe, Smoke Stack, Tonk and Boat Iron ; Last, St Boat Iron Last, tamping, Ferruie, Locomotive Headlight and Jacket Irom, 0 Ferruie, Locomotive Headlight and’ Jacket Iron. Iron. BIAS. ROWLAND & CO. Kensington Iron, Steel & Nail Works, tron a specialty; algo Rounds, Squares, Misia, Banda. ead Hoop PENCOYD IRON WORKS. Pa. & P. ROBERTS & CO., 4) 990 North Delaware Ave., - PHILADELPHIA, Manufacturers of ANVIL BRAND REFINED MERCHANT BAR IRON. CAR ASELES. BAR, ANGLE, TEE AND CHANNEL IRON. Also, the James Rowland & Co. Koomneton Yr ® ails, cut from Office, No, 265 S. Fourth St., Philadelphia. Agents for the sale of Glamorgan Pig Iron. J. WW. PAXSSON ceo O., DEALERS IN MOULDING SAND, 102! North Delaware Avenue, PHILADELPHIA, PA., MANUFACTURERS CHARCOAL FACING, ANTHRACITE FACING, SOAPSTONE, LEAD FAOING, RIDDLES, SHOVELS, STEEL BRUSHES, X MINERAL, XX MINERAL, IXL FACING, “ALLENTOWN ROLLING MILL COMPANY, Manufacturers of Rails, Bars, Axles, Shafting, Fish Bars (Plain and Angle), Spikes, Rivets, Bolts and Nuts, &c. Bridges and Turn Tables. General Office, 237 South Third 8t., Philadelphia. Works at Allentown, Pa. JAMES C. BOOTH. THOMAS H. GARRETT. ANDREW A. BLAIR. BOOTH, CARRETT & BLAIR, Analytical and Consulting Chemists, 919 and 921 Chant St. (10th St. above Chestnut St.), PHILADELPHIA. PA. Established in 1836. Analyses of Ores, Waters, Metals and Alloys of all kinds. A special department for the ANALYSIS OF IRON AND STEEL, th all the a tus and appliances for the rapid and accurate analysis of Iron Steel, Iron Ores Sings, Limestones. Coals. Clays, Fire Sands &c. Agents for sampling ores in New York and Railtimore. Price lists on application. CHEMICALS AND APPARATUS FOR THE ANALYSIS OF ORES, IRON, STEEL, FUEL, FLUXES, FURNACE GASES, éc.,| fei a Our Specialty. Being direct Importers and Manufacturers we can offer superior inducements. EIMER & AMEND, Nos. 205 to 211 Third Avenue. NEW YORK. Eighteenth Street Statiow Blevated R. R. bb Catalegwe Mailed ou Application, THE LRON AGE. JUSTICE COX, Jr. JUSTICE COX, JR. 7 C0, aouwrs ror CHICKIES, ST. CHARLES, MONTGOMERY WARWICK, CONEWAGO AND KEYSTONE Foundry & Forge Pig Iron. SHAWNEE ROLLING MILL CO., Limited, Best Quality Muck Bar. CATASAUQUA MFG, COs Bar, Angle, Skelp and Sheet Iron. Railroad Car Axles. New and Old Rails. No. | 224 So. Fourth St. + © __ Philadelphia. Edward J. Etting, IRON BROKER anv COMMISSION MERCHANT, 22% S. Third St., Philadelphia, Pa. Pig, Bar and Railroad Iron. OLD BAILS, —? ae. Agent for th MOUNT SAVAGE FIRE BRICK, The Allentown Iron Co, and the Greenwood Rolling Mill. STORAGE WHARF AND YARD DELAWARE AVENUE ABOVE CALLOWHILL STRERT, connected by track with rail railroad. Cash advances made on Iron. Established 1837. A. PURVES & SON, Dealers in Scrap Iron, Metals and Machinery, Cor. South and Penn Sts., Philadelphia, Offer for sale, in oe to suit, Red or Yellow Heavy evan Erase t Brass, best qualities, Ingots Gun Metal made strictly from 014 Cannon; 8 eam Pumps, cane Pulleys,&c. Machinery and Tools vari: us descriptions. Cash .paid for Scrap Iron and sedinccnecsall D. W.R. READ & CO., Importers and dealers in PETER WRIGHT & SONS, 807 Walnut Street, Philadelphia, &5 Broadway, New York, 44 Second Street, Baltimore, mporters of German and English SPIEGELEISEN, Pig, Scrap, FOREICN & NATIVE BESSEMER ORES.|NEW Gat oa RAILS, PIC IRON ENCLISH FIRE BRICK. re 205% Walnut St., PHILADELPHIA, JEROME KEELEY & & CO. 142 Pearl St. 57 Gracechurch St., 67 S. Gay St., 206 Walnut Place, Philadelphia. _NEW YORK, LONDON, ~=—s— BALTIMORE, SELLING AGENTS FOR CHARCOAL and ANTHRACITE BLOOMS, PIG IRON, SITES & GILL, BAK IRON, SHEET IRON, STEEL and IRON RAILS. IRON CLAD STEEL RAILS and BARS, MAGNETI 222 and 224 8. Third St., Phila, Pa. | and HEMATITE IRON ORES FIRE BRICK, NETIC and -OKE. MUCK BARS. H fle Old St DEALERS IN SCOTCH AND AMERICAN Rall, rap don. $f. Handle Old troe and Sigel Ir I of Iron and Coal propert rtien. Old Ralls, Scrap and Railroad Supplies. SCRAP IRON A Specialty. Isaac V. Lioyp. Jas. G. ~ Linpsay. LLOYD & LINDSAY, No. 328 Walnut St., PHILADELPHIA, Brokers and General Dealers in Iron and Steel, Railway Equipments and Supplies, Bar, Plate and Sheet Iren, Fig Iron, Rails and Fastenings, Mack Bars, Bleome, Boller Tubes, Wrought Iron Pipe, &c. Old Rails and Scrap Iron. E. H. Wilson. A. Kaiser. J. B. M. Hirons E. H. WILSON & CO., 230 South Third Street, Philadelphia. BROKERS AND DEALERS IN IRON AND STEEL. Correspondence solicited. BLAKEY & WALBAUM, Florida Yellow Pine, cargo lots. 206 S. Fourth St., PHILADELPHIA. GENERAL MERCHANDISE BROKERS. J. 0. RICHARDSON, © ae No. 232 Dock St., Philadelphia, NEW AND OLD RAILS, BLOOMS, BESSEMER PIG, DEALER IN i Pig iron, Merchant Bar tron Spiegeleisen Iron Ores and tron Ores. Railroad Supplies Generally. J. J. MOHR, Sole Agent for Sheridan, Leesport, Temple, Millcreek and Lynchburg, BESSEMER, FOUNDRY AND FORGE PIG IRON, CHARCOAL PIC IRON. 430 Walnut &t.,. PHILADELPHIA, PA, G. A. HEBERToN. 5S. Frayx SHARPLEsa. HEBERTON & CO., Selling Agents and Commission Merchants For the sale of Bloom, Plate, Bar, Se leantecd wm Blech, Shoot, Pipa and Wottroad _ IRON. | LOCOMOTIVE AND CAR WHEEL TIRES, | No. 220 So. 34 St., Phila. Manufactured from the celebrated OTIS STEEL. _ Charcoal Bloom and Pig a specialty." _| BRAND JOSEPH P. REED « 00, STANDARD. & Iron Brokers and Commission Merchants, | | Quality and efficiency fully guaranteed. Prices as ow as = of the same quality. We manufacture 261 8. Fourth St., Philadelphia | Hav Light For — Driving and Car Axles, Sole Agents for } Piston COOPER IRON MINING CO., Chester, N. J. | Office, 220 8. 4th St., Philadelphia, Pa. Works at Lewistown, Pa. ~ ETHELBERT WATTS, J. D. BOYLE’S CONNELLSVILLE COKE. IRON BROKER AND COMMIS- HARBISON & WALKER’S FIRE BRICKS. MAGNETIC and HEMATITE TRON ORES a Speciaity. SION MERCHANT, No. 326 Walnut St., Philadelphia, ~ ANDOVER PIG LRON, Pig, Muck and Bar Iron, Scrap, Etc, FOR BEST MILL PRODUCTS. Andover Chill Iron for Carwheels, &c. | | | Also, COKE, TRON ORES, BIT, COAL. Rodman Wister, _J. N M. Shimer. Eath pig marked exact chill depth (4% inch to % Late Shimer & Co, inch), A. Whitney & Son's standard test. F. A. Comiy, Treas. J. WESLEY PULLMAN, Agent. - &R. WISTER & CO., { R ON BROKERS. 407 Walnut St.. PHILADELPHIA. Scrap [ron a Specialty. J. W. HOFFMAN & CO.,— Agents for the Olearfleld Fire Brick Co.’s Iron Merchants & Railway Equipments. | o 208 South Fourth St., Philadelphia. | Sole agents Glasgow Iron Co. and Pine Iron Works | Tire Bricks. No. 230 South 4th &t., Phtladelphia. STANDARD STEEL Langhorne Wister. manufacturers of Muck Bar and all grades of Plate | — Celebrated “‘Giasgow” and * Pine’? | peente 6 for fire wenes “Ss us Gensing. Pig and Bar Rails an shapes in Iron. uotati given on Bridge and Building Specifications NOVELTY IRON FOUNDRY. | HAICHT & CLARK, [6 & (8 De Witt St., Albany, WN. Y. Manufacturers of FINE GRAY IRON CASTINGS OF EVERY DESCRIPTION, Rosettes and Pickets for Wire Workers, Castings for Furniture and Piano Manufacturers, Iron and Metal Patterns of all kinds a Specialty. Correspe ndence solicited for JAPANNINC. COPPERINC, BRONZINC. J. TATNALL LEA & CO.,, Successors to CABEEN & CU., IRON COMMISSION MERCHANTS, No. 400 Chestnut Street, Philadelphia. BESSEMER, MILL AND FOUNDRY PIG IRON, SKELP IRON, MUCK AND SCRAP BARS NATIVE AND FOREIGN ORES, A. A. HUTCHINSON & BRO.'S CONNELLSVILLE COKE JT. F. BAILEY «cco, 216 South 4th Street, - - PHILADELPHIA, SELLING AGENTS, Pottsville Iron & Steel Co.’s Beams, Angles, Channels, Rails and Bars, Car Axles, Pilates, Channels, Tees, Angies and Bar Iron. Universal and Sheared Plates for Bridge and Other Work. ___ Special attenti: »n given to all kinds of Structura! Lrons. BRADLEE & CO., EMPIRE CHAIN WORKS, 816 Richmond St., Philadelphia. pecial attention given to the Manufacture of Chains for Gi crates ; Mitiug aud Dredyiug Cliains ; "DB, B. @.' Spevial | ee in K. BARNS, ! Vibrations in Bridges. Prof. S. W. Robinson, in a report, included in the forthcoming report of the Ohio Rail- road Commissioners, submits the following very interesting remarks on cumulative vi- bration in bridges : It is a well-known physical fact that rhythmical impulses, though very slight in- dividually, will result in an astonishing cu- mulative action when applied for a time to « body so circumstanced as to vibrate in equal rhythm. Soldiers in marching must break step in passing over foot bridges, else, if the bridge should have a time of vibration equal the time of step, the structure would vibrate seriously. The trot of a dog has been ob- served to cause a street bridge to vibrate with decided intensity, the vibration being observed to keep time with the dog. Horses in vehicles ‘‘ must not move over the bridge faster than a walk,” for fear the trot and vibration periods shall agree. The child in a swing is able to rise from a low to a higk attitude without help, simply by a tilting mo- tion of the body, so directed that each adds a slight impulse to the oscillatory movement } Similarly in railroad bridges a slight want of perfect balance of the locomotive driving- wheels may cause unexpected vibrations and unanticipated strains when the times of half revolution of drivers harmonize with the bridge vibration time. The lkelihood of such synchronism may be rendered more apparent by means of calculated results. For example, a train moving at the rate of 30 miles per hour has a velocity of 44 feet per second. Locomotive drivers of 5% feet diameter make one revolution in about 0.4 second, or a half revolution in 0.2 second Now, an iron bridge of 150 feet span will weigh about 1400 pounds per foot. In vi- brating vertically, as by placing a heavy load upon it suddenly, the ends at abutment do not participate, while the middle is most active. To get an approximation, without going into refinements as to distributed masses, suppose half the bridge length to vibrate equally while the quarters near the abutments do not vibrate, then half