The Iron Age 1909-07-29: Vol 84 Iss 5

ta are ane ne ar —mrrerae—receg = eas semneiaeiitimmmnimas a SAT enn 2 THE IRON AGE New York, Thursday, July 29, 1909. THE LODGE & SHIPLEY MARVEL LATHE. Many machine tool builders took the opportunity during the recent depression to develop deferred projects and improvements of existing types; among them the Lodge & Shipley Machine Tool Company, Cincinnati, Ohio. The Marvel lathe is this company’s latest and most pretentious product and is designed primarily for ability did the work of two standard turret lathes and two low swing types. General views of two sizes of the lathe are given in Figs. 1 and 2. The Headstock. The headstock, Fig. 3, is the same as the company’s standard patent head design, with double back gears and Fig. 2.—The Lodge & Shipley 4 x 48 In. Marvel Lathe. the rapid production of duplicate parts made from bar stock. In accomplishments it approaches the turret lathe and for certain work it is better and faster and it has simpler attachments. For nearly a year the first models have been under test in the builder’s shop. The first outside installation was in a large electric manufactur- ing plant, where two of this type in a trial of speed and LT Ne ee hee single pulley drive. The pulley is carried in bearings in- dependent of the main spindle, thus relieving the spindle and its bearings of all belt pull. The main spindle is ex- ceptionally large and is bored out to réceive a hollow tube, called the draw tube, the bore of which determines the diameter of bar stock the lathe will admit. ‘This draw tube is threaded on an adjustable collet at the oa eh lia iia MN yo BES REPS IS oo | | Hi | | i | : ; 320 THE IRON AGE front end of the spindle; the thread furnishes a means for adjusting the collet to any diameter of bar that any one set of jaws will take in. The rear end of the spindle projects beyond the rear bearing and carries a stepped ~collar, which slides on the spindle. Between the stepped collar and the rear main spindle bearing is another collar backed by a nut threaded on the spindle. In this collar are pivoted two steel levers, in the outer ends of which are two hardened steel rolls, which operate on inclined faces of the stepped collar. The inner ends of the steel levers engage a collar fast on the rear end of the draw tube through two slots in the spindle. On the extreme rear end of the spindle is threaded a collar forming a: limiting stop for the sliding ‘stepped collar on the spindle and also an abutment for a compression spring acting against the rear end of the draw tube. Directly above the main spindle is a guide shaft, on which slides a yoke engaging the stepped collar. To this yoke is attached a bar immediately over the guide shaft and extending to the front end of the headstock over the main spindle gears and pulley, on the front end of which, and on the under side, a rack is cut. This engages with a pinion fast on the shaft at right angles July 29, 1909 ing the stepped collar from between the lever arms and allowing the spring acting against the rear end of the draw tube to force it and the collet body forward, the springs in the radial jaws forcing them out against the coniea] ring in the hood, thus relieving the grip. A coarse pitch screw passes through the center of the draw tube supported on the front end by a collar, which is a sliding fit in the bore of the draw tube, and on the rear end by a nut secured to the extreme rear end of the main spindle. Mounted on the screw immediately behind the nut are two hand wheels, the inner one being splined on the screw, while the outer one is threaded and operates as a lock nut. When the inner hand wheel is revolved the screw revolves with it and is caused to travel through the nut secured to the main spindle, thus giving end adjustment, and is locked in any required position by the outer hand wheel. The front end of the screw is arranged to receive either a small center or straight bar, the functions of which are described later in connection with the operation of the machine. Carriage and Tool Blocks, These parts, as shown in Fig. 4, are of especially massive and rigid construction. The arms of the car- Fig. 3.—Headstock of the 4 x 48 In. Marvel Lathe with Gear Covers Removed aa to the main spindle and projecting at the front of the machine. On the extreme outer end of this shaft a clutch is.secured, the teeth of which engage another clutch that is loose on the shaft and so formed as to receive a hand lever. The loose clutch is kept engaged with the one fast on the shaft by a spring, which is capable of being easily compressed by hand to throw the clutches out of mesh. The chuck is an improved design of the Cleveland Adjustable Collet Company, which consists of a hood threaded on the nose of the spindle, in which is secured a hardened conical steel ring. The collet body is carried in a taper bushing in the end of the spindle, the inner end being threaded to receive the draw tube, as before mentioned. Radial tee slots in the collet body receive hardened and ground steel jaws, which bear against the conical steel ring in the hood. Springs are inserted in each jaw to keep them in contact with the conical ring. When operating the clutch the hand lever, which stands above the center, is pulled forward, which, by the mechanism described, draws the stepped collar forward, forcing the lever arms outward, the inner ends of which, bearing against the collar on the rear end of the draw tube, force the draw. tube backward together with the collet body, causing the radial jaws to slide on the coni- cal ring in the hood, thus gripping the stock. When relieving the grip the hand lever is reversed, withdraw- riage bear on the two outer vées of the bed. The bridge also has a bearing on the top and inside ‘of the flat track on the front shear. The bridge of the carriage is ex- ceptionally wide and is extended beyond the back line of the carriage. ‘Two independent transverse dovetails are planed on the bridge, the one on the right side being raised considerably above the other and extended the entire length of the bridge and its rear extension. The other dovetail extends from the rear of the bridge ex- tension to a little past the lathe center. In the right hand dovetail a slide is fitted with taper gib, which carries a front and back tool block. The front tool block is in the form of a slide fitted in a dove- tail with taper gib parallel with the main. spindle, for the purpose of giving the front tool a longitudinal screw adjustment; when adjusted, it is locked in position by a clamp screw. A large longitudinal tee slot at the top receives the usual form of tool post and step washer. The back tool block has transverse hand adjustment and is clamped by two tee head bolts in a tee slot planed in the main slide. This block also has a large trans- verse tee slot for receiving the usual form of tool post or European tool block. ; The tools in these tool blocks can be set in any re- quired relation to each other and rapidly and accurately adjusted. In the left hand dovetail of the carriage a slide with ee a a PO July 29, 1909 taper gib is fitted which carries a rotating tool holder. In the face of this tool holder, which faces the head- stock, are reamed holes to fit the tool shanks. These holes are so placed that when tho tool holder slide is locked to the carriage by a spring plunger provided for the purpose, each one of the tools in the face of the re- volving tool holder can be brought with its center coinci- dent with the main spindle center. The revolving tool holder is locked to its slide in each position by a spring plunger. Various tools can be inserted in the holes in the re- volving tool holder, such as centering tools, rounding tools, die holders, &c. Necking, cutting-off and turning tools may be carried in holders bolted to the face and projected beyond the edge of the reyolving tool holder slide for turning operations. An adjustable stop is provided in the carriage for use in connection with these turning and necking tools, as shown in Fig. 5, by means of which they may be repeat- edly brought into exactly the same position relative to the main spindle center, thus duplicating any required THE IRON AGE. 321 keyed on the reduced end of the slotter bar and kept in engagement with the stationary clutch by a spring. On the periphery of this clutch spiral grooves are cut, also corresponding in number with the slots in the slotted bar. On the edge of the tool block slide, next the tailstock and at each end, are two hubs, the front one being cast solid with the slide, while the rear one is adjustable longitudinally by means of a tee slot and tee-head bolts. In each of these hubs two shafts are journaled parallel with the slotted bar, to the inner ends of which are se- cured steel fingers. In the ends of these fingers and also parallel with the slotted bar two screws are threaded with means for locking them in position when adjusted. These fingers each have two positions, the one for engag- ing the stops on the slotted bar and the other for allow- ing the fingers to pass over the stops, both of which are maintained by means of a spring latch. The slotted bar has two sets of stops; one set to engage the screw in the - steel finger on the front end of the slide for use fn con- nection with the front tool; the other to engage with the Fig. 4.—-The Carriage and Tool Holders of the 4 x 48 In. Mafvel Lathe, Looking Toward Tailstock. diameter. A single lever operates this stop and also the spring plunger which locks the revolving tool holder to its slide. Both the right hand slide, carrying the front and back turning tools, and the slide carrying the revolving tool holder are traversed back and forth by the same hand wheel on the front of the carriage, but the move- ments of each are entirely independent. A friction, or slip member, is inserted in this hand wheel, the function of which will be shown later. The most important and noteworthy feature in the carriage is the automatic stop arrangement for use in connection with the front and back tools carried on the right hand slide, by which a number of different diam- eters can be rapidly and accurately duplicated. Along the side of the bridge of the carriage next the tailstock and journaled in two hubs cast on the front and rear arms of the carriage is a heavy bar with tee slots milled lengthwise through that part of the bar between the arms of the carriage. The bar is reduced at one end for a certain distance to a diameter just clearing the bottom of the teel slots, so that the tee head blots which slide in the slots may be inserted. These bolts secure small steel stops in any desired position on the slotted bar. On the front end of the bar means are provided for taking up end wear so that a snug running fit may be main- tained. On the outside of the rear bearing is secured a steel clutch, the teeth of which correspond to the tee slots in the bar. Bngaging with this is another clutch screw in the steel finger carried by the adustable hub on the rear end of the slide, which is used in connection with the rear tool. In the rear hub just mentioned there is also a spring pin, the end of which engages with the spiral grooves cut on the periphery of the clutch keyed on the end of the slotted bar. These grooves are so formed that the for- ward movement of the slide will cause the end of the spring pin engaging the spiral groove to compress the spring which keeps the clutches engaged. This will con- tinue until the clutch teeth are disengaged, at which time the slotted bar will revolve by the continued move- ment of the slide, the end of the spring pin traveling in one of the spiral grooves. These spiral grooves are of such length that when the slotted bar has revolved sufficiently to bring the next stop into position, the end of the spring pin traveling in the groove will pass out of the opposite end; at the same time the cluteh teeth come into position to engage,.and are engaged by the spring previously compressed ; the movement of the slide may then be continued as desired. On the return move- ment of the slide the end of the spring pin will again enter the same groove; but instead of any movement being imparted to the clutch, the groove is so formed that the spring pin will ride over the top of the spiral and drop into position for the next groove in the clutch. Movement of the slide may also now be continued as required. r From the foregoing it can be seen that a number of ~ 322 various diameters, not exceeding the number of stops on the slotted stop bar, can be rapidly duplicated. Along the front of the bed just below the apron is a rectangular bar which slides in brackets bolted to the bottom of the bed. The top of the bar is planed in the form of a dovetail, to which telescoping stops are secured by clamp bolts and whicn are adjustable the entire length capacity of the machine. The head end bracket carries a spring and solid abutment, which limits the sliding movement of the stop bar. The lead screw does not run through the sliding feed gear at the head end of the lathe as is usual, but is divided just in front of the head end box, thus making: two separate parts. On the right end of the short piece in the box is a sliding clutch, which engages with the contiguous end of the lead screw. This clutch is con- nected to the stop bar along the front of the bed, by a lever pivoted on a stud, the bar having just sufficient movement to disengage the clutch. On the bottom of the apron a bracket is bolted car- rying a pivoted arm to engage the stops on the sliding bar. When engagement takes place the bar slides with the carriage until the clutch on the lead screw is drawn THE IRON AGE July 29, 1909 a centering tool is then brought into position and the piece is centered. Returning the revolving tool holder to its rear position, the tail center is inserted into the center just made in the work and clamped. The first cut is started with the tool in the front tool block, and the first stop on the diameter stop bar clamped . in position to give the diameter required. The cut is taken the required distance and the shoulder stop set in. position. The tool is then withdrawn and the back tool squares the shoulder. The forward movement of the slide for the next cut revolves the diameter stop bar and brings the second stop into position. The second diameter and shoulder are then made as in the previous manner. When all the diameters and shoulders on this piece are completed, it is removed from the chuck. If the piece requires an operation on the end gripped by the chuck, it fs again inserted, with the remaining rough end _ project- ing sufficiently to complete all the required work to be done. A full set of jaws is furnished with each machine, so that any diameter within the capacity of the machine may be gripped. The piece being gripped in the chuck Fig. 5.—The Carriage, Chuck and Automatically Revolving Cross Stops of the 4.x 48 In. Marvel Lathe, Looking Toward Headstock, out of mesh, which stops the feed; at the same time the bar comes against its solid abutment on the head end bracket.. The pivoted arm may now be raised out of engagement with the stop, at which time the spring, previously compressed by the movement of the bar, will force the bar back to its former position and re-engage the clutch again starting the feed. Having described the general design of this machine, a description of its various operations on various ma- chined parts will be easily understood, and the function and value of certain parts will at the same time be emphasized. . Method of Operation, The stock is delivered to the machine in pieces cut to the required length. This has many advantages over delivering stock in the bar. Much less floor space is re- quired, as nothing projects beyond the back end of the machine. The stock is also more easily handled. When the machine is in operation there is no vibration and noise from a long bar not.quite straight, revolving in loose supports, which not only greatly impairs the accu- racy of the work but also its smoothness of finish. A piece is inserted from the front of the chuck and gripped with sufficient projecting for the operation. The gauge screw inside the draw tube is brought against the stock and locked. The revolving tool holder carrying is centered in the same manner as before, the tailstock center being inserted. The operation of the cuts and ad- justments of the stops is the same as before described. This machine being equipped with cross and longi- tudinal stops, any number of pieces may be rapidly and accurately duplicated. In the Lodge & Shipley shops it has been found that in any 25 pieces taken from a lot turned on one of ‘these machines the variation both in diameter and shoulder length does not exceed 0.002 in. Among the advantages of this machine is that one tool in conjunction with the automatic stops will turn any number of diameters of any shoulder length within - the capacity of the machine not exceeding the number of stops furnished. The shoulder stops are so arranged that shoulders of any length from zero to the capacity of the machine can be easily turned. The method of holding the work insures the greatest possible accuracy, in addition to which operations impossible on such ma- chines as the turret lathe and screw machines are easily performed. Applications for patents have been made on all the new features. e or The Oil Well Supply Company’s New York offices have been removed to suite 1710-1711 West Street Build- © ing, 90 West street. July 29, 1909 Two New Peck Poppet Drop Hammers. The poppet drop hammers illustrated have been brought out by the Miner & Peck Mfg. Company, New Haven, Conn., particularly for silverware and jewelry manufacturers, and for other similar light stamping work, They are used as plain drops, controlled by foot or hand, and operated by the company’s lifting pulley or automatic lifter. The anvils-are heavy (in the four poppet type 12 times the weight of the hammer), and the metal is placed to make the blow most effective. The guide rods have wide bases, insuring their rigid standing, and are fastened to the anvil with large bolts which have extra thick case hardened finished nuts. The heads of the bolts are held by steel plates each having a piece of sheet rubber between it and the anvil, 4 device which prevents the nuts jarring loose. It will ER The New Six and Four Poppet Drop Hammers Built by the Miner & Peck Mfg. Company, New Haven, Conn. he noticed that the bracing is on the outside, instead of in the center of the guide rod, which is believed to make it stiffer and stronger. The adjustment for wear of the hammer is simple. ‘The adjusting screws shown on each side of the “anvil rest against projecting lugs on the guide rods, which enter pockets in the anvil. The lugs are held securely against the screws and the bolts pass through the guide rods and anvil at an angle. This arrange- ment prevents the guide rods from working inward. After the first setting all the adjustment is inward to take up wear of the hammer. The hammer handles are cast as an integral part of the hammer, the use of the wrought iron handle having been abandoned be- cause the company had found that it has a tendency to work loose or break. The hammers are designed to hold dies either with taper hole and set screw or with dove-tailed slot. The poppets are finished, and are fitted to template, making them as accurate as lathe chuck jaws. The i. THE IRON AGE 323 poppet screws have fine special threads and the heads are of the same size as the nuts on the guide rod. In the six-poppet machines the screws are long enough to pass back of the guide rod, which permits bringing the poppets close together without the wrench interfer- ing with the guide rod. The four-poppet drop is made in five sizes, 50, 100, 150, 200 and 300 1b., and the six-poppet in five sizes, 300, 350, 500, 600 and 800 Ib. In the four-poppet group the die spaces are respectively 6, 7, 9, 12 and 12 in. sq., and in the heavier group 12 x 14 in., 14 x 1€ in., 16 x 18 in, 18 x 20 in., and 23 x 26 in. Sin The Production of Chromic Iron Ore in 1908. The total production of chromic iron ore in the United States in 1908 was 359 gross tons, valued at $7230, ac- cording to the annual report of the United States Geological Survey, which has just been completed by E. C. Harder. Most of the ore was produced in Shasta County, California, and a small quantity came from Converse County, Wyoming. It was used for linings in furnaces. No domestic ore was used in the manufac- ture of chrome alloys, but the imports of foreign ore amounted to 27,876 tons, val- ued at $345,960. The current domestic production is less than ‘one-tenth of the output of 1894, which was 3680 tons, val- ued at $53,231. The mining of chromite or chromic iron ore in the United States is limited by the extent of the deposits. The association of chromite with basic igneous rocks is widespread, but deposits of workable size are rare. Commercially important deposits have been found only in Pennsylvania, Maryland, North Caro- lina, Wyoming and California, and the last named State is the only one which has for many years been a commercial producer. The price of chrome ore varies from $10 to $20 per gross ton, according to the grade of the ore. Imported ore from New Caledonia carrying 50 per cent. chromic oxide is quoted in New York at $17.50 to $20 per gross ton, excluding cost of trans- portation. When the chromic oxide ex- ceeds 50 per cent. the value of the ore rises in proportion; when the chromic oxide is less than 50 per cent. the value of the ore decreases at a more rapid rate. The California ore is valued at $20 per net ton at the mines. ——_»--e———_——- Louis Follet, secretary and commer- cial manager of the Standard Tin Plate Company, Canonsburg, Pa., has issued the following statement for the purpose of cor- recting reports in. circulation: “We are not involved in the controversy existing between the Amalgamated As- sociation and some of the mills of our competitors. We are operating our 10-mill plant to its fullest capacity, and beyond the loss of a few men here and there, which we are able to promptly replace, we are at the present time not involved in any of the matters of dispute re- ferred to, our plant harmoniously operating and our men absolutely satisfied, as far as we know, with our con- ditions.” The Alliance Machine Company, Alliance, Ohio, has in the last six weeks closed some large contracts for electric cranes with several of the leading steel works and other manufacturers. The various contracts call for 59 cranes, mostly for special service, and large capacity, and include three 15-ton cranes, three 200-ton strippers, 6 soaking pit cranes, 2 slab charging machines, magnet cranes, gantry cranes, bucket handling cranes and stand- ard three or four. motor cranes. RS Se ee eee 324 The Bliss Steam Turbine. The steam turbine on which the HE. W. Bliss Company, Brooklyn, N. Y., has been experimenting for several years is now being placed on the market. It is one in which as far as possible the weaknesses of other turbines have been avoided and the strong features retained. Structural strength has been particularly sought, and Fig. 1—The New Turbine Built by the BE. W. Bliss Company, Brooklyn, N, Y., as Applied in an Blectric Generator Set. THE IRON AGE July 29, 1909 The exhaust: steam turbine is especially adapted to manufacturing plants running at present with direct drive from a steam engine and contemplating extensions to their plant. By installing a turbine directly connected to a generator and operating on the exhaust steam which passes through the engine, the addition which is usually at some distance from the ‘main plant, can be driven much more economically by electricity than by direct drive. This method. also makes the additional invest- ment considerably less than by extending the direct drive, since no new boilers are required, and the operating economy will be very much less than by a direct drive. Many industrial plants when considering the question of changing over from direct to electrical drive are deterred from doing so on account of the expense involved, and also by the fact that they are not quite sure whether this saving will be sufficient to pay for the additional fixed charges of such improvements. The exhaust turbine of- fers a solution of this problem inasmuch as the part of the factory furthest from the power house, which is of course the portion which will derive the greatest benefit from the electrical drive, can be driven electrically by means of an exhaust turbine, while the larger part of the factory, which is in closer proximity to the power plant, can be operated by direct drive. which, where the distances are short and countershafts few, is fully as economical as the electric drive. The exhaust steam machines are built in sizes from 75 up to 1000 kw. capac- ity, and the straight high pressure turbines from 10 kw. capacity up, both condensing and noncondensing. The general construction of the Bliss turbine is shown in the illustrations. Fig. 1 shows a turbine directly con- nected to a dynamo, Fig. 2 the parts of a turbine un- assembled and the remainder of the illustrations details of parts. The casing is of cast iron, having the steam chest carried concentrically around its outside and delivering «Fig. 2.—The Unassembled Parts of a Bliss Turbine. more especially in the vanes or guide blades, which in these machines are practically beyond danger of destruc- tion. The turbine is now being built in all sizes up to 1000-kw. capacity, and it is being designed with a view of being applicable to ‘industrial and other isolated plants as well as central stations. The designs include ma- -Chines for operating both condensing and noncondensing and also for turbines to run on the exhaust steam from reciprocating engines. the steam radially inward to each of the nozzles. The construction maintains an even temperature all around the circumference and also does away with the necessity of having to bring any of the steam outside of the casing and then back into it again, as is neces- sary in some types of turbines. This is a very im- portant point in the successful operation of the machine, as it is sometimes desired to look inside of the machine for inspection, and it is troublesome and July 29, 1909 annoying to have to break several steam joints to do so. The rotor or turbine wheel is one solid piece of open hearth steel, with the bucket seats milled in its periphery, making a very substantial construction. The buckets are separated from each other by sheets of a special anti-corrosive metal, which are held in place as shown in Fig. 3 by three steel bands shrunk on over the periphery. There is thus a smooth exterior, with no pro- jecting parts, and while the wheel is as indestructible as it would be if no separating pieces were used, it has not the disadvantage of requiring entire renewal if a single Fig. 3.—The Rotor or Wheel Mounted on the Same Shaft with a Dynamo Armature. bucket becomes damaged in transportation or handling. The running clearance is 1-16 in., so that the machine cannot be considered delicate in this particular, and if by any chance the turbine wheel should touch the cast- ing, it would be no more serious than the rubbing of a brake shoe on a car wheel, and no injury would result. The steam is expanded completely in the nozzles, so that there is no difference in pressure between the buck- ets in the wheel and the reversing chamber, and conse- quently no loss from leakage. The reversing chamber is common for all reversals, as shown in Fig. 4, so that the steam runs on a film of steam, instead of on metal, which greatly reduces the frictional losses, as the rela- tive difference in velocity @f each layer of steam with respect to the next is very small, whereas with separate Fig. 4—A Nozzle and Revers- ing Chamber Piece. reversing chambers the steam velocity relative to the metal is exceedingly high and therefore causes large frictional losses, as the friction is very nearly propor- tional to the square of the relative. velocities. The num- ber of times which the steam is used on the wheel de- pends upon the steam pressure and the speed of the. buckets, and in this nozzle the steam continues to strike the wheel as long as there is any energy in it, and not a fixed number of times irrespective of steam pressure and speed, as in the common practice. In most designs the rotor is overhung, primarily to make a two-bearing unit for fan, pump and generating THE IRON Fig. 5.—Section of a Bearing Showing Channeled Oiling Ring. AGE 325 sets; but four bearing units are built when desired by the customer and on all large machines. The center of gravity of the rotor is inside of the edge of the bearing, which is of spherical type, and has large wearing surface. As the only parts of the turbine requiring lubrication are the shaft bearings, it is impossible for oil to become mixed with the exhaust steam. The method of oiling the bearings by a positive ring oiler is shown in Fig. 5 and gives a positive feed lubrication without the use of an external pump. The oil is held im the rapidly re- volving channel shaped ‘rings by centrifugal force and is positively diverted to the bottom of the bearing by a scoop, as shown. This produces a positive oil pressure in the bearing at all times, whereas with the ordinary ring oiler most of the oil flies off from the ring and very little is actually forced to the bottom of the bear- ings, where the greatest pressure and need of lubrication exists. Around the shaft is a steel labyrinth packing in which there is no contact between the stationary and rotating rings. (See Fig. 2.) The packing prevents frictional losses and does away with the trouble attend- ant with carbon packings or stuffing box packings around a high speed shaft. The governor, which may be seen in Figs, 2 and 3, is of centrifugal type and consists of two revolving weights supported upon hardened steel knife edges, and con- trolling a balanced governor valve through knife-edge connections. In addition to the main governor there is an emergency governor entirely independent and operat- ing a separate valve. This emergency governor is set at a predetermined speed above normal and operates a butterfly valve, shutting down the machine if such an excessive,speed is reached through failure of the main governor. Under the same conditions of steam pressure, back pressure and speed, the primary losses in efficiency in any turbine are caused by steam friction and leakage. In the Bliss turbine, as the steam is expanded down to the back pressure in the nozzle, there is no difference in pressure between any part of the wheel and the re- versing chambers, which makes it possible to run with a very large clearance and still have no loss. The B. F. Sturtevant Company’s Growth.—The B. F. Sturtevant Company, a Massachusetts corpora- tion with a capital of - $500,000, has been reorganized and recapitalized. The new corporation is organized under Massachusetts laws with $1,250,000 6 per cent. cumulative preferred stock and $1,250,000 of common stock, and the stock has all been taken by a few of the large owners. John Carr, ' chairman of the Board of Directors of the First National Bank, Boston, is pres- ident, Bugene N. Foss is treasurer, and BR. B. Freeman has been elected general manager. The company has been doing a business of about $3,000,000 a year, The increased capitalization represents capital expenditures during the past year, largely in the erection of a new plant in Hyde Park, Mass., which cost over $1,- 500,000. Its fan and blower business has so increased that it has been found nec- essary to make this expansion, while a further enlargement of productive capac- ity is contemplated, which will probably be undertaken next spring. a The Liberty Manufacturing Company, Pittsburgh, manufacturer of oil filters, tube cleaners, &c., has decided to erect an addition to its plant to take care of its in- creasing business. It has bought ground and plans have been made for a brick and steel frame structure, 100 x 105. ft., two stories high. The contract has not yet been let.. When completed, it will contain a machine shop and finishing department and will about double the capacity of the company. Some new machine tools will be re- quired for this addition. 326 The Foote Bros. Style D Speed Reducer. Among the spur gear speed reducers made by the Foote Bros. Gear & Machine Company, 44 North Car- penter street, Chicago, for driving relatively low speed machinery from high speed sources of power the one Fig. 1.—The Style D Spur Gear Speed Reducer Made by the Foote Bros. Gear & Machine Company, Chicago. generally recommended is known as the style D, because its dimensions can be kept standard and still allow any reasonable change of reduction in the compound idlers. This, reducer will give any reduction of speed from 25 to 1 to 60 to 1. The style B reducer made by the company is furnished for all reductions of 8 to 1 to 25 to 1. The Fig. 2.—The Foote Style D Reducer with End Pilates Removed, Exposing the Gears. THE IRON AGE July 29, 1909 style C has the same construction as the style B, and can be furnished for the higher reductions if so ordered. The illustrations show the style D speed reducer. , It is claimed to be free from the usual objections to a spur gear speed reducer in that it has a sufficient central sup- port of the shaft between the high and low speeds, and proper mechanical support of the idler studs, and it has no rotating parts in its interior which can get out of balance to cause vibration. All the pins or bearings for the idlers are rigidly fastened by ample supports to the frame or case, insuring that there will be no loosening of pins or springing of them to cause cramping and crossing ‘of teeth. To support the slow speed shaft in the center between the outer bearings there is a partition which is part of the case. The internal gears are the only ones that rotate in the oil and they carry the oil up and it runs down over the idlers insuring perfect lubrica- tion. They are arranged for a long bearing on the shaft which prevents their tipping sideways, throwing undue strain on the teeth of the idlers. It is to be noticed that the high speed shaft does not pass through the } Y, VY} Wi VILL 4 La Wig. 3.—Axial Quarter Section, Showing the Transmission. slow speed internal gear which would necessitate making this shaft of small diameter to reduce friction and make it weak. The high speed shaft stops after going through the outer bearing on the motor side, and the slow speed internal gear has an enlarge@ shaft which gives it ample strength and it runs at a very slow speed saving a con- siderable loss in frictiona] load. All of the bearings are bushed with phosphor bronze and are amply long enough for long life and hard duty. To allow for any error in the alignment of the motor shaft and reducer shaft a flexible coupling is arranged to be supplied with the housing. The housing is made to resemble a motor for appearance sake, and as far as possible the distance from the base to the center of the shaft is made about that of the motor to be used so as to avoid the use of strips or blocking to adjust the centers between the motor and the reducer. Fig. 1 shows a view of the exterior of the style D reducer, Fig. 2 a view of the reducer with the back and front cover plates removed, exposing the gears on the interior. A sectional view of the reducer is given in Fig. 8, from which the operation may be understood. Inte- gral with the shaft a is a pinion b which drives through a set of idlers c that are secured to the side of the case j. These rotate the internal gear d, to the hub of which is keyed a pinion e. The latter drives gear f, which is keyed to the pinion and shaft g, driving gear h. The internal gear h is keyed to the shaft i, on an extension of which is a flanged coupling for connecting to the machine to be driven. The shaft @ projects far enough to receive a flexible coupling between itself and the motor. Fig. 2 shows the three idler pinions which are fastened to the case j in Fig. 3 and pinion b, and also the three pinions corresponding to g in. Fig. 3 projecting through the case to engage the internal gear h. The Foote Bros. Gear & Machine Company makes speed reducers in seven sizes, and is prepared to furnish them with any reasonable ratio of reduction, and in capacities of from 1 to 50 hp. For ratios of less than 8 July 29, 1909 to 1 gear reducers are hardly necessary, and for any greater ratio of reduction than 60 to 1 the company rec- ommends its worm gear reducer. —_——__>o-o__ ——— The Wais Patent Universal Shear. The universal plate, bar and angle shears made for- merly by the C. C. Wais Machine Company, Cincinnati, Ohio, are now made under the patents of C. C. Wais by the Covington Machine Company, Covington, Va. The illustrations herewith show a plate and double angle shear of the latest type to which a number of improve- ments have been added since the description of a similar machine which appeared in The Iron Age, March 7, 1907. The machine shown is particularly intended for boiler makers, iron workers, structural iron workers, or any shop where there is occasion to cut plates, bars and angles of even and uneven legs, To cut angles or plates on .an ordinary punching and shearing machine requires con- THE IRON AGE 327 to clear long sheets when the latter are being cut in the plate shear, and if it is necessary to change stock angles to make others of equal or unequal legs by trimming off one of the legs longitudinally this work may be done by removing the table just mentioned, which simply requires the taking out of two bolts. It has always been a difficult matter to cut angles of uneven legs unless large special machines too expensive for ordinary shops were installed. This shear embodies all the best features of a double angle shear, it is claimed, and also the best features of a plate and bar shear. The bars may be cut by either the angle or plate shear. The machines are designed to occupy as little floor space as necessary, and are strongly geared and of generally mas- sive design. The gear covers, besides acting as safety guards, form the bearings for the gears, and the gears in turn form the bearings for the eccentric shafts, so that a maximum stiffness is secured and ample protection for the workman. ~ The shears are built in five sizes. The largest will Fig. 1. siderable changing, which consumes time. This machine is always ready for any of the kinds of work before mentioned, therefore effects a considerable saving in time. The plate shear is at the front of the machine, and the angle shears in the two square openings in the sides, as shown in Fig. 1. The angle shear will cut right and’ left angles of even or uneven legs and at any angle up to 45 deg. The shears are all driven from one pulley, or, as shown in the illustration, by a motor. The angle shears with their knives travel at an angle of 45 deg. from the horizontal, and can be operated singly or to- gether. A patent clutch mechanism ‘is arranged to posi- tively stop the slide at the highest point of its stroke. It contains no springs to keep up a continual knocking of the jaws. The clutch levers are universal and can be swung to any position to suit the operator. The machines are built with either single or double angle shears, and when desired on the larger machines turntables are furnished. Each double angle shear is provided with.a table, as shown in Fig. 2, and gauges for cutting at different angles. The table is sufficiently high Fig. 2) --~ Two Views of the Wais Universal Plate, Bar and Angle Shears Built by the Covington Machine Company, Covington, Va. take angles of 6 x 6 x 1 in. and 7 x 7 x % in., cut plates %-in. thick and trim plates 1-in. thick. The smallest of tthe five sizes will take angles of 8 x 3 x % in., and 4x4x % in, will cut 4-in. plates and trim %-in. plates. a The Largest Chilled Roll in the World.—A letter under date of July 18 from Fried. Krupp, Aktienge- selischaft Grusonwerk, Magdeburg-Buckau, Germany, takes exception to the claim made by the A. Garrison Foundry Company, in The Iron Age of March 11, that a roll 42 x 152 in., cast by that company for the Otis Steel Company, Ltd:; was the heaviest or largest chilled roll ever cast in the world. Its weight was 71,000 lb. The manufacture of chilled rolls is an old specialty of the Krupp. plant, which is turning out fully as large, and even larger, rolls than the set above described. It has re- cently supplied a large brass and copper rolling mill with chilled rolls 44 in. in diameter, having a working surface of 165 in. in length of barrel and weighing 72,500 lb. each. Seas eae eS te a i aT peeereree 328 THE IRON A Brown & Sharpe Hob Grinding Attachment. The hob grinding attachment shown in the illustra- tion is for use with the No. 13 universal and tool grind- ing machine of the Brown & Sharpe Mfg. Company, Providence, R. I. It is designed to sharpen accurately spirally cut hobs, either right or left hand, by grinding the faces of the teeth. The attachment closely follows the design of the spiral head employed on the Brown & Sharpe universal milling machines; the gearing is of the same general order and gears having the same numbers of teeth are employed. Consequently a hob grooved on one of the company’s milling machine can be ground accurate- ly with the attachment. The device is driven from a stationary rack, A, fast- ened to the front of the machine, upon which a pinion, AGE July 29, 1909 of the table by the single lever G, while the driving mechanism or rack is fastened to the frame of the machine by two bolts. The regular footstock is used with the attachment. It will be seen that the device is rigid, compact and simple. A saucer shaped grinding wheel is used, all grinding being done on the convex side of the wheel. A table of gears and spirals accompanies the attachment. ————— +e —_—_—__——_ The Nutting Buffing and Polishing Lathe. A duplex, independent end, buffing lathe is an exclusive product of A. B. Nutting & Co., Amesbury, Mass., and be- ing thus developed as the sole specialty naturally has some unique features in a machine of its character. Its principal difference from the usual type of double-end The Hob Grinding Attachment Applied to the No. 13 Universal and Tool Grinding Machine Built by the Brown & Sharpe Mfg. Company, Providence, R. I. B, revolves as the table is moved longitudinally. The pinion drives gearing arranged to revolve the arbor sup- porting the hob as the table advances. Thus the correct lead of the grooves is maintained and the face of each tooth ground an equal amount. With hobs having very short or very long leads the gearing can be compounded so that the correct rotation of the hob is assured. A fine adjusting screw, C, provides for adjusting the face of the teeth to the wheel and regulates the depth of cut. After being set to grind the face of the teeth radially the posi- tion of the wheel remains unchanged. In order that hobs of either right or left hand spiral may be ground means are provided for reversing the direction of rotation of the spindle. The reversing lever D operates a mechanism consisting of a pair of bevel gears situated on the driving pinion shaft and revolving with it. The lever slides these gears on their shaft, so that either may be made to mesh with a third bevel gear located between them, its function being to transmit motion to the change gears and spindle. Thus by shift- the lever the reverse direction of rotation of the spindle is obtained. The index plate E is free to revolve upon the spindle and is driven by a small steel pin, F, which drops auto- matically into the holes of the plate when brought into correct position. A pin, H, carrying an adjustable yoke, is provided on the front of the plate for fastening the dog which drives the arbor. Two index plates are furnished with the attachment, providing means of grinding hobs ranging from 2 to 20 grooves. The attachment is quickly placed in position or re- moved from the machine. It is clamped to the face machines is that both ends are independent; that is, the two polishing wheels are not fast on the main shaft, and it is not necessary to stop work at both wheels while one is being changed. As the wheels have to be changed quite frequently, sometimes every few minutes, since the The Duplex, Independent End, Buffing Lathe Made by A. B.. Nutting & Co., Amesbury, Mass. wheels have to conform to the shape of the work being dene, the ability to stop one at a time effects a consider- able saving in time and also abolishes the annoyance of compelling the work to be stopped at the other end. Therefore, it contains the advantages of a single end lathe without the latter’s disadvantage that it does not- July 29, 1909 run quite so smoothly as a double-end machine, in conse- quence of which much better work can be obtained on the double-end type. The double-end machine also saves in space required, which, where a large number of ma- chines is installed, may amount to considerable. There is also a saving in the amount of belting needed and the power consumed for the same number of operators. In the Nutting lathe, while it occupies no more space than the usual double-end type, the polishing wheels are adapted to be independently thrown in or out of engage- ment by simple friction clutches, which are operated by convenient hand levers, as shown in the illustration. A slight movement of the operator’s hand instantly engages or disengages the spindles without stopping the belt. The base of the machine occupies a bench space of 12 in. long by 17 in. wide, and the overall length of the frame, exclusive of the spindle ends, is 19% in. It weighs.about 90 Ibs. ‘The frame is made in box form and is provided with dustproof casings, completely covering the bearings and all working parts. The bearings are cast in the frame, connecting them rigidly together and rendering it impossible for them to get out of line. An especially deep lining of hard metal is provided in the bearings, and self- oiling arrangements by which the journals are continu- ously lubricated. The spindle and main shaft are of steel and have long bearings and a special adjustment to com- pensate for end thrust wear. The ends of the spindle are detachable and can be furnished in any length or form, making it possible to use the same machine for all classes of work. The driving pulley is 3-in. diameter by 3-in. face, and runs between the bearings, where it may be belted either from above or below. All the running parts are carefully balanced and can be run at as high a Speed as $500 rev. per min., or even more, without trouble. —_——_.9+-e———— Olsen Motor-Driven Wire-Testing Apparatus. The latest wire tensile-testing machine developed by Tinius Olsen & Co., Philadelphia, Pa., is shown in Fig. 1. It consists virtually of two separate mechanisms, per- Fig. 1.—The Latest Machine for Tensile Tests of Wire, Built by Tinius Olsen & Co., Philadelphia, Pa. forming the straining and the weighing functions, re- spectively. The straining mechanism consists of a cross-head drawn by four screws, providing a steady, THE IRON AGE 329 straight motion. As the screws do not rotate, all moving parts are enclosed below the base cover. The straining nuts in the base are comparatively long to insure a large wearing surface and consequent durability. The cross- head is driven in its vertical travel by a 1-3 hp. West- Fig. 2.—-The Moore Wire Tester for Bending Wire Under Ten- sion, Driven by a Westinghouse Motor, inghouse motor and varying speeds are obtained by change-gears, friction drives and motor regulation. The machine is equipped with a dial vernier screw beam, long column, and counter-balance wedge grip for holding the wire. This type of machine is made in sizes up to 20,000 1b. for single wire tests, 30,000 to 60,000 lb. for strand tests, and 100,000 to €00,000 Ib. for rope tests. The Moore wire-tester, shown in Fig. 2, is used to apply a bending strain to the wire while under a tensile stress. The wire to be tested is gripped at either end und a stress of 25 per cent. of the tensile strength of the wire is applied; meanwhile one of the pair of grips, connected to a swinging arc, bends the wire backward and forward through an arc of 90 deg. around the bend- irg jaws, which are curved to a radius equal to the diameter of the wire tested. This machine, which has keen found especially useful in the tempering shops of wire-cable and rope manufacturers, is motor-driven, and applies the bending action until the wire breaks. It is obvious that the wire which will bend the greatest number of times without rupture is the best for rope manufacturing purposes. The driving of this machine by a motor provides a great improvement over the hand- operated apparatus, securing convenience and accuracy of a degree not attainable in the hand-driven tester. i es For the past year or more reports have occasionally appeared in the daily press to the effect that the Cleve- land-Cliffs Iron Company intended to make extensive improvements to its property at Ironville, near Toledo, Ohio, including the erection of ore docks and a blast furnace. While the company has considered the im- provement of the property referred to, no decision has been reached as to when the work will be done or as to the extent of the improvements. Definite action is not expected in the near future, The Youngstown Foundry & Machine Company, Youngstown, Ohio, has been running its machine shop double turn on some work for the Republic Iron & Steel Company, and is also very busy in its foundry at pres- ent. The annual meeting of