US415919A - montague - Google Patents

Description

(No Model.) 7 Sheets-Sheet 1. T. E. MONTAGUE. MACHINE FOE BENDING VEHICLE SHAF'IS.

Patentd Nov. 26, 1889.

WITNESSES':

ATTORNEYS.

(No Model.)

MACHINE FOR BENDING VEHICLE SHAPTS. No. 415,919.

Patented Nov. 26., 1.889.

WITNESSES:

M WW a. w a. I W

ATTORNEYS.

. Pnzns. mmmmn m Wnhington, me.

. 7 Sheets-Sheet 3.

ATTORNEYS.

Eli n (No Model.)

T E MONTAGUE MACHINE FOR BENDING VEHICLE SHAFTS.

No. 416,919. Patented Nov. 26, 1889..

7 Sheets sheet 4.

- (No Model.)

T.B.MONTAG-UE. MACHINE FOR BENDING VEHIGLE SHAFTS. No. 415,919.

Patented Nov. '26, 1889.

WITNESSES.

(No Model.) 7 Shets-Sheet 5.

T. 'E. MONTAGUE, MACHINE FOR BENDING VEHICLE SHAFTS.

No. 415,919. PaQented Nov. 26, 1889.,

Arm/15m.

7 Sheets-Sheet e.

(No Model.)-

T. E. MONTAGUE. MACHINE FOR BENDING VEHICLE SHAFTS. vN0. 415.919.

Patented Nov. 26, 1889.

WITNESSES:

A TTORNEVS.

N, prrsns. Phoh-Limogmphnr. Washington 11c.

(No Model.) I 7 Sheets-Sheet 7. T. E. MONTAGUE.

MACHINE FOR BENDING VEHICLE SHAFTS. N0. 415,919. Patented Nov. 26, 1889 N. PETERS. PholmL'llhog'l'aphar. Washington, DV 0.

.parts of the shaft-bending machine, all as 'ing said former up in operative position.

UNITED STATES PATENT OFFICE.

THOMAS E. MONTAGUE, OF W'EST LORNE, ONTARIO, CANADA.

MACHINE FOR BENDING VEHICLE-SHAFTS.

SPECIFICATION forming part of Letters Patent No. 415,919, dated November 26, 1889.

Application filed July 3, 1889.

To aZZ whom, it may concern.-

Be it known that I, THOMAS E. MoNrAGUE, of est Lorne, in the Province of Ontario and Dominion of Canada, have invented a new and Improved Machine for Bending Vehicle-shafts, of which the following is a full, clear, and exact description.

My invention relates to machines for bending the shafts or thills of carriages or other vehicles, and has for its object to provide a machine embodying many important improvements on a machine of like character for which Letters Patent of the United States No. 356,952 were granted to me February 1, 1887, whereby the inachine'is rendered more simpleand automatic, thus enabling the shafts to be bent with greater economy of time and labor.

The invention consists in certain novel features of construction and combinations of hereinafter described and claimed.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a plan view of my improved shaftbending machine. Fig. 2 is a detail side elevation, partly in section, and illustrates the connection of the rear ends of the shaftbending bars to the bed or tableof the machine. Fig. 3 is a detail view in cross-section on the line 1 l in Fig. 2, Fig. l-lS aplan View of the operative mechanism arranged under the bed of the machine, with parts in horizontal section. Fig. 5 is a plan view of the wedge. bar of'the machine with its rack. Fig. 6 is an elevation of the left-hand side of the machine, partly broken away and in section. Fig. 7 is a detail sectional view showing the shaft-point former down level with the bed of the machine. Fig. 8 is a detail view show- Fig. 9 is an elevation of the right-hand side of the machine, partly broken away and in section. Figs. 10 and 11 are detail sectional side and edge views, respectively, of the trip arm which automatically raises the heel- :former. Figs. 12 and 13 are detail side and cross-sectional views, respectively, of one of the arms of the lever device by which the heel-former-operating lever is actuated from Serial No. 316,364. (No model.)

- tion of the rear or power end of the machine with parts broken away. Fig. 18 is an enlarged sectional side elevation of the rear or free end of the heel-bending chain and adjacent part-s. Fig. 19 is a detail sectional view taken on the line 3 3 in Fig. 18. Fig. 20 is a plan view of the. inner end of the heel-bending chain. Fig. 21 is a sectional side view of the heel-bending chain laid out flat.- Fig. 22 shows the heel-bending chain and the heel portion of the shafts and their clamp-iron therein, as when bent up by the segmental rack and gearing. Fig. is a plan view of the outer or box link of the heel-bending chain. of the machine, with a pair of shafts bent and the heel-clamp applied. Fig. 25 is a side elevation of a pair of bent shafts with both heel and front clamps applied. Fig. 26 is a plan view of thepair of bent shafts and applied clamps. Fig. 27 is a sectional side view of the pivoted spring-bolt by which the shaftpointformer spreaders are actuated, and Fig. 28 is an edge view of said bolt.

The metal bed or table A of the machine is suitably designed and supported on frontlegs A and rear legs A to sustain the working parts. The pairs of front and rear legs are stayed by cross-bars a a respectively.

The machine has an opposing pair of formers B B, against the curved inner faces of which the central or body parts of a pair of vehicle-shafts are bent, an opposing pair of formers C C, against the curved outer faces of which the points of a pair of shafts are bent, and a former D, against the face of which the heels or butt-ends of the pair of shafts are bent, suitable clamps being provided for holding the bent pair of shafts into shape while they dry or set. The pair of shafts is bent directly by means of flexible plates or bars E E, which press theshafts to the formers B B and are connected to blocks F F, to which are held the flexible plates or bars G G, which press the shafts to the formers C C, and the last or heel bend is given to the Fig. 24 is a detail plan View of parts shafts by a flexible chain H, which presses the shafts to the former D. I will particularly describe these formers and their operating mechanism in the order above named, as follows: The first-bend formers B B are substantially like the first-bend formers shown in my prior patent, except that their pivot-bolts or fulcrums b b are'fitted in slots b of the bedplate A to allow lateral adjustment of the fulcrums to suit pairs of shafts of different thicknesses, and the inner faces of the present formers are covered by metal wear-plates, against which the shafts are forced by the bending-bars E E. The rear ends of these bars E project under the bed A and are fixed to a block 6, which slides upon a dovetail guide 6' on the under side of the bed, and this block is connected by a bent rod or bar 6 with an arm 1', fixed to a shaft 1, which is journaled transversely in the front legs A of the machine and carries a lever I, which may be worked to rock the shaft and its arm 2' to shift the block 6 and bending-bars E E lengthwise of the machine. This rock-shaft I also carries other tappet-arms t t", to which are connected the front ends of rods or bars B B, the rear ends of which are attached to upright levers B B which are fulcrumed at their lower ends to brackets on the bed A and project through slots in the bed up behind anism hereinafterdescribed. Springs'b fixed at one end to the under side of the bed 'A and entering the formers B by their free upturned end, normally spread the formers apart against the upper ends of the levers B Two bars E E are pivoted to the under side of the bed A at e 6 near the slide-block e, and

. these bars project toward the front end of the machine, and to their forward ends the bending-bar blocks F F are held by bolts which pass through lengthwise slots of the blocks, which allows free endwise motion of the blocks and the bars E'E by the rod 6 and as the bending-bars G G are also held to the blocks they will also be shifted endwise at the same time to cause'the end blocks 9 g on the bars G G to clamp the shafts endwise between them and the box-link 7t at the outer end of the chain H, which gives the heel-bend to the shafts.

The blocks F F are each provided with an outer upwardly-projecting flange f, to which the rear end of the corresponding plate G is fixed, and the rear ends of the corresponding bending-plates E are fixed to the inner edges of the blocks and project above their faces,

through which their holding and guide bolts pass, so that the shafts when resting 011 the bed A also lie on the blocks F between the adjacent ends of the bending-plates E G, and the tops of these plates are about level with the tops of the formers B B, and will also lie about level with the tops of the formers O 0 when the latter are raised to operative positions from recesses a in the bed A, which they normally occupy. The bending-bars G G are adapted to pass over the lowered formers O 0 while the first bend of the shafts to the formers B B is being made. The bed A has an opening a, allowing free lateral movement of the bending bars or plates E G. The bars E E are provided with curved and slotted lateral arms 6 6*, which loosely receive guide-bolts fixed to the under side of the bed, and said bars E E also carry rollers E E between which the wedge J on the bar .I enters for forcing the two bars E, their blocks F, and the bars G apart and bending the two shafts by the bars E E up to the formers BB as the wedge-bar J travels toward the front end of the machine. Springs E E held to the bed A, act on the bars E to'restore the bars E E to normal positions when the bent shafts are removed from the machine.

As the construction and arrangement of the two formers O C is alike, a detailed description of one of them with its operating mechanism will suffice, as follows: The former O has an outer face curved to correspond to the bend to be given to one of the shafts at its point or front end. The former is fixed to the upper ends of two rods 0 c, which at their lower ends are fixed to opposite ends of a horizontal head-piece G, which is fitted by a dovetail or other suitable loose joint to slide upon a vertical block G which is fixed to a stirrupplate 0 ranging about parallel with the head-piece C and hinged at opposite ends to lugs 0 0 so as to swing laterally of the machine. This construction allows the former O to rise and fall withv the block and headpiece, and also allows the former to be moved or swung inward automatically by a spring 0 which is fixed at opposite ends to the vertical block 0 and the machine-frame or a i rupright a fixed between the bed A and a lower cross-bar a of the frame. lVhen the spring 0 draws the former inward, the former then will fall by its own gravity within its recess a in the bed A, as shown in Figs. 1 and 7 of the drawings; but when the former is raised by the action of a tappet-arm 7o, fixed to a shaft K, journaled transversely in the front legs A of the frame, the former may be shifted laterally, so as to overlie the bed Aat the outer edge of the recess a to, sustain the former, as shown in Figs. 8 and 24 of the drawings.

To push the two formers C C outward or from each other onto the bed A, as above described, I employ peculiar devices consisting of two pairs of plates Z Z, which are held loosely in recesses provided for them in the bed A by screws or bolts which pass through slots of the plates into the bed. These plates lie crosswise 'of the machine or at right angles to the formers O C, and are operated to spread the formers by means of a sliding bar L, which is fitted in a recess in the bed .A and between the adjacent ends of the plates Z, 011 which inclined faces Z of the bar L act to force the plates outward laterally, and thereby push the formers outward to overlap and be sustained by the bed. This action takes place when the bar L is slid toward the front end of the machine by means of a bolt M, which is hung tothe bed and is struck by the rear end a of a bar or projection N, which is a part of or is fixed to the top of the front wedge J on the wedge plate or bar J, and as this bar commences to move rearward, as hereinafter more fully explain ed.

The bolt M consists of two parts and a spring. (Shown most clearly in Figs. 27 and 28 of the drawings.) The upper part at of the bolt is fulcrumed by a pin m to flanges on the bed A, and at its upper end enters a slot made in the sliding bar L. The lower end of this part on is made hollow or as a casing, which receives in its interior chamber m the lower vertically-movable bolt-bar m the lower end of which is inclined downward and forward to form a head 12, on which the wedge projection N operates. At its front edge and near the top of the bolt-casing chamber m is formed an inwardly-projecting lug or stud m onto or beneath which the bolt-bar m will catch after it falls in front of the rear undercut end n of the wedge projection N, which, as the wedge-bar J moves rearward, will catch the bolt-head n and swing the entire bolt device on its fulcrum, and thereby thrust the inclined faces I of the sliding bar L in between the opposing inner ends of the plates Z l and spread them apart to shift the raised formers C C outward a little onto the bed A of the machine. As the Wedge-bar makes its return movement the beveled front end n of the wedge projection N will strike the heel of the bolt-bar head it and will trip the bar from under the lug m and allow it to rise in the opening m while the wedge projection. N passes beneath the bolt, which rides on it until it slips off the rear end it of the projection, when the bolt-bar again falls ready for the projection N to act on it at its next rearward movement. A spring M, which is connected at opposite ends to the bolt M and the machine-frame,swings the bolt rearward automatically at its upper end m, and thereby shifts the bar L rearward and withdraws iis square opposite side parts next its inclined faces Z from between the spreaderplates 1, to allow the Springs 0 to swing the formers O C inward after the engagement of catches on the second-bend-producing arms 0 with latches P on the machine-frame, and after the clamps have been applied to the bent shafts to hold them in bent condition, as hereinafter more fully explained.

Itwill be understood from Fig. 24 of the drawings that after the plates Z are spread by the inclined faces Z of the bar L, which pass by the plates, the inner ends of the plates bear solidly against opposite square sides of the bar L, while their outer ends bear solidly against the formers O,which thus will be securely held against inward movement by the pressure of bending the shaft-points onto them, and while thus stayed the formers rest at their outer parts on the bed A, which prevents twisting of the formers vertically and obviates injurious strains on the former-supports. The formers O are raised immediately after the first bend has been given theshafts and while the shaft-points are spread apart outside of the formers by means of a pendent arm 7t, fixed t0 the wedge-bar J, striking a tappet-arm k on the shaft K, and thereby turning this shaft and lifting its arms k 75, which strike the former-blocks C C and lift them and raise the formers from their bedrecesses 01 ready for the immediate spreading of the formers by the plates Z and boltM, as above described, this spreading movement being followed by the bending of the shaftpoints to the raised formers C by the swinging arms'or levers 0, next described. These levers O are each j ournaled at o to the under side of the bedA or a boss thereon, and each lever, which has a general segmental or quadrantal form, is made in two parts joined or hinged on the radial dotted line shown in Fig. 4 of the drawings. The inner part 0' of each lever, which extends rearward and inward and carries a roller 0 at its extremity, is thus free to rise on the hinged joint and allow the front wedge J 2 of the wedge-bar J to pass under the rollers and arms as the bar moves toward the front end of the machine, the broad end of the wedge being beveled at o to allow it to easily pass under and lift the roller portions 0' O of both levers. \Vhen the wedge passes by the rollers, they drop in behind the rear inclined faces of the wedge, which as the bar J next moves rearward forces the rollers O O farther apart, thereby turning the levers O on their pivots o and causing the upwardly-projecting lugs 0 on the outer corners of the levers to force the outer ends or heads 9 of the two bars G toward each other, and thus give the second lateral bend to the shafts by pressing them against the outer faces of the formers C C. To relieve friction, the bar-heads g are provided with rollers g, against which the lugs 0' of the levers 0 act in bending the shafts. Springs 0 fixed to the hubs of the levers and acting on pins 0 fixed in the bed A, restore the levers to normal positions. Rollers 0 journaled to the inner faces of the quadrantlever lugs 0, run on top of the front end of the bed A and relieve the friction to an extent making unnecessary the use of oil, which when applied to bearings or guides provided on my prior machine-bed for the bending-bar heads would stain the shafts, which are left TIO clean or free from oil when bent in this machine.

When the levers O have carried the bars G G inward far enough to snugly clamp the shafts to the formers C C, headed catches 0 on the levers automatically engage the latches P, the beveled tops of which are presented to the moving catches. These latches each consist of a vertically-ranging bar or rod which is fitted in two flanges of a bearing-plate a,

V which is bolted to one of the front uprights a of the machine-frame. The latch-bar is provided at its lower end with a laterally-bent arm 19, which underlies a tappet-arm 1' on the shaft 1' in such relation that during the latter part of the rocking motion of the shaft which draws the levers B and the bendingbars G E toward the front end of the machine these arms 1' on the shaft 1 will pull down both the latches P P to release the bent shafts from the formers. Springs 1) on the latchbars restore the latches to normal raised positions, said springs acting between the lower flange-bearing and a pin or shoulder near the upper ends of the latches. As soon as the levers O are disengaged from the latches the springs 0 restore the levers to normal positions. (Shown in Fig. 4 of the drawin gs.) The catches 0 on the levers O are slotted to receive their fastening-bolts, which allows adjustment of the catches to properly engage the latches when shafts of different thicknesses are bent on the machine. The construction of these catches and latches for holding the second bend of the shafts to the formers C C is best shown in Figs. 4., 15, and 16 of the drawings. It will be noticed that these latches P hold the shafts to the formers C, while the wedge J which by action on the levers O has bent the shafts to said formers, is allowed totravel on rearward past the levers and until the gravity-bolt M is clear of the wedge projection N, so that its spring M then may act to throw the bolt rearward at the top, and thus shift the sliding bar L rearward and allow the springs c c to pull the formers C C toward each other, so that they will then drop bygravity into the bed-recesses a it being understood that the wedge-bar lug at this time is not acting on the arm k of the shaft K. This lug 7a is of such length at its lower face that during the latter part of the forward travel of the wedge-bar J the lug will depress and ride on the arm and hold the shaft-arms 70 7t, and consequently the formers C C, up long enough to assure the lateral spreading-of the formers onto the bed A by the plates 1, actuated from the bolt M and wedge projection N, and as the wedgebar begins its rearward travel its lug 713' will retreat over the arm 716 and pass clear of it, thus allowing the indrawn formers C O to drop into the bed-recesses a as above described, as there will be nothing to support the raised formers after they are drawn over the recesses by their springs 0 The wedge-bar J (shown detached in Fig. 5

of the drawings) has a main body portion, upon which the wedges J J are held, and also has a stem, upon the upper face of which is fixed a rack J into which a pinion of the dri ving-gearing meshes to reciprocate the bar, as presently explained. The sides j j of the inclined acting ends of both these wedges are pivoted near the apices of the wedges, and the rear ends of said sides are held to the wedge-bar by screws or bolts passing through slotted lugs on the sides, which thus may be nicely adjusted to govern the width of the wedges as varying thicknesses of the shafts may require.

Behind the pivoted adjustable sides of the wedge J, which produces the first lateral bend of the shafts, the wedge-bar is provided with laterally adjustable side plates j j, which may be set inward, according as the front plates j j of this wedge are adjusted, said plates j being also held by screws or bolts passing through slotted lugs on them into the the wedge-bar. These side plates j hold the bars E E outward to any extent to which they may have been spread apart by the plates j of said wedge J, and thus give ample time for the operation of the spreader-plates Z by the projection N on the wedge J 2 to lock the formers C 0 against the pressure of the points of the shafts while being bent onto them! The rack J 3 on the stem of the wedge-bar J is engaged by a pinion 1', which is fast on a transverse shaft R, journaled in the rear legs A of the machine.- Agrooved guide-pulley J journaled to the adjacent frame-leg A receives loosely a tongue or rib formed on the under side of the bar J below its rack and the pinion 4' engaging it and sustains the rear'end of the bar, the front part of which is provided with opposite side I-shaped ribs which slide in corresponding grooves or slots at the inner opposing faces of the bars a a at the front end of the machine. (See Figs. 9, 15, and 17 of the drawings.) Springs 7' 3' held to supports j set a little distance from opposite ends of the wedge-bar rack, and, projecting downward and inward toward the rack, are compressed or put in tension by the pinion 1- as it runs out of the rack at the extreme of each half-stroke of the wedge-bar, so that as the motion of the pinion is reversed at both half-strokes of the bar the pressure of these springs will draw or pull the rack into engagement with the pinion to assure auto- ITO matic reciprocation of the rack-bar by the pinion. A weighted elbow-lever J which is fulcrumed at its angle to one of the machinelcgs A acts by its upper short arm against a pin j, fixed in the edge of the wedge-bar J, to carry said bar back to normal position, when the point of its wedge J will stand immediately behind the rollers E of the bars E, which spread the plates E to give the first bend to the shafts. A lug on the machineleg A stops the downswing of the lever J 5 when it has carried the wedge-bar to this position. (See Figs. 6 and 9 of the drawings.)

To the fulcrum of the lever J is fixed a ratchet-wheel J which is normally engaged by a pawl j, which is pivoted to the adjacent machine-leg A and may be lifted from the ratchet-wheel by a cam f, which underlies it and is pivoted to the leg A and is provided with an arm or stem j to which is connected one end of a rod j, the other end of which is pivoted to the sliding block 6, which is connected by the rod 6 with the arm t' of the shaft 1, which is rocked by the lever I. The cam 7' is so set that the pawl j may engage the ratchet-wheel J? to prevent downfall of the weighted end of the lever J 5 until the lever I is swung forward to release the shafts the forward stroke of the wedge-bar and be-' fore the shafts are released from the clamps or formers of the machine, and as hereinafter more fully explained.

I particularly describe the mechanism for rotating the shaft R and its pinion r for reciprocating the wedge-bar J, as follows: This shaft is journaled in the rear legs A of the machine a little below the bed A, and on it are placed loosely two gear-wheels R R which are provided at their inner hub portions with half-clutches adapted for alternate engagement by a double clutch 0', which is splined to the shaft, so as always to rotate with it. A spring r interposed between the gearwheel R and the clutch r, normally forces the clutch into engagement with the other gear-wheel R beyond which on the shaft R is fixed a collar to resist the thrust of the clutch-spring. (See Fig. 17 of the drawings.) The clutch r is peripherally grooved to receivean inclined or wedgeshaped lug s, which is fixed to the upper side of a shipper-bar S, which at its rear part is fitted in suitable guideways on the cross-bars a of the legs A and at its forward end is pivoted to thelower end of a lever S, which is fulcrumed at s to the machine-bed A or a lug thereon. This shipper-bar S also carries two belt-tightening grooved pulleys or wheels 3 s, which are adapted, respectively, to tighten loose belts S S", which run from grooved pulleys t if on the main driving-shaft T to upper grooved pulleys or wheels I; t. The pulley If is fast to. a short shaft which is journaled in the-lefthand standard A of the machine-frame and carries fixedly a pinion t, which meshes with the loose gear-wheel R and the pulley t is fast on a short shaft which is journaled in the opposite or right-hand standard A" of the frame and carries fixedly a pinion t, which meshes with an idler-pinion t, journaled on a shaft in the standard A", and which meshes with the loose gea-rwheel R. \Vith this construction, and as the lever S is drawn forward or toward the operator, the

shipper-bar S will be forced rearward to ward the shipper-bar S will be drawn forward to cause its lug s to shift the clutch 4" clear of the gear-wheel R and engage it with the other gear-wheel R, and simultaneously the pulley s on the shipper will tighten the belt S and rotate the pulley i from the pulley t and consequently turn the pinion t and the idler t to rotate the gear-wheel R, shaft R, and pinion r in the reverse direction for giving the return or rearward movement to the wedge-bar J, and thereby cause its wedge J 2 to actuate the quadrant-levers O O and the outspread bars G G to give the second bend to the shafts against the raised formers C C. The gear-wheels R R are held against backward movements by pawls r r, respectively, which are pivoted to the bed A of the machine. A spring S, connected at opposite ends to the lever S and the bed A, normally holds the lever in an intermediate or neutral position.

I will next describe the heel-former D and its operating mechanism and connections, as follows: The former itself is substantially like the one shown in my prior patent, and is hung by a link (1 from a pivot (l' in the end of a lever U, which is fulcrumed by a pin a to a vertical standard A, and near its outer end is provided with a counter-weight a. The former D is fitted loosely by a dovetail joint to the vertical standard A, held to the bed A and braced bya suitable bar or link a to the top of the standard A*. lVhen the le ver U is lowered by hand to depress the former D to the pair of shafts on the bending-chain H, as indicated in dotted lines in Fig. 9 of the drawings, the pivot 61 will pass a line which would bisect the lever and former-pivots a (Z and thus lock the former secu rely against tendencyto lift while the heels of the shafts are being bent up around it by the chain II, as hereinafter described.

In this machine I have provided devices for automatically raising the former without attention of the operator, who may thus save time in preparing-the next pair of shafts for the machine. These devices consist of atwoarmed lever U, which engages the lever U, and a trip-arm U which engages the lever U. The lever U has a central shaft portion a which is journaled in a long beariugu on the frame-standard A and has an outer arm a which at its outer end is provided with a loop or eye it, which is loosely fitted around the former-lever U. The other arm n of the lever U projects from the inner end of the. lever-shaft a in the path 'of the trip-arm U which is fixed to an upper transverse shaft V, which is journaled tothe frame-standards A A and carries fixedly a pinion 1', which meshes with a segmental rack V, journaled by a short shaft e to the standard A. A lug or bracket V fixed to the lower rear corner of the rack V, is provided with a slot "1: which loosely receives the rearwardly-projecting stem h of the outer or box link h of the shaft-heel-bending chain II to cause bending of the chain by the swinging of the rack. The trip-arm U turns with the shaft V, which is rotated from the main drivingshaft T by a belt T, which runs from a grooved pulley t on said shaft to a larger grooved pulley 6 whose shaft is journaled in the frame-standard A and carries fixedly a pinion t which engages a gear-wheel V on the shaft V. The belt T is normally loose, but may be tightened by pressure against it of a pulley 23 which is journaled on an arm i fixed to ashaft W, journaled in the framelegs A and provided with a t-readle T which, when depressed by the operators foot, tightens the belt T, and thereby causes the shaft V and pinion v to rotate over backward and turn the rack V, and thereby carry the outer end of the chain It upward to bend the heel portions of the shafts to the lowered former D. The arm a of the lever U is made wedgeshaped in cross-section, and at its broader edge is provided with a transversely-grooved wear-plate a, on which the toe or blade 16 of the trip-arm U acts to swing the former-lever U upward to raise the former as the rack V is turned downward to straighten the chain H by a reverse rotation of the shaft V and pinion 1:, effected by peculiar mechanism presently explained. The blade a of the trip-arm U is pivoted at u to and within the inner portion a of the arm, the chamber a of which part u is somewhat wider than the thickness of the blade U8, and aspring n suitably held to the part a presses the blade normally against one side wall of the chamber a, but allows the blade to yield toward the spring. \Vhen the shaft V is rotated backward to raise the chain II to make the heel-bend in the shafts, the blade a of the trip-arm U will strike against the thin or feather edge of the arm a of the lever U, which then has the position indicated in dotted lines in Fig. 9 of the drawings, and the blade will yield toward the spring a to allow it to safely pass the arm a, which it will do a few times during the bending of the shafts to the former D, as the shaft V and pinion 71 will make a few revolutions while this bend is being made. \Vhen the shafts are bent, and after the clamps are applied to them, as hereinafter explained, and after the motion of the shaft V and pinion o is reversed to lower the chain H, the rotating-trip-arm blade a as it reaches the arm u of the lever U, then in raised dotted position, will fairly strike the coneaved edge plate a of the arm and will swing it around to the position shown in full lines in Fig. 9, and thereby automaticall y raise the lever U and former I), and as this lever in swinging upward passes its center of gravity, aided by the counter-weight u, it will swing the arm a sufficiently far under and forward to carry it out of the path of the trip-arm U which during its one or more subsequent rotations while the rack V and chain H are being lowered will not strike the rock-lever U, as will readily be understood. The reverse motion is given to the shaft V for lowering the rack V and bending-chain ll by a grooved pulley 25 on the driving-shaft T, from which a loose belt T runs to a grooved pulley '20, which is fast on a shaft w, journaled in the rear end of a lever WV,which at its forward end is fnlcrumed at 20 to another lever V, which is fulcrumed at w to the side of the machine-bed A and at its rear end rests by gravity on top of a cam W operated from the shaft or pivot r of the segmental rack V, as presently explained. The shaft 10 of lever XV also carries a friction-wheel W which is adapted to be pressed against the lower face of the pulley t ,-from which the shaft V may be rotated in either direction through the gearing t V". The lever W has a pendent slotted arm receiving a headed pin w, fitted in a lug 011 the frame-leg A or on the bed A. This pin steadies the lever laterally as it is moved up or down on its fulcrum w on the other lever \V. The lever \V has an upwardly-projecting lug, to which is journaled a cam Vflwhich overlies the lever W, and has an upwardlyprojecting arm 1.0 to which is attached the rear end of a rod \V, which extends forward and is connected to the lever I at considerable distance from its shaft 1, so that as this lever is shifted to draw the levers B from behind the formers B and to move the shaftbending bars E G forward to release the shafts from the formers the cam 7 will be rocked on top of the lever WV to lift the lever NV and carry its friction-wheel V up fully to the pulley i and at the same time tighten the slack belt T to reverse the motion of the pulley t and the shaft V for lowering the rack V and chain H.

Prior to the final lifting of the frictionwheel \V to the pulley t by the independent movement of the lever TV through the medium of the cam NV", bearing on the other lever V', which then rests on the cam V the lever is itself lifted, so as to raise the lever TV to carry its friction-wheel V upward about one-half the normal distance between the friction-wheel and the pulley i the balance of the upward movement being effected by the shifting of the lever I, as above described. The initial upward movement of the friction-wheel is caused by the rotation of the cam beneath the lever W. This cam is fixed to a shaft. 10, which is journaled in the legs A and has a fixed radial arm 10 to which is connected one end of a rod 10 the other end of which is connected to the extremity of a crank-arm 10", which is fast to the shaft or axis 4: of the segmental rack V ICC ITO

which raises and lowers the heel-bending chain H. \Vith this construction the cam "W is turned to lift the back end of the lever W from the shaft r of the segmental rack V as said rack is swung forward to bend the shafts to the former D; hence while the heel-bend is given the shaft-s the lever W will also be lifted with the lever l as the latter when raised by the cam W lifts on the cam V of the lever 7, and consequently lifts the frictionwheel V thereof about half-way toward the face of the pulley i ready to be pressed to it subsequently by the action of the cam 'W operated by the rod and lever I,as above described. As the rack V is lowered the smaller radius of the cam \V will again be turned uppermost by the crank and rods w 20 21: to allow both levers XV XV to fall and lower the friction-wheel \V from the pulley it and at the same time slack olf the belt T so that the pulley t has no driving effect on it. The peculiar operation of these two levers \V lV and their cams or eccentrics \Wll is important. It is obvious that if the friction-pulley W' were hung directly 011 the lever \V, so as to be pressed by it to the pulley t, the segmental rack V would start to run back or down without allowing time for application of the retainii'ig-clanips to the bent shafts, or the rack might be run back even before the heel-bend of the shafts was fully made; and, on the other hand, if the lever \V alone were used by fulcruining it directly to the bed A and having its cam act thereon to lift the friction-wheel W to the pulley t the friction would beon while the segmental rack V was down, and the machine would jain. It is manifest, therefore, that by providing the two levers \V \V and their cams and connections, above described, and lifting the friction-wheel W half-way by the lever V, operated by the cam W turned by the rising rack V the friction-wheel will be gradually and positively lowered from the pulley t during the dropping of both levers \V V as the cam \V is turned back by or from the lowering rack V.

It will be understood that the clamps hereinafter described will be applied to the bent shafts before the lever I is pushed rearward to slack off the formers B and bending bars or plates E G and press the friction-wheel \V to the pulley t for running back the rack V and chain H prior to removing the clamped shafts and placing another pair of shafts in the machine.

I particularly describe the shaft-clamps as follows: I employ a body and point clamp X and a heel-clamp Y. (Shown in Figs. 24, 25, and 26 of the drawings.) The body and point clamp X is made with a longitudinal center bar '51:, to the forward end of which is fixed a board or plate as. The bar 00 is provided with successively longer cross-bars 00 which are bent downward at opposite ends to provide fingers ad, which engage the outside faces of the two bent shafts. The plate .00 is provided at each side with a numbersay four of laterally-projecting arms x, which are also bent down to provide fingers m adapted to bear on the inner sides or faces of the bent shafts, and at the two back corners of the clamp-plate 5c are fitted a couple of diverging bolt ends at, which have suitable nutbearings on the plate and have downbent outer ends forming fingers at, which overlap the outer sides of the extreme front ends or points of the two shafts. Vertical apertures or slots 50 are made in the inner faces of. the formers B B and in the outer faces of the formers C G and at the inner faces of the bending-bar heads g g to receive, respectively, the fingers 93 00 and a of the clamp X while the pair of shafts X X are bent to the formers, as shown in Fig. 24 of the drawings. The front clamp-bolt ends cc are adjustable in their nuts to allow their fingers at to be set relatively to the adjacent fingers 00 to accommodate shafts of different thicknesses.

The heel-clamp Y is made with a clampinghead y, a flexible metal strap or band y, a shoe or box bracket :1 fixed to the outer end of the strap, and a hook-bar g engaging the box 1 and adapted to be hooked into a footblock 11 which is placed over the shafts which lie on the strap, and may be set down against the shafts by a screw if, which is threaded into the top of the head y, said head being open at one side to admit the shafts. A recess a in the machine-bed A receives that part of the clam p-head g which is below the shafts. This heel-clamp Y is practically the same as the heel-bend clamp shown in my prior patent, except that it has a hole .2 in its box-like end piece 3 which receives a bolt or pin Z, fitted in the outer or end box-link h of the chain II, as next described. This chain H is connected at its inner end to the bed A, and at its outer end link h carries a stem 71., which enters a slot 2' in the segmental rack lug or bracket V The chain is made up a series of blocks which support the shaft-heels or the clampstrap y, 011 which they rest. These blocks are connected by metal links, which are preferably pivoted within grooves of side flanges or walls of the blocks, the pivots ranging gradually higher from the inner toward the outer links of the chain or from below the face or bed of the innermost link to above the face or bed of the outermost link to cause the chain to automatically lengthen a little to accommodate the endwise stretching of the wooden shafts while their heels are being bent upward to the former D by the chain. It is obvious as the chain is bent upward to press the shafts to the former D that the arm 7b of the outer chain-link h will be withdrawn some little distance in the slot o of the rackarm V -say about two inchesthis move ment being due to the curvature give-n the chain and the location of the shaft or pivot 12 of the segmental. rack V above the plane TTO of the bending-chain on which the shafts rest. I avail myself of this withdrawal or endwise motion of the chain-arm h to cause the pin Z (above named) to automatically bend down and hold flat to the chain II the end box 1 and strap 3 of the heel-clamp, which are disposed to curl upward afterlittle use, and ordinarily have had to be pressed by hand flat to the bending-chain while the shafts were being put into the machine.

Figs. 18 and 19 of the drawings show the pin Z fitted to slide in suitable hearings on the link-stem h and in the end wall of the link h, and preferably within a casing 2, fixed to the stem. The pin Z has a transverse pin or collar .2 between which and the end wall of the link It or other suitable resistancepiece is placed a spring .2, which normally expands to press the pin Z outward to withdraw it from the hole 2' in the clamp-strap box when the outer end of the pin is not confined by contact with the end wall of the racklug V at one side of its slot o With this construction it is obvious that when the chain H is approaching flat position the gradual outward movement of the end chain-link h and its stem 71. will cause the outer end of the pin Z to strike the end wall of the lug V and force the pin Z inward as its spring .2 yields and into the hole 2 in the clamp-strap box f to hold the strap flat to the bending-chain to receive the straight shafts, and as the chain is bent upward by the rack V the backward or downward slip of the link and stem h 71 will free the outer end of the pin Z from the lug V and allow the spring 2 to expand and automatically withdraw the pin Z from the box 1 to free the clamp and allow it and the bent shafts held by it to be easily removed from the machine. A pin 7L2, passed through any one of a series of holes in the chain-link stem 72/ behind the end wall of the rack-lu g V maintains loose connection of the lug and chain.

In View of the aforesaid general description of the machine a comparatively brief statement of its operation in bending a pair of shafts will suffice, as follows: Before the shafts X X are placed in the machine its parts will have the relati 7e positions shown in full lines in Figs. (3 and 9 of the drawings that is to say, the heel-bend clamp-head y rests in the bed-recess a, and the clamp-strap y is held down flatto the bending-chain II by the pin Z entering the strap-box 1/ and the spreader-bars and bending bars or plates E E F G project straight toward the front end of the machine, as shown in Figs. 1 and 1 of the drawings, and the formers 13 will be spread apart by their springs 0*, which hold them against the upper ends of the levers '3 which now are thrown forward, as shown in Figs. 1, 6, and 9 of the drawings. The pointformers O, and also their spreader-plates and bar Z L, lie flush with the top of the bed or table A of the machine, and the wedge-bar J is held by the counter-weight or lever J in normal position for starting to give the first bend to the shafts, or with its point a little behind the rollers E of the spreader-bars E, to which the bending-bars are attached. \Vhen the two shafts X X are laid on the bed A and bending-chain H, and with the bending-bars E E lying together between them, the lever I will be pushed rearward in direction of the arrow 1, which will carry the bar 6 rearward to clamp the shafts endwise between the bending-chain box h and the shoulders g of the end blocks g of the bendingbars G, and at the same time the lever I will move the levers B rearward to draw the front free ends of the first-bend formers B toward each other a little. The lever I will be engaged with its catch-plate I which is fixed to the machine-bed,to lock the parts in these positions. The lever U will next be swung down by hand to the position shown in dotted lines in Fig. 9 of the drawings to lower the heel-bend former and clamp the shafts between it and the bending-chain H, and this adjustment of the leverU swings the arm a of the rock-lever U into the path of the trip-arm U on the shaft V of the machine. The movement of the lever I in direction of the arrow 1 has, through the rod V lowered the friction-wheel \V a little farther from the driving-pulley '6 It will be understood that the main driving-shaft T is being rotated by a belt (not shown) shipped from the loose pulley '1 to the tight pulley T*- on the shaft. All now being ready to give the first lateral bend to the pair of shafts, the lever S will be shifted rearward in direction of the arrow 2, which will move the bar S forward and carry the wheel .5 on it to the belt S and tighten it, thereby causing rotation of the shaft R from the gear-wheel R now engaged by the clutch 4", and thereby rotating the pinion r, engaging the wedge-bar rack to drive said bar forward between the rollers E E and spread the bending-bars E E, and thereby bend the shafts X X to the formers B B, respectively, the front bending bars or plates G G meanwhile sweeping or spreading outward over the bed A and the point-formers O C to positions outside these formers, and so that the end blocks 9 of the bars G or the anti-friction rollers g thereon strike the lugs 0' of the point-bendinglevers O O, which then have the positions shown in Figs. 1 and 4 of the drawings. During the latter part of the forward movement of the wedge-bar J, and while the straight side extensions j 7" of the wedge J were moving between the rollers E and holding the shafts to the formers B, the heel of the wedge J of'the bar has lifted the inner parts of the levers O O, which then fall in front of thelatter wedge, and about at this time the lug k on the wedge-bar strikes the am of the shaft K and causes the arms 7c of said shaft to lift the two formers G from their recesses a in the bed A and slightly above the level of the bed and inside of the spread bending-bars G. The lug k is long allows the wedge-bar to rest at the comple-.

tion of its forward stroke, the front spring 7' being compressed by the pinion. All being now ready for the return or rearwardstroke of the wedge-bar, the lever S is drawn forward by the operator in direction of the arrow 3, which moves the bar S rearward and slacks off the tightener s from the belt S and almost simultaneously causes the wedge s on the bar to slide the clutch r from the gear-wheel R and engage it with the other gear-wheel R on the shaft R, and also carries the other wheel 8 on the bar to the belt S and tightens it, and thereby causes the shaft R and its pinion r to turn in reverse direction from that first described. The spring j now causes engagement of the wedge-bar rack J 3 and pinion r,

and the wedge-bar begins to travel rearward on its return-stroke. The first effect is to cause the projection N of the wedgebar J to strike the bolt-bar m of the leverbolt M and throw the bar L forward to spread the plates Z apart and shift the formers C out ward a little, so that they overlie or overlap the bed to be sustained by it, as shown in Figs. 8 and 24 of the drawings, and the parts L I then brace the formers C 0 against inward pressure. Immediately the formers C are thus raised and shifted outward laterally the wedge J 2 acts on the rollers O of the levers 0 to separate them and cause the lever-lugs 0 0 to approach each other, and by pressing bar.

rearward by the pinion until said pinion runs out of the front end of the rack J 3 and compresses the rear spring 3 on the wedge- It will be understood. that, although the wedge J slips from between the first-bend the point-formers.

rollers E during the formation of the second or point bend, the shafts will be held to the first-bend formers by the leverage exerted at It will also be understood that as the wedge-bar lug it passes from over the tappet-arm k the shaft K will rock back to initial position and its arms 7t drop from under the former-slides C and leave the formers G free to drop by gravity after the bent shafts are removed, as presently explained. As soon as these two bends are given the shafts by the formers B O the bodyclamps X will be applied to the shafts, the clamp-fingers :0 m a, being placed into the apertures a provided for themin the formers B C and the bending-bar blocks g. All is now ready to give the heel-bend to the shafts by the chain H To accomplish this, the treadle T is pressed down to throw the wheel 23 to the belt T and tighten it, thereby revolving the drive-pulley t and gearing t V V v and causing the segmental rack V to swing forward and carry the chain H upward to bend the heels of both shafts X X up around the former D, the arm a yielding laterally as it strikes the arm u of the lever U and passing by it without other effect. During the bending of the shafts to the former D the withdrawal of the chain-stem h in the racklug V allows the spring 2 to withdraw the pin Z from the box 1 of the clamp-strap, and the crank-arm w on the rack-shafto, through the rod-connections 2 0 10 shaft .20 and cam W will lift both levers WV 7 and carry the friction-wheel W up about halfway to the face of the driving-pulley 25 When the heelbend is complete, the treadle T will be released and the operator will hook the rod 3 into the strap-box g and the clamp-plate 1 as shown in Figs. 24:, 25, and 26 of the drawings, thereby completing the attachment of the heel-clamp to the bent shafts. To release the bent and clamped shafts from the machine, the treadle T will again be depressed to tighten the belt T, and the lever I will then be unlatched and swung forward in direction of the arrow 4, thereby drawing 'the levers B forward to allow the first-bend formers to relax their hold on or retreat a little from the shafts, and simultaneously the cam V which by pressure on the lever WV I will lift the lever WV and press the frictionwheel to the face of the pulley t and thereby impart to it a rotation the reverse of that above described for raising the bending chain H, and consequently will lower said chain to the bed and away from the bent shafts, which are retained in shape by the body and heel clamps X Y. During this downward motion of the heel-bending chain the arm a on the shaft V will fairly strike the arm a of the rock-leverUand automatically swing the lever U upward to lift the heel-former from the shafts, and simultaneously the rocksha'ft arm 20 will, through the connecting-rods 40 "w and shaft 10, turn the cam or eccentric V to gradually lower both levers W \V and carry the friction-wheel W away from the pulley t after the downswinging segmental rack V has acquired sufficient momentum to fall by its own gravity and carry the bending-chain H with it and press it fiat upon the bed A of the machine. During the downswing of the segmental rack V and the chain H the contact of the pin Z with the end wall ofthe rack-arm V will force the pin inward through the end wall of the box-link h of the chain H, ready to engage the hole 5 of the box g of the next clamp Y placed in the machine to hold the clamp-strap y fiat upon the bending-chain before placing the next pair of shaft-sticks in the machine. As the bent and clamped shafts are released from the former by the action of the lever I, rod eiand block 9, as above described, the pawl j, through the medium of the cam f, armj and rod 3' will be disengaged from the ratchet J of the counterweighted lever J and this lever, which had been raised by the wedge-bar pin 3' as the second bend was given the shafts by the wedge J will fall again to the stop jland by action on the pin j will automatically slide the barinto normal position, or so that its wedge J stands a little behind the bending-bar rollers E and all is now ready for inserting, clamping, and bending the next pair of shafts in the manner above described.

Having thus fully described my invention, what I claim as new, and desire'to secure by Letters Patent, is-

1. In a shaft-bending machine, the first-- bend formers provided with laterally-adjustable fulcru ns, substantially as herein set forth.

' 2. In a shaft-bending machine, the secondbend or point formers adapted for lateral movement, in combination with spreaderplates fitted between the formers, a wedgebar fitted between the plates, a lever or swinging bolt shifting the wedge-bar, and a sliding bar having a shoulder actuating the lever or bolt to shift the wedge-bar, spreader-plates, and formers and brace the latter against inward pressure, substantially as herein set forth.

3. In ashaft-bending machine, the secondbend or point formers normally lying below the machine-bed, combined with means, substantially as specified, for lifting them above the bed, as and for the purposes set forth.

4 In a shaft-bending machine, the secondbend or point formers normally lying below the machine-bed and supported'for vertical and lateral movements, substantially as herein set forth.

5. In a shaft bending machine, the secondbend or. point formers normally lying below the machine-bed and supported for vertical and lateral movements, combined with means,

substantially as specified, for imparting said movements to them, substantially as herein setforth.

6. In a shaft-bending machine, the secondbend or point formers normally lying below the machine-bed and supported for vertical and lateral movements, combined with a shaft having tappet-arms to lift the formers, plates fitted between the formers, and a spreader-bar working between the plates to press them outward and brace the raised formers laterally, substantially as herein set forth.

7. In a shaft-bending machine, the secondbend 'or point formers normally lying below the machine-bed and supported for vertical and lateral movements, combined with a shaft having tappet-arms to lift the formers, plates fitted between the formers, a spreaderbar working between the plates to shift them outward and brace the raised formers laterally, and a lever or bolt actuating the spreader bar, substantially as herein set forth.

8. In a shaftrbending machine, the secondbend or point formers normally lying below the machinerbed and supp rted for vertical and lateral movements, combined with springs normally drawing the formers inward and plates stopping the formers and subse-.

guently spreading them apart after they are raised above the bed, substantially as herein set forth.

9. In a shaft-bending machine, the combination, with a bed or table, of a pair of firstbend formers fulcrumed thereto at one end,

a pair of second-bend or point formers, presser-bars adapted to bend the shafts to the formers, plates fitted to the bed between the second-bend formers, a bar fitted between the plates, a lever or bolt engaging said bar for spreading the plates and bracing the pointformers, a pair of spreaderbars or levers separating the first-bend formers, and a sliding bar carrying a wedge separating the spreadingbars and presser-bars to press the shafts to the first-bend formers, said wedge-bar having a shoulder actuating the lever and bar which spread the bracing-plates between the secondbend formers, substantially as herein set forth. v

10. Ina shaft-bending machine, the combination, with a bed or table, of a pair of firstbend formers fulcrumed thereto at one end, a pair of second-bend or point formers normally lying in recesses of the bed and adjustable vertically and laterally, presser-bars adapted to bend the shafts to the formers, a shaft having tappet-arms adapted to lift the point formers, plates fitted between the pointformers, a bar fitted between said plates, a lever or bolt engaging said bar for spreading the plates and bracing the point-formers, a pair of spreader-bars separating the first-bend formers, and a sliding bar carrying a wedge separating the spreader-bars and presser-bars jection acting on the tappet-shaft to lift the point-formers above the bed, and provided also with a shoulder subsequently actuating.

the lever and bar to spread the bracingplates A between the raised point-formers, substantially as herein set forth.

11. In a shaft-bending machine, the combination, with the point-formers and presser bars or plates adapted to bend the shafts to them, of levers adapted to the presser-bars and a sliding bar having a wedge actuating the levers to bend the shafts to the formers, substantially as herein set forth.

12. In a shaft-bending machine, the combination, with the point-formers and presser bars or plates adapted to bend the shafts to them, of levers adapted to the presser-bars, a sliding bar having a wedge actuatin g the levers to bend the shafts to the formers, and latches retaining the shafts when bent to the formers, substantially as herein set forth.

13. In a shaft-bending machine, the combination, with the point-formers and presser bars or plates adapted to bend the shafts to them, of levers adapt-ed to the presser-bars, a sliding bar having a wedge actuating the levers to bend the shafts to the formers, and springs retracting the levers when the wedge is withdrawn from them, substantially as herein set forth. v

14. In a shaft-bending machine, the combination, with the point-formers and presser bars or plates adapted to bend the shafts to them, of levers adapted to the presser-bars for bending the shafts to the formers, said levers provided with anti-friction wheels running on the machine-bed, substantially as herein set forth.

15. In a shaft-bending machine, the combination, with the point-formers and presser bars or plates adapted to bend the shafts to them, of levers adapted to the presser-bars for bending the shafts to the formers and provided with inner anti'friction rollers, and a sliding bar having a wedge operating between said rollers to press the shafts to the formers, substantially as herein set forth.

16. In a shaft-bending machine, the combination, with the point-formers and presser bars or plates adapted to bend the shafts to them, of levers adapted to the presser-bars and made in two hinged parts, substantially as described, whereby a moving wedge may in sliding heel first lift parts of the levers, which then drop in front of the wedge for operation by it on its return movement, substantially as herein set forth.

17. In a shaft-bending machine, the combination, with the point-formers and presser bars or plates adapted to. bend the shafts to them, of levers adapted to the presser-bars, latches retaining the levers when the shafts are bent to the formers, and a shaft provided with tappet-arms disengaging the latches when the shaft is rocked, substantially as herein set forth.

18. In a shaft-bending machine, the combination, with first and second bend formers, spreader-bars, bending-bars, and levers adapted to press the shafts to the formers,and latches retaining the bent shafts at the second-bend formers, substantially as specified, of a shaft I, having crank-arms t 11 4?, a bar e connected with the arm {and the bending-bars, levers B and rods B, connecting the levers to the shaft crank-arms 2", said arms 71 located to disengage the second-bend lever-latches, substantially as described, whereby as the shaft I is rocked the bent shafts will be unclamped endwise and laterally to loosen them for removal from the machine, as herein set forth.

19. In a shaft-bending machine, thecombination,with the bed or table, of a pair of firstbend formers fulcrumed thereto, a pair of second-bend formers, a pair of spreader-bars, flexible bars or plates actuated by the spread er-bars to bend the shafts to the first formers, a pair of levers adaptedto the flexible bars for bending the shafts to the second formers, and a reciprocating bar having two wedges set with their points facing each other, one wedge effecting the first bend. of the shafts as the bar is moved in one direction and the other wedge effecting the second bend of the shafts as the bar moves in the opposite direction, substantially as herein set forth.

20. In a shaft-bending machine, the combination, with the bed or table, of formers B B, fulcrumed thereto at b l),spreader-bars E E, fulcrumed to the bed at 6 6 blocks F F, held to the free ends of the bars E E, presser bars or plates E E, connected at one end to the bed and at the other end to the blocks and adapted to the formers B B, forniers C C. held in front of the formers B B, presser bars or plates G G, held at one end to the blocks F and extending forward therefrom, and levers O O, fulcrumed to the bed and having lugs 0 0,adapted to the plates G G, substantially as herein set forth.

21. In a shaft-bending machine, the combination, with the bed A, having recesses a of formers O, sustained by vertical slides 0, vertical blocks 0 in which said slides are adjustable, and laterally-swinging stirrupplates 0 to which the blocks 0 are held, substantially as herein set forth.

22. In a shaft-bending machine, the combi-,

nation, with the bed A, having recesses 00', of formers O, sustained by vertical slides C, blocks C and laterally-swinging stirrupplates C combined with springs o drawing the formers inward, substantially as herein set forth.

23. In a shaft-bendingmachine, the combination, with the bed A, having recesses a of formers C, sustained by vertical slides blocks C and laterally-movable stirrupplates G a shaft K, having tappet-arms 7r. k 10 and a sliding bar provided with a lug 76, automatically lifting the formers C, substantially as herein set forth.

2i. In a shaft-bending machine, the combination, with the bed A, recessed at a and vertically and laterally movable formers C 0, supported normally in said recesses, of trans- ITO In a-shaftvbending;1naehine,-thecombi- .natiolnwith ithe formers O G,-,-plat es,l, bar L,

. 6 and a :leverorbolt engaging theiba zfor shifting the platesiand formers, laterally, of, a. slid -,ingibar providedwith; a; =proj ect-ion engaging tanti l yasspe i edm the: lever or: bolt; substantially as herein set Htorth.

T 26.: In. a. shathbending;machine, the combiwnation; with the -.seoond -be11di vfO D C a pl'ates. Z, :bari I and a sliding bar.- having a .a chamber .072 provided with. a :lu g m a, loose zofibfOllhbfll mtiin .saidkchamber adapted,for en,- gagenrenti byxthe. projection N, and. a spring,

as Mfi, normallyiretraoting "the lever-bolgsubtstantially as: herein-set forth.

3 27.: .In a shaftvbending n aohine, the combi- 2 i nation, with th e first-bend formers l3, spreader; -b-arsk Hand? bending bars or plates-Eleonnected thereto and adapted to press the shafts :toztheiformeratof, a;sl iding ,-bar provided with a Wedgeacting- .on'the bars E' and having 0 laterally-adjustable front= and .sidewalls or .=.aeti-'ng-faces, substan tiallyas herein set forth,

2283 In a shaft-bendingmachine, the combination-,witlrthe point-formers (Llev ers O, and vbending-ibarsaorplates Ggot a sliding bar pro- 3 5 v-idednwith a wedgemcting on thelevers and a;:havingalaterallyadjustable side walls ori act iing-faces,substantiallyas herein setforth. @1295 .1111 ash-aft-bendingmachine, the-conibirinationg. with the formers 0, ben dipg barsj. G,

- 4o spreader-plates and dear 'Z L, alever-boltfrlvl,

and levers O, hingedzto lift atftheir inner z.:.parts, of a slidingbar provided with a wedge '31; In a shaft-bending machine5the ,conibi-.

a'..]12ttiOn,;With .the sliding wedge-bar which actu- 1 ates the shaftvbending devices, of a weighted i-lever or armacting on the wedge bar to, return it to normal operative position,substantially-asherein set forth anddesc'ribed. 32 .-In a shaftrbending machine, the combi- .1nationpviththeslidingwedge-bar which actuates the shaft-bending devices,-a sliding block 6, connected to the bending-bars for ,clamping the .shaftsqendwise, and a weighted leveractingon-ithewedge-barito return it to normal operative posit-ion,of aratchet .on the le- :ver, a pawl engaging said ratchet, a cam next 6 5 the pawl, and connections, substantially as described, fromsthe'camvto the block 6 for disengaging the. pawl as the shafts arev unclainped, substantially. as herein. set forth.

33. In a shaftbending I}1&Qh,ll1e, ,the first and. second bend formers provided, respect- :ively, ,at ;their.,inner. ,and outer faoeswith notches receiving fingersof the. sha t -fil l p, substantially asherein set forth.

3451 In, a shaft-bendingmachine, the combination, with the formers, "s,preader-b ars, and

bending bars and levers, and a; sliding bar operating thespreaderandz ibfinding bars and leve o p e th shaf stq he-f rm r nackon the wedge- 103132. 11: shaftlt, carrying, a .pin ionr, engaging said rack and also carrying loose, gear-wheels R a d a p i a r i hlt h adap to. .said gear-wheels, substantially, as}, herein settort-h.

.3 n: i-sha bendie i ieellinerl co nation, with ,the; fior ners, spreader-bars, and bendin g bars. and ,levers, and, a; sliding bar operating the ,spreader and bending bars. and

levers to press the shaftfto thef forrners, ,sub-

inglbar, ay-shatt, R, carrying. a pinion ,engaging. said rack, and, also, carryin'g loose gear-wheels R R and a spring-pressedclutch r, vnormally engaging th e, wheelYRi a shaft 3, .con-

.nectipg'thepulleys i ra d t 15', respectively,

and shippers for the clutch r1 andffontightening the belts S gi substantially as herein 1 set forth.

y 36. ,In ashaft-bending n achiha the combination, with the;formers, spreadepbars, and

bending bars and levers, and a sliding bar ,operating the spreader iand bendingbars and levers to press theshafts. to the formers,

substantially as.-,.spe citied, of. a .rack non' the sliding bar, a shaftrR, ,carrying a pinion r, engaging the rack and, also carrying loosegear wheels R1 Riand aspring-pressed clutch r, normally engaging the ,wlieel R a :shaftcarrying a ,pinioni? and pulley 15., a pin- .ion 25, engaging thepinion t andgear- Wheel R, a shaft, carrying a pinion tflehgaging the gear-wheel R3, and also carryingafpulleyt, a

driving-shaft l,,,carrying.pulleys 25 253,.10ose belts S S connecting the pulleys t tand t the bar. near the endsot its rack, substantially as-desoribed, whereby as the pinion ,runs outof therack at eitherendandthe motion of the pinion is reversed the springs will automatically mesh the rack and pinion, as and for the purposes set forth.

38. In a shaft-bending machine, the combination, with the machine bed and frame, of a flexible device bending the heel of the shafts, a movable former clamping the shafts to said device, a segmental rack engaging the free end of said device, a shafton the frame carryin g a pinion engaging the segmental rack, a rock-shaft on the frame carrying two arms, one engaging the lifting-lever of the heelformer, and an arm on the rack-driving shaft engaging the other of the two rock-shaft arms, substantially as described, whereby the heelformer will be unclamped automatically from the bent shafts as the heel-bending device is retracted from them, substantially as herein set forth.

39. In ashaft-bending machine, the combi nation, with the machine bed and frame, of

vided with two arms, one engaging the lifting-lever of the heel-former, and an arm on the rack-driving shaft engaging the other of 'the two rock-shaft arms and arranged relatively with it to yield laterally, substantially as described, whereby as the segmental rack is being raised to make the heel-bend of the shafts the driving-shaft and rock-shaft arms will pass each other, and as the driving-shaft is rotated in the other direction to lower the segmental rack the rock-shaft arm will be positivelyengaged by the driving-shaft arm to automatically lift or unclamp the heelformer from the shafts, as herein set forth.

40. In a shaft-bendingmachine, the combination of the frame, a segmental rack V, fulorumed thereon, a shaft V, having a pinion o, engaging said rack, a heel-former D, an adj usting-lever U for the former, a rockshaft if, an arm a thereon engaging the lever "U, a laterally-yielding arm a on the shaft V,

and an arm u on the shaft 10 made wedgeshaped in cross-section, substantially as described, for the purposes set forth.

41. In a shaft-bending machine, the combination, with the heel-former and the shaftV, and a rock-lever having two arms, one attached to the heel-former lever, of anarm U on the shaft V, made with a hub or casing u a laterally-yielding arm a pi voted thereto and adapted to engage the other of the two rock-lever arms, and a spring 10 pressing the arm a to one side of its chamber in the casing to substantially as herein set forth.

42. In ashaft-bending machine, the combination, with a segmental rack operating the shaft-heel-bending device, of a crank-arm on the segment-shaft, a pulley driving the gearing actuating said segment, a lever, a shaft carrying a cam or eccentric sustaining one end of said lever, a crank-arm on the camshaft, a friction-wheel supported by or from said lever and adapted to the driving-pulley of the segmental rack, and rod-connections from the cam-shaft crank-arm to the segmentshaft cranlearm, substantially as described, whereby as the segmental rack is raised to give the heel-bend to'the shafts the'lever friction-wheel will be moved toward the rackdriving pulley and as the rack is lowered the friction-wheel will be moved from the rack-driving pulley, as and for the purposes set forth.

43. In a shaft-bending machine, the combination, with a segmental rack operating the shaft-heel-bending devices, of a crank-arm on the segment-shaft, a pulley driving the gearing actuating said segment, a lever, a shaft oarryinga cam or eccentric sustaining the free end of the lever, a crank-arm on the cam-shaft, rod-connections from the cam shaft crank-arm to the segment-shaft crankarm for raising the lever as the segment is raised, and vice versa, a second lever fulcrumed to the first-named lever, a cam journaled to the second lever and bearing on the first lever, and a friction-wheel at the free end of the second lever adapted to the driving-pulley of the segmental rack, substan-. tially as described, whereby as said rack is raised both levers will be raised to move the second lever friction-wheel part way to the rack-driving pulley and said wheel will be pressed to the pulley by subsequent operation of the second lever-cam on the first lever, and both levers, with the friction-wheel, will be carried from the rack-driving pulley automatically as the rack is lowered or retracted, as and for the purposes herein set forth.

41. In a shaft-bending machine, the combination, with the machine bed and frame, of a flexible device bending the heel of the shafts, a segmental rack V, connected to said flexible device for operating it, a crank-arm 10 on the segment-shaft, a lever IV, fulcrumed at 10 to the machine-frame, a shaft 10 on the frame, and cam V on the shaft 10 and under the free end of the lever WV, a lever \V, fulorumed at 10 to the lever W, a friction-wheel V on the lever 7', adapted to the driving-pulley of the segmental rack, a

cam V journaled to the lever IV and bearing 011 the lever IV, a pulley w on the shaft of wheel a pulley 73 011 a main drivingshaft, and a loose belt T connecting the pulleys 15 20, all arranged for operation substantially as described, for the purposes set forth.

455. In a shaft-bending machine, the combination, with the machine bed and frame, bend-formers, and devices clamping the shafts to said formers, a shaft, a lever thereon, tappet-arms on the shaft, and connections from said arms to the shaft-bending bars, formers, and levers for unclamping the bent shafts from the formers, of a driving-pulley actuating the heel-bend-forming device, a lever carrying a friction-pulley adapted to said driv-

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