US620010A - Counter-skiving machine - Google Patents

Description

No. 620,0I0. Patented Feb. 2|, |899. W. J. YOUNG.

COUNTER SKIVING MACHINE.

(Appicacion med Jan. 26, 1898.1,

5 Sheets-Sheet L (No Model.)

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No. 620,010. Patented Feb. 2|, |000. w. J. vouNG.

COUNTER .SKIVING MACHINE.

Application tiled Jan. 26. 1898. i (No Model.) 5 Sheets-Sheet 2,

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No.- 620,0|0. Patented Feb. 2l. |899. W. J. YUUNG.

COUNTER SKIVING MACHINE.

Applicalun filed Jan. 26, 1898.,A

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No. 620,0I0. Patenied Feb. 2l, |899. W. J. YOUNG.

couNTER sKlvlNG MACHINE.

(Application filed Jan. 2B, 1898.

(No Model.) 5 Sheets-Sheet 4.

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No. 620,0!0. PatentedLF-eb. 2|, |899. W. J. YOUNG.

COUNTER SKIVING MACHINE.

"Application led Jan. 26, 189B..

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UNirnD STATES PATENT @ruina WILLIAM J. YOUNG, oF LYNN, MASSACHUSETTS.

COUNTER-rSKIVlNG MACHINE.

SPECIFICATION forming part of Letters Patent No. 620,010, dated. February 21, 1899.

Application filed January 26, 1898. Serial No. 668,071. (N0 model.)

To all whom t may con/cern:

Be it known that I, WILLIAM J. YOUNG, a citizen of the United States, residing at Lynn, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Counter-Skiving Machines; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and'use the same.

The present invention relates to skivingmachines, and more particularly to a skivingmachine for skiving off or beveling boot and shoe counters.

The object of the present invention is to produce a counterskiving machine which shall be simple in construction and quick and ing mechanism that there shall be no danger of cutting or injuring the hands of the operator.

To the above end the present invention consists of the devices and combinations of devices which will be hereinafter described and claimed.

The present invention is illustrated in the accompanying drawings, in which- Figure 1 illustrates a front elevation of a machine embodying the same. Fig. 2 illustrates a side elevation of the machine looking from the left of Fig. l.. Fig. 3 illustrates a top plan view of the front portion of the machine. Fig. 4 illustrates a top plan view of the rear portion of the machine, parts being broken out to show underlying parts. Fig. 5 is a fragmentary view of a portion of the machine, parts being shown in front elevation and other parts being in section.

Similar letters of reference designate corresponding parts throughout the several views of the drawings.

Before proceeding to a detailed description of the present invention it may be stated that the machine, generally speaking, has a worksupporting table and a knife-block carrier, which have relative movements toward and from each other to place the material on the work-su pport in position to be acted upon by in order to skive and bevel oif the projecting edge of the material, and while in the machine of the drawings, which will be herein- -after described in detail, the relative move- `ments of the work-support and knife-carrier ltoward and from each other are produced by a movement of the work-support toward and longitudinal reciprocation of the knife-block carrier with relation to the Work-support, the

present invention is not limited thereto, as the relative movements described may be produced by moving the knife-carrier toward lthe Work-support and the Work-support be moved longitudinally with relation to the knife-carrier. eflicient in action and to so arrange the skiv- In the drawings, A represents a suitable supporting-frame, which may be of any convenient form and arrangement, to support the working parts of the machine, said frame in the machine of the drawings comprising a base ings ds and o4, in which is mounted to rotate a shaft B, said shaft being provided with a driving-pulley b, arranged to be driven by a belt from any suitable source of power, the pulley b being loose on said shaft and having a beveled inner face h', which is arranged to engage the beveled face b2 of a clutch-pulley h3, iXed to rotate with said shaft, the pulley b being arranged to have a slight movement along the shaft B, whereby the beveled faces b and h2 of the pulleys b and b3 are brought into contact and motion imparted to the shaft B from the constantly-running pulley h, and when the beveled faces are disengaged the shaft B will be at rest. Mounted in suitable bearings a5, formed in a standard a6 upon the upper surface of the base a and extending parallel to the shaft B, is a shaft B', said shaft B being driven from the shaft B by means of a pinion b4, xedly secured to shaftB and gearing with a gear Zr", fixedly secured to the shaft B.

The front of the standard a is formed with projecting portions or ribs a7 and as, which are cut out or rabbeted, as at a9, said rabbets of in connection with a plate d10, secured to IOO the projecting portion a7 by bolts ce, and a plate cl2, secured to the projecting portion as, forming a guideway for the reciprocating knife-block carriage C, which, as will be hereinafter described, is arranged to have a reciprocation along said guideway.

The carriage C comprises a rectangular* plate, the upper and lower edges of which fit into the guideways in the front of the standard d', and in the machine of the drawings, said carriage is arranged to be reciprocated along said guideways by a link c, which is pivoted at c to the back of said carriage, and which, at its opposite end, is pivoted at c2 t0 a crank-pin c3, carried bya disk c4, afiixed to the shaft B.

The above arrangement is such that a rotation of the main shaft B will rotate the shaft B', and, through the link c, impart the reciprocating movement to the carriage C.

Upon the front face of the carriage C is mounted a knife-block D, said knife-block having secured to its under face suitable skiving-knives d, and in order that said skiving-knives d may have their cutting edges presented at the proper cutting-angle to the stock to be skived, which will be upon the work-support, said knife-block in the machine of the drawings is fulcrumed to oscillate upon the carriage C to lower one knife and raise the other automatically, according to the direction of travel of said carriage, and in the present invention the oscillation of the knife-block is arranged to be automatically performed by the following mechanism.

The knife-block D comprises a plate or casting which has a vertical or upright portion d' and a horizontal portion d2, the vertical portion d being fulcrumed at d3 to the carriage C and the horizontal port-ion carrying the skiving-knives d, said knives d being secured in position on the under face of the horizontal portion d2 of the knifeblock D, with their cutting edges d4 arranged outwardly or at opposite ends of the knife-block, as clearly shown in Fig. 5 of the drawings.

In the machine of the drawings when the carriage C is moving in the direction of the arrow shown in Fig. 5 of the drawings the knifeblock D will be in the position shown in said ligure, with the right-hand end depressed to bring the skiving-knife at that end in a proper angular' position to engage and skive the stock upon the work-support, and just as it completes its stroke in the direction indicated the knife-block will be automatically oscillated and the opposite end depressed to bring the knife on the left in cutting position for action on the return stroke of the carriage C. Suitable latches or locking devices are provided to hold the knife-block in either of its positions during the action of the cutters, and these latches are arranged to be automatically released as the carriage C reaches the lilnit of its stroke in either' direction.

The automatic oscillating and locking mechanism of the knife-block D in the machine of the drawings comprises suitable plungers or rods d5, which are mounted to slide in suitable bearings d", carried by the plate am, said rods having heads or enlargements (Z7 upon their outer ends in order to limit their movement in one direction or toward each other. Said rods (Z5 are surrounded by suitable coiled springs ds, which bear at one end against the inner surface of the end bearings d and at the other end against a shoulder d, formed upon said rods, whereby the rods will be normally pressed toward each other or toward the medial line of the machine.

Upon the upper edge of the knife-block D is a projection dx, which is arranged to come into contact with the inner ends of the rods di upon the reciprocation of the carriage C and move said rods in their bearings against the tension of the springs, it being understood that the projection dx will engage the rod toward which it may be moving. After the projection d has engaged the end of the rod d5 toward which it may be moving the further movement of the carriage C and knife-block D will cause the rod to move backwardly in its bearings and the spring to be compressed, and just before the carriage C reaches the limit of its stroke the rod d5 then in contact with the projection d will be exerting considerable pressure upon said projection, such pressure being sufficient upon the unlocking or releasing of the knife-block D to swing said knife-block upon its fulcru in df3 to depress its opposite end, in which position it will be locked for the return movement of the carriage C.

As shown in the drawings,the machine comprises spring-bolts which are arranged to automatically lock the knife-block as it is oscillated, and suitable means are provided for releasing the bolts as the carriage C reaches the limit of its stroke in either direction in order to permit the knife-block D to be oscillated and tilted for the return stroke.

The locking and releasing mechanism of the machine of the drawings comprises bolts E, which are arranged to have a sliding motion in suitable bearings e, formed in the knife-block D, suitable springs e' in said bearings acting upon the inner ends of said bolts to normally press them outwardly, and the outer ends of said bolts E are arranged to engage the curved faces e? of suitable blocks or keepers e3, carried by plates e4, secured by bolts e5 to the ends of the carriage C, said keepers e3 being provided below the curved faces e2 with notches e, wit-h which the bolts E are arranged to engage as the ends of the knife-block D are depressed. The keepers e3 are slotted, as shown at c7, and projecting into and through these slots are pins or pro jections es, formed on the ends of the bolts E, said pins e8 being arranged to be engaged by suitable stops orarms c, formed on upwardlyprojecting arms ew, carried by the plate ctw, said stops e" acting to force the pins e8 inwardly against the tension of the springs e' IOO lIO

to thus remove the bolts from the vnotches e6 to release the knife-block and permit the plunger (Z5 then in contact with the projection (ZX to swing the knife-block D on its fulcrum, raising one end and depressing the other end for the return movement of the carriage C. It will thus be seen that the knives d are alternately raised and lowered to he brought into operative engagement with the work, one knife cutting as the carriage C alternately position said cutters to make their y cuts from the medial portion`of the material toward the ends thereof, and while in the illustrated embodiment of my invention I attain this result by an oscillating knife-block,

I do not consider my invention as limited thereto, but intend to claim the same in the broadest legal sense.

As before stated, the knives are secured to the under side of the horizontal portion d2 of g the knife-block with their cutting edges d4 arranged at opposite ends, and in advance of the cutting edges d4 are arranged suitable pressers to engage the counter or other ma-l terial to be skived in advance of the cutting` edges to press said counter against the workg support and moving along with said cutters smooth out the material for theaction of said cutters, and in the oase of skiving counters where said counter is laid upon a die-facedA cutting bed into which said counter is pressed and the portion of the counter pro' jecting above the recess skived od the press-- ers act to force said counter into the recess of the bed as the knife advances to skive olf the projecting portion of the counter.

1f, secured by bolts 19'* t0 the Portion d2 0f the knife-block D. The lower ends of thev bell-crank levers f are rounded, as shown, to-

engage the work, and the upper ends of said levers rest against a cushion f5, said cushion comprising a block of rubber or other suitable material arranged to permit the independent yielding of the levers f, whereby they will be adapted to conform to the inequalities of the material being skived. The cushions f5 are arranged in recesses f6, formed in the brackets f3, secured to the knife-block D by bolts f4, and suitable adjustingscrews f7 are tapped into apertures inthe brackets arranged to bear upon the rear faces of saidi cushions for the purpose of adjusting the pressure of the same.

In order to adjust the position of the lower ends of the levers f with relation to the cutting edges of the knives d, bars f8 are adjustably held in contact with the inner faces of the upper ends of said levers, said bars f 8 being acted upon by suitable adj usting-screws fg, whereby the bars f8 may be moved back and forth with relation to the cushions f5 to raise and lower the lower end of the levers f.

The knives d in the present invention are held in position by an undercut rib g, formed along the back of the under side of the horizontal portion cl2 of the knife-block and by plates g', having undercut ribs g2, which are fastened to the front of the portion d2 of the knife-block by the bolts pi", the ribs g and g2 engaging the side edges of the knives d and holding them securely in position.

The work-support H in the machine of the drawings comprises a substantially rectangular table h, which is arranged for a vertical,

movement toward and from the knives d, said table having a removable die-plate h' upon its upper surface, in which is formed a recess or die h2, into which the counter to be skived is depressed, leaving portions of the edge projecting to be out off by the skivingknives d, said die-plate h' being cut away at its central portion, as shown at h3, for a purpose to be hereinafter described.

The table H is provided with a depending shank or stem h4, which is arranged to have a vertical reciprocation to elevate and lower the table H in a guide h5, formed in a projection h6 on the front of the base a, and said shank or stem h4 is retained in said guide h5 by a plate hl', secured to the front of said projection by screws hs.

The table H is raised by a cam 7L", which engages a cam-roll hm, mounted upon the rear face of the shank h4, said cam-roll being preferably mounted in an eccentric stud and which has a threaded portion around its periphery which is engaged by a screw h,

The pressers in the machine of the draW-, ings are shown at F and comprise a number of small bell-crank levers f, which are fulcrumed upon rods f2, said rods f2 being supported by the vertical portion d and by a plate 2 whereby said stud may be turned to adjust the vertical throw of the table or work-support H. The cam h9 is carried by a rock-shaft K, which is mounted in suitable bearings in the base ct and in a bearing 7c in a short standard 7c', said shaft carrying a belt-pulley which is connected by a belt k3 with a pulley 104 on the shaft B.

The shaft K is a rock-shaft arranged to be turned sufficiently to cause the cam to raise thev table or work-support I-I and to be turned in the opposite direction to reverse the cam and permit the shank and table H to fall by gravity by means of a spring 7t5,which is connected at its upper end to a ixed bar k6 and at its lower end to a lug k7, carried by a collar 708, iixedly secured to the shaft K. The clamp for clamping the counter in position 'upon the die-plate h of the work-support H is arranged to automatically clamp the IOO IIO

counter upon the elevation of the work-support and to release said counter upon the depression of said Work-support.

The clamp in the machine of the drawings comprises a yoke M, arranged, as shown, to

cross the bed or work-support H, the legs m` of the yoke passing through bearings m' on? a xed portion of the machine and surrounded below said bearings with coiled springs m2,

said springs m2 being confined between the lower ends of said bearings and suitable heads m3, formed on the legs m, the cross-ban m4 of the yoke M being arranged to draw the central portion of the counter' down into the cut-out portion 7b3 of the die-plate 7L and against a stationary clamping-plate m5, secured in a groove m6 in the bed or table H, the upper surface of said clamping-plate and the under surface of the cross-bar m4 being roughened or serrated in order to frictionally grip the counter. The above arrangement is such that as the table or work-support H rises the counter will come in contact with the cross-bar m4 of the clamp M just before the table has reached the limit of its upward movement, and in the further upward movement of said work-support the clamp will draw the central portion of the counter down into the recess 72.3 in contact with the plate m5, the springs m2 yielding in the further upward movement of the work-support, thus yieldingly but firmly clamping the counter in position to be acted upon by the knives c7, and upon the lowering of the table or work-support H the counter will be automatically released, as will be clearly apparent from an inspection of the drawings.

In the present invention the mechanism` which actuates the knife-carriage and the mechanism which acts to raise the work-support are controlled by suitable clutches and connecting mechanism, so arranged that al downward depression of a foot-treadle (not shown) will cause the rock-shaft K to be; turned to raise the work-support H and hold' said support raised, with the material to be skived clamped thereon in position to be acted upon by the skiving-kuives, and to thereafter rotate shaft B to impart motion to shaft B;

to cause a reciprocation of the knife-carriage C and to automatically stop after one excur-A sion of the knife-carriage, leaving said car-` riage in its starting position and the work-sup- In the machine of the draw` ings this mechanism is so arranged that mo` port lowered.

ley b. The pulley 71;2 is arranged to be locked to the shaft K by a suitable clutch mechanism comprising a friction-surface carried by an element xed on said shaft and a frictionsurface carried by a part movable along the shaft K toward and from the fixed element.

As shown, the fixed friction-surface may be formed on a pulley p, which is secured to the shaft K, and the movable friction-surface may be formed on the pulley 71:2, said pulley being moved toward and away from the pulley p by a fork p', which takes into a groove 292, carried by a hub p3, formed on the pulley 7a2. The fork p is formed on one arm of a bell-crank lever p4, which is fulcrumed at p5 to the frame a, and the opposite end of said bell-crank lever is connected, by means of a link or rod p6, to a foot-treadle. (Not shown.) Upon shaft K is fixed a collar p7, from one face of which projects a pin p8, which is arranged to engage the hooked end p" of a rod p10 when the shaft K is rocked, which rod controls the clutch mechanism which connects the pulley b and shaft B, as will now be de-I scribed.

The pulley b is moved toward and from the pulley b3 by a lever t, which is fulcrumed at t to the standard a2 and which at the upper end is provided with a collar 2, which engages a groove t3, formed in a hub t4 of the pulley 7a4, which is fixed to the pulley b, and said pulleys are moved in one direction to bring the clutch-faces b and b2 into frictional engagement by means of a spring 5, which at one end is connected to the lower end of the lever t and at the other end to the standard a, preferably by means of an adj usting-bolt t6.

The lever t is moved against the tension of spring t5 to move pulley b away from pulley b3, to disconnect the clutch-faces b and b2 by the following mechanism:

A link u is pivotally connected at u to the lower end of the lever t, and at its opposite end said link is pivotally connected at u2 to a link a3, said link being pivoted at u4 to the top of base a. A lateral movement of the link a3 about its pivot tu* toward the left in Fig. 4 will exert a forward pull upon the link u, thus moving the lever t against the tension of spring t5 to disconnect the clutch-faces b and b2, and a lateral movement of the link us in the opposite direction or toward the right will permit the link t to be drawn back by the spring t5, thus moving the pulley b toward the pulley b3 to bring the clutch-faces b and b2 in contact, as will be clear from an inspection of Figs. 2 and 4. Thelateral movement of the link a3 is imparted by the shaft w, which shaft ismounted to have a longitudinal sliding movement and a rocking movement in the bearings w', and said shaft w has a fixed grooved collar wz, (see dotted lines, Fig. 4,) which collar engages a roller "a5, mounted upon the pivot u2 of the links uand us. The shaft w is moved longitudinally in one direction by a spring w3, which is coiled upon said shaft, one end of such sprmgbear- IOO ing against the bearing 10 at the left of the machine, as shown in Fig. 4, and the other end of said spring bearing against the grooved collar 102. The shaft10 is moved in the opposite direction against the tension of spring103 by a lug 104, which is fixed to the rear face of the gear b5 and which is arranged to engage a lug 105, carried by a collar 1011, fixed to the left-hand end of the shaft 10. Vhen the lug 104 engages the lug 105 and moves the shaft 10 laterally to the left, as shown in Fig. 4, it causes said shaft, by means of the grooved collar 102, to swing the forward end of the link 113 to the left, thus pulling forward upon the link 11, and disconnects the clutch-faces b and b2, thus stopping the rotation of shaft B and the movements of the knife-carriage 0,. and said parts will remain at rest so long as the lug 105 is held by the lug 104.. A rocking of the shaft 10 in its bearings will move the lug 105 away from the rear face of the gear b5 and disengage the same from the lug 104, thus permitting the spring 103 to move the shaft to the right, which swings the end of l-ink 112 to the right and permits the spring t5 to draw back the lower end of the lever t and throw1 the clutch-faces b and b2 into contact to start the rotation of the shaft B and the movement of the knife-carriage C. It is designed that as soon as the shaft 10 has been rocked to remove the lug 105 from engagement with the lug 104 and moved to the right by the spring 102, as described, to start the shaft B said shaft 10 will be instantly returned to its former position in order to place the lug 105 in position to be engaged by the lug 104 as said lug 104 comes around to the stopping position to stop the rotation of shaft B.

To secure the above-suggested result and also to provide for a'stopping of the reciprocation of the knife-block carriage C independently of the backward rocking of the shaft K and the lowering of the work-support II, the connection between the link p10 and the shaft 10 is a loose connection arranged to be automatically disconnected when the shaft 10 is moved laterally by the spring 103 and connected when the shaft 10 is pulled laterally bythe lug 104. This connection comprises a collar 107, which is loosely mounted upon the shaft 10 and through which the shaft is free to move. The collar 107 has a projecting arm 108, to the outer end of which the rod p10 is pivotally secured, and said collar is arranged to be rocked in one direction by a downward pull on said rod and to be returned by a spring 102, which is connected at one end to said collar and at theopposite end to a fixed portion of the frame. Fixed to the outer or right-hand end of the shaft 10 is a head 1010, in which is formed a suitable bearing 1011, receiving a stud or pin 1012, which is arranged to have a free sliding movement therein and which is normally projected, as shown in Fig. 4 of the drawings, by means of a spring 1012, which is located in thebearing 1011 and which acts upon the inner end of said stud. The

stud 1012 is arranged to engage an aperture 1014, formed in a lug 1015, projecting from the collar 107,when the shaft 10 is moved laterally toward the left in Fig. 4, so that the collar 107 will be locked to the shaft 10 to rock said shaft when the rod p10 is drawn down to remove thelug 105 from contact with the lug 104. A movement of the shaft 10 to the right under the action of the spring 103 will remove the stud 1012 from the aperture 1014, thus disconnecting the shaft 10 from the collar 101', when said shaft will immediately be returned to the position shown in Fig. 4 by a spring 1016, which at one end is connected to the collar 102 on said shaft and at its other end to a fixed part of the frame. By the above arrangement the shaft 10 may be returned to the position shown in Fig. 4 to place its lug 105 in position to be engaged by the lug104 before the rod p10 is released by the rocking of the shaft K, so that work-support may be held in its raised position until the knifeblock carriage has made a complete reciprocation.

When the shaft 10 is moved to the left by the lug 104 engaging the lug 105, the inner face of the head 1010 will be brought close to the outer face of the collar 101, the stud 1012 being forced into its bearing against the tension of the spring 1012, and as the collar 107 is rotated backward by the release of the rod p10 as the shaft K is rocked to lower the worksupport the stud 1012 will be forced into the aperture 1014 as said aperture comes opposite the said stud, whereby the shaft 10 and the collar 107 will be locked together and said shaft will be rocked upon a downward pull of the rod p1.

In order to properly position the counter to be skived upon the work-support H, I have provided suitable guides or gages arranged to contact with the edge of the counter and have arranged such guides or gages in such manner that when the work-support H is lowered the guides or gages will project above the upper surface of the work-support and when said work-support is raised said guides or gages will be below the surface of the worksupport, so as to be out of the way of the reciprocating skiving-knives. The guides or gages in the machine of the drawings comprise suitable vertically `extending pins or rods x, which rods at their lower ends are adj ustably connected to suitable brackets or arms fixed to the base a, said rods 0c passing through bearings m2 in the work-support H. The rods are adjusted to bring their upper ends in such a position that when the work-support H is lowered said rods will project above the surface thereof, as clearly shown in Fig. l; but when said work-support is raised to bring the counter thereon in position to be acted upon by the skiving-knives the ends of said rods will fall below the surface of the work-support and be out of the way of the reciprocating knives.

In the operation of the machine of the draw- IOO IIO

ings the counter is placed upon the upper surface of the work-support and properly positioned by means of the rodsm. The depression of the treadle (not shown) causes the rod p to actuatc the bell-crank lever p1, causing lthe fork p to move the pulley 7a2 toward the disk p, thuslocking the pulley k2 to the shaft K and rocking the shaft K to cause the cam 7L to raise the work-support toward the reciprocating knife-carriage, the vertical movement of the work-support causing the clamp M to clamp the central portion of the counter and hold it ixedly in position on the worksupport, as hereinafter described. The rocking of the shaft K has caused the pin p8 to engage the hooked end of the rod p10, drawing down said rod and through the collar 107 rocking the shaft 10 to remove the lug 105 from contact with the lug 104, thus permitting the spring 103 to move the shaft 10 to the right and disconnecting said shaft from the collar 107and causing the collar 102 on said shaft to move link 103 laterally to the right, as shown in Fig. 1, and permitting spring t5 to rock the lever t to move the pulley Z) toward the pulley b3 to bring the clutch-faces b and b2 in contact to impart a rotary motion to shaft B. The rotation of shaft B will, by means of the gear b1 and b5, impart a rotation to shaft B and through the link c reciprocate the knifeblock carriage C, as before explained. The knife-block Din Fig. lis shown in a horizontal position, being a position of inactivity intermediate between the extreme oscillations of said knife-blockD. In Fig. 5, however, the knife-block D is shown in position in which it Works on a lateral reciprocation toward the right. In this position the knife CZ at the righthand end of the knife-block D as said knifeblock is moved toward the right will engage the portions of the counter projecting above the die-plate 7L and skive off and remove said portions. As the knife-block carriage C reaches the limit of its stroke toward the right the lug or projection (ZX on the knife-blockD engages the spring-plunger d5, and upon its continued movement toward the right moves said plunger, thus compressing its spring, and as the finger es of the bolt E comes in contact with the arm e9 said bolt will be forced back against the tension of the spring e and its end removed from the notch e6,thus permitting the plunger d5 to oscillate or rock the knife-block D 011 its pivot, raising the right-hand end of said knife-block and loweringthe left-hand end, the bolt on the lowered end locking said knife-block for its return stroke, and as said knife-block returns the knife d on the lefthand end of the knife-block will skive olf the projecting portions at the left-hand end of the counter, and as the knife-block carriage C reaches the limit of its stroke to the left the bolt E on the left will be released in a manner before described, permitting the plunger at the left-hand end of the machine to oscillate the knife-block and set it in position (shown in Fig. 5) for another cycle of operation. As soon as the shaft 10 was released from the collar 107 the spring 101G returned said shaft to the position shown in Fig. 4, placing the lug 105 on said shaft in position to be engaged by the lug 101 on the gear b5, and as the lug 101 engages the lug 105 the rotation of the gear h5 will cause the shaft 10 to be moved laterally to the left against the tension of the spring 103, thus moving the link 103 to the left, and by means of the connecting-rod 1t draw forward the lower end of the lever t, causing said lever to move back the pulley b along the shaft B, disconnecting the clutch-faces b h2, and stopping the rotation of shafts B and B and the reciprocations of the carriage C, whereupon the operator removes his foot from the treadle, thus disconnecting the pulley k2 from the shaft K and permitting the spring 705 to rock said shaft backwardly to lower the work-support and also permitting the spring 109 to turn the collar 107 in position to bring the aperture 1014 in line with the stud 1012, whereupon the stud 1012 will engage the aperture 1011 and lock shaft 10 to the collar 107, to be again actuated, as hereinbefore described.

Having fully described the construction and mode of operation of my invention, I claim as new and desire to protect by Letters Patent of the United States- 1. In a skiviug-machine, the combination With a reciprocating carrier and knives thereon arranged for alternate independent operation, of means controlled by the reciprocations of the carrier to alternately move said knives into and out of operative position during each reciprocation of said carrier to skive opposite ends of the material from the medial portion thereof toward each end, substantially as described.

2. In a skiving-machine, the combination with a reciprocating carrier, of an oscillating knife-block mounted thereon, knives mounted on the knife-block at each end thereof, and means to oscillate said knife-block upon the reeiprocation of the carrier to alternately place the knives in position to skive opposite ends of the material from the medial portion thereof toward each end, substantially as described.

3. In a skivng-machine, the combination with a reciprocating carrier, of knives thereon arranged for independent operation to skive opposite ends of the material from the medial portion thereof toward each end, means controlled by the reciprocations of said carrier to alternately move one knife into operative position and to move the other knife out of operative position, and locking devices to lock said knives in and out of operative position, substantially as described.

4. In a skiVing-machine, the combination with a reciprocating carrier, of an oscillating knife-block mounted thereon carrying a knife at each end thereof, means controlled by the reciprocations of said carrier to oscillate said knife-block to alternately place the knives in position to skive opposite ends of the mate- IOO IIO

rial from the medial portion thereof toward each end, and locking devices arranged to hold said knife-block in its different positions, substantially as described.

5. In a skiving-machine, the combination with a reciprocating carrier, of an oscillating knife-block mounted thereon, knives at opposite ends of said knife-block, means to oscillate said knife-block to raise one knife and lower the other as said carrier is reciprocated to place said knives alternately in position to skive opposite ends of the material from the medial portion thereof toward each end, and locking devices also controlled by the reciprocations of said carrier to release the knifeblock as the carrier reaches the end of its stroke in either direction to permit the oscillation of said knife-block, substantially as described.

6. In a skiving-machine, the combination with a horizontally-reciprocating carrier, carrying a suitable skiving-knife, of a work-support arranged to support the material to be skived, means to impart relative movements to the carrier and work-support to place the work in position to be acted upon by the knife, and means controlled by such relative movements of the knife-carrier and Work-support to impart relative reciprocations to the carrier and work-support to cause the knife to operate upon the material, substantially as described.

'7. In a skiving-machine, the combination with a reciprocating carrier, of an oscillating knife-block mounted thereon, and knives mounted on said knife-block for independent altern ate action, means to oscillate said knifeblock to raise one end and lower the other as said carrier is reciprocated to alternately place said knives into position to skive opposite ends of the material from the medial portion toward each end, said means being normally inactive and brought into action by the movement of the carrier, substantially as described.

8. In a skiving-machine, the combination with a movable work-support, of a yoke-shape work-clamp arranged to engage and clamp the medial portion of the material upon the upward movement of the work-support, and

to release said material upon the downward movement of the work-support, substantially as described.

9. In a skiving-machine, the combination with a reciprocating carrier carrying a skiving-knife, of a work-support movable toward and from the plane of reciprocation of the carrier, and connected mechanisms timed and arranged to cause a reciprocation of the carrier after the work-support has brought the work into position to be acted upon by the knife, and to lower the work-support after such reciprocation of the carrier, substantially as described.

10. In a skiving-machine, the combination with a reciprocating knife-carrier, of aworksupport movable toward and from the knifecarrier, a cam-shaft to raise the work-support, a shaft and connecting devices to actuate the knife-carrier and suitable clutches and controlling devices to cause the knife-carrier-actuating shaft to be set in rotation by the rocking of the cam-shaft to raise the work-support, substantially as described.

l1. In a counter-skiving machine, the combination with a work-support, of skivingknives arranged to skive a counter placed on said work-support, and means to actuate said skiving-knives to cause said knives to alternately make skiving cuts from the medial portion of the counter toward each end thereof, substantially as described.

12. In a skiving-machine, the combination with a work-support, of a skiving-knife, means to move the work-support toward and from the skiving-knife and a suitable workgage mounted on a fixed support and arranged to position the work upon the worksupport, said gage arranged to be projected above the face of the work-support as said work-support moves away from the skivingknife, and to be retracted below the worksupport as` said work-support moves toward the skiving-knife, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses. 4

WILLIAM J. YOUNG.

Witnesses:

A. E. WHYTE, T. HART ANDERSON.

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