US1295965A - Work-support for shoe-machines. - Google Patents

Description

L. M. BROWN & A. A. MACLEOD.

WORK SUPPORT FOR SHOE MACHINES. APPLICATION FELED JULY 15. m5.

1,295,965 Patented Mar. 4, 1919.

2 SHEETS-SHEET I.

L M. snow: & A. A. MACLEOD.

WORK SUPPORT FOR SHOE MACHINES.

APPLlCATiON HLED JULY 15. 1915.

Patented Mar. 4,1919;

2 SHEETS-SHEET 2.

LOUIs M. BRown, or BEVERLY, AND ALB CHUSETTS, ASSIGNOBS, BY MESNE AS CORPORATION, OF PATTERSON, NEW JE rnnr onn WORK-$UPPORT FOR SHOE-MACHINES.

Application filed July 15, 1915.

To all whom it may concern.

Be it known that we, LOUIS M. BROWN and ALBERT A. MAoLnoo, citizens of the United States, residing at Beverly and Swampscott, respectively, in the county of Essex and State of Massachusetts, have in vented certain Improvements in VVork-Supports for Shoe-Machines, of which the following description, in connection with the accompanying drawings, is a specification, like'reference characters on the drawings indicating like parts in the several figures.

This invention relates to work supports for shoe machines and is herein shown as embodied in work positioning means particularly adapted for use in machines which operate to trim the edge of an insole after the insole is attached to a last.

In the manufacture of some types of shoes, such as welt shoes, it is the usual practice. after the insole is attached to the bottom of the last. to trim the heel portion of the insole to the edge contour of the heel seat of the last. A machine for this purpose forms the subject-matter of United States Patent No 1,076,431, granted October 21 1913, on the application of E. L. Keyes. The insole is attached to the last usually by means of a plurality of tacks driven along the middle of the forepart and shank and by a single tack at the heel seat driven into the last through a hole in the metal anvil plate with which the heel 'endof a last is usually provided. The tacks along the forepart and shank may be driven at random, but the heel seat tack must enter the comparatively small hole in the anvil plate. As a result the material of the last where the heel seat tack is driven is worn away with comparative rapidity so that finally a tack driven at this point fails tohold the heel portion of the insole securely. There are in. use, moreover, in the manufacture of some classes of shoes, lasts in which no hole is provided in the metal anvil plate for the reception of a tack and in which it is not desirable to provide such a hole lest the strength of the plate be weakened unduly.

The machine shown in the patent above referred to includes a yielding presser member for engagingthe bottom face of the in sole close to the point of operation of the cutter to prevent the insole from being deflected by the cutter in such manner as to Specification of Letters Patent.

Patented Mar. 4t, 1919.,

Serial IQ 0. 40,016.

be trimmed unevenly. While this arrangement has proved satisfactory in operation under, the usual working conditions, it is not alway sufficiently effective where the insole is insecurely tacked at the heel seat or where there is no heel seat tack. This arises largelyfrom the fact that during the trimming operation there is rubbing engagement between the presser member and the insole Which tends to neutralize to some exgent the clamping effect of the presser mem An important object of this invention accordingly is to provide for use in a machine for trimming an insole attached to a last improved means for positioning the insole in relation to the last; and to this end a feature of the invention consists in a novel construction and arrangement of work positioning means including a member for engaging the bottom face of the insole to position the insole relatively to the last, this member being arranged for turning movement with the last during the trimming op eration and also for movement to an idle position at one side of the last. In the illustrated construction the clamp member is mounted for swinging movement into or out of a position over the last bottom.

A further feature of the invention consists in a work support for shoe machines including provision for bodily movement of a last and a device for engaging shoe stock upon the bottom of the last to position it relatively to the last, the device being arranged to be moved into or out of a position over the last bottom through a movement of the last. v

The above and other features of the invention, including certain details of construction and combinations of parts, will now be described with reference to the accompanying drawings which illustrate a preferred embodiment of the invention, and will be pointed out in the claims.

Although the invention is illustrated herein in its application to a machine for trimming an insole attached to a last. it will be understood that in its broader aspects the invention is not thus limited but is applicable in many of its features to use with different classes of shoe machines for performing various operations in shoe manufacture. I

ERT A. MAGLEOID, 0F SWAMPSCOTT, MASSA- SIGNMENTS, T0 UNITED SHOE MACHINERY RSEY, A CORPORATION OF NEW JERSEY.

In the drawings,

Figure l isan end view in elevation of an insole heel seat trimming machine similar to that shown in the patent hereinbefore referred'to, including'novel work positioning means in which the present invention is trated machine showing the manner in which the work is presented for-treatment;

Fig. 4 is a plan view, partly, in section, of the mechanism for controlling the clamping of the insole, showing the parts in a different position fronrthat illustrated in Fig. 2, and

Fig. 5 is a View partly in vertical section in'the plane of Fig. 1, illustrating in detail a part of the connection between the upwardly extending arm of the work support and the work supporting head.

The machine illustrated in Figs. 1 and 3 comprises a frame 2'having bearings for a rotary shaft 4i which carries a toothed cutter 6 and the usual shield 8. Positioned at the end of the cutter is a guide member 10 constructed for engagement with the lateral surface of a last; as (4, adjacent to theedge of the heel seat to guide the last in its turning movement during the opera-- tion of trimming around the edge of the heel portion of the. insole I), this guide men her having a lip 12 to project between the bottom of the last and the insole for the purpose of positioning the last axially of the cutter and supporting the insole out of con tact with the last adjacent to the point of operation of the cutter, as well as preventing any possible engagement of the cutter with the last, all as more fully explained in the patent hereinbefore referred to. The guide member 10 is mounted adjustably in a support 14: which is pivoted to the frame 2 at 16 to permit the member to be swung awayv from the cutter when it is desired remove the cutter from its shaft. Mounted upon the shaft 4 also to rotate therewith is a presser member 18 which is movable lengthwise of the shaft and during the trim mingoperation is held by means of a light spring 20 against the insole adjacent to the pointof cut to. ass1st in preventing the insolo from bending away from the cutter. A collar 22 secured to the shaft by a screw 24 that projects through a slot 26 in a sleeve 28 extending from the member 18 serves as an abutment for the spring 20, and by engagement with the inturned end of the sleeve determines the idle position of the presser member 18 so as to permit the insole to forcethe member back'slightly in opposition to the spring- 2O when the insole is presented to the cutter.

V bu

Secured upon one side of the lower portion of the f 81116 2 is a bracket 30 provided with a horizontal arm 32 upon'which the Work support of the machine'is mounted. This arm is provided at its outer end with a bearing 33 for the reception of a stem 34: which projects from a block 86. The block 36 is thus permitted to turn Withreference to the arm 32 within limits determined by a stop 38 upon the arm with which the block is arranged to engage. Projecting from the block 36 at right angles to the stem 3% is a rod 4:0 which provides a bearing for the upwardly extending arm l2 of the work support, movement of this-arm about its bearing being limited by a projection $3 on the block 36 which enters an are shaped recess $5 in. the arm adjacent to the rod 40, seen in Fig. 2. Mounted upon the upper end of the arm42 is .a head 4A having a stem l6 which engages in a bore in an offset portion of the arm so that thehea'd may turn to a limited extent in a plane transverse to the arm. In order to limit such turning movement of the head 4A, the arm l2 is provided on opposite sides with screws 48 the ends of which enter a recess 50in the upper end of the arm in position to engage a stcn152 which depends fromthe head within the recess. Movement of the head in both directions about the aXis of the stem t6 thus limited adjustablv by the screws 48. The purpose of such turning movement of the head as will be hereinafter explained. I

Secured in a bore in the head 44 is. a slQGYe 54: through which extends a spindle 56 the forward end portion of'which is arranged to enter the last pin socket of a last,

as'sliown in Fig. 2. The sleeve 54; is ex-. tended at one side of the head to provide a bearing for a bracket 58 which is mounted thereon for rot-ation'about the axis of the spindle 56, the sleeve havin a flange 59. at its outer end to retain the liracket in position, as shown in dotted lines in 2. Secured to the spindle 56 at adistance from its forward end is a plate 60 whichis formed a; pair of last positioning members 64, these with grooves 62 to provide a slideiway for members being movable upon the slideway 5 toward or from the spindle56. The members 64 comprise a pairef jaws arranged for engagement with tlIGSldQS of the neck portion of a last to assist inmaintaining the last firmly in position upon its support. Pirated on one side of the plate 60 are =bell crank levers 6.6 in one arm of each of which is formed a slot for the reception ofa pin which projects from the corresponding jaw (i l, as shown in Fig. 2.- A spring. '70

is connected to the levers 66 in suehman= nor as to cause the jaws fie tobe separated as far as pernnttedbvpms' 72, the outer ends of which are seen in; F ig. 2, these pins the levers projecting at their inner ends in position to be engaged by the jaws 64 in their outward movement, as will be readily understood. The other arms of the levers 66 project inwardly in position to be engaged by the neck of a last when the last is mount- "ed upon the/Spindle. It will thus be seen that when a last is mounted upon the splndle and 1s moved to cause the spindle to approach the bottom of the last pin socket, 66 will be engaged by the last and swung about their pivots, thus causing the jaws 64 to slide inwardly and make firm contact with the sides of the neck portion of the last so as to prevent the last from tipping and assist in maintaining it in fixed relation to the spindle during the trimming operation.

From a consideration of the construction as thus far described it will be seen that after a last has been positioned upon the forward end portion of the spindle 56, endwise movement of the spindle, which carries the other portions of the last support including the plate 60 and the jaws 64. will serve to effect displacement of the last transversely of the plane of its heel seat portion, and during such movement the last is carried from or toward the bracket 58 which is restrained from similar movement by the head 44 and the flanged end 59 of the sleeve 54. Extend ing from the plate 60 are pins 74 which are arranged for sliding engagement in recesses in the bracket 58 as the plate is moved toward or from the bracket by endwise movement of the spindle 56, this arrangement serving to maintain the bracket 58 and the last support in the same angular relation with reference to rotation about the axis of the spindle 56 so that the bracket and the support must rotate in unison.

The means for clamping the insole upon the last comprises mechanism which is carried by the bracket 58 and includes a holder 7 6 pivoted on the bracket near the neck of the last to swing about an axis extending longitudinally of the last and at right angles to the spindle 56. Secured upon this holder by means of a thumb screw 7 8 is an arm 80 which is formed to extend down the side of the last forwardly of the heel portion and is bent to extend inwardly over the last bottom to substantially the longitudinal median line of, the last. This arm carries a clamp member 82 which extends therefrom toward the rear of the heel seat and is roughened or provided with teeth at its end portion for the purpose of effecting secure engagement with the insole. This member is somewhat inclined to the plane of the last bottom, as shown in Fig. 3. and is slightly resilient, so

as to permit the clamping device to be maipulated readily notwithstanding slight variations in the thickness of diflerent insoles or the height ofdifiierentla'sts. In order to accommodate the device to greater variations in the height of lasts of diflerent styles or sizes, the arm 80 is adjustable with reference to its holder 76 through the provision of a slot 84in the arm and a projection 86 on the holder formed to engage in the slot 84 and maintain the arm in the same angular rela tion to the holder while permitting it to be adjusted to vary the position of the clamp member 82 with reference to the last support.

Movement of the clamp member into or out of position over the bottom of a last on the spindle 56 is effected through endwise movement of the spindle. For this purpose the holder 76 has secured upon one side a plate 88 provided with a cam slot 90 in which is received a roll 92 on a pin 94 which projects from the adjacent side of the plate 60. The slot 90 is so formed, as will be seen by reference to Fig. 2, that movement of the roll 92 efi'ected through endwise movement of the spindle 56 which carries the plate 60, will serve to swing the holder 76 about its axis on the bracket 58 and thus swing the arm 80 toward or from the side of the last and carry the member 82 into or out of posi tion over the last bottom. A spring 96 connected to the plate 60 and the bracket 58 tends to retract the last support toward the bracket and thus to maintain the arm 80 in inclined relation to the spindle 56 with the clamp member 82 in an idle position at one side of the position occupied by a last on the spindle. For operating the device to effect the clamping of an insole on a last the head 44 has pivoted thereon at 98 a hand lever 100 which is connected by links 102 to a bar 104 mounted loosely on the spindle 56 between collars 106 which are secured to the spindle. Between the bar and the forward collar 106 is a ball bearing 108 which is arranged to facilitate the rotation of the spindle through the turning movement oi the last when the lever is held in position to effect the clamping of the insole. A grip member 110 on the head 44 assists the operator in manipulating the lever.

In order to maintain the device when idle in a position convenient for the reception of a last, the bracket 58 is provided with a weight 112 which tends to occupy the position shown in the drawings, thus presenting the last support in such relation to the op erator that he may conveniently mount a last upon the spindle 56 between the member 64 while holding the last by the forepart in the usual manne In the operation 01. the device, assuming that the parts are in their idle positions, the operator picks up with one hand a last to which an insole is attached and mounts the last upon the end of the spindle 56, and with his other hand manipulates the lever 100 to effect the clamping oil the heel portion of the insole upon the last. ;As the spindle 56 is moved endwise-through its connection with the lever, carrying with it the other portions of the last support including the plate60 and the jaws 64:, it serves to displace the last bodily in a direction transverse to the plane of the heel seat, and at the same time, through theengage ment of the roll 92 in the slot 90, causesthe clamp member 82 to swingfrom itsidle position to a position over the last bottom. By reference to Fig. 2 it will be seen that a portion of the slot 90 is substantially straight and in parallel relation to the spindle 56 when the parts are in the positions represented. This construction affords provision for further movement of the last support toward the clamp member 82 after this member has been swung into position over the last bottom so that the insole may be firmly clamped upon the last. It will be seen also that with the slot shaped in this manner the clamp member is securely locked in position over the last bottom when the parts are in eifective clamping relation. As movement of the last support toward the clamp member continues, the last is forced farther inward upon the spindle and by engagement with the levers 66 causes the jaws 6 k to press upon the neck of the last at opposite sides to hold it firmly in position; The operator then sw-ings the work support to carry the parts to the position indicated in Fig. 3, after which the last is turned to cause the cutter to operate upon all portions of the edge of the insole which it is required to trim. During this operation the last support and the clamping device turn with the last about the axis of the spindle 56 and relatively to the lever 100, as will be readily understood from the preceding description. Wien the support is swung away from the cutter and the lever100 is released, the spring 96 immediately returns the parts to their idle positions, thus releasing the work and permitting the last to be removed from the spindle.

It will be seen by reference to Fig. 3that the presser member 18 constructed and positioned as shown and described presents no obstruction to the clamping device during the manipulation of the work and by pressure upon the insole adjacent to the point of cut assists in preventing the insole from' being deflected by the cutter. It will also be readily understood that the arm and other portions o'f the clamping device constructed as shown and described afiord no obstruction to the cutter in performing the usual trimming operation required in order to conform the heel portion of the insole tot-he contour of the edgesof the heel seat of the last and that the position of the axis of the holder 76 withreference to the last insures that the clampingdevice in its idleposition will opposeno obstructionto the insertion or removal of a last. 7

It will be evident that by reason of the arrangement of the rods orspindles 34:.and tO the work support is afforded a substantially universal swinging movement to facilitate the presentation of the work to the machine. In addition to this movement,the head 44, as hereinbefore explained, is permitted to turn relatively to the, arm 42 within limits set by the screws 4E8. This arrangement affords provision for such angular variation between the axis of turning movement of the last and the axis of the cutter as is desirable in order to permit the insole to be trimmed to the edge of the last bottom on lasts of difi'erent shapes.

Features herein disclosed which are common to applicants co-pending application Serial No. 35,816,'filed'June 23, 1915, are not claimed herein, since they are claimed in said co pending application. It should be understood also that although theinvention has been disclosed as embodied in mechanism having the details of construction shown and described, the invention in its broader aspects is not thus limited in its application but is susceptible of various embodiments within the spirit and scope of the appended claims.

Having described the invention, what, we claim'as new and desire to secure by Letters Patent of the United States is 1- 1. In a machine for trimming an insole attached to a. last, supporting means for the last movable to carry the last bodily to different positions in the machine and constructed to permit the last to be turned to bring difierent portions of the edge of the insole into position-to be trimmed, and a de-' vice for engaging the bottom face of the insole to hold the insole in position upon the last, said device being mounted to turn with the last in fixed relation thereto during the trimming operation, the device being movable also about an axis extending longitudinally 'ofthe last to an idle position at one side of the last.

2. In a machine for trimming an insole attached to a last,support1ng means for the last mounted for turning movement with the last to bring different portions of the edge of the insole into position to be trimmed and a device for engagingthe bottom face 7 of the insole to hold the insole in position upon the last, said device being mounted for turning movement wlththe last supporting.

means and for swinging movement also about an axis substantially at right angles to the axis of said turning movement. I

3. Ina machine for trimming the heel portion of an insoleattached to a last, the combination of a last support constructed'to permit the last to be turned about a substan-. ti ally horizontal axisto bring diiferent P01"? iso .its axis for varying tions of the edge of the insole into position to be trimmed, and a clamp member for engaging the'bottom face of the insole to position the insole relatively to the last, said member being arranged for turning movement with the last and also for swinging movement upwardly to an idle position above the last.

4. In a machine for trimming to the contour of the heel end of'a last the heel portion of an insoleon the bottom of the last, the combination with last supporting means, of means for engaging and holding the heel portion of the insole in position upon the last comprising an arm arranged to'swing toward and from the side of the last in a plane transverse to the longitudinal axis of the last forwardly of the heel portion and a member extending from said arm toward the rear of the last for engaging the heel portion of the insole when the arm is swung to operative position. 7

5. In a machine of the class described, the combination with last supporting means, of means for engaging and holding shoe stock upon the bottom of a last supported by said means comprising a device pivotally mounted to swing toward or from the last about an axis extending longitudinally of the last and having a stock engaging portion arranged to be carried over the last bottom by movement of the device toward the last, the device in cluding an adjustable connection intermediate between its stock engaging portion and the distance between said stock engaging portion and said axis.

6. In a. machine for trimming an insole attached to a last, supporting means for the last constructed to permit the last to be turned about an axis'in its heel portion to bring different portions of the edge of the insole into position to be trimmed, and a device for engaging and holding the insole in position upon the bottom of the last, said device being arranged to turn with the last during the trimming operation and being pivoted also to swing into and out of operative position about an axis extending longitudinally of the last adjacent to the neck of the last.

7. In a machine for trimming an insole attached to a last, work positioning means comprising a rotatable bracket, a last supporting device mounted for rotation with the bracket to bring difl'erent portions of the edge of the insole into position to be trimmed, and a device pivoted upon said bracket to swing in a plane transverse to the longitudinal axis of the last into and out of position to engage and hold the insole upon the bottom of the last.

8. In a shoe machine, last positioning means movable to effect bodily displacement of the last, a device for engaging and holding shoe stock in position upon the bottom eluding of the last, said device being movable from an idle position to a position in which its sto ek engaging portion is over the-last bottom, and means for effecting such movement of the device through movement of the last positioning means to eifect displacement of the last. l I

9. In a shoe machine, a last support in= aspindle for engagement in the last pin socket of a last, said support being movable to displace the last in the line of said spindle, a device for engaging andholding shoe stock upon the last bottom,said device being movable from an idle position to a po sition opposite to the end of said spindle, and means for effecting said movement of the device through the movement of the last support. i

10. In a shoe machine, a last support movable to efiect displacement of the last in a direction transverse to the plane of the heel seat, a device for engaging and holding shoe stock upon the bottom of the last, said device being movable into or out of operative position over the bottom of the last, and a con nection between said support and device for operating said device through movement of the support.

11. In a shoe machine, a last support movable to eifect displacement of the last in a direction transverse to the plane of the heel seat, a device for engaging and holding shoe stock upon the bottomof the last, said device beingmovable from an idle position to a p0 sition over thebottom of the last, and means for effecting said movement of the device through said movement of the support, the support being movable subsequently to carry the last farther in the direction of the stock engaging portion of the device to clamp the stock effectively upon the last.

12. In a shoe machine, a last support movable to effect displacement of the last in a direction transverse to the plane of the heel seat, a device pivoted to swing into or out ot' position to engage and hold shoe stock upon the bottom of the last, said device having a cam slot formed in one portion thereof, and a pin carried by the last support and movable in said slot for operating the device by movement of the support.

13. In a shoe machine, a last support movable to efi'ect displacement of the last in a direction transverse to the plane of the heel seat, a device for engaging and holding shoe stock upon the bottom of the last, said device being movable from an idle position to an operative position over the last bottom, means for effecting movement of the device to operative position at the beginning of said movement of the support, and means for maintaining the device in operative position during further movement of the support in the same direction.

14. In a shoe machine, a last support movable to effect displacement. of the last substantially in the line of the axis of its cone portion, a device for engaging and holding shoe stock upon the bottom'of the last, said device being pivoted to swing into or out of operative position over the bottom of the last, the device having a cam slot formed in one portion thereof, and a pin carried by the last sup ort and movable in said slot for operating saiddevice by movement of the support, said slot having a. straight portion arranged to assume a position parallel to the line of movement of the support when the device is in operative position and to cooperate with the pin to maintain the device in fixed relation to the last. I I

15. In a shoe machine, a last supporting spindle, a bracket rotatable about the axis of the spindle, endwise relatively to the bracket, means mounted on the spindle for engaging and positioning the neck of the last, 'a device for engaging and holding shoe stock upon the bottom of the last, said device beingpivoted on the bracket to swing into or out of opera ative position over the bottom of the last, and means for swinging said device by endwise movement of the spindle,

16. In a shoe machine, a last supporting spindle mounted for rotative and endwise movements, means carried by and movable with the spindle for engaging and positioning the neck of the last, a bracket connected to rotate with the spindle about the axis of the spindle, means for'prev'enting'the bracket from moving endwise with the spindle, a device for engaging and holding shoe stock upon the bottomof the last, said device 'being pivoted on the bracket to swing into or out of operative position over the bottom of the last, and a connection between the spin} dle and said device for swinging the device through endwise movement of the spindle.

17. In a machine ofthe class described, an endwise movable last supporting spindle,

Copies of this patent may be obtained the spindle being movable a device connected with the spindle for engaging and holding shoe stock on the bottom of the last, said device being movable into or out of operative position over the bottom of the last, means operated by the endwise movement of'the spindle for inoving said device, and a lever for operating Y the spindle.

18. In a machine for trimming an insole attached to a last, a work support movable to carry the work bodily to diflferent positions in the machine and having means for supporting a last for turning movement to bring difi'erent portions of the insole into position to be trimmed, a device carried by said work support for engaging the bottom face of the insole to hold the insole in fixed relation to the last during the trimming operation, said device being mounted to turn with the last and also to swing into and out of position over the last bottom, and means comprising a hand lever mounted on the work support for swinging'said device.

19. A machine'for operating upon shoes, a last supportmg having, in combination, spindle for supporting a last carrying a. shoe, aheel seat engaging plate, and means for retracting the spindle and thereby simultaneously swinging the heel seat plate to permit the unobstructed insertion and removal of the shoe.

20. A machine for operating upon shoes, having, in combinatioma shoe support, and means for bringing the soles of shoes of all sizes mounted on the support invariably into the same plane comprising a plate carried by the shoe support, and means through the movement of theshoe support toward and from the said plane for moving said plate widthwise out of operative position.

In testimony whereof we names to this specification. 7

l LOUIS M. BROWN.

ALBERT A. MACLEOD.

have signed our for five cents each, by addressing the Commissioner or Iatents,

Washington, D. C.

operated of the shoe into and

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