US1311197A - A corpo - Google Patents

Description

H. n. WEBB.

TRIMMING MACHINE. APPUCATION HLED NOV. 5. 1911.

RAP" co WASHING-TON, b. c.

' jM/f/v 7275.:

Patented July 29, 1919.

2 SHEETS-SHEET l- H. D. WEBB. TRIMMING MACHINE.

APPLICATION FILED N(1V.5. 1917;

Patented July 29', 1919.

2 SHEETS-SHEET 2.

UNITED STATESPATENT OFFICE.

HORACE D. WEBB, ROCHESTER, NEW YORK, ASSIGNOR, BY MESNE ASSIGNMENTS, TO

UNITED SHOE MACHINERY CORPORATION, OF PATERSON, NEW JERSEY, A CORPO 1 RATION on NEW JERSEY.

TRIMMING-MACHINE,

Specificationof Letters Patent.

Patented July 29, 1919.

Application filed November 5, 1917. Serial No. 200,361.

Toall whom it may concern: 1

Be it known that I, I-IonAoE D. WEBB, a

citizen of the United States, residing at V sole after the insole is attached to a last.

The insole channeling operation frequently causes an appreciableelongation of the insole. The inferior material of which it is often made and the fact that it is channeled while in temper contribute to the produc-tion of this effect, as a consequence of which the insole fails to fit the last when applied to it. It has become the practice, therefore, to apply the insole to the last in such manner as toregister with it at the toe tip, and to trim off the surplus at the end. of the heel.

A difficulty also arises due to; the faulty shaping or to the changing in shape of the insole after its initial shaping, it being found that it is frequently too fat or wide in the shank and heel breast portions. This makes it desirable to trim all around the heel, instead of merely at the end thereof.

In machines used for this purpose prior to the present invention, the last with the insole tacked on it was supported on a jack and presented to a revolving cutter, the last resting against a gage as it was turned around on its thimble axis to present the heel-periphery of the insole to the cutter. \Vhen trimming insoles which were fat in the shank, it was found that the cutter left an abrupt concavity where it stopped trimming near the end of the shank edge. The corner between this concavity and the shank edge had to be trimmed by hand to avoid causing a hump in the upper of the completed shoe near the heel breast.

An object of the present invention is the correction of the difliculty described.

In accordance with one important feature ceases to treat the work. shown comprises a work support for holding of the invention, mechanism is provided for guiding the work in desired relation to the operating means from a templet, according to a corresponding relation between the templet and the operating means, and for changing the relation between the templet and operating means at a predetermined part of the work to guide the operating means tothe edge of the work. In the machine shown, a last with an insole attached is moved relatively to the operating means with the edge of the last in alinement with the operating means until a predetermined portlon of the work has been reached, and then is moved to carry the edge of the last out of alinement with the operating means to lead the line of operation out of the work.

Another feature of the invention is the combination of operating means and a work support arranged to carry the point of contact of the operating means around the work and to lead it out of the work when a predetermined point thereof has been reached in such manner as to insure a smooth condition at the place where the operating means The machine the edge of the last in alinement with the trimming means, and for moving it gradually out of alinement with the trimming means when apredetermined portion of the work has been reached. This organization insures trimming the insole to register with the contour at the back and sides of the heel, sloping the lineof cut out to the edge of an 'inso-le .fat at the shank.

Another feature of the invention is the actuation of the mechanism for controlling the line of cut by the movement of the work itself, irespective of guiding effort on the part of the operator. The proper placing of the line of cut 'in the work is thereby made positive and independent of skill on the part of the operator.

A further feature of the invention resides in rotating the work relative to an operating means, and swinging it about an axis distinct from the axis of the first-mentioned rotation, the latter axis being so arranged as to separate the operating means and the work. This combined rotation about two axes causes a gradual shift of the work from the operating means, the line of treatment is thus led gradually out of the work, and a smooth even result is produced.

binations of parts will be understood from the following decription of-a preferred embodiment of the invention, selected for purposes of illustration and shown in the accompanying drawings in which;

Figure 1 is an end view in elevation of an insole heel seat trimming machine, in.- cluding novel work positioning means in which the present invention is embodied;

Fig. 2 is a perspective view of thenovel work positioning means as viewed diagonally from the left with reference to Fig. 1;

Fig. 8 is a view in section through the cutter and adjacent portions of the illustrated machine showing the manner in which the work is presented for treatment.

Fig. 4 is a detail, partly in section, of the controlling apparatus;

Fig. 5 illustrates the novel action of my work support, in combination with the trimming means;

Fig. 6 illustrates diagrammatically the advantages secured by my invention;

Fig. 7 is a detail illustrating the action of the work supporting mechanism; and

Fig. 8 illustrates themovement ofthe point of contact between the last and the gage.

The machine illustrated comprises a frame 2 having bearings for a rotary shaft 4 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 (Fig. 3) adjacent to the edge of the heel seatto guide the last in its turning movement during the operation of trimlning around the edge of the heel portion of the insole 11. This guide member has a lip 12 projecting 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 contactwith,

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 to Keyes, No. 1,076,431, Oct. 21, 1913, which shows a similar construction.

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 away from the cutter when it is desired to 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 trimming operation is held by means of a light spring 20 against the insole adjacent to the point of cut to assist in preventing the insole from bending away from the cutter. A collar 22. secured to the shaft by a screw 24 that pro jects through a slot 26 in a sleeve 28 extending from the member 18 serves as an abutment for the spring 20 andby engagement with the inturned end of the sleeve determines the idle position of the presser member 18 so as to permit the insole to force the memberback slightly in opposition to the spring 20 when the insole is presented to the cutter. The member 18 is shown as formed as a spiderwith its arms extending between the teeth of the cutter 6, so that the edge of the insole 11 may be pressed firmly between the shield 8 and the lip 12 on one side and the spider 18 on the other, without interfering with the action of the cutter 6.

Secured upon one side of the lower portion of the frame 2 is a bracket 80 provided with a horizontal arm upon which the work supportof the machine is mounted. This arm is provided with a bearing for the reception of a stem 34 which projects from a block not shown bearing against the rightend of the bearing of the arm 32 as seen in Fig. 1. Projecting from the block atright angles to the stem 34 is a rod 40 which provides a bearing for the upwardly extending arm 42 of the work support. Mounted upon the upper end of the arm 42 is a head 44 having a stem 46 which engages in a bore in an offset portion of the arm so that the head may turn in a plane transverse to the arm. The head 44 has depending therefrom a pin 48, which enters a recess formed in the-upper end of the arm 42, and threaded through the arm at opposite sides are screws 52 the inner ends of which extend into the recess and serve, by engagement with the pin 48, to limit adjustably the turning movement of the head 44 in both directions about the axis of the stem 46. The purpose of such turning movement of the head 44 will be hereinafter explained.

Secured in a bore in the head 44 is a sleeve 54 through which extends a spindle 56 the forward end portion of which is arranged toenter the last pin socket of a last as shown in Fig. 2. The spindle 56 is free both to move endwise and to turn within the sleeve. The sleeve 54 is extended at one side of the head to provide a bearing for a cam 58 which is mounted thereon for rotation aboutthe axis of the spindle 56, the sleeve having a flange at its outer end-to retain the cam in position thereon. Secured to the spindle 56 at a distance from its forward end is a plate 60 which is formed with grooves 62 to provide a slideway for a pair of last positioning members 64, these members being movable upon the slideway toward and from the spindle 56. The members 64 comprise a pair of jaws arranged for engagement with the sides of the neck portion of a last to assist in maintaining the last firmly in position upon its support. Pivoted on one sideof the plate 60 are bellcrank levers 66 in one arm of each of which is formed a-slotfor the reception of a pin 68 which projects from the corresponding jaw 64, as shown in Fig. 2.= A spring 7 0 is connected to the levers 66 in such manner as to cause the jaws 64toassume their position of maximum separation. The other arms of the levers 66 project inwardly in position to be-engaged by the cone of the last when the last is mounted upon the spindle. It will thus be seen that when a last is mounted upon the spindle and is moved to cause the spindle to approach the bottom of the last. p111 socket, the levers 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 cone of the lastso as to prevent the last from tipping and assist in maintaining it in fixed relation to the spindle during the trimming operation. I

From a consideration of the construction as thus far described, it will be seen that including the plate .60 and the jaws 64, will serve to effect displacement of thezlast trans.- versely of the planeof its: heel seat portion. Extending frointhe plate '60 are pins 74 which are arranged for sliding engagement in recesses in the cam 58 as the plate is moved toward or from the cam by endwise movement of the spindle 56, this arrangement serving tomaintain the. cam 58 and the last support in the same angular relation with reference torotation 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 mounted upon an arm 59 extending fromthe cam 58 and including amember 76 which is arranged for sliding movement in substantially parallel relation to the spindle 56. Secured upon the slide 76 by means of a thumb screw 78 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 inwardlyover the last bottom to substantially the longitudinalmedian' line of the last. This arm carries a clamp member 82 which extends therefrom toward the rear of the heel seat and has a plurality of pointed pins 84 for effecting secure engagement with the insole.

- The member 82 is formed of slightly resilient material and is inclined somewhat with reference to the plane of the last bottom so as to permit the clamping device to be manipulated readily notwithstanding slight variations in the thickness of diiferent insoles or the height of different lasts.

means of a screw and slot connection 85 the clamp member is adjustable with reference to the arm 80 to vary the position of its in- "to lasts of different styles and sizes.

sole engaging portion with reference to the rear end of the heel seat, particularly for the purpose of accommodating the (182E106 he arm 80 has a slot 88 in which is received a projection 90 of the slide 76 to maintain the arm in the same angular relation to the slide and permit the arm to be adjusted lengthwise of the slide to adapt the device for considerable variations in the height of different styles or sizes of lasts. Pivoted at its middle portion upon the cam 58 is a lever 94, the upper end of which is connected by means of a link 96 with the slide 7 6 and the lower end of which is connected by a similar link, not shown, with the plate 60 of the last support. It will be readily seen that with this arrangement endwise movement of the spindle 56 in either direction will cause the slide 76 and the clamp member 82 to move in the opposite direction.

I The operating means for effecting the clamping of the insole comprises a lever 1.04 pivoted at 102 to the head 44, and connected by links 106 with a bar 108 which is mounted loosely upon the spindle 56 between collars 110 on the spindle. These collars are shown in Figs. 2 and 4 respectively.

lVith this device the operator can readily effect with-one hand such relative movement of the last support and the clamp member as to clamp the heel portion of the insole securely in position upon the last and position the last firmly upon its support for the trimming operation. A grip member 114 on the head 44 assists the operator in operating the lever and in maintaining it in position to clamp the work while the work positioning means, including the last support and the clamping device, are rotated through the turning movement of the last which is effectedby the other hand of the operator.

In order to maintain the work positioning means when idle in a position convenient for the reception of a last, the cam 58 is provided with a weight 116' which tends to occupy the position shown in Figs. 1 and 2, thus presenting the last support in such relation to the operator that he may conveniently mount a last upon the spindle 56 between the members 64 while holding the last by the forepart in the usual manner.

It will be seen that by reason of the arrangement of the rods or spindles 34 and 40 the work support is afforded a substantially universal swinging movement to facilitate the presentation of the work to the machine. The member 42 carries an arm 120 extending adjacent the cam 58, and carrying a roller 122 arranged to contact with the cam. The cam is low at its middle part where it normally does not engage the roller and high at its ends, as shown in Fig. 4.

In addition to the substantially universal swinging movement of the work support,

by reagon of the manner in which the arm 42 is mounted upon the supporting bracket 30, the head 44, as hereinbefore explained, is permitted to turn relatively to the arm 42 within the limits set by the screws 52. This arrangement affords provision for such angularvariation 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 different shapes.

It will be evident from the preceding dc scription that the operator may manipulate the work support to carry the work toward or from position to be operated upon by the machine and may also manipulate the lever 10st to effect the clamping or releasing of the insole by the use of one hand, thus permitting him the free use of his other hand to mount the last upon the support or to remove it therefrom and to turn the last to cause the cutter to trim around the heel seat. lVith the parts in their idle positions it is only necessary, in order to position the work, to mount a last upon the end of the spindle 56 and to swing the lever 10% toward the grip member 11st, thus moving the last toward the clamp member 82 and simultaneously moving this member toward the last bottom to effect the. clamping of the insole. As pressure is applied upon the insole by the member 82, the last will be forced farther inward upon the spindle and the jaws 6%, through the operation of the levers 66, will be caused to press upon' the cone of the last at oppositesides to hold it firmly in position. The operator then swings the work support to carry the insoletoward the cutter. hen the parts-have been positioned in operative relation to the cutter, as shown in Fig. 3, the last is turned to cause the cutter to operate around the heel seat upon all portions of the edge of the insole which it is required to trim, the last support and the clamp member and their connections, together with the cam 58, being arrangedto turn with the last, and relatively to the lever 104:, in the manner previously explained. cutter with its long axis passing through the shaft 4, and with its edge in contact with'the gagelO at 118 (Fig. 8), and is then swung to one side and then to the other in order to trim around both sides of the heel, as indicated in Fig. 5. Machines of this type as they existed prior to my invention, trimmed a fat insole as shown on the left in Fig. 6, the cutter leaving a pronounced corner or hump at 12 1 where the trimming operation stopped. Then using the machine of the present invention, however, the high points ofthe cam 58 contact with the roller 122 as the last is swung toward its extreme position The last is first presented to the and the. reaction between. the:roller and the camttufnsnthe head44 about the axis as so as to tip the lastfgraduallya about the point of contact between the last: and :the outside corner of theguiderlO; This. point of contaet moves upthe side of the last: as it turns, as shown at 112. in: Fig; 8, thus drawing. the last edge andinsole outof alinementwith the cutter edge: and sloping the cutigently out to the edge-of the fat portion of the insole. A small movementntakes place about the axis-40 during th'e-entire.operation, in order to permit the last :to remain in contact with the gage 10.v Fig. 7shows in dotted lines the position of the last atrthe beginning of the swing, and in full lines the position ofthe last at the end. of the swing. The spindle holes showthe pivotal movement of the last and Fig. 8 illustrates how-the pivotal point of contact betweentthe last and the gage 10moves u-pthe side of thelast as it turns about :this point, so asto draw the insole away from: the cutters.

It will be seen by reference toFig. 3 that thepresser member18*constructed and positioned as shownand described presents no obstruction. to the clamping. device during the-manipulation1 ofpthe work: and by pressure upon: the insoleadjacent to the pointof cut assistsin preventing the insole.

fronr being deflected by the cutter; Itwill also be 1 readily understood a that the: arm 80 and other-portions ofxthe clamping device constructed as shown andidescribed afford no obstruction tothe cutter in performing the usual trimmingoperation required in order to conform theheelportion ofthe insole to the contour oftheaedges of the heel seat of the last.

Although the invention'has been disclosed as embodied 'insmechanism having-the, details of construction shown and described, it will be understood that the invention is not thus' limited-:in its application but is susceptible ofvarious embodiments within the spirit and :scope of the appended claims.

Having-1 described" the "invention, .what I claim as-new and. desire tosecure by Letters llt) crating means,- and aavorkisupport arranged to hold an insoleattached to a last, to present it to theoperating-means: and to carry thepoint of contact-(of the operating means and insole around thedastedge, and to separate said point of contact from said last edge when a predetermined portion of the insole has been reached.

3. In a machine of the character described, means for operating upon an insole carried by a last, manually movable last-supporting means arranged to carry the last to enable said means to operate progressively along the insole, and means arranged to guide the last-supporting means to carry the work gradually away from said operating means at a predetermined part of the work.

4:. In a machine ofcthe class described, means arranged to trim an insole attached to a last, andmechanism for supporting the work, said mechanism being movable manually to feed the work to trim the latter progressively, and meansoperable by such progressive feedingrmovement to move the work otherwise to taper ofl the trimming action in respect to the depth thereof.

5. In a machine of the class described, means arranged to trim an insole attached to a last, and mechanismyfor holding the edge of the last in alinement with the trimming means, and for moving it out of alinement with the trimming means when a pre determined portion ofthe Work has been reached by the trimming means.

6.-In a machine of the class described, operating means, mechanism arranged to guide the work in engagement with the opcrating means, said mechanism including a templet, and means arranged to change the manner of action ofthe templetat a predetermined point in the operation in such manner as to separate the operating means and the work. r I K 7. In a machineof'the class described, means for operating. upon a piece of work, and work-guiding -mechanism including a work-sustaining templet, templetesupporting means, and templet-guiding means, said mechanism being arranged to guide the work in engagement with the operating means, and to alter the relation. between the templet and the operating means when a predetermined portion oftheiwork has been reached, to separate the work and the operating means gradually. V

8. In a machine of the class described, operating means arranged to ,treat work guided from a templet, and mechan sm for holding the edge of thetemplet 1n alinement with the operating means and for moving it out of alinement with the operating means when a predetermined portion of the work has been reached. a

9. In a machine of the class described,

means arranged to operate upon work guided from a templet, and a mechanism arranged to move the-templet to present the work to the operating means, and t0.d1splace the templetv inrsuch manner as to lead the operating means out of the work when a predetermined portion thereof has been reached.

10. In a machine of the class described, means arranged to operate upon work guided from atemplet, and a mechanism arranged to rotate the templet to present the work to the operating means and to tip the templet about an aXis distinct from that of the said rotation in such manner as to lead'the operating means out of the work when a predetermined portion thereof has been reached. 7

11. In a machine of the class described, means for operating upon a piece of work, work-supporting means arranged to be moved manually to carry the point of contact of the operating means progressively along the work, and-means operated by the movement of the work for leading the point of contact out of the workgradually as said point progresses beyond a predetermined point. y

12. In a machine of the class described, means arranged to trim an insole attached to a last, means for holding the edge of the last in alinement with the trimming means during the trimming, and mechanism operated by the movement of the last during the trimming for moving its edge out of alinement with the trimming means when a predetermined portion of the insole has been reached by the trimming means.

. 13. In a machine of the class described, operating means, awork support arranged to present the work to the operating means, and mechanism operated by the movement of the work support-in the operators hands for controlling the presentation of the work to the operating means by thework support to guide the line of operation of the operating means.

' 14. In a machineof the class described, operating means,awork support arranged to rotate the work relative to the operating means, and mechanism operated by the movement of the support in rotating the work arranged to move the work bodily relative to the operating means to displace gradually the line of treatment from its normal position.

15. In a machine oftheclass described, means for operating on an insole attached to a last, guiding means contacting with the last as it moves to present difierent parts ofithe insole to the operating means, and mechanism for altering the relation of the guiding means to the last'when the operating means reaches a predetermined portion of the insole. I

16. In a machine of the class described, operating means, a work support, a guide contacting with the work and mechanism for controlling the presentation ofthe work to the guide by the work support.

1.7, In a machine of the class described,

means for operating on the work, manually movable work-suporting means including a work-holder capable of an independent movement, guiding means arranged to coact with said work-holder to guide the progress of the work relatively to the first said means, and mechanism operable by said independent movement of the work-holder for guiding the work gradually away from the operating means.

18. In a machine of the class described, means for operating on the Work, guiding means for guiding the progress of the work relatively to the first said means, said guiding means including a work-holder capable of an independent 1nanually-imparted movement, and mechanism operable by such move ment of the work-holder for guiding the work gradually from the operating means.

19. In amachine of the class described, means for operating on an insole attached to a last, guiding means contacting with the last as it moves to present'difi erent parts of the insole to the operating means, and mechanism operated by the movement of the work for changing the relation between the guiding means and the last when the operating means reaches a predetermined portion of the insole. Y

20. In a machine of the class described, operating means,a work support arranged to rotate the work relative to the operating means, and means for rotating the work around an axis distinct from that of the first-mentioned rotation to draw the work away from the operating means.

21. In a machine of the class described, a rotary cutter for trimming an insole attached toa last, a work support arranged for rotation of the insole about an axis substantially parallel to the axis of the cutter, and means for automatically swinging the axis out of parallelism when a predetermined portion of the insole has been reached by thecutter to draw the cutter out of the insole.

22. In a machine of the class described, means arranged to trim work attached to a templet, a guide arranged to contact with the templet to regulate the depth of cut into the work, and mechanism for gradually tilting the templet when a predetermined portion of thework has been reached to effect the merging of the trimmed edge of the work in the untrimmed edge at this portion of the work. 1

23. In a machine of the class described, means for operating on an insole attached to a last,a gage arranged to contact with the last surface to limit the penetration of the operating means into the insole, a work support constructed for movement of the last with its surface in contact with the gage to carry the point of operation of the operating means around the insole, and mechanism for tilting the last about the gage when a predetermined portion of the insole has been reached to guide the operating means out of the insole.

2 L Ina machine of the class described, a cutter, a support carrying a head constructed and arranged for the rotation of the work in contact with the cutter, and means for rotating the head on the support to draw the work away from the cutter.

25. In a machine of the class described, a cutter, a. support carrying a head constructed and arranged for the rotation of the work in contact with the cutter, and means for automatically rotating the head on the support to draw the work away from the cutter when a predetermined portion of the work has beenreached.

26. In a machine of the class described, a cutter, a support carrying a head constructed and arrangedior the rotation of the work in contact with the cutter, and means operated by the rotation of the work for retating the head on the support to draw the work away from the cutter.

27. In a machine of the class described, means ar anged to trim work attached to a templet, a guide arranged'to contact with the templet to regulate the depth of cut'into the work, and mechanism :for relatively moving the templet and guide when apredetermined portion of the work has been reached to effect the merging of the trimmed edge of the work in the untrimmed edge at this portion-of the work.

28. In a machine ofthe class described, means arranged to'trim work attached to a templet, a guide arranged to contact with the templet to regulate the depth of cut into the work, and mechanism for gradually tilting the templet about its point of contact withthe guide when a predetermined portion of the work has been reached to effect the merging of the trimmed edge of the work in the untrimmed edge at this portion of the work.

29. In a machine of the character described, a work-holder, movable means arranged to carry said work-holder, means arranged to operate upon a piece of'workheld by said work-holder, means arranged to engage and guide said work holder to guide the work relatively to said operating means, and means arranged to cause a relative movement of the work-holder and, said guiding means in consequence of which the two latter conjointly retract the work from said operating means.

30. In a machine of the character de scribed, a work-holder, means for supporting said'holder, said supporting means being arranged to be moved manually and the work-holder being capable of being moved manually relatively to its supporting means, means arranged to operate upon a piece of work held by said work-holder, and means arranged to retract the Work from the operating means in consequence of rocking the work-holder thereon.

31. In a machine of the character described, means for supporting a last having an insole secured thereto, said means-being arranged to support the last by its last-pin socket so that the last may turn about the axis of said socket, means for operating upon the insole, said supporting means being movable toenable the last to move otherwise than about said axis, and means arranged to move the last to separate the work gradually from said operatingmeans in consequence of turning the last about said axis beyond a predetermined angle relatively to the latter.

32. In a machine of the character described, inso-le-trimming means, manually movable last-supporting means relatively to which the last may be moved Within predetermined limits to cause the trimming means to trim progressively along the insole, and means arranged to co-act With the last when the trimming has progressed to a predetermined point, to move the last so as to retract the insole from the trimming means gradually as the trimming is con tinued beyond said point.

33. In a machine of the character described, insole-trimming means, manually movable last-supporting means relatively to which the last may be moved to trim progressively along the heel seat margin of the insole, a last-engaging guide, and means arranged to rock the last on said guide to separate the insole from said trimming means when the side of the last is brought to bear on the guide.

In testimony whereof I have signed my name to this specification.

HORACE D. IVEBB.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

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