US1881670A - Machine for use in making rubber shoes - Google Patents

Description

Oct. 11, 1932. F. D. KINNEY MACHINE FOR USE IN MAKING RUBBER SHOES Filed Oct. 29. 1929 3 Sheets-Sheet 1 Avg/5N 70R;

WRM

Oct. 11, 1932.

F. D. KINNEY MACHINE FOR USE IN MAKING RUBBER SHOES Filed 001;. 29. 1929 5 Sheets-Sheet 2 Oct. 11, 1932. KlNNEY 1,881,670

MACHINE FOR USE IN MAKING RUBBER SHOES Filed Oct. 29, 1929 5 Sheets-Sheet 3 Patented Oct. 11, 1932 tuNiTEosrA'rEs PATENT OFFICE f FAY D. KINNEY, SOUTHBRIDGE, MASSACHUSETTS, .ASSIGNOR TO UNITED SHOE MACHINERY CORPORATION, OF PATERSO JERSEY N, NEW JERSEY, A CORPORATION OF NEW Application filed October 29, 1929. Serial No. 403,313.

This invention relates to machines for use in manufacturing foot wear and is herein illustrated as embodied in a machine for use in manufacturing rubber overshoes.

In my prior application, Serial N 0. 309,181, filed September 29, 1928, there is described apparatus for assembling the parts of the upper of a rubber overshoe upon a form. In the use of that apparatus a vamp mounting machine is operated to mount a vamp blank of unvulcanized rubber wrong side out upon a form to produce a. closed vamp; and thereafter other machines are operated to mount other parts, also wrong side out, upon the vamp and upon each other. The upper, thus assembled wrong side out upon the form, is removed from the form and turned right side out. Thereafter the assembled upper is placed, together with an insole, upon a last and the manufacture of the shoe completed including attaching an outersole and sub jecting the shoe to vulcanization.

The vamp mounting machine of the abovementioned apparatus comprises, as has been indicated, a form and means for mounting a vamp blank upon it. This form is a com paratively thin one having flat parallel sides so that, when subsequently passed between pressure rollers, the vamp and other parts of the upper will be pressed firmly against the form and against one another. The rear end of this form is rounded from side to side and is curved from top to bottom to correspond to the top-to-bottom curvature desired at the heel end of the finished shoe.

A According to one feature of the present invention there is provided a form of simplified shape which has no curve from top to bottom at its rear end whereby the mounting of the rear ends of the vamp upon the form is facilitated, the illustrated form being provided with a rear end which is flat. If the new form were made from the old form merely by cutting of the curved rear end of the old form it is obvious that the closed vamp produced by mounting a vamp blank upon the new form would not be of the same dimensions as the one produced by mounting the same blank upon the old form. In order,

therefore, to produce upon the new form a closed vamp of the proper dimensions, the form ispreferably thickened in a suitable manner, the illustrated form being thickened along its longitudinal middle. Although the rear end ofthe illustrated form is flat, it should be understood that, instead of a'flat surface, other cylindrical surfaces may be employed, a cylindrical surface being one generated by a right line or generatrix which moves parallel to a fixed right line or to itself. The generatrix or element as it moves may touch a directrix which may be a curve or a right line in which latter case the generated surface will be flat. Therefore the term cylindrical surface as herein used includes a flat surface.

According to another feature of the invention there is provided in combination with means for holding a form, a plurality of independently movable supports, the surfaces of which are also cylindrical in the above sense, upon which a shoe part may be placed, and means for operating the supports to apply the shoe part to the form. In the illustrated machine a form of the shape described above is held above two fiat supports upon which the vamp blank rests, and the supports are swung up one after the other to apply the blank to the form.

Other features of the invention relate to means for overlapping the ends of the shoe part at the heel end of the form and to means for trimming these ends.

These and other features of the invention including certain details of construction and combinations of parts will be described as embodied in an illustrated machine and pointed out in the appended claims.

Referring now to the accompanying draw- 1I1gS,- I

Fig. 1 is a front elevation of a machine in which the invention is embodied, certain shafts being shown in section, one of the vamp supports being shown as having been swung up into vertical position;

Fig. 2 is a side elevation of the machine with a portion of the lower part in section;

Fig. 3 is a horizontal section through the clamping and cutting mechanism and a portion of the form;

f 4 is a view partly in section and partly in elevation showing more particularly the relation of the form'to the means for supporting the shoepart and applying to the form; and i r p p Fig.5 is-a: perspective of the operative portion of the form.

the legs" ofthe vamp are In the operation of this machine a shoe art, suchasla vamp, is placed in substan tially' horiaental position upon .a i work sup; port which. comprises two. flat-faced hinged members. The form.--is held. in position above the vamp, and then the hinged shoe supports are swung upwardly one 1ata time to apply the vamp to the form. The ends of then overlapped upon the heel end'of the form so that, when the'operation of the machine has been comin in side,

at the top and the bottomand each side of the forn consists of twoplanes 11, 13 which meet-in a rounded ridge15. It has been found that a formof this general shape when properly proportioned will give to a vamp mounted upon it the proper dimensions to I fit over a particular last so that, when the vamp has been removed from the form it can be assembled together with "an insole upon the last. i

Referring now 'to' Fig. 2 in which, as in .Fig. '5; the form is shown bottom side up; the P shaft 27, have outer ends which are square so form has a rib along its bottom which is received 1n a guideway in an arm 17. This arm is rigid with a bar 18 which 1s vertically slidable' in a suitable guidewayin the frame of the machine; said bar having a pin 19 which is received in'a socket in one endof the form. The slide bar 18 has at its lower end a oll 21 running in a cam track 23 formed in a cam 25 which is fast to a rotary shaft 27. t is thus possible by rotating-the shaft 27 to raise the form or to lower it intothe position shown. The form is normally moved up into its upperposition and left there while the operator places the vamp uponthe'vamp supportingmeans. -Thereafter the form is moved down into the posi. N tion shownpreparatory to causing the sup;

porting means to apply a vamp to the form. There-are two supports for the vamp, as best'shown in Fig. 4, comprising two plates.

29 and 31-which carry respectively pads 33 i and 35 of'vulcanized rubber. Inasmuch as these two supports are mounted and operated in substantially the same manner, the mounting and operation of only one of 'theni'will be described in detail. The support '29 has at I its lower portion near one end (Fig. 2) a pan of lugs 133 and near its other end a simimachine and isheld in lar pair of lugs 135. roller 37 which runs in acurved slot 39 (Fig. 4) formed in a stationary plateetl. The lugs 135 carry a roller 43 which runs in a similar curved slot formed in a stationary plate 45. In order first to swing the support 29into the dotted line position'shown in Fig. 4 and then to rock the support about, the thick middle portion of the form, the support near. its upper end has a lug 47 which is loosely pivoted by a pin and slot connection to a segin a suitable track formed in the frame of the that track by an idle gear 51 and by a gear 53-which operates the segmental rack. The gear 53 is fast to a shaft 55 so that, by rotating the shaft in one direction, the plate 29 may be moved through the dotted line position in'Fig. i to the full line position that figure so as to apply a portion of the vamp partly to one of the inclined faces of theside of the formand partly to the other inclined face. 1 r

The other support 31 is looselypivoted to a segmental rack bar 57 which is guided in a suitable track in the frame of the machine and is held in that traclrby an idle gear 59 and by a gear 61 by which it may be operated.

This gear 61 is fast to a shaft 62 so that, by

' turning thiseshafhthe {support 31 may first 11 of .theform. The shafts 55'and 62 may be rotated by any suitable mechanism. In the resent machine these shafts, as well as the 6 down into the position shown. The shaft 55 is then rotated to move the support 29 into the position shown and then to move itback into initial position whereby one side of the vamp is appliedto one side of the form. Next the shaft 62 is rotated first in one directionto cause the other half of the vamp to be applied to the otherjside of the form and then in the opposite direction to return the support 31 to normal position. I 7 p it is necessary that I the ends of the legs of the vamp bebrought over upon'the rear end of the form as shown in Fig. 5; and itis also desirable that the extreme ends of these legs should be trimmed. To this end the fol- The lugs 133 carry a mental rack bar 49. 'Thi'srack bar is guided slot 77 through which riedby the vamp-supporting plate 29. With this construction, when the plate29 is swung up into the position shown, the frame 63 is swung with. it. The frame 63 is provided with two clamps which engage one leg of the vamp at two localities. Referring more particularly to Fig. 3 one of these clamps is shown at 75, said clamp having a passes a pin 7 9 carried by the frame 63. The operative end of the clamp 75 has a jaw 81 provided witha recess which fits over a projection formed on the frame 63 so that, when the clamp is in the position shown in Fig. 3, the vamp 100 is securel y gripped. In order tomove the clamp 75 into this position, there is pivoted to the frame 63 at 83 bell crank lever, one arm 85 of which serves as a handle while the other arm87 acts upon the clamp 75. There are two of these clamping members upon the frame 63, asbest shown in Fig. 1, in'which the handle for operating the upper clamp is indicated at 85 and the handle for operating the lower clamp is indicated at 89. Associated with the other vamp support 31 is a frame 91 (Fig. 1), said frame having mounted upon it two clamps exactly like those on the frame 63, the handles for operating these clamps being indicated at 93 and 95.

'As has'been explainedabove, it is desir; able to trim the ends of the legs of the vamp which extend over the rear portion of theform, as shown in Fig. 5. In order to trim the ends each frame 63, 91 carries a roller cutter which is 'reciprocatingly mounted in the frame so that, when one of the frames has been moved to its vertical position this cutter can be run up and down to trim ofi theend of one leg of the vamp. Inasmuch as these cutters and theirmountings are substantially the same in both cases, only one of them will be described. Referring again to Fig. 3, the cutter 97 associated with-the frame63'is shown. This cutter is rotatably mounted in a'carrier 99 which has a rectangular groove to receive a rectangular guide101 integral with the frame 63. Integral withthe carrier 99 is a handle 104, whichmay'be grasped by the operator to run the cutter97 up and down so as to sever the end of one leg of the vamp. The other frame 91 (Fig. 1) is provided with a similar cutter 92, the handle of thecarrier of which is indicated at 106. 3

. When the vamp support 29 is swung up into the positions shown in Figs. 1, 2 and 3, the frame 63, which carries the clamps 75 and the cutter 97, is swung up past the rear end of the form, as best shown in Fig. 2, but is spaced slightly from said rear end. It is then necessary tomove the frame toward the end of the form in order to apply the end of one leg of the vamp firmly to the rear end of the form. To this end the stud 67 upon which the frame 63 (as well as the frame 91) ispivotally mounted, is carried by two posts 103 which are integral with a base 105, said base being horizontally slidable upon a stationary guide 107. Threaded into the right-hand end of the base 105, as viewed in Fig. 2, is a pin 109 which passes loosely through a lug 111 on the frame, there being a coiled spring 113 located on thepin between the lug 111 and a nut 115 threaded upon the outer end of the pin 109. A look nut 117, also threaded upon the pin 109, holds the nut 115 from turning. WVith this construction, the base 105 is urged at all times to move toward the right, the normal position. of the base due to the pull of the spring 113 being determined by contact of a roll 119, which is carried by the base 105, with the low portion of a cam 121 whichis mounted upon a rotary shaft 123. When this shaft is given half a revolution, for example by means of a hand crank having a socket which fits on the outer square end of the shaft, the base 105 and with it the frame 63 is moved to the left to press the end of one leg of the vamp against the rear end of the form 6 (see Fig. 3). 1

Assuming that the two vamp supports 29, 31 are in their initial horizontal position and that the form 6 is in its initial upper position, a vamp is placed upon the rubber pads 33, of, the vamp supports, it being understood that there are marks upon these pads to insure that the vamp shall be. properly placed. The shaft 27 is then rotated until the form 6'is brought down into the position shown in Figs. 1, 2 and 3. The clamps 75 of the frame 63 and the similar clamps of the frame 91 are then operated by means of the handles 85, 89, 93 and 95 to grip the ends of the legs of the vamp. The shaft is rotated in a direction to cause the vamp support 29 to move through the dotted line position into the full line position of Fig. 4. I This swinging movement of the support 29 raises the clamp-andtzutter frame 63 into asubstantially upright position, as shown in Figs. 1, 2 and 3. The short shaft 123 is given a half rotation to cause the frame 63 to press the end of one leg of the vamp against the rear end of the form 6; and then the cutter 97 is operated to trim the end of that leg of the vamp. The short shaft 123 is then given another half revolution to permit the spring 113 to withdraw the frame 63 slightly from the rearend of the form. The shaft 55 is turned to return the vamp support 29 and the frame 63 to their normal substantially horizontal positions. The shaft 62 is then rotated to swing up the other vamp support 31 and the other frame 91. The short shaft 123 is given half a rotation to move the clampandmutter-carrying frame 91 toward the rear end of'the form, and the cutter 92 which is associated with the frame 91 is moved u and down by means of its handle 106 to sever form havingsides the surfaces of which are i I position. The

I described; ,3

cheese or the other leg ofthe vanip it being understood that the frame members '63 and 91 and their-clamps are so, constructed that the ends of the vamp ,are overlapped upon the rear end of the form,'as shown in Fig. 5. The' sliafts-123 and 62 havethen rotatedin the order-named, the former to' withdraw the frame 91 slightly from the rear end of the formand the latter to return thevamp support, 31 and the frame 91 to their initial substantially horizontal position. The'shaft 27 is-rotated to raise the form to its uppermost operator then removes the vamp 100 from the form and places a second 'vampzupen the supports'29,31'. v-

Although the invention has been described as einbodiedin a particular machine it should be understood that the; invention is not limited in the scope of its appllcation to the particulartmachine which has been shown and The form of the that of prior application Serial No. 509,181, hassijdes the surfaces of which are cylindrical andis provided with means whereby it may be held by various machines used in applying certain parts of the upper to the form and to each' other; and broad claims to all Y sub ect 7 mattercommon to thepresent application and to the prior application have been presented in the prior'application. in I Y Havi g thus'described my invention, what Iclaimas new anddesire to secure by Letters 7 Patent of the United States is:

- 1. A machine of the class described having,

in combinatiom'means for holding a form the surfaces offlthesidesof which are generated by a right'line moving parallel to itself, and

" means for supporting a shoe part, said means being adapted to be operated why the shoe part directly. against the said surfaces of the 2.:A machine of the class described having,

in combination, means for holding a form the s'urfacesto'f the sides and re'arendpf which are each generated by aright line 7 moved vparallel to itself, means for supportand ing a shoe part, means for operating the supporting means to apply a portion of the shoe part directly to the side surfaces of the form, meansflfor applying another portion of the shoe part to the surface of the ,rear end fQftllB form'.- .7 t

c 3; A machine of the-class; described having, in combinationfmeans forfiholding a a form having, sides the surfaces of which are apply the shoe part to the form. 7

generated bya right line moved parallel to I itself, a plurality ofsupports for a shoe part the surfaces of said supportsbeingalsogenerated by a right line movedparallel to itself, and meansforrocking the supports to l. Ainachineiof the class described hav-' ing, in combination,.-means for holding a present application, like 7 generated by 'a' right lineimoved parallel to A itself, a plurality ofsupports for a shoe part,

the surfaces of said supports being also gen 5. AL -machine of'the class described haw ing, in combination,.means forholding'a form the surfaces ofone .s1d'eof whlchcom- :prise two surfaces each generated by alright line moved parallel to a fixed right line, said twosurfaces beinginclined to ,each other and 'meeting ina ridge, a support for aiportion of a shoe part, said support having a surface coextensive withsaid two surfaces of the form,

and means for moving said support to apply theshoe part to the two surfaces of the form.

' 6. Amachine of the'class described hav- 1 ing, in combination, means for holding a form'the, surfaces of one-side ofwhich comprise two surfaces the elements'of'both of which are parallel, said surfaces being inclined' to each other and meeting in a ridge, a support for a portion of a shoe part, and means for swingingrthe-support successively about different axes each parallel to the elements of said surfaces to apply the shoe part to the'surfaces of "therform; 7. A machine of the class described having, 1n combinationfmeans. for holding a form the surfaces of-each side'of' whichcomprise two surfaces inclined to each otherand meeting in aridge, a plurality of supportsfor a shoe part, andomeans for rocking each'support first about an axis located substantially at the'top of the form" and then about an axis coinciding substantially with one of the a'thiclrer'middle' portion, aplurality of supports'for a vamp one for each side of said vamp,and means for swinging each support into afposition to apply aiportion of the vamp to the adjacent portion of the form and for thereafter rocking each support about the thick portion of the form to applyianother portion of the vamp to the remote portion of theform. I Y a 9. A machine of the class described having, in combination, means for .supporting'a form the surfaces of the sides 'ofwhich form each comprise two surfaces arranged at an angle 7 to each other, two supports'upon which a .vamp may be placed, and means for moving each support in such manner as" to cause it to apply one portion of the vamp to the surfaces on one side of the form and thenito apply another portion to the surfaces .on the other side of the form.

' 10.,A machine of the class described having, in combination, means for holding a form, a'plurality' of supports? for a shoe part located below the form, a'pivot carried by each support, curved tracks in which the pivots are respectively held, and means for swinging the supports about their pivots and for causing the pivots to move in their tracks. 11. A machine of the class described hav'- ing, in combination, means for holding a form, means for applying a shoe part to the form, and means for trimming the shoe part on the form, said means comprising a roller cutter movable in a predetermined path.

12. A machine of the class described having, in combination, means for holding a form, shoe part supports movable to apply the shoe part to the top and sides of the form, clamping and cutting mechanisms for engaging a margin of the blank at one end, means for causing the supports to move into proximity to the sides of the form and for causing the clamping and cutting mechanisms to move with the supports into proximity to an end of the form, and means for moving the clamping mechanisms independently of the supports closer to the end of the form 13. A machine of the class described hav ing, in combination, means for holding a form, a plurality of independently movable substantially fiat supports upon which a shoe part may be placed, and means for operating the supports to press the shoe part directly to the form. a

14. A machine of the class described having, in combination, -means for holding a form stationary, a plurality of independently movable supports the surfaces of which are substantially fiat upon which a shoe part may be placed, and means for moving said supports to apply the shoe part against the form by direct pressure.

15. A machine of the class described'having, in combination, two substantially flat supports upon which a vamp may be placed, means for holding a form in operative rela: tion to the supports, means for causing one of the supports first to move toward the form to apply one side of the vamp to one side of the form and then to move away from the form, and means for thereafter causing the other support to move similarly.

16. A, form for use in the manufacture of .boots and shoes to impart preliminary shape to apart of a shoe upper said form having side and rear surfaces adapted to receive respectively side and rear portions ofthe shoe part, each of said surfaces being formed by a rectilinear generatrix moved parallel to itself.

17. A form for use in the manufacture of boots and shoes to impart preliminary shape to a part of a shoe upper, said form having a substantially flat'rear end adapted toreceive rear portions of the'shoe part and sides adapted to receive side portions of the shoe part, the form being thicker at its middle than at its top andbottom, and the sides thereof having surfaces each generated by a llf

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