US1494706A - Shoe-press attachment - Google Patents

Description

May 20 1924. 1,494,706 H. R. POLLEYS SHOE PRESS ATTACHMENT Filed April 30, 192] I5 Sheets-Sheet l $513 ,hlm Cinto/mau.

May 20 1924- H. R. POLLEYS SHOE PRESS ATTACHMENT Filed April 3o, 5 sheets-sheet 2 3 mmm/to@ )wm/fram 1E. Pouw@ H. R. POLLEYS SHOE PRESS ATTACHMENT May 20 1924.

Filed April .30, 192] 3 Sheets-Sheet 5 3 nvewto Moeu 322962496 Patent fr ay ao, aaa

L. CANDEE COMPANY, A CORPORATION OF CONNECTICUT.

SHOE-PRESS ATTACHMENT.

Application led April 30, 1921. SeriaL No. 465,804.

To all lwhom t may concern.

Be it known that I, HERBERT R. PoLLEYs, a citizen of the United States, residing at New Haven, in the county of New Haven and lState of Connecticut, have invented certain new and useful Improvements in Shoe-Press Attachments, of which the following is a full, clear, and exact description.

This invention relates to a shoe press attachment, more particularly to a device for supporting a last during the pressing` and rolling of the outsoles of vulcanizable footwear and also the uppers thereof.

For many years the usual method of making vulcanizable footwear articles has been to build them up piece by piece on a last and to compact the various layers by hand rolling. drical in form the curves of the last cannot be readily followed and portions of the article may not be properly compacted, re-

sulting in blisters in the finished product and in the separation of the parts at points where subjected to iexing and strain in use. In recent years a number of machines have been introduced for laying on the outsole by rolling or pressing and in certain of these provision is made for at the same time pressing the upper at all points to thoroughly compact its component parts.y A common type of machine. comprises two flexible diaphragms between which the footwear article is introduced, the diaphragms being then caused by fluid pressure to envelop and press the outsole and upper. These machines vary in detail, some operating on only one articleat a time and others on a plurality.

It has been discovered, however, that the preliminary hand-rolling given the uppers when making them is in most cases suiiicient for all practical purposes, except at the crown of the vamp portion` at which point the article is flexed in walking. At this point it is therefore desirable to insure the adhesion of the various layers by vmechanical pressure.

As far as I am aware',` in the double diaphragm machines as previously constructed, the means for supporting the last was not adjustable or was not provided with a suicient number of adjustments to As the roller used is cylin.

allow different sizes and styles of lasts to be properly `positioned during .the solepressing operation. This lack of adjusting means is particularly felt where it is desired to incline a shoe to better roll over the edges of either the heel or toe portion of the sole.

By my invention a resilient means such as a Huid actuated diaphragm is used to press the sole onto the upper, while the diaphragm or other device formerlyy used to press the entire upper of the shoe may be omitted, and means are provided instead for pressing the shoe at the crown of the vamp portion only. In order to allow the shoe to be variously inclined to alter the pressing effect at the heel and toe portions of the sole, and to insure the proper engagement of the vamp pressing means, an improved means for supporting the last is provided. If it be desired to press the entire shoe upper, instead of the vamp crown only, the last supporting and vamp pressing means may be used in connection with any suitable upper pressing device.

An object of my invention is to provide an improved attachment for sole presses.

Another object is to provide means for pressing the portions of the shoe upper which are subjected to the greatest flexing 1n wear.

Still another object is to `provide anim-h proved means for supporting diffe-rent lasts and for readily varying the height and angle of support of the last.

A further object isI to provide an improved means for rolling over the sole edges into contact with the upper.

A. still further object is to provide a vamp pressin means which is readily adjustable for various sizes and styles of footwear.

For a detailed disclosure of the invention reference is' had to the accompanying specification and drawing, in which latter;

Fig. l is a transverse section partly broken away through a shoe press showing my invention and taken on the line 1 1 of FigJQ;

Fig. 2 is a longitudinal section on the line 2 2 of Fig. l;

Fig. 3 is a top plan view with the cover or top removed;

F ig. 4 is a. plan view of the vamp-pressing block; I

Fig. is a side elevation thereof partly in section;

Fig, 6 is an end elevation of the block;

Fig. 7 is a side elevation of a slight modi'- fication of my invention.

Fig. 8 is a. plan vlew of a modified form of the block; and

Fig.9 is an end elevation thereof. Referring to the drawings the numeral 1 represents the frame of a sole pressing machme which can be of an ordinary form 2 a cover 3 is 'disposed which is hingedly.

mounted on the frame of the machine b v the hollow hinge pin 4, and secured to the cover 3 and forming a chamber therewith is a flexible diaphragm Fluid under pressure may be introduced into said chamber by means of the bore 6 connecting with the hollow hinge pin 4 leading to a source of supply in the manner shown in patent to Stuart beforementioned,` and the cover may beactuated and locked i-n position as shown in the Stuart patent. Any other suitable means for supplying fluid under pressure to the chamber and actuating and locking the cover may besubstituted. Attached to the` lower wall of cavity 2 is a bearing member 7 in which is longitudinally slidable a rotatable shaft 8 having a hand wheel 9 at one end thereof. A series of annular grooves 10 are formed in the shaft, with which is adapted to coact a spring-pressed detent 11 in order to hold the shaft in adjusted position. linned or otherwise secured to the shaft is a gear 12 meshing with a gear 13 rotatabl)7 secured in a bearing block 14, and threadedly secured within the gear 13 is a snppoit or rod 15, the lower end of which is forked as shown at 16, which forked end straddles Athe reduced portion 17 of shaft 8 in order to prevent rotation of the rod when gearr13 is actuated. lastsnpporting bloc-k 18 is provided With a recess 19 which loosely fits over the upper end of rod 15, and the block 18 is pivotally connected to rod 15 b v the pivot pin 20. A spring-pressed pin 21, disposed in a recess in rod l5, presses against, the block 18 and normally tends to tilt upwardly the toe end of a last supported on the block. The shoe lasts are ordinarily provided with sockets for the reception of supporting pins, which sockets vary in spacingl and diameter according to the size of the lasts. By providing the block 18 with a plurality of spaced threaded sockets 22 of the same diameter, the correspondingly threaded last-supporting pins 23. of an desired diameter beyond their threaded en s, may be variably spaced Asupporting mechanism, and

memos accordin to the size last used. A second gear 24 1s slidably mounted on shaft 8 by means of the spline 25, and a spring 26 intei-posed between the gear and the bearing member 7 normally urges the gear into mesh with a gear 27 rotatably mounted -in a block 28. A support, orA rod 29 passes through gear 2T and has a threaded oonnection therewith, said rod being prevented from turning on actuation of the gear by means of the screw 30 threaded into the block 28 and slidably engaging a groove 31 in the rod 29. At its upper end the rod 29 is provide-d with a iattened and roughened circular shaped portion 32 on the opposite sides of which the similarly roughened forked ends 33 of the bracket34 are adapted to be clamped by means of the bolt 35 and thumb nut 35. base or block 36 is slidably mounted on the bracket 34 by a dovetail connection 36'. and resting on the block 36 is a toe-block 37 of rubber or other resilient material, which latter is curved to fit the general shape of the vamp portion of a last and held in place by a cover 38 of rubber or rubber-coated fabric, -the lower ends4 of the cover being` secured to the block 36 at the sides by 'means of the clamping plates 39 and 39 and the screws 40. In order to secure the toe-block in adjusted position a set screw 41 is threaded into the lower por# tion of the clamping plate 39 and is adapted to engage a. `series of recesses 42 in the side of bracket 34.

rlhe form shown in Figs. 7 to l9 is similar in all respects to that just described, except that the last-supporting devices are mounted as a unit in a frame or base 43. By using this form some of the former two-diaphragm type machines may be changed over into the single diaphragm type b v merely removing the lower diaphragm for pressing the upper, together with its last substituting therefor the last-supporting devices shown in Fig. 7. In others the form shown in Figs. 1 and- 2, or a modification thereof, may be used. ln the modified form shown in Eigs. 7 to 9 the means for holding the toe-block in adjusted position is also modified, the base or block 36 carrying the toeblock being provided with a series of Arecesses 44 in the wall of its dove-tail groove, while the bracket 34 is provided with a spring-pressed detent 45 adapted to engage any of the recesses 44 and yieldingly hold .the toe-block in adjusted position.

In operation alast 46 having a shoe upper 47 assembled thereon is mountedv :on the block 18 by means of the pins 23 on the block engaging the recesses 23 in the last. The toe-block may be slid longitudinally of the shoe last on account of the dove-tail connection of its base 36 with the bracket 34, and the bracket 34 may be angularly adjusted by loosening the thumb nut until the toe-block 37 is in proper position to engage the crown lof the vamp portion of the upper, as shown in Fig. 2. By means of the hand wheel 9 the supports or rods 15 and 29 may be simultaneously raised to thereby lift the last to the same extent at. both its heel and toe portions,'or by pulling out the hand wheel 9 to release the gear 12 from mesh, the rod 29 alone may be elevated to thereby raise the toe portion only of the shoe, or finally by rst simultaneously raising the rods 15 and 29 and then drawing out the hand wheel 9 to release gear 12 the rod 29 may be actuated so as to lower the toe portion of the shoe relatively to the heel portion. 'hen the last and accompanying upper with its laid outsole, and the toe block have been adjusted to the position desired, the. cover 3 is lowered, and fluid under pressure admitted to the chamber in rear of the fiexible diaphragm 5 to thereby' cause the diaphragm to press down and roll over the edges of the outsole on the upper. At the same time the resilient toe-block, 37, against which the toe ortion of the last and upper are 'pressed y the diaphragm 5, .causes the crown of the vamp portion of the upper to be thoroughly compacted and the various plies thereof firmly united. By inclining upwardly the heel or toe portion of the last the diaphragm 5 may be caused to bear more effectively and directly upon the correspondingly elevated portions to thereby more secure y and completely roll over and unite the 'sole and its edges to the upper. It will beseen that by means of the angular adjustment of the bracket 34-on the bolt 35 and by the'longitudinal sliding movement of the toe block on the bracket 34 the toe block may be readily adjusted to conform to various shapes and sizes of lasts. The position of the last may also be---varied longitudinally with respect to the toe block by mounting itssupporting pins 23 in different sockets 22 on the block 18.

IVhile the invention has been shown as applied to a shoe-pressing machine and is particularly adapted for this purpose, 1t is evident that the last-supporting and elevating mechanism may e used independently for the purpose of supporting a shoe last during the operation of building up a shoe upper thereon, or for other purposes.

by the other support for engaging and pressing the shoe at its vamp.

2. In combination, ya pair of supports, means for adjustingsaid supports axially, means for pivotally mounting a last and accompanying footwear article on one support, means carried bythe other support for engaging the vamp portion of the article, and means whereby said last means may be adjusted either angularly or laterally with respect to its support.

3. In combination, means for support-in a last at the heel and'toe portions, and unitary means for 'adjusting said supporting means in unison or relatively.

4.' In combination, a'shaft, a pair of gears mounted thereon, a second pair of gears operable by said first mentioned gears, supports threadedly connected to said second pair of gears, means for preventing rotation of said supports, means forl pivotally mounting a last on one of said fsupports, a toe block mounted on the other support, and means for angularly or laterally `adjusting said block on its support.

5. In combination, a pair of gears, means for at will actuating one or both gears including a second pair of gears, a pair of supports threadedly connected to said first.

. pair, means forpreventing rotation of said supports, and last supporting means carried by said supports and adjustable for'different size lasts.

Signed at New Haven, county' of New Haven, and State of Connecticut, this 22d day of April, 1921.

a HERBERT R. 1. oLLEYs.

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