US1725103A

US1725103A - Sole-attaching press

Info

Publication number: US1725103A
Application number: US331050A
Authority: US
Inventors: George M Ray
Original assignee: BANCROFT WALKER Co
Current assignee: BANCROFT WALKER Co
Priority date: 1929-01-08
Filing date: 1929-01-08
Publication date: 1929-08-20
Anticipated expiration: 1946-08-20

Description

Aug'. 20, 1929. G. M. RAY 1,725,103

soLE ATTACHING PRESS Filed Jan- 8, 1929 2 Sheets-Sheet 1 @@QHQIQQQQMQ Au@ 20 1929' G. M. RAY 1,725,103

SOLE ATTACHING PRES S Filed Jan- 8, 1929 2 Sheets-Sheet 2 Patented Aug. zo, 1929..

UNITED STATI-:s

y y y 1,125,103v PATENTA orrlca.

encuen n. an', or, NEWTON emma, nassacnusm'rs, assronon 'ro menen wanna COMPANY, or sourir nos'roN, xassacnusarrs, n coaroaariouor MASSACHUSETTS.

SOLE-ATTAGHIN G Application led January 8, 1989. Serial lo. $31,050.

This invention relates to fluid pressure presses which are primarily employed in adesively connecting the outer soles yof shoes to the uppers thereof.

In the manufacture of `shoes in which leather outer soles are attached by means of an adhesive without other attaching means, it is customary to apply the adhesive to the edge portions of the upper and lining and then last the shoe onto an inner sole,` the lasted in upper usually being secured b tacks or staples until the adhesive sets, a er which they may be removed. By this operation, the upper. portion which extends onto the inner sole is ilattened, so that ordinarily it presents a nearly smooth'surface.- A filler -of felt, or otherv material, the thickness of which is approximately the same as that of the upper and lining portions which are drawn onto the outer sole, is usually placed in the s ace with` in the edge of the upper, so that t e surface vto which the outer sole is applied may be as nearly level as possible, aside from its normal gradual curvature. Consequently.I the ,'whil-e the adhesive sets comprises a iloxx margin portion of the outersole will ordinarily be pressed against a nearly uniforml surface, permitting satisfactory adhesion thruout its entire margin. v

The type of sole press generally employed for holding theA outer sole against the uper diaphragm, or air container, which engages theV outer surface of the sole and has suiiicient fullness and width to enable rassure to be applied to soles of diierent wi ths, not only throughout the entire bottom to the extreme edge ofthe sole, but also to a substantial extent against the side of the shoe, the edge portion of the sole being usually bent thereby slightly upward against the upper.

While this action is desirablein the forepart and shank portion of the shoe, as satisfactory adhesion at the extreme edge ofthe Asole may thus besecured, I have ascertained that, at the heel part, this action tends to press the counter inwardly adjacent the heel seat and thus detract from, or destroy the rounded eliect which isv desired at this point.

It is desirable thathe portion of the sole to which the heel is attached be made Apractically level by' this operation, that is either iiat or slightly convex 'transversal In ressing the sole against bottom of a laste shoe by means of a flexible diaphragm,

plied to the low ortions as to t e higher por-l tions of the sur ace, so that, if there 1s some unevenness inthe surface against which the sole iselpressed, the diaphragm does not tend to lev this unevenness, so that the solo sur face will be correspondingl uneven.

Moreover, the filler. whic -is placed on the inner sole withinthe edge of the lasted in upper is liable to be either too thick or too thin. If it is too thick it is liable to cause a raised portion in the middle of the outer sole and if it is too thin the diaphragm is likely'to press the sole inward at its middle port1on,'so that a concavity isl formed therein, which latter result is particularly undesirable.

'Also any unevenness of the surface to which the sole is adhesively connected tends to detract from the strength of the adhesion if the unevenness is sufficient to hold vthe adjacent portions of the sole out'of contact with the shoe bottoni. i

AThe 'objects of my invention are to provide a sole-pressing device of the character above described, in which all tendency to distort the counter about the heel seat, by the sole pressing operation, will be prevented, and with which lthe action will have a strong tendency to Batten or level the heel seat.

Also to provide a device of this character surface, and decreased pressure will be applied to the abnormally low portions thereof and the effect of a filler which is too thick, or

too thin, or other irregularity will be neu,

tralized to as great an extent as possible.

I accomplis accompanying drawing, in which: I Fig. 1 is a plan view and Fig. 2 a side elevation of a sole press embodying my invention.

Fig. 3 is a longitudinal section thereof at line'3-3 of Fig. l. A

Fig. 4 is a cross section at line 4--4 of Fig. 2.

Fig. 5 is a cross` section at line 6-5 of Fig. 2. FFig. 6 is a cross section at line SW6 of 1. 4 ig. 7 is a detail plan View and 8 is a these objects in the manner hereinafter described and as illustrated in the longitudinal sectional view ci the forepart4V y l in devices of this characteigand com rises a leveling means which I employ.. .l

Asi shown. in, the drawings a! cast metal box 10 is provided, having an vair' Vinlet ligand 5 .outlet 12, and having'. its top.' edge, at each z Teide, shaped to follow' the `general line of the bottom'of'a shoe from. toe toaheel. The top of the box is closed byia diaphragm 11i, ci

Sheetrubber, which is covered.'` with a sheet sIrritable material, Vand both sheets are securely' `amped to the top edge ci the box by a metal strip 16, which 'is bolted thereto, so that an 5,. air tight connection is formed. rlhe dia-A T' rphra m thus formed is made with considerable ullness which is greatest at the toe end.

According to my invention l provide a dat sheet metal plate 18 between the rubber and the leather, said late being of uniform thickness and nearlyanlexible, though capable of lbeing sprung, under some conditions, so that it has a slight curvature.

l The Width of said plate 18 is approximately as great as the average length of the heel seatof a shoe from the back e'nd to the shank Y and the length thereof is somewhat less than'- the distance between the side surfaces interiorly of the box, so that there is a suihcient l portion oi the diaphragm between the ends of the plate and the Apoint when the diaphragm is clamped to permit such up and down movement as may be necessary. rlhe plate 18 is also/located as near the end of the box, which is designed to be used as the heel end, as practicable,.so that the portion of the diaphragm between the end. Wall of the box and the adjacent edge of the diaphragm is suilicient to permit the necessary vertical movement. The portion of the diaphragm which is directly beneath theshoe forepart, when the shoe is placed thereon, with theheel seat restingl over plate 18, is provided-With a series of thin, narrow, resilient strips 19 of sheet metal, lwhich are arranged to extend crosswise of vthe box with their. edgesin close proximity. The length and arrangement of said strips is preferably such that the ends thereof correspend in a general 'Way to the outline of the sole iorepart oi al shoe of the largest size 'which is likely to be operated on, and the arrangement thereoi on the diaphragm is' made to approximate the position of the shoe thereon.. To hold the resilient metal strips 19 in thefrelative positions desired, they are placed between two sheets 29 of thin deaible material, such as thin leather or cloth, said sheets bein oi sucient size to overlap the same, and t ien the sheets are stitched together about each strip close to the edges' thereof, so that each strip lis held in apocltet. As Atime preu pared, the strips may then be placed either between `the rubber and leather diaphragme, as shown, or on top oi the latter,

The means illustrated tor holding the shoe last against the pressing'action oiLthe dia fo'fwstout, but eriblev leather, or other.

hragni is` a form of jack commonly employed ost 22, which is connected to one' en ofthe X and to which a heavy bar 24 is connected `by a pivot 25, and an arm 26, Which'is. con- In attaching the outer sole to a shoe Whichv has been lasted, the surfaces which are to be connected are covered with any suitable adhesive, and the shoe, With the sole in positionl therebeneath, is placed on the diaphragm in 'such a position that the heel-seat is directly over the plate 18, and the fore part over the resilient strips 19, the shoe being preferably held in such a position that the front end of its heel seat is directly over the iront edge of the plate. The jack posts are then placed in position and thebar 24 is locked down. Then a Huid under pressure is admitted to the chamber, forcing the-sole againstthe shoe bottom and cause a .firm adhesion. Under' these conditions the plate 18 will prevent in- Ward bending of the diaphragm at the points Where it engages the heel seat, so that .if the heel-seat is uneven at certain points, the tendagainst which it is pressed thus being reduced or eliminated. lf, however, the heel seat is slightly convex transversely, the plate 18 may be sprung correspondingly, but the general edect is to tend to level the surface oi' the` heelseat, or reduce any unevenness therein.

At the-same time, as the plate 18extends beyond the sides oithe heel seat and is practically inexible, or rigid, it will prevent the diaphragm 'from being pressed against any portion of theside ci the shoe, so as to distort the curvature of the counter, or upper portion closely adjacent the heel seat.

The flexible metal strips 19 have a leveling action on the 'lore part o the shoe bottom' which is similar in many respects to the action incl of plate 18 on the heel seat, as pressure will be applied with the greatest force to the portions, i any, which project above the general level oi the bottom surface to which the sole the middle portion of the sole iorepart iii- Wardly beyond the normal level, by bridging the space between the edges of the inturned upper and causing excess pressure to be aD- ln case ies plied to the latter. The tendency to form a slight concavity in the middle of the sole forepart is thus minimized. The plates i9 thus have an equalizing action by tending to reduce, or eliminate inequalities the surface of the outer sole.

As each strip 19 is relatively narrow as compared with the length of the forepart, and each strip is flexibly connected to the other at its edges, the strips readily conform to the longitudinal curvature of the sole, and, as the strips are readily flexible, they also conform to the shoe bottom transversely and do not prevent the diaphragm from acting to press upward about the sides of the shoe, so as to secure satisfactory adhesion at the edge of the sole.

As the heel seat of the shoe rests on the diaphragm directly over plate 18, and the lifting action of the diaphragm at this point is comparatively slight, the angular position of the toe portion will vary according to the height of the heel which the shoe is designed to carry, so that a shoe designed to carry a high heel Will have its toe portion extend to a higher elevation than one designed to carry a low heel. For this reason extra fullness is provided in the diaphragm at the toe portion, as indicated in Fig. 3, so that a suitable pressure will be applied to the toe end of the sole, even though the shoe is designed for a particularl high heel, the press being also adapte for use in connection with a shoe designed to carry a low heel.l Under some conditions it is desirable to employ the strips 19 held in pockets between the separate sheets 20 on the top side of the diaphragm, so that they may be adjusted on the diaphragm to some extent in relation to the position of the shoe, which is not possible when the strips are secured between the rubber and leather diaphragms,

.but the action thereof is practically the same With either arrangement.

I claim: Y

l. A sole applying device comprisinga iuid tight container having a flexible d iaphragm at one side and means for supplying fluid pressure thereto, means for holding a lasted shoe in position to permit the diaphragm to be pressed against its bottom, and meansfor stilfening a section of the shoe-bottom-engaging portion of the diaphragm to increase the pressure on the elevations and reduce the pressure on the depressions of the surface of the shoe-bottom engaged thereby Without reducing the flexibility of adjacent portions of the diaphragm. s

2. A sole applying device compr1s1ng a fluid tight containery having a flexible d iaphragm at one side and means for supplying fluid pressure thereto, means for holding a lasted shoe in position to permit the diaphra to be pressed against its bottom, and a sti ening plate on asection of the shoe-bottom-engaging portion of the diaphragm, for reducing inequalities of the surfaces With which it is engaged Without impairing the flexibility of the diaphragm about the edges of the plate.

3. A sole applying device comprising a jack for holding a lasted shoe, a flexible diaphragm adapted and arranged to conform to the bottom of a shoe held by said jack, fluid pressure means for forcing the diaphragm against the shoe bottom, and a metal plate interposed between the diaphragm and the shoe bottom and arranged to be engaged with the shoe bottom thruout the width thereof by the pressure of the diaphragm thereagainst, to educe inequalities of the shoe bottom surace.

4. A sole applying device comprising a jack for holdinga lasted shoe, a flexible diaphragm adapted and arranged to conform to the bottom of a shoeheld by said jack, fluid pressure means for forcing the diaphragm against the shoe bottom, and a flat, substantially inflexible plate disposed on the diaphragm in position to be' engaged with the heel seat portion of the shoe bottoni throughout its Width when the diaphragm is pressed against the same.

5. A sole applying device comprising a jack for holding a lasted shoe, a flexible diaphragm adapted and arranged to conform. to the bottom of a shoe held by said jack, fluid pressure means for forcing the diaphragm against the shoe bottom, and a flat, substantially inflexible plate disposed on the diaphragm in'position to be engaged with the heel seat portion of the shoe bottom throughout its area and to extend beyond said por tion at each side thereof, to reduce inequalities in the heel seat surface and to prevent the application of pressure by the diaphragm to the sides of the shoe adjacent said portion.

6. A sole applying device comprising an air chamber having a flexible diaphragm forming the top wall thereof and adapted for engagement with the bottom and adjacent portion of the sides of a lasted shoe and means for holding the lasted shoe against the up- Ward pressure of the diaphragm, and a flat, substantially inflexible plate mounted on said diaphragm directly beneath the heel seat portion of the shoe when held in position thereon, and arranged to extend transversely thereof beyond each side of the shoe at said portion and longitudinally from back to front of said portion.

7 A sole applying device comprising a j ack for holding a lasted shoe, a flexible diaphragm adapted and arranged to conform to the bottom of a shoe held by said jack, fluid pressure means for forcing the diaphragm against the shoe bottom, and flexible stiflening means on the fore-part-engaging portion of the diaphragm arranged to terminate adjacent the outline of said portion for reducing f vedge cof'edge for engine-r adjustment to confor i eej 'he soieG i dille" eoieeppijving device comprising :i

holding e, iested shoe, e. iexihie diepnenginA adopted and arranged to conform to ion iiudinei enrvature oi the' v pho' bottom. oi e shoe heid hyseid jack, Quid :pressure ineens for forcing the diaphragm egeins the shoe hoi-toni, and ieveling ineens yon the oreper; engaging portion of the diephregin comprising e series of flexible inetei strips arranged to extend fnensversely of seid portion Wih their adjacent edges in ciose proximity and their" end portions extending beyond each side of said portion.A

i0. solo applying .deviee comprising e jack for hoiding e iested shoe, e iiexihie diophregm edaped and arranged to coni'orin to die hooom of a shoe heid by seid jack, fluid,

pressure ineens for forcing the diaphragm yegeinsi; the shoe bosoins and ieveiing ineens on the'fore pero engeging portion of the die- Aphregni ooinpiising e series of strips of fienihie sheep instel, endA e fiexibie sheet having a series oiq pockeas for seid strips arranged to" heid the seme Wifbh the side edges of edieeent strips in proximity end form e Hexihie conneoiion between seid edges.,

LL A soie applying device comprising e casing having e iexibie diaphragm closing; one side thereof to provide e duid tight con- Lee-moe teiner to which uid under pressure may he supplied, Ineens for holding e lasted shoe in position to permitJ the diaphragm to be pressed against its bottom, and stifening ineens on e section of the shoe-hottoxni-engeging'poriion of the diaphragm ier reducing the iielibility of seid section. Without reducthe iiexihiiity oi' the portions of ehe diephregni he'tveen seid section and the sides` portion. to conform eo ineqnaiities of the cor-y responding seoion of the shoe-hottoin and to bend to conform 'to he transverse and iongitudinel enrvatures thereof.

13= lisoie applying device Comprising e iiuid tight container having e ieizibie diephragzn at one side and means for suppiying Huid pressuretherezo, ineens for holding e lasted shoe in position to permit the die phregin to be pressed against iis bottom, e substantially inflexible stiening ineens for o secion of the heei-seet-engeging portion of the diaphragm, for causing the diaphragm to have :i levelling action on the heei seat of *die shoe, and e iieXible stiiiening ineens for o. seotion of 'the foreperbengaging portion oi the diaphragm Constructed 'to rednce the cendency of seid section to conform to inequa1ities of the shoe hottoni forepert end o permit the seme to conform to the eurvetnres thereof.

iin testimony whereof, have signed my naine to this specification.,

GEORGE hi RAY.