US1996890A

US1996890A - Manufacture of shoes

Info

Publication number: US1996890A
Application number: US724654A
Authority: US
Inventors: Chester D Turner
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1934-05-09
Filing date: 1934-05-09
Publication date: 1935-04-09
Anticipated expiration: 1952-04-09

Description

April. 9, l1935. c. D. TURNER 1,996,890

MANUFACTURE OF SHOES Filed May' 9, 1954 Patentes Apr.' 9, 1935 j ...unirse 4sllrrlazs4 .PATENT A.OFFICE s, isuserlal No. 114,654 L commistione-145) This -invention relates to the' manufacture of shoes, and more particularly to the fastening of shoe uppers adhesively in lasted relation to insoles or other shoe bottom parts (hereinafter fre- 5, quently referred to generically as soles). The inv ention isherein illustrated by reference to the lasting of the toe endsoi shoes of a type in which the margiof the upper inlastd position lies in generally parallel relation to theY bottom of the 10. last; but it is to,be understood that it is not limited to the manufacture of shoes of that type nor to the lasting of the toe endsof shoes.

' An object of the invention is to-provide amethodwhereby adhesive may be utilized to fasten up- 1l pers in lasted position with a saving of time in the lasting operation as compared with methods heretofore commonly in use, and. without such inconveniences as maybe involved in the use of l liquid adhesive, including the necessity for care 9&0 to insure that the adhesive shall be applied uniformly and in'proper quantity and that none of it shall contact with a part of the shoe where its presence wouldl be' objectionable. To this and other ends.. there 'is herein -disclosed a novel 25.' method whereby a-piece of adhesive sheetmaterial, including a normally tacky or non-drying adheaivemch as to require no treatment to put ithiconditiontoadheretoapartpressed against it, is utilised for fastening uppers in the lasting 30. operation.

or compositions, I have obtained successful results with what is known commercially as Scotch tape, which has been extensively used heretofore in 35. shoe manufacture for reinforcing parts of uppers andl fol other purposes. Such tape. .as used in shoe manufacture, commonly comprises a sheet or strip of. tough p'aperprovided `withainor'm'ally 'tacky adhesive on both sides thereof, but'having 4Q a. protective cover of paper over the adhesive on one 'me adhesive may be, for example, of the character disclosed'in IettersvPatent No.

1,814,132, granted' on July 14, 19'31 upon an appli'- 'cation of Richard G. Drew. It is contemplated 4H that in the practice or the methodof this mven.-

.55 themanufactureoftheshoewhenthemarginof AWhile the method may be practiced by theuseofadhesive sheetm'aterialofvariouskindsthe upper is to be fastened in lasted relation to theA sole, whereupon it will'be removed to expose the adhesive( This may be done by simply pulling the cover o ii the adhesive. In the lasting of the toe of a shoe, for example, in this manner the protective cover will prevent the upper materials fromy adhering to the sole during the earlier stages of the lasting operation, including the wiping` of the margin ofthe materials one ormore times in wardly over the sole'be'fore trimming away-the l0 margin of one or more of the layers of the vma.-

teri'als as is customary in lasting toes with adhesive. 'It is contemplated that it will be preferableunder moet conditions to apply the adhesive piece to the able, although it my be applied to is i the upper instead, if desired.

The novel method will now be more particularly described by reference to the accompanying drawing and thereafter pointed out in the claims.

In the drawing, 20 Fig. 1 is a perspective view of 'the forepart of an insole showing an adhesive piece or strip appliedto the toe'end thereof for` purposes of this invention: Fig.`2 is asectiofn on the lineII--l of Fig. 1 25 onanenlargedscale;

Fig. 3 is a perspective view illustrating how the margin of the toe kend portion of the upper'materials may be wiped inwardly over the insole in a bed-lasting machine while the protective cover is on the adhesive strip;

Fig. 4 is a sectional view of the toe end' of the last and the shoe materials at that stage in the lasting operation represented by Fig'. 3;

Fig. 5 isa perspective view illustrating the re- 35 moval of l the Aprotective cover from the adhesive strip after the margin of the lining and toe box havebeen trimmed away around the toe;

ff Fig. 6 is a view similar to Fig. 4,.il1ustratix igthe wiping of the margin of the upper into final lasted 40 position over the adhesive strip after the cover has been removed from the strip;

Fig. 'l isa perspective view of the forepart of an insole having on the toe end thereof an adhesive piece of different shape from that shown in Fig. l; and

Fig. 8 illustrates how an adhesive strip may be applied to thel outer layer of the toe end o f ythe upper materials instead of to the insole.

In accordance with one mode of procedure in v practicingthe method of this invention, there will becut from Scotch tape, for example, a substantially U-shaped adhesive strip l0 to overlie the margin of the toe end of an insole over which the margin of the upper is to be lasted, and the Vto strip will be applied to the toe end of the insole I2 as illustrated in Fig. 1. As previously explained, such tape has a protective cover I4 over the adhesive on one side thereof, and when the sin'ip prepared as described is applied to the insole, this cover will lie at the outer side of the strip. It will be understood thatV the normally tacky adhesive on the other side of the strip will fasten the strip rmly to the insole when it is pressed against the insole without the necessity for any preliminary treatment oi the adhesive. After insoles have been prepared in this manner they may be stacked or handled freely without any danger of adhering to one another, by reason of the'presence of the protective cover on each adhesivevstrip. Such an insole` will ybe a lastand the upper will be assembled on the last in the usual manner, after which the customary pulling-over operation may be performed. Thereafter the shoe may be lasted along thesides-in anyl suitable well-known manner, the drawing showing a shoe in which the upper is fastened in lasted position along the sides by staples I6 (Figs. 3 and 5) driven as disclosed in Letters Patent No. 1,815,296, granted on July 21, 1931- upon an application of George Goddu. After the sidelasting operation the shoe is placedvin a bedlasting machine and in the use of this machine the margin ofthe upper materials around the toe is wiped inwardly over the insole by the toe wipers I8 with which such machines are provided, as illustrated in Figs. 3 and 4. As shown 'in the drawing, the upper materials comprise an outer layer 20 which may be of leather, a middle layer Il consisting of a toe box, and an inner layer 24 consisting of a lining. It will be understood that the number of such layers may vary in shoes of vdiiferent kinds or styles. The margins of all the layers of thev upper materials are wiped inwardly over the insole at that stage in the lasting operation represented by Figs. 3 and 4, and after one usual practice, trims away the margin of each layer of the upper materials around the'toe except the outer layer 20 so that the layers thus trimmed will overlap the bottom face of the insole -cmly to a very small extent. 'Ihe shoe.being now rea for the margin of the outer layer to be wiped inwardlyrov'er the insole into'ilna'lly lasted position, the operator removes the protective cover I4 from the adhesive strip by pulling it oi! the adhesive v26 on the strip, as illustrated in Fig. 5, thus exposing theadhesive.- 'Ihe wipers Il are then.

again advanced and closed to wipe the margin of the upper over the insole and are operated in the usualniannertopressthemargin downuponthe insole, in which operation the adhesive l strip is immediately effective to fasten the upper i'mly tothe'insole (Fig. 6). The wipers may then be at once withdrawn from over the shoe since continued pressure on the margin of the upper is unnecessary. Y

Instead of using an adhesive piece or strip III of the form illustrated in Fig. l, a piece 2l of the form shown in Fig. 'I may be utilized, thispiece having, like the strip I0, an edge contour cor-- responding to that of the edge of the toe end of the insole, but extending entirely across the insole from side to side. "If desired, moreover, in-

stead of applying an adhesive piece to the insole, such a piece may be applied to the upper,

erably be applied at a tim'e before the upper is assembled on the last. With the stripthus applied to the upper, the margins'of. the several rlayers of the upper materials will be wiped inwardly over the insole in the same manner as hereinbefore described, the cover on the adhesive strip at this time preventing the margins of the two outer layers of the materials from being fastened together by Vthe adhesive. 'Ihe protective cover will thereafter be removed from the strip at the same stage in the lasting operation as illustrated by Fig. 5, and when the margin of the upper is thereafter wiped into ilnally lasted position the adhesive strip thereon will fasten it to the insole, the margins of the two inner layers of` the upper materials having bee trimmed away as described. Y

From the foregoing descriptionit dent that the invention provides a. method whereby uppers may be conveniently secured in lasted position by the use of adhesive with a substantial saving of time on the part of the lasting machine operator as compared with methods heretofore inuse, since all that the operator has to do to render the adhesive effective is to removevthe protective cover I4 from the adhesive piece or strip and since there is no need to maintain pressure on the margin of the upper'forany substantial length of time afterr wiping it vinto final lasted position. By this method, moreover,

the care required in applying liquid adhesive is eliminated, and also the danger of applying an excess ofadhesive or of applying it on parts of the shoe where its presence would be objectionable.v y' V f n While the invention is herein illustratedby reference to the uso of -an adhesivepieceor strip y havingadhesiveonbothsidestbereofanda 4protective cover onions side, it is to beunderstood that itis'not limited to theuse of a strip having adhesive on the side thereof next to the parttowhichthestripisfirstappliedsince the stripmay be secured totbat part otherwise than by means of adhesive on the strip. v

Having described the invention, what I claim as new and desire to secure by Letters Patent of theUnitedBtatesis: l n 4 1. 'I'hat improvement in methods of making shoes which consists in applying toone of tht parts of a shoe, for fasteningvthe shoe upper adhesively in lasted relation to a sole, a piece of adhesive sheet material having on the opposite side thereof from the part to which the piece is thus applied a normally tackyl adhesive protected by a cover, and before laying the marginal portion of the upper in nally lasted relation to the sole removing said protective cover to expose the adhesive.

2. That improvement in methods of -making shoes which lconsists in applying in adhering relation to one of the parts of a shoe, for fastening the shoe upper adhesively in lasted relation to a sole, a piece of adhesivesheet material having a normally tacky adhesive on both its sides and a protective cover over the adhesiveron the opposite side thereof from the part to which the 75 :,osasoo piece is thus applied, and before laying the marginal portion of the upper in iinally lasted relation to the sole removing said protective cover to expose the adhesive.

3. That improvement in methods of making shoes which consists in applying to an end of a sole a piece of adhesive sheet material having on the opposite side thereof from the sole a normally tacky adhesive and a protective cover over the adhesive, laying the margin of an end of an upper preliminarily inward over that portion of the sole where said piece is located while said cover is in place, thereafter releasing the margin of the upper and removing the cover from the piece of adhesive material, and after the removal of the cover laying the margin of the upper again inward over the sole and pressing it against the adhesive.

4. That improvement in methods of making shoes which consists in applying in adhering relation to the toe end of a sole an adhesive strip having a normally tacky adhesive on both its sides and a protective cover over the adhesive on the opposite side thereof from the sole, wiping the margin of the toe-end portion of upper materials inwardly over the strip on the sole while said cover is in place. thereafter releasing the margin of the upper materials and trimmingthe margin of one or more of the layers of the materials around the toe, removing the cover from the adhesive strip, and after the removal of the cover wiping the margin of the upper which remains after the trimming again inward over the sole and pressing it against the adhesive strip.'

5. That improvement in methods of ummm;`

shoes which consists in applying to the margin of an upper an adhesive strip having on the opposite side thereof from the upper a normally tacky adhesive and a protective cover over the adhesive, laying the margin of the upper preliminarily inward overy a sole while said cover is in place, thereafter releasing the margin of the upper and removing the cover from the adhesive strip, and after the removal of the cover laying the margin of the upper again inward over the sole and pressing it into position for the adhesive strip to fasten it to the sole.

6. That improvement in methods of making shoes which consists in applying in adhering relation to the margin of the outer layer of the toe-end portion of upper materials an adhesive vstrip having a normally tacky adhesive on.I both its sides and a protective cover over the adhesive on the opposite side thereof from said layer, wiping the margin of the toe-end portion of the upper materials inwardly over a sole while said cover is in place, thereafter releasing the margin of the upper materials and trimming the margin of all but the outer layer around the toe, removing the cover from the adhesive strip, and after the removal of the cover wiping the margin of the outer layer to which said strip is applied again inwardly over the sole and pressing it into position to be fastened to the soie by'said strip.

CHESTER D. TURNER;y