US2160377A - Manufacture of sandals - Google Patents

Description

May 30, 1939. w BAlN 2,160,377

MANUFACTURE OF SANDALS Filed Oct. 12, 1937 2 Sheets-Sheet 1 lflv mloz" 42 J9 X; May 30, 1939. I w. H. BAIN 2,160,377

MANUFACTURE OF SANDALS Filed Oct. 12, 1937 2 Sheets-Sheet 2 [nvenior Z/fia... 7% 6M Patented May 30,1939 2,160,377

UNITED-STATES PATENT OFFICE 2,160,377 MANUFACTURE OF SANDALS William Henry Bain, Lewiston, Maine Application October 12, 1937, Serial No. 168,616 5 Claims. 12-442) This invention consists in a novel 'method of employed with good advantage, all as shown in manufacturing sandals of improved construction the accompanying drawings in which, and attractive appearance, embodying also an Figs. 1 to 4 are fragmentary views in perspecinsole of new and improved construction. The tive of four insoles having somewhat different 5 invention also includes within its scope the novel characteristics and all being adapted to be em-' 5 strap sandal herein shown as produced by the bodied in the sandal of my invention, and method of my invention. Fig. 5 is a view in perspective of the shank and In the manufacture of'strap sandals as heretoforepart of a sandal made with an insole of still fore carried out, much difficulty has been endifferent characteristics.

countered in securely attaching the strap ends The characteristic common to all the insoles 10 in the sandal bottom without the necessity for herein illustrated is the reinforcing sheet which exterwive hand fitting work on the part of an covers the last-engaging face thereof and which pert shoemaker. This is particularly t ue is adapted to be stripped from the insole, after where it is desired to secure the strap ends in the last has been removed. The sandal straps are flush surface relation to the surface of the insole temporarily attached to the reinforced body of 15 beneath the foot of the wearer. Difliculty has the insole, by being edge notched into it or otheralso been encountered in so treating the edge of wise, and may be held in assembled position the insole that it shall present an attractive thereon partly through the medium of the reinfinish and not show a raw edge where it is visible forcing sheet and then, upon the removal of the between the straps along the sides of the sandal. latter, the straps may be conveniently reached 20 he present invention aims to obviate these and fastened permanently to the outsole or other difiiculties and to improve the manufacture of parts of th d l b tt sandal in o her imp rt nt pe s- F r The insole shown in Fig. 1, comprises a. blank ample, t plat s the e pl ym nt f an In extending for the full length of the sole and insol h v n a t mp rar ly tach d r in r n formed of insole leather or any composition com- 25 sheet, such as thin tough fibre, which may be monly used for such purposes. The blank I0 is made up as a p Of t o e ether With skeletonized in the forepal't, having a large aperh r ps as a st k fi tin perati n so h t it ture H therein, and is reinforced throughout its comes to the shoemaker as a unit ready to be forepart by a sheet l2 of fibre or the like which is placed p the last. The reinforcing sheet is temporarily secured thereto in substantially flush 30 arranged 80 that it y be r pped f m t e edge relation and so as to constitute the lastlasted sandal after the last has been pulled and engaging face of the insole. The blank i0 is also in the meantime it serves to reinforce the insole provided with a series of rectangular edge notches during the Shoemakihg processes, to permit the i3 which, in this case, extend entirely through use of alight or skeletonized insole and cooperates th m In and so expose t reinforcing h t in p d g a secure attachment of the sandal l2, just as it is exposed through the aperture ll. straps y fur s ng ir tly a rfa e f r As herein shown the whole forepart of the blank tachment or by reinforcing the portion of the H) is reduced by boiling or otherwise back to insole to which the st aps are connected. substantially the ball line and the rear edge of A o y er ta e the p ythe reinforcing sheet I2 extends rearwardly of 4p ment of a reinf rc n he f his h r cter p the ball line, as indicated by the dotted lines in mits a binding tape to be secured to the marginal Fig. 1, edges of the insole in a continuous manner and Having prepared th ins le a ab e lain d so as to e tend ac ss notches Provided for the and located the edge notches [3 in accordance reception of the S p d Under Such c with the style of the sandal desired, sandal straps 45 stances the reinforcing sheet supplies a surface M are assembled with the insole by having one to which each of the strap ends may be cemented end of each cemented into the notches l3, in this independently o e b nd and us o v te case being temporarily secured to the reinforcing any displacement of the binding which might sheet l2, which forms the bottom of the notches,

h ve u red during the h m in processes and to the walls of the notches. The insole with 50 These and other features of the invention will its straps thus assembled in flush surface relation be best understood and appreciated from the is now ready to be conformed to the last bottom following description of several insoles embodyand secured thereto with its reinforcing sheet I 2 ing the invention and a preferred form of strap next to the last.

sandal in which the said novel insoles may be The insole shown in Fig. 2 is similar to that 55 above described in many respects. It includes the blank which has a large aperture 2| in its forepart and which extends for the full length of the insoles In this case the blank is not reduced in the forepart but is stlfl'ened in the shank portion by a shank piece and a metallic stiffener 23. The forepart of the blank is provided with rectangular edge notches 23 but these do not extend completely through the blank as before. Instead a thin portion of the blank is retained to serve as a bottom for the notches. A reinforcing sheet 22 covers the lower face of the insole, as seen in Fig. 2, and this is exposed through the aperture 2!. It underlies the notches 23 but is not visible at these points. The sandal straps 24 are-assembled with the insole by having one end of each cemented into the notches 23 in substantially flush surface relation, and the insole thus made ready for use.

The insole shown in Fig. 3 includes the blank 30, which in this case, may be assumed to be of a fibrous composition and is not skeletonized in its forepart but is solid except for its rectangular edge notches 33. In this case the entire margin of the blank is provided with a textile binding tape 31, folded about its edge and held in place by a line of stitching. It will be noted that binding 3| extends continuously across the open ends of the notches 33, bridging them as it were. The shank portion of the insole is stiffened and given body by a shank piece 35 secured thereto in the usual manner, and the forepart is reinforced by a thin tough fibre sheet 32 which is exposed through the notches 33 within the binding 3|. Sandal straps 34 are cemented in the notches 33 and thus attached to the binding 3! as well as the face of the reinforcing sheet 32,

The insole shown in Fig. 4 has no edge notches but comprises an open blank 40 of textile ma-' terial, such as duck, died out or otherwise fashioned somewhat like a rand and outlining the forepart of the insole. The blank is reinforced by a fibre sheet 4| and permanently attached at its rear end to a shank piece 42. Sandal straps 33 are cemented to the face of the blank 40 in locations predetermined for the style of sandal to be made.

In using any one of the four insoles above described in the manufacture of a sandal of the general type shown in Fig. 5, the insole with its assembled straps is first tacked to the last bottom with the reinforcing sheet next to the last. The insole H in Fig. 5 is edge notched to receive the straps and is provided with the reinforcing sheet 35 which in Fig. 5 is represented as having served its function, and as being partially stripped from the insole. The insole unit of Fig. 5 includes a metallic shank stiffener l3 and sole piece 43 having a textile binding about its margin and extending approximately from the ball line to the heel seat. While the insole is on the last the straps 46 are drawn over the last, cut to length and secured at their free ends in the appropriate edge notches. The outsole 41 is also conformed to the sandal bottom and permanently secured in place as by cementing. During all the operations the strap ends are strongly but temporarily held in place by their attachment to the reinforcing sheet itself or to the insole material in close proximity to the reinforcing sheet. When the last has been pulled, however. there is no longer any strain upon the straps and no danger of displacing them by stripping oif the reinforcing sheet as suggested in Fig. 5. This operation uncovers the strap ends, presenting them in convenient reach to be permanently secured by fasteners, such as staples l3, driven through the straps and clenched in the outsole 41. Thus the manufacturing strains are taken care of by providing the removable reinforcing sheet and the strains in wear are taken care of by the permanent fasteners inserted when the reinforcing sheet is removed.

Having thus described my invention, what I claim is new and desire to secure by United States Letters Patent is,-

1. A method of making sandals, which consists in assembling on a last bottom an insole blank having straps located in edge notches therein and covered by a relatively thin reinforcing sheet and an outsole; and then, after removing the last and stripping off the reinforcing sheet and attaching the strap ends to the underlying outsole.

2. A method of making sandals, which consists in securing sandal straps in edge notches in an insole blank having a relatively thin reinforcing sheet upon its last-engaging face, and after removing the sandal from the last stripping the reinforcing sheet to expose the strap ends and securing them to an underlying outsole.

3. A method of making sandals, hich consists in cutting spaced notches in the marginal edges of an insole blank, temporarily attaching a thin reinforcing sheet to the face of the blank so as to underlie said notches, locating sandal straps in the notches, conforming the insole with its straps to a last bottom, attaching an outsole, stripping the reinforcing sheet after removing the last, thus exposing the strap ends, and then permanently securing them to the outsole.

4. A method of making sandals, which consists in cutting spaced notches in the marginal edges of an insole blank, edge binding the blank across the open ends of the notches, temporarily attaching a thin reinforcing sheet to the face of the blank, locating sandal straps in the notches above said reinforcing. sheet and binding, placing the insole upon a last bottom with the reinforcing sheet innermost, attaching an outsole, removing the last, stripping off the reinforcing sheet, thus exposing the inner ends of the straps. and then permanently securing them to the outsole.

5. In the manufacture of sandals the steps of edge notching an insole, cementing a thin cover sheet to one surface of said insole below the notches, cementing to said cover sheet the free ends of straps disposed in said notches, securing an outsole to the surface of the insole opposite said cover sheet, stripping off said cover sheet, and attaching the straps to said outsole by inserting fasteners in the ends of the straps in the notches.

WILLIAM HENRY BAIN.

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