US2081940A

US2081940A - Pulling-over machine

Info

Publication number: US2081940A
Application number: US55768A
Authority: US
Inventors: Axel E Lindblad
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1935-12-23
Filing date: 1935-12-23
Publication date: 1937-06-01
Anticipated expiration: 1954-06-01

Description

June l, 1937.

. A. E. LINDBLAD PULLING-OVER MACHINE Filed Dec. 25, 1935 AWM/747@ Mg. M @L wm/ Patented June 1, 1937 UNITEDy STATES 2,081,940 PULLING-ovER'MAoHINE Axel E. Lindblad, Orange, N. J., assigner to United Shoe Machinery Corporation, Paterson, N. J., a corporation of New Jersey Application December 23, 1935, Serial No. 55,768

3 Claims.

This invention relates to machines for pulling uppers over lasts, and more particularly to pullingover machines for use in the manufacture of shoes the uppers of which, at least at the fore- 5 parts of the shoes, are secured in lasted relation to insoles by an adhesive. Heretofore in the manufacture of such shoes it has been the common practice to use pulling-over machines of the same construction as are utilized in the manufacture of shoes of other kinds, these machines having means for driving tacks to fasten the uppers to the insoles. remained permanently in the shoes or have been removed by the operator at some time prior to l5 thecompletion of the lasting operations.

In order to facilitate the manufacture of shoes having no tacks or other drivenupper-holding fastenings in their foreparts, the present invention provides in a pulling-over machine novel means for securing the upper adhesively to the insole. The invention is herein illustrated, by way of example, as applied to a machine organization of the same general character as disclosed in United States Letters Patent No. 1,029,387, granted on June 11, I1912 upon an application of R. F. McFeely, with certain parts constructed as more particularly disclosed in United States LettersA Patent No. 1,381,162, granted on June 14, 19241 upon an application of U. J. Bouchard. In place of the tack drivers operating at the sides' of the forepart of the shoe in such prior machinesthere are provided, for purposes of the present invention, hammers operated by the driver bars to pound the margin of the upper into adher- '3'5 ing relation to the insole, these hammers in the construction shown being arranged to engage the upper throughout the width of its marginal portion overlying the insole and for substantial distances lengthwise of the shoe. Prior to the opera- 40 tionof the hammers the margin of the upper at the sides of the forepart is laid inwardly over the insole by Wipers operated as heretofore, these wipers, however, being shaped to provide the proper recesses to receive the hammers. In additionnto the means thus provided for pounding the upper into adhering relation to the insole at the sides of the forepart, the machine may also have, as shown, means for performing a similar operation at the end of the toe in the location where an end tack has been driven by prior machines.

The above and other features of the invention, including various novel details of construction and combinations of parts, will now be more particularly described by reference to the accompanying 'I'hese tacks have either drawingV and thereafter pointed out in the claims. AIn the drawing,

Fig. 1 is a perspective View of a portion of a machine in which the invention is embodied, illustrating the relation of parts of the machine to the forepart of a shoe after the wiping of the margin of the upper inwardly by the wipers but before the hammers are operated;

Fig. 2 shows substantially in front elevation parts of the machine located at one side of the shoe; and

Fig. 3 shows substantially in side elevation parts located at the end of the toe of the shoe,

In the operation of machines of the illustrated type the shoe is positioned with the bottom of its forepart in engagement with a sole rest 2, and the upper materials (hereinafter referred to as the upper) are pulled over the last by grippers engaging them respectively at the end of the toe and the sides of the forepart, a portion of one ,of the side grippersbeing shown at 4 iny Fig.'2 and a portion of the toe gripper being shown at 6 in Fig. 3. Thereafter the margin of the upper is wiped inwardly over the insole'at the endof the toe and the sides of the forepart, the grippers releasing the upper. For the wiping operation there are provided at each side of the foreparta pair of wipers comprising plates 8 extending laterally of the shoe, and at the end of the toe a wiper l0 extending lengthwise of the shoe. The side wipers 8 are carried by opposite'side arms I2, a portion of one of which is shown in Figs. 1 and 2, these arms being mounted for swinging movements laterally of the lshoe to operate the wipers. The wipers 8 are supported and yieldingly controlled substantially as disclosed in the above-mentioned Letters Patent No. 1,381,162. The inward movements of the side arms I2 are limited by vside clamps I4 which engage the shoe and are themselves engaged by holders it which support the wipers 8 on the side arms, and associated with these side clamps are members kI8A which engage the forepart of the shoe underneath to support it against pressure on its bottom face. The end wiper It is carried by a front arm 2U mounted to swing lengthwise of the shoe, and this wiper is yieldingly controlled as heretofore by a spring-pressed plunger 22 movable upwardly and downwardly in the arm 20. Operative movement of the arm 20 is limited by a stop 24 carried by the arm and arranged to engage the end of the toe of the shoe.

As thus far described, except for the shape of the side Wipers 8, the machine is constructed substantially as heretofore, as disclosed, for example,

in the previously mentioned Letters Patent. For purposes of this invention there are provided, in place of the usual drivers for driving upperfastening tacks at the sides of the forepart of the shoe, hammers 26 comprising metal blocks arranged to pound the margin of the upper down on the insole by a blow thereon so that it is secured to the insole by a suitable adhesive previously applied preferably both to the upper materials and to the insole. Each hammer 26 has a lower ilat face which engages the margin of the upper for a considerable distance lengthwise of the shoe and from the extreme edge of the shoe bottom inwardly throughout the width of the margin of the upper overlying the insole. It is operated by a downwardly and upwardly movable bar 28 which is the same as the tack driver bar of prior machines. On the lower end of the bar 28 is swiveled a block 3l] similarly to the block which in prior machines carries the tack drivers, this block in the construction herein shown having mounted in depending ears 32 at the lower end thereof a pin 34 on which the hammer 26 is mounted for turning movement to permit it to adjust itself to the lateral contour of the shoe bottom. A lug 36 on the hammer eX- tends upwardly between the ears 32 to receive the pin 34 andh-as a iiat upper face engaged by the lower end of a spring-pressed plunger 38 in the block 30 to determine a normal position of the hammer with respect to movement about the pin. It will be understood that to operate the hammer the bar 28 is impelled downwardly by a spring, like the driver bar of prior machines. To provide room for the movement of the hammer the tack holders of prior machines are omitted from a member 40 which in such prior machines carries these holders, and the pair of wiper plates 8, moreover, are so formed as to provide a recess 4l therein to permit the hammer to pass between portions of the plates which are arranged to wipe the margin of the upper inwardly at the front and the rear of the hammer.

Similarly to the construction above described as located at each side of the forepart of the shoe, the machine herein shown is further provided with a hammer 42 arranged to operate in a recess 43 in the end wiper I to pound the margin of the upper throughout its width down on the insole at the end of the toe, this hammer being pivot-ally mounted on a pin 44 carried by the forked lower end 46 of an operating bar 48 corresponding to the end driver bar of prior machines. The hammer 42 is controlled by a spring-pressed plunger Ell similarly to the side hammers 26. It will be understood that the means for thus pounding down the margin of the upper at the end of the toe may be omitted in case it is desired to leave the upper unsecured at the end of the toe until a later stage in the manufacture of the shoe.

From the foregoing description it will be seen that the invention provides in a pulling-over machine means whereby the upper is secured effectively in pulled-over condition, in different spaced locations about the forepart of the shoe,

without the use of any driven fastenings, the eiective adherence of the margin of the upper to the insole being insured by the blows delivered by the vhammers over substantial portions of the area of the margin of the upper. It will be understood that at a later stage in the manufacture of the shoe the remaining portions of the margin of the upper about the forepart of the shoe will be secured adhesively to the insole in the lasting of the shoe.

Having described the invention, what I claim as new and desire to secure by Letters Patent of the United States is:

l. In a pulling-over machine, the combination with means for pulling an upper over a last, of means for securing the margin of the upper adhesively to an insole on the last in a plurality of different spaced locations at the forepart of the shoe while leaving the forepart of the upper unsecured in other locations, said securing means comprising a plurality of hammers arranged to act respectively in said diierent locations and movable heightwise of the shoe into engagement with the margin of the upper to pound it on the insole, each hammer being formed and arranged to engage the upper substantially throughout the width of its margin overlying the insole, and means for wiping the margin of the upper substantially throughout its width inwardly over the insole at both sides of the portion engaged by each hammer.

2. In a pulling-over machine, the combination with means for pulling an upper over a last, of means for securing the margin of the upper adhesively to an insole on the last in a plurality of different spaced locations at the forepart of the shoe while leaving the forepart of the upper unsecured in other locations, said securing means comprising a plurality of hammers -arranged to act respectively in said different locations to pound the margin of the upper on the insole,

and wipers for wiping the margin of the upper inwardly over the insole prior to the operation of the hammers, said wipers having therein recesses to receive the hammers and permit the latter to engage the margin of the upper.

3. In a pulling-over machine, vthe combination with means for pulling an upper over a last, of means for securing the margin of the upper adhesively to an insole on the last in different spaced locations at the opposite sides of the forepart of the shoe, said securing m-eans comprising hammers arranged to act respectively inv said different locations to pound the margin of the upper on the insole and each formed and arranged to engage the upper for substantial distances lengthwise of the shoe and substantially throughout the width of its margin overlyingthe insole, and wipers for wiping the margin of the upper inwardly over the insole prior to the operation of the hammers, said wipers having therein recesses to receive the hammers and having portions arranged to extend across the margin of the upper in locations substantially adjacent to the hammers.

AXEL E. LINDBLAD.