US2518336A - Apparatus for forming shoes of the prewelted type - Google Patents

Description

' Aug. 8, 1950 H. B. KOCH 2,518,336

APPARATUS FOR FORMING SHOES OF THE PREWELTED TYPE Filed. Sept. 10, 1948 IN V EN TOR.

ATTORAZD Patented Aug. 8, 1950 UNITED STATES PREWELTED TYPE V APPARATUS FOR FORMING SHOES O F THE Harold B. Koch Liti tz, 1 a;

Application September 10, 1948 Serial I.\T 0. i8,5 73

1 Claim. (01. 12-7-3) l This invention relates. to apparatus for form-= ing shoes of the pre-welted type.

The instant invention is more particularly concerned with certain improvements on the shoeforming apparatus disclosed in U. S. Patent No.

2,164,989, issued July 4, 1939, and of which the I present applicant is a joint inventor.

The apparatus according to said patent is essentially adapted to support a pre-welted shoe in a lasting position, and wherein the sole portion of the shoe is caused to assume an outwardly convex form. Such convex formation is effected by a pair of heel and side wipers disposed at one side of an adjustably supported last and a pair of toe and side wipers disposed at the opposite side of the last. The wipers are supported for movement toward and from the last, and treadleoperated means are provided for effecting such movement of the wipers.

The wipers comprise fiat plates provided with outwardly convex flanges on their edges opposing the last in operative position of the wipers, and such convex flanges are adapted for engagement between the shoe upper and the attached welt to provide the referred to outwardly convex form of the sole portion.

While the apparatus according to said patent has proven efficient in the forming of pre-welted shoes, it has been found that the toe wipers, due to their construction and movement toward and from the last, subject the shoe to a possibility of being scuffed in the lasting process, as well as the possibility of the formation of a lip in the shoe substance where the wipers meet. Said toe wipers also failed to uniformly draw the upper in around the toe of the shoe, as is necessary to effect easier and better lasting operations.

It is accordingly a primary object of this invention to provide a toe wiper construction for use as in said patent, whereby the above noted objections are satisfactorily overcome.

A further object of the invention is to provide a pair of toe wipers having outwardly convex shoeengaging flanges, together with a plate secured to one wiper and adjustably connected with the other wiper, and such plate extending over said flanges in conformity therewith and functioning to prevent scufling of the shoe as well as a more effective pulling in of the upper at the toe of the shoe durin a lasting operation.

Other objects and advantages will become apparent in the course of the following detailed description taken in connection with the accompanying drawing, wherein Figure 1 is a top plan view of the apparatus of said'patent andfshowing' the improvement according to the present invention associated there- Fig. 2 is a broken vertical sectional view in the plane of line 2-Z onFig 1.

'Fig. 3 is atop plan view'of the pair of toe wipers showing the improvement according to the present invention and-with the wipers in separate-dreiation. I

' Fig. 4 is an edgeviewof-the wipers in Fig. 3 as observed in the direction of the arrow 4.

The apparatus as disclosed in said patent will now be described to such extent only as will render the present invention clear.

F designates a frame for Supporting the wipers and actuating means therefor as well as the last-supporting means.

A standard I0 is engaged by a screw H which, in turn, is threadedly engaged with a hand wheel l2 for effecting vertical movement of the screw. The screw H is provided with a spindle 13 which supports a last L for vertical movement relative to the opposite side plates l4 which are secured to the frame by bolts l5.

The apparatus includes a pair of heel wipers Hi and I6 and a pair of toe wipers I1 and i1, and each of the wipers is provided with an aperture [8 through which extends a bolt l9 which extends into a block 29, and the heads of the bolts preferably engage washer plates 2 l The wipers are each provided with apertures 22 and 23 through which extend a bolt 26 and stud 25, respectively, and such bolt and stud extend through guide slots in the plates M, as is clearly disclosed in said patent, for guiding the movement of the wipers toward and from the last L.

Movement of the wipers is effected by means of blocks 26 on the lower ends of bolts 24, to which are connected links 21 whose opposite ends are connected to levers 28 in turn engaged by pedaloperated members 29.

In the use of this apparatus, as is fully disclosed in said patent, the wipers l6, l6 and H, H are positioned away from the last until a shoe with upper U and attached welt W are assembled on the last L, after which the wipers are moved toward the last with the wiper flanges engaged between the upper U and welt W for drawing the upper and welt over the last and toward the insole I supported on the last.

In the operation of moving the wiper plates toward the last as in said patent, the toe wipers in their approach toward each other tend to form a lip in the shoe substance and also fail. to effectively draw the upper around the toe of the shoe.

This objection to the prior construction is overcome by the present invention in the provision of a relatively small thin plate 30 which has one end thereof rigidly connected to one toe wiper plate, as by means of rivets 3|. The plate extends over the other toe wiper plate and is provided with an elongated slot 32 engaged by a headed pin 33 rigid with said other wiper plate, thereby providing for relative movement of the wiper plates while spanning the space between same at all times.

As will be clear from Fig, 4, the plate 30 has a 7 portion thereof upwardly convex, as at 30, in

conformity with the adjacent convex flanges on the wiper plates.

.with a preferred structural embodiment thereof,

what I claim and desire'to secure by U. S. Letters Patent is:

In apparatus for use in the manufacture of pre-welted shoes including a frame, a last support mounted on the frame, wiper plates including a pair of tee wiper plates supported by the frame, and means carried by the frame for moving the plates toward and away from the.

last support, said plates each being provided with an outwardly convex flange on an edge thereof for engaging a shoe supported by a last on the last support between the upper and Welt thereof; the improvement which comprises a, thin elongated plate disposed upon the upper faces of the toe wiper plates adjacent the flanges thereof, said plate having one end thereof lapping one of said wiper plates and rigidly secured thereto, the plate spanning the joint between the wiper plates at the toe end edges thereof and extending over the other wiper plate, an elongated slot in said plate, a headed pin carried by said other wiper plate and extending through said slot, and said plate having a portion thereof engaged with said outwardly convex flanges on both toe wiper plates in conformity therewith.

HAROLD B. KOCH.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS

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