US2390633A - Sole roughing tool - Google Patents

Description

Dec. 11 194-5. w, ANDE I 2,390,633

SOLE ROUGHING TOOL Filed Jan. 1s, 194s I I I, ,2 f5

Patented Dec. 11, 1945 William Scott Anderson signor to Penn-Standa ess, Inc., Delaware 3 Claims.

This invention relates to leather roughening tools and more specifically to a tool for rougheningthe margins of shoe soles,

In the repairing-of shoes it is general practice to remove the worn outsole from the shoe upper andthen apply anew outsole to the upper with a suitable cement. To repairshoes in this manner, it isimperative that the new outsolebe properly roughened around its entire margin, in order that the leather fibers are loosened to provide an anchorage for the cement.

Heretofore, sole roughening tools have been available to shoe repairers. However, such tools have had'serious shortcomings which make use thereof hazardous as, unless extreme care is taken, the repairers hand holding the sole during-the roughening operation is liable to be lacerated by the sharp roughing spikes and, if the tool is drawn acrossthe avoid such in-jury,-the handling thereof is an unnatural motion for the repairers arm, thus the operation becomes tiresome and often results in portions of the shoe sole margin being improperly roughened and, in some places, unroughened portions are left which result in an insecure bond of the outsole to the shoe upper. Often the unroughened portion breaks away from the upper allowing dirt and grit to enter between the upper and sole which finally cuts the remaining cement bond so that the shoe has to be prematurely again repaired.

A general object of this invention is to provide a sole roughening tool of improved construction which, is simple, efiicient to operate, and is economical to manufacture.

Another object of this invention is to provide a sole roughening tool having a handle so positioned to allow proper and complete roughening of a sole without danger to the user thereof.

A further object of this invention is to provide a sole roughening tool having a roughing strap secured to an arcuate face so that regardless of the are which the users arm describes some of the roughing spikes will always be in contact with the sole.

A still further object of this invention is to provide improved means for clamping a roughing strap to a sole roughening tool.

Other objects of this invention will in part be obvious and will, in part, appear hereinafter.

The invention accordingly comprises the features of construction, combination of elements, and arrangements of parts which will be exemplified in the construction hereinafter set forth sole in a manner to Philadelphia, Pa., asrd Sole Cementing Proc- Philadelphia, Pa., 'a corporation of Application January 13, 1945, Serial No. 572,726

and the scope of theinventionwill be indicated in the claims.

v For a fuller understanding of the nature and objects of the invention, reference should be had to the following detailed description, taken in connection with the accompanying drawingm'n which:

Fig. 1 is a plan view of a sole roughening tool constructed in accordance with tl e principles of this invention, and showing its application to the roughening of an outsole;

Fig. 2 is a side elevation partly in section and taken along lines 2-2 of Fig. 1; and

Fig. 3 is a transverse sectional view taken along lines 33 of Fig. 1, 7

Referring to the drawing, there is shown a sole roughening tool comprising a unitary casting I B, one end of which terminates in an arcuate holder H having a groove I2 formed in its convex face [3 and extending around one end of the holder and part way along its upper concave face The groove I2 is narrower than the width of the holder II thus leaving the vertical walls I 5 and I5 which serve to laterally confine a roughing strap ll of card cloth or the like.

The roughing strap 11 is secured to the holder by the clamp plates I 8 and I 9 which are tensioned toward the holder by the screws 20 and 2|.

Each end of the slot I2 is formed deeper than the portion extending along the convex face I 3 in order to allow the clamp plates l8 and I9 to be flush with the general contour of the: holder.

Extending from the bottom of the groove l2 at each end thereof and directl under the clamp plates are the tines 22 which penetrate the unspiked portions of the roughing strap I! when the clamp plates are tightened.

The other end of the casting It) forms a handle 23 which extends from the holder H and, as shown in Fig. 1, forms an acute angle with the roughing strap receiving groove l2.

In using the above described tool, the sole S is rested on a suitable bench and the tool is re ciprocated across the sole margin in a direction as shown by the arrows in Fig. 1.

It is natural for a person to stand in front of the work. Thus, the hand used to reciprocate the tool is offset with respect to the work. This constitutes no impediment when using the tool of this invention as the handle 23 being at an angle to the roughing strap holder compensates for the users arm being offset and allows the tool to be reciprocated with the natural movement of the arm which is at an angle to the margin of the shoe sole, and the roughing strap is not in line with the users other hand serving to hold and turn the sole as it is being roughened.

Furthermore, as the roughing strap is clamped to an arcuate holder some of the roughing spikes are always in contact with the sole regardless of the arc the users arm describes during reciprocation of the tool.

When the spikes in the roughing strap I! have become dull and worn the clamps I8 and H) are removed and a, new strap is secured to the holder I l by first securing it with the clamp l8 and then stretching the strap around the curved end of the holder and securing the other end of the strap by the clamp 19. 7

It is apparent that this improved tool will prevent injuries to the hands of the shoe repairers which often occurred when using straight handled tools with the roughing spikes on a flat plane, 1. e., similar to a file card which had to be drawn acrossa sole-at an oblique angle to the margin and therefore had to be reciprocated in line with the users hand holding the sole.

Itis also apparent, that as the roughing strap holderv l I is offset at an angle with respect to the handle 23, the tool is drawn across the margin of the sole at'an acute angle and at each reciprocation of the tool the roughing spikes will cover more area Thus, the possibility of leaving unroughened portions is minimized which results in less returned shoes.

Sincecertain changes mayv be'made in the above construction and different embodiments'of the invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown i th empan i drawing s l b interpreted as illustrative and not in a limiting e ser 3 fng described my invention what I claim as newanddesire tosecure by Letters Patent is:

1. A leather roughening tool comprising an arcuate holder having a roughing strap receiving groove formed therein extending the full length of its lCOIlVGX side and around one end thereof and along a portion of its concave side, a handle formed integral with said holder, said handle being at an acute angle to said strap receiving groove, a leather roughing strap in said groove and extending the full length thereof, and means, including clamp plates confined within said groove and lying substantially flush with the contour of'said holder, clamping each end of said roughing strap to said holder.

2, A leather roughening tool comprising an arcuate'holderhaving a roughing strap receiving groove formed therein extending the full length of its convex side and around one end thereof and along a, portion-oi its concave side, a handle formed integral with said holder, said handle being at an acute angle to said strap receiving groove; tines projecting from said holder at each end of, said strap receiving groove, 'a leather roughing strap in said groove and extending the full length thereof, and means, including clampplates confined'with n s id ro v a d l in su stantially flushv withthe contour of said holder, clamping each end of said strap against said tines,

13'. A leather rqu hening tool comprising an 7 arcuate holder having a roughing strap receiving groove formed therein extending along its con-- vex face, a handle extending from said holder at an acute angle to said strap receiving groove, a leather roughing strap within said groove, clamp plates fitting within said groove for securing said roughing strap to said holder, said roughing strap a receiving groove being :dee'per at portions occupied by said clamp plates than at other portions, whereby said roughing strap will be deformed by said clamp plates and the clamp plates willbe 1 flush with the contourof said holder.

SCOTT ANDERSON,

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