US2068157A - Fore part roughing machine for shoes - Google Patents

Description

Jari. 19,1937. 4 A. "r; TEM PESTA I 5 FORE PART ROUGHING MACHINE FOR SHOES Filed March 10, 1934 INVEN To B,

Arthur T Tm red'la.

Patented Jan. 19, 1937 UNITED STATES PATENT OFFICE FORE. PART ROUGHING MACHINE FOR SHOES Arthur '1. Tempesta, Lewiston, Maine, assignor, by direct and mesne assignments, to Compo Shoe Machinery Corporation, Boston, Mass, a corporation of Delaware Application March 10, 1934, Serial No. 714,952

4 Claims. (01. 69-1) This invention relates to upper roughing mashowing portions of the gauge member and porchines for use in the manufacture of cemented tions of the guard and a fragmentary view of shoes. the roughing wheel acting on the overlasted Heretofore the most Widely practised method margin of the shoe upper;

.. of doing this work was to hold the shoe against Fig. 7 is an elevation of the guard, gauge and. .5 an upstanding guard through which projected wheel, with a shoe shown abutting on the wheel;

a portion of a revolving wire brush wheel, the Fig. 8 is a section on line 8-8, Fig. '7, showabrading effect of the wheel causing the leather ing a tapered overlapping portion after being tobe reduced to the proper thickness and bringacted on by the wheel;

ing it into a condition best suited to receive the Fig. 9 shows the gauge lower than in Fig. 8, 10 glue or cement by which the outer sole is semaking a substantially even thickness overlapcured to the shoe. ping part;

The difficulty experienced by the ordinary Figs. 10, 11, 12, 13 and 14 show various forms workman in operating by this method resides in of gauge elements, and

. the lack of a proper and positive guiding ele- Fig. 15 shows a modification in the form of 15 ment which would prevent his lowering the shoe the guard. to such an extent that the wire brush wheel Referring to the drawing, I, l, represent the makescontact'with the upper above the inturned supporting legs of a roughing machine having lasting allowance, often causing serious damage bearings 2, 2 in which is journalled the revoluble to the shoe. shaft 3, the latter being driven by any suitable 20 In my present invention I provide an element means, as by the pulley 4. against which the edge of the shoe abuts and Mounted on one end of the shaft 3 is a wire across which it is drawn while the wire brush brush wheel 5 encased in a hood 6 which is sewheel is acting on the overlapping part to bring cured in any convenient manner to the side of it to the desired thickness and roughness. one of the supporting legs. 25

The gauge is adapted to be raised or lowered On the front side of the hood is mounted an on the guard so that various different presentupstanding guard member made in the form of ments of the shoe to the brush may be obtained, a plate I, having slots 8 through which pass, re-

. and a greater or lessor amount of material spectively, .the attaching bolts 9 which may be r. abraded. It enables the workman to procure a anchored to casing 6 or to a suitable standard uniformity in the roughened surface and presupported directly from the machine frame. The vents injury to the shoe which might otherwise slots 8 provide for lateral adjustment of the occur. guard with respect to the wire brush wheel. Other objects of the invention will in part be A shoulder or flange 8a is cast with and projects obvious and will in part appear hereinafter. rearwardly from the guard plate I. This should- 35 The invention accordingly comprises the feaer is adapted to seat on the lower wall of the tures of construction, combination of elements, casing, and may preferably be of less width than and arran m n of pa ts, whi h will be the casing in order to permit the lateral adjustemplified in the construction hereinafter set melll', provided by slots 8. forth and the Scope of the pp of w ich An aperture ll] permits the wire brush wheel 40 40 will be indicated in the claims. 5 to project through the guard a short distance,

For a fuller understanding of the nature and. the latter varying according as the guard is adobjects of the invention reference should be had justed toward r from the wheel by the attachto the following detailed description taken in ing bolts 9. connection Wi h t e c p ny n d aw n n The guard has a slide-way H within which is 45 which: disposed at stop gauge 12. The gauge is pro- 1 S On a reduced Scale, a Simple form vided with an oblong slot 13 through which the of roughing machine, and bolt it passes to secure the gauge to the guard. Fig, 2 an end elevation thereof; By relaxing the bolt M the gauge may be adi 3 s an elevation of th guard m justed on the guard to any position desired to 50 Fig. 4 is an elevation of the face of one form bring the shoe, abutting on the gauge, to the. of the gauge element; proper angle of presentment to the wire brush Fig. 5 is a side elevation of the gauge shown wheel. in Fig. 4; In Fig. 4 I illustrate one of the simplest forms Fig, 6 is a section on line 6-6, Fig. 7, the view of my gauge element. It comprises a block 55 Cal portion lZa from which depend two legs i212. The lower end of the block portion is tapered and the apex or gauge point :20 is positioned midway the two legs, but outwardly therefrom, as shown in side view in Fig. 5.

The inner side of each of these legs, at a, is brought to a comparatively thin edge, and laterally thereof each leg, preferably, is convex on its outer face.

These edges contact the lasting allowance Ua. of the upper U, and extend entirely across the bottom of the shoe, so that together with gauge point He, they control the position and plane of the shoe bottom with respect to the roughing Wheel. Thus, during the roughing operation, the; upper, which is supported by the last L, may be held by the operator in full line contact against the edges a, which latter, being quite closely spaced, insure a very accurately and uniformly scarified surface.

By observing Fig. 6 it will be noted that the shoe-contacting edges a. of the legs extend for a considerable distance outwardly from the face of the guard I. This enables the workman to grasp the shoe to better advantage than if they were nearer in line with the face of the guard member.

The uppers of certain types of shoes varies from others in thickness and in certain other requirements, which variance necessitates repositioning the gauge, vertically, on the guard.

In some cases the lasting allowance is scarified in such a manner that what is left is substantially V-shape, as shown in Fig. 8. In this instance the gauge is set so that the wire wheel abrades the leather more deeply on the inner edge of the overlapping portion than on its outer part, causing the desired feathering of the lasting allowance.

In Fig. 9 the gauge is shown lowered on the guard. This brings the lasting allowance of the upper substantially on the axial line of the wire brush wheel, and an abrasion is made which leaves this part of the upper of very nearly an even thickness.

Thus, by raising or lowering the gauge I2, various shapes in cross section of the overlapping portion are obtainable, the guard I being suitably adjusted away from the work contacting surface of the rougher at the time gauge !2 is lowered.

Various modifications in the form of the gauge l2 are possible. In Fig. 10 the gauge point is? made rotatable by employing a roll against which the side of the shoe abuts as it is moved transversely of the legs l2b.

Figs. 12 and 13 show for the leg structure rolls l2d mounted on studs 126. In this design rotating contact of both legs and gauge point is provided.

In Fig. 14 a somewhat more pronounced departure from the structure shown in Fig. 7, with respect to the leg design, is illustrated. In this instance the shoe-contacting surfaces of the legs is inclined with respect to the face of the guard l. The particular purpose to which this design might be put is when it is desired to scarify the lasting allowance very close to the side of the shoe, or where the inturned lasting allowance joins the sides of the upper.

Fig. 11 shows the gauge as a flat, straight surface.

By observation of Fig. 7 a clear understanding of the method of performing the roughening operation may'be had. The shoe is held in the operators two hands, kept with an upward pressure against the gauge point at 120 while drawing it across the legs I2b.

It is, of course, obvious that should the positions of the parts be reversed, that is, the guard with the gauge mounted thereon exactly as seen in Fig. 7, but turned upside down, and the direction of rotation of the wire brush wheel reversed from that shown in Figs. 8 and 9, the result, insofar as the roughening process is. concerned, would be carried out and accom plished in the same manner as with the parts arranged as shown. However, the method illustratively disclosed seems preferable for the reason that the workman can better observe the work as it is being done.

It is possible to construct the guard member I of an arcuate shape in side View, as shown in Fig. 15.

In this instance the portion of the wire brush wheel which projects beyond the legs I2b, describes, in side elevation, a somewhat flattened crescent shape, and the wheel, in operation, is not so liable to gra the overlapping portions of the leather upper and pull the shoe out of the workmans hands than would be the case were the guard member made straight and not? equipped with a gauge l2.

While for convenience of description, the roughing tool has herein been described and illustrated as a wire brush wheel, it is to be understood that the invention is not limited to the use of such a wheel and that provision of any suitable or desired form of roughing wheel is contemplated, whether or not it be of the wire brush type.

A roughing machine with my improvement incorporated therein enables a workman to scarify the overlapping portions of a greater number of shoes than he is capable of doing when using conventional methods, in a days work.

Losses, sometimes quite considerable, suffered by the manufacture through negligence of the workman, or due to the physical impossibility of always holding the shoe against the wheel in the correct and exact position to prevent roughing the surface too far up the sides of the shoe, is practically eliminated by the use of my gauge device. And, although this defect in the shoe may not appear when the shoe is new, after being worn and stretched it cannot be concealed, thus the demand of the customer to have it replaced by a perfect one is generally forthcoming.

By reason of the fact that with my gauge a tangible means is provided for guiding the shoe during the roughing operation, a workman is relieved of the strain and is required to give less strict attention to keeping the shoe within bounds than obtains with most other methods of doing this work.

What I claim is:

1. An upper roughing machine comprising a rotatable roughing wheel, a casing for said wheel having an open front, a guard covering such open portion of said casing and having a guide groove in its forward face, said guard having an opening located in said groove through which part of the periphery of said wheel extends, and a gauge having an outwardly extending shoulder for engaging the side of a lasted upper and a pair of straight spaced arms extending forwardly beyond said shoulder for engaging entirely across the bottom of a lasted uppensaid gauge being fastened in said guide groove with its arms located at either side of said opening.-

2. An upper roughing machine comprising a rotatable roughing wheel, a casing for said wheel, a guard covering the front portion of said casing, said guard having an opening therein through which part of the periphery of said wheel extends, a gauge having an outwardly extending shoulder for engaging the side of a lasted upper and a pair of straight spaced arms extending forwardly beyond said shoulder for engaging entirely across the bottom of a lasted upper, said gauge being normally fixed to said guard with its arms located at either side of said opening.

3. An upper roughing machine comprising a rotatable roughing wheel, a guard plate located in front of said wheel and having a guide groove in its forward face, there being an opening in said groove through which a peripheral portion of said Wheel extends, and a gauge in said groove, said gauge having a forwardly projecting shoulder overhanging one end of said opening and a pair of spaced arms extending forwardly of said shoulder, said arms being fitted in said groove at either side of said opening and being shaped so as to extend outwardly beyond the front face of said guard plate a distance at least suflicient to permit reception of the fingers of an operator between the front face of the guard plate and the plane of the top edges of said arms.

4. In an upper roughing machine, a gauge member comprising a body portion having an outwardly projecting shoulder for engaging the side of a lasted upper and having straight spaced arms extending forwardly of said shoulder for engaging the bottom of a lasted upper, said arms being provided with elongate anti-friction rollers, engageable entirely across the bottom of said upper, and a roughing wheel having its roughing periphery extending between and slightly beyond said spaced arms.

ARTHUR T. TEMPESTA.

Images