US2185638A - Upper roughing machine - Google Patents

Description

Jan. 2, 1940.

- E. J. LE GAULT UPPER ROUGHING MACHINE Filed Aug. 11, 1957 fm/em or f 1 M mix/WW g Patented Jan. 2, 1940 UNITED STATES UPPER ROUGHING MACHINE Elzear J. Le Gault, Haverhill, Mass, assignor, by direct and, mesne assignments, to Bestco Shoe Machinery Inc.,' Ipswich, Mass, a corporation of Massachusetts Application'August 11, 1937, Serial No. 158,483

3 Claims.

This invention relates to machines for roughing the over-lasted margins of shoe uppers to prepare them for a subsequent cementing operation. In the manufacture of cemented shoes it has been found that the cement will not form a permanent bond with the surface of the upper unless the latter isroughened to some degree. This is especially so when glazed leather is used for upper material. r

The machines which have been used for rough ing uppers have proved unsatisfactory in that many times the operator presents the shoe to the machine in such a way that the roughing roll mars that surface of the upper which has not 15 been lasted over. In other words, when the shoe is finished there is an exposed scar which may render it unsaleable or at least require a repairing operation.

In one aspect the present invention consists in a roughing machine of compact and convenient arrangement having abrading tools or rolls of different contour adapted for operating upon different parts of a lasted shoe bottom, for example the concave shank and the flat forepart, and being so arranged that the operator may present the shoe conveniently and practically in a continuous motion from one roll to the other. The roughing machine of my invention has therefore the capacity for a high rate of production 30 and the abrading operation may be carried out upon different parts of the shoe bottom accurately in the desired size and without liability of damaging the shoe.

This invention envisages an adjustable work gauge to be mounted in front of a forepart roughing roll, and an important feature of the invention consists in an apertured plate through which an arc of the roughing roll protrudes, the length of the are being determined by the position of the work gauge. Another object of the invention is to prevent injuries by placing the work gauge between the operator and the roughing roll so that it may serve the function of a guard, with the result that the greater portion of the roughing roll is covered. I

A further feature of the invention consists in a housing having hinged plates on either end of 50 the machine so that access to the roughing rolls may easily be had.

These and other features and advantages of the invention will be more easily understood from the'following description of. a preferred embodiment thereof, selected for purposes of illustration and shown in the accompanying drawing, in which:

Fig. 1 is a view in front elevation of the machine;

Fig. 2 is a view in cross-section taken along line 5 2-2 of Fig. l; and

Fig. 3 is a view in cross-section taken along line 3--3 of Fig. l.

Bolted to a suitable base it is a casting H which carries bearings for a horizontal shaft I2. The shaft 62 is driven by a belt connecting the pulley it to any suitable source of power.

A small roll M is keyed on the shaft I2 at one of its ends. This roll it is provided with a radial wire brush it: and is adapted by the convex contour of its surface for roughing the over-lasted margin of the upper in the concave shank portions of the shoe. Also bolted to the base if! is a dust shield or hood it having a connection to a suction duct ii. The dust shield Iii substantially surrounds the roughing roll M.

In order that access to the roughing roll [4 may be had, a plate i8 is provided in the side of the dust hood l6, hinged at l9 and secured at the top by a thumbscrew 20, At the opposite end of the shaft l2 a forepart roughing roll 2! is carried. This forepart roughing roll 2| is similar to the shank roughing roll It, although it is larger in every dimension and has a relatively wide, flat peripheral surface. Siu'rounding the forepart roughing roll 2| is a second dust hood 22 which is connected to suction duct 23.

A gauge plate 24. shown as having a centrally located substantially square aperture is mounted in front of the forepart roughing roll 2i. Horizontal rods 25 and 26 extend at right angles to the plate 24. These rods 25 and 26 pass into holes in bosses upon the sides of the dust hood 22 and may be adjustably secured in place by thumb screws 21. The two rods 25 are mounted near the bottom of the plate 24, the rod 26 being located at the top.

The central aperture in the gauge plate 24 is arranged to admit a portion of the periphery of the roughing roll 2i, and by loosening the thumb screws 21 it is possible to move the plate 24 in and out until the desired portion of the roughing roll 2| extends through the aperture.

The outer end of the dust hood 22 is provided with a plate 28 hinged at 29 and provided with a retaining spring clip 30. By releasing the spring clip 30, it is possible to swing down the plate 28 and expose the end ofv the shaft l2 and the forepart roughing roll 2| for purposes of replacement or repair.

The plate 24 offers a fiat gauging surface against which the operator can place the bottom of the forepart of the shoe. By bringing the fiat bottom of the shoe into engagement with the fiat face of the plate 24 and then moving the shoe while held in this relation, the operation of the abrading roll 2| is defined and limited to the flat areas of the over-lasted margin, to the exclusion of theside walls of the upper. Furthermore, the plate 24 prevents the operator from thrusting his hands into engagement with the wheel 2i and thus receiving injuries.

It is important to note that by controlling the size of the segment of the roll 2! which protrudes through the gauge plate 2| a greater or lesser degree of roughing can be obtained. On relatively delicate upper material it is desirable not to subject the leather to harsh treatment,

and, by permitting only short lengths of the wire,

brush to protrude, the roughing is more delicate and the leather is not seriously weakened.

Those skilled in the art will immediately perceive many possible changes and adaptations in the invention as shown and described, but such variations are incorporated in the scope of the invention and do not depart therefrom.

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

1. In a roughing machine comprising a forepart roughing roll and a dust hood surrounding said wheel, apertured lugs disposed on said dust hood, an adjustable gauge consisting of a centrally apertured plate, adjusting rods carried on said plate, said rods being dimensioned to enter the apertures in said lugs, and thumb screws disposed on said dust hood for clamping said adjusting rods in position.

2. In a roughing machine comprising a forc part roughing wheel and a dust hood surrounding said wheel, an adjustable gauge consisting of a rectangular plate having a centrally locat-.' a

ed, rectangular aperture, supporting and adjusting rods carried by said plate, means carried on said hood for receiving the rods, and thumb screws disposed on said hood and cooperating with said means to secure said rods, movement of said plate permitting a greater or lesser portion ofsaid roughingroll to be exposed through said aperture.

3. An upper roughing machine comprising a shaft, a roughing roll carried on saidshaft, a

dust hood surrounding said roughing roll and having apertured lugs secured thereto, a centrally apertured gauge plate, a plurality of supporting and adjusting rods projecting rearwardly from said gauge plate, and means for clamping said rods in said apertured lugs whereby said gauge plate is adjustably held before said roughing roll.

' ELZEAR J. LE GAULT.

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