US1601334A - Shoe-trimming machine - Google Patents

Description

' Filed March 12, 1926 2 Sheets-Sheet 2 Patented Sept. 28, 1926.

UNITED STATES JOSEPH YANNUZZ, OF READING, PENNSYLVANIA.

SHOE-TRIMIYIING MACHINE.

Application filed March 12, 1926.

This invention relates to improvements in shoe trimming machines and it pertains more particularly to machines used in shoe repairing shops, and in which shoes of all sizes and shapes are handled.

The object in my present invention is to provide a machine in which a plurality of trimming cutters or tools are operatively mounted on a single machine, to the end that one of the trimmers will be applicable to the work about to be performed.

The invention contemplates a machine with a power shaft and a plurality of driven shafts adapted each to carry a trimming cutter, and means for throwing any one of these driven shafts into operable position, that is, into frictional contact with the driving Or power shaft, so that the desired trimming cutter is quickly put into action.

The invention is more fully described in the following specification and clearly illustrated in the accompanying drawing, in which Figure 1 is a front elevation of my machine, showing one of the cutter shafts in frictional engagement with the power shaft.

Figure 2 is an end elevational view thereof.

Figure 3 is a central vertical section of the machine.

Figure 4 is a view taken on line fir-4 of Figure 3. V

Figure 5 is an enlarged section on lin 5-5 of Fig. 3.

The numeral 1 designates a pair of supports in which the entire mechanism is mounted. The numeral 2 designates a power shaft, rotatable in bearings 3 in the supports and provided with a cone-shaped driving pulley 5, a belt pulley 6 and a power belt 7. This shaft also carries a sharpening device on its one extremity, in the form of a stone or emery disc, 9.

In the supports 1, and surrounding the aentrally mounted driving or power shaft 2, I locate a plurality of horizontally slidable cutter shafts 10. In the drawing I have shown eight of these shafts, but the number may be varied.

Each of these longitudinally slidable shaftsare provided with a cone-shaped enlargement 12, capable of frictionally engag ing the surface of the cone-shaped pulley 5, each is mounted in bearings in the supports 1 and capable of being easily slid therein Serial No. 94,287.

from side to side, and each is formed with an annular depression 15 near one end there of, While the housing of the support 1 is formed with a series of sleeves 16, the open ings through these sleeves registering with the depressions 15 in the shafts and in each of these openings I place a spring backed ball 18, adapted to .rest in the depression and allow the shaft to rotate, but to hold the shaft against horizontal movement.

When one of the trimmer cutters is desired for use, the shaft 10 on the end of which the trimmer is mounted, is moved to the left, until the ball 18 engages the depression 15, at which time the cone 12 will be in contact with the pulley 5 and the rotation of the power shaft will be transmitted to the trimmer cutter on the end of the shaft 10.

When the shaft 10 is no longer wanted in operative position, it is moved tothe right manually, the ball being moved against the spring back of it and allowing the shaft to be slid to neutral, position, and another shaft 10 may be moved into engagement with the power shaft.

It is evident that in this construction, various trimmer cutters may be located on the one machine, and, when the operator requires any one of them, it will not be necessary, as has been the case heretofore, to remove the cutter being. used and replace it with another, but merely to slide the one shaft back and another forward.

The numeral 20 designates a cutter holder adapted to hold a cutter 14. while being sharpened by contact with the stone 9. This holder is mounted on the upright 1 and the cutter when in position therein, will be in position to be sharpened or ground thereby.

It may be found advisable in some cases to bring the cutter immediately in front of the operator, and in such cases, the shafts 10 may be mounted in rotatable supports surrounding the central power shaft, so that the entire group may be rotated until'the desired cutter is in the forward position, when the shaft on which it is mounted is shifted as described.

Having thus fully described my invention, what I claim and desire to secure by Letters Patent is v 1. In a shoe trimming machine, a power shaft, a cone shaped friction pulley thereon, a plurality of trimmer shafts each of which is formed with a cone-shaped portion adapted for frictional contact with the pulley, said trimmer shafts being slid ably mounted for manual operation into and out of engagement with the power shaft, and spring means for holding the trimmer shafts in position against horizontal movement while in engagement with the power shaft.

2. In a shoe trimming machine, a pair of uprights, a central power shaft mounted therein, a plurality of horizontally slidable trimmer shafts surrounding said power shaft, a pulley on the power shaft, a coneshaped enlargement on each trimmer shaft capable of frictional engagement with said pulley and a spring backed ball contacting with each trimmer shaft to hold it in positron against horizontal movement.

3. In a shoe trimming machine, a power shaft having a cone shaped pulley thereon. a plurality of horizontally slidable trimmer shafts, each having a cone-shaped enlargement thereon and mounted for engagement friotionally with the said pulley, a trimmer carried on the one end of each trimmer shaft, a'depression in the opposite end of the shaft, and a spring backed ball adapted to engage said depression when the shaft is in engagement with the power shaft and hold it against horizontal movement.

In testimony whereof I afiix my signature,

JOSEPH YANNUZZ.

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