US1271638A - Trimming machine. - Google Patents

Description

F. H. WARREN.

' TRIMMING MACHINE.

APPUCATION FILED'NOV. 6. 1915.

Patented July 9, 1918.

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TRIMMING MACHINE.

APPLICATION FILED NOV. 6. I915.

Patented July 9, 1918.

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FRANK H. WARREN, OF SWAMPSCOTT, MASSACHUSETTS, ASSIGNOR, BY MESNE ASSIGN- MENTS, T UNITED SHOE MACHINERY CORPORATION, OF PATERSON, NEW JERSEY,

A CORPORATION OF NEW JERSEY.

TRIMMIN G-MACHINE.

' To all whom it may concern:

edge.

Be it known that I. FRANK H. VARREN,

a citizen of the United States. residing at Swampscott, in the county of Essex and State of Massachusetts, have invented certain Improvements in Trimming-Machines, of which the following description. in connection with the'accompanying drawings. is a. specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to trimming machines for use in the manufacture of boots and shoes and particularly to machines for trimming or randing the upper surface of the sole or welt of a shoe adjacent to its The invent-ion is herein shown as embodied in a machine. particularly adapted for operating upon portions of the stock at or adjacent to the heel seat, but it should be understood that the invention is not thus restricted in its application and that machines embodying the novel features of the invention may likewise be used upon other portions of the sole or welt.

In the operation of trimming heels. particularly upon thenbetter grades of shoes. it is the usual practice first to trim around the side of the heel from one breast corner to the other and then to subject the heel portion of the shoe to the operation of a finishing cutter which simultaneously bevels or rands the upper surface of the sole around the heel seat and operates upon the edge of the sole or portions of the heel adjacent to the heel seat so as to leave a sharply defined edge at the margin of the heel seat. For the best results it is found to be advantagee-us, prior to. the operation of the final randing or finishing cutter to make a cut along the margin of the upper surface of ssole so as to pro *ide a more o n crease wee-n the sole and upper the adssion of the ianding cutter. Leis opera- /n has be the usual practice her tofore erform lo the use I" Q bove d scribed preliminary randing cp- Specification of Letters Patent.

Serial No. 60,116.

eration upon a shoe. To this end an important feature of the invention consists in the combination with a cutter suitably formed for operating upon the margin of a sole at the heel seat, of a novel construction and arrangement of mechanism for guiding the shoe as the latter is presented to the cutter and for protecting the upper from injury during the trimming operation. The construction herein shown includes. in combination with the cutter, a shield arranged for engagement in the rand crease to protect the upper from contact with the cutter and determine the position of the shoe longitudinally of the cutter axis. and means for protecting the surfaceof the upper from injury through rubbing contact with the shield. In the construction shown the upper protecting means serves also as a guide to determine the inward extent or depth of the cut as well as to limit the extentof projection of the shield into the rand crease and in order to insure that the upper shall not be injured by rubbing contact with-the guide. as well as to facilitate the turning of the shoe. the guide in this construction comprises a wheel arranged to be turned by contact with the shoe.

It is a further important object of this invention to provide means suitable for use in the shank of a welt shoe for trimming the end of the welt so as to aline the crease in the shank with the rand crease at the heel seat. Since the crease is deeper in the shank than it is around the heel. it is desirable in performing'this operation at the welt end to trim farther inward or deeper in the crease than when trimming around the heel seat. This invention accor-clingly provides engaging guide arranged to yield to the curt to permit the depth to be varied either for trimming or in case t desired to make 1 t l us other of construction r parts, will Patented July 9., 19118.

I the claims.

In the drawings: 1 Figure 1 is a view in front elevation of the head portion of a machine in which the invention is embodied,

Fig. 2 is a plan view of a portion of the mechanism-shown in Fig. 1 detached,

Fig. 3 is a View of a port-ion of the medianism in side elevation, and

Fig. l is a view in section on the line 44 of Fig. 3.

Mounted for rotation in bearings in the frame 2 of the machine is a shaft lto the outer end of which is secured by means of a screw 6 a cutter 8, this cutter having a beveled or conical end face next to. the shaft provided with cutting edges adapted for randing the heel seat of a shoe or for beveling or randing other portionsof the projecting margin of the sole or welt. Mounted upon the frame above the shaft is a bracket 10 to the outer end of which is secured a shield 12 in one side of which, as shown by dotted lines in Fig.' 1, is formed a slight depression to receive the larger end of the cutter 8 and a central recess to receive the head of the screw 6. The lower end of the shield, as shown in Fig. 4, is curved in substantially concentric relation to the axis of the cutter, and is thus adapted to enter freely any portion of the crease between the upper and the sole of a shoe so as to determine the position of the shoe longitudinally of the axis of the cutter and protect the upper from contact with the cutter. The bracket 10 should be so adjusted as to position the shield in very close relation to the cutter, and to this end the bracket is provided with a slot 14; to permit it to be adjusted longitudinally relatively to a clamping screw 16 which-is threaded in the frame 2. In order to maintain the bracket in parallel relation to the shaft 4 in all positions of its adjust ment, so as to insure that the shield 12 shall be positioned in parallel relation to the end of the cutter, the frame 2'is provided with a slideway 18 in which the bracket is mounted. Accurate adjustment of the bracket may be effected by means of a screw 20, one end ofwhich is seated in a bearing 22 on the frame while the other end is threaded for engagement in a threaded bore 24 in the bracket. After the bracket has been adjusted by means of the screw 20., it may be retained in adjusted position by tightening the screw 16. A set screw 26 is arranged to engage the screw 20 to afford additional security against change in the adjustment.

Secured by means of screws 28 to the outer end of the bracket 10, in such manner as to clamp the shield 12 in place, is a plate 30 provided with a guideway in which slide 32 is vertically movable. The plate 30 and the shield 12 are further maintained in their proper positions on the bracket 10 by plates 33 secured to the sidesof the bracket and overlapping the edges of the plate 30 and the shield. Mounted upon the lower end of the slide 32 is a wheel 34 the hub portion of which, as shown in Fig. 4, has a bearing in the slide and is formed with a threaded bore to receive a screw 36 which serves .to retain the wheel in position. The wheel 34 has a transverse peripheral contour approximating the vertical contour of the upper of vided with a slot 38 to permit it to move vertically relatively to the 'screws 28, and the upper screw 28 serves by engagement with the slide at the end of the slot to'determine the limit of downward movement of the slide; The slide is yieldingly'maintained at its lower limit of movement by means of a spring 40 positioned in a socket in a'lug 42 on the bracket 10 and bearing at its upper end against a screw 44 whereby its tensionmay be adjusted.

In using the machine above perform the preliminary trimming opera tion around the heel seat prior to the opera-' tion of the final randing or finishing cutter,

the shoe is positioned as shown in Fig. 1 with the shield 12 in the rand crease and the guide 34 in engagement with the upper. As the shoe is turned to transfer the point of operation of the cutter along the work,

the upper is maintained by the operator lightly in contact with the guide 34 which maintains its position in substantially concentric relation to the cutter and thus prevents the shield 12 from rubbing the surface of the upper. The guide 34, at the same time, is turned by contact ,with the shoe and thus facilitates the movement of the shoe without injuring the surface of the upper. It will be apparent also that by limiting the extent of projection of the shield into the rand crease, the guide 34'prevents the shield from wedging into the crease in a such manner as to oppose the turning movement of the shoe.

Should it be desired to trim in the shank to even the crease line adjacent to the end of the welt, or if for any reason it should be desired to make a deeper cut around the heel seat than is permitted by the normal position of the guide 3 1, sufficient pressure is described to i into the crease:

for engagement 1n applied through the shoe to the guide to force back the slide 32 and thus permit the shield 12 and the cutter to project farther Having described the invention, what I claim as new and desire to secure by Letters Patent of the United States is I 1. In a machine of the class described, the combination with a randing cutter, of a shield positioned'at the end of thecutter for the crease between the upper and means arranged shield to protect the from injury through engagement in and the sole of a shoe, with reference to said surface of the upper contact withthe shield, said means comprising a wheel arranged to be rotated by contact with the upper..

2. In a machine of the class described, the combination with a randing cutter, of ,a shield positioned at the end of the cutter the crease between the upper and the sole of a shoe, and a Wheel arranged to roll on the upper to guide the shoe, saidwheel being positioned with its periphery adjacent to the edge of the shield to protect the surfaceof the upper from injury through contact with the shield and havin a transverse eri heral contour 0011- formable approximately to the vertical con' tour.of the upper adjacent to the rand crease.

3. In a machine of the class described, the

combination with a randing cutter, of a shield positioned at the end of 'thecutter in the crease. between the upper an and having a curved edge for engagement d the sole of a shoe, and a wheel-arranged to engage and roll on the upper to guide the shoe, said wheel havingits periphery curved insubstantial conformity to the curve of said edge and positioned adjacent to saidedge to protect the surface of the upper. from injury through .contact with the shield.

4.111 a machine of the classdescribed,

the combination with a randing cutter, of

means for guiding the shoe in its presentation to the'cutter, said means comprisin a wheel arranged to engage theupper of fhe shoe and to yield under pressure of the shoe to permit the depth of the cut to be varied.

In a machine of the class described,

the combination with a ra-nding cutter, of a stationary shleld positioned with reference to said cutter to engage the shoe in the rand crease, and a guide arranged to engage the upper ofthe shoe to limit the ex tent of projection of said shleld. into the comprising a the rand crease, said guide being arranged to yield under the pressure of the shoe to permit the depth of the cut to be varied.

' 6. In a machine of the class described, the combination with a randing cutter, of a shield positioned with reference to said cutter to engagethe shoe in the rand crease,

and a guide arranged toengage the upper of the shoe to limit the extent of projection of said shield into the rand crease, said guide comprising a 'wheel, arranged to be rotated by contact with the shoe and to yield under the pressure of the shoe to permit the depth of the cut tobe varied.

' 7. In a machine of the class described, the combination With a rotary cutter, of a shield positioned at the end of the cutter for engagement in the crease between the upper and the sole of a'shoeyand a guide arranged the upper to l mit the extent of' shield positioned at theend of the, cutter for engagement in the crease between the upper and the sole of a shoe, an edge curved in substantially concentric relation to the cutter, a guide arranged to,

engage the upper of the shoe, said guide .wheel of substantially the same radius as the curve of said shield and arranged to rotate as the workis fed past it, and meansfor positioning the guide normally with its peripheral edge adjacent to the curved edge of the shield.

said shield having" 9. In a machine of the class described,

the combination with a rotary cutter, of a shield positioned at the end of the cutter -for engagement in the crease betweenthe upper and the sole of a shoe,.a support mounted for movement in a plane substantially parallel to the'plane of said shield, a guide mounted for rotation on said support and "arranged to engage the upper of the shoe adjacent to" the shield, and-a springarranged to position said support normally with the edge of the guide adjacent to the edge of theshield and to yield under pressure of the shoe to -permit the depth" of the cut tobe varied. i v v 'In testimony whereof I havesigned my name to this specification. FRANK H. WARREN.

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