US1383297A - Edge-trimming machine - Google Patents

Description

E. GODIEN.

EDGE TRIMMING MACHINE.

APPLICATION FILED JULY 20. 1920.

Patented July 5, 1921.

2 SHEETS-SHEET l.

E. GODIEN.

EDGE TRIMMING MACHINE.

APPLICATION FILED JULY 20. 1920.

Patented July 5, 1921.

2 SHEETS-SHEET 2 Ephraim Godien sww fm.

EPHRATM GODIEN, OF MARLBORO, MASSACHUSETTS, ASSIGNOR OF TWENTY PER CENT. TO EXISTE BOUTHILLETTE,

OF MARLBORO, MASSACHUSETTS.

EDGE-TRHVEMING MACHINE.

Specification of Letters Extent.

Patented July 5, 1921.

Application filed July 20, 1920. 'Serial No. 397,650.

T 0 all whom it may concern Be it known that I, EPI-IRAIM GonmN, a citizen of the United States, residing at Marlboro, in the county of Middlesex State of Massachusetts, have invented a new and useful Edge-Trimming Machine, of which the following is a specification.

This invention relates to a machine for finishing the edge trimming operation on a boot or shoe.

The principal objects of the invention are to provide a simple, practical, and effective mechanical device for trimming the edge of the sole up to the breast of the heel from the point at which the ordinary rotary edge trimmer ceases to operate; and to provide for efliciently cutting down in the plane of the heel breast the piece of leather thus trimmed off. More specifically, the invention involves the provision of means for effectively locating or guiding the shoe dur ing the operation of the machine. This guiding is effected by a gage which enters the crease between the sole and the upper, a stop that is adjustable and engages the side of the heel, and a fixed stop for engaging the breast of the heel, thus thoroughly fixing the position of the shoe with respect to the cutter so that all shoes will be operated upon alike.

Another feature of the invention consists in the arrangement of the mechanism by which the several operations are performed in such a way as to provide a double ma chine, having a right and left side designed to operate continuously so that itwill notbe necessary to stop the machine or to select the shoes as to rights and lefts before operation. The mechanism provides a convenient construction by which the ordinary rotary edge trimming knife and the rotary cutter for trimming the heel seat can be mounted in convenient position in respect. to the mechanism above referred to, and an important feature of theinvention consists in such relative arrangement of these cutters and the edge trimming means that the shoe can be manufactured without loss of time. Further objects and advantages of the invention will appear hereinafter.

Reference is to be had tothe accompanying drawings, in whicl1- 4 Figure 1 is a front elevation of a machine and line 53 of constructed in accordance with this invention;

Fig. 2 is a plan of the driving shaft; F 1g. 3 1s a sectional view taken along the Fig. 4 011 enlarged scale; and F 4 is an end elevation of the machine, showing the operating parts only.

The machine is shown as comprising a base 10 on which are mounted standards 11 having bearings for the main driving'shaft 12. This .18 operated from a pulley 13 or in any other desired way. It is provided with two pulleys 14 and 15 which by means of belts, drive two pulleys 16 and 1'? respectively on shafts 1S and 19. On the shaft 18 there is a rotary cutter 20 of well known type for trimming the heel seat and on the shaft 19 there is a cutter 21 of the rotary type for trimming the edge of the sole. These two shafts l8 and 19 are mounted on a standard 22 which is bolted to or formed as a part of a bracket 23 which constitutes one of a pair, one being located on each end of the top of the base 10. It will be seen that these two rotary cutters which project out in front of the end of the shaft 12 are located in convenient. position with respect to the same for use in performing their functions on a shoe held in position by the operator in the usual way.

The shaft 12, in addition to the two pulleys above mentioned, is provided with an eccentric stud 25 on which are pivoted two links 26 and 27, respectively. The parts operated by these links are the same on both sides except that they are right and left handed and a description of one will apply to the other. I

These two links 26 and 27 are arranged horizontally so that they form almost a straight line with each other and their outer ends are each connected with the upper end of a lever 28. This lever is pivoted on a stud 29 fixed to its respective bracket 23. Each of these levers is provided with a downwardly extending arm 30 and with a horizontal arm 31. On the lower arm 80 is fixed the edge trimming knife 32. This knife is of a curved formation having its cutting edge located in a curve almost concentric with the pivot stud 29, but slanted slightly therefrom to provide the necessary relief. I have shown the knife as being fixed to a steel support 33 which itself is fixed to the arm 31, the knife being adjustably mounted to permit of its ready removal for sharpening and replacement, and of its being moved sidewise before it is fastened in position.

It will be seen by reference to Fig. 1 that the two knives 32 move toward each other and that the operation is such, due to the connections abovedescribed, that when'one moves forward to perform its cutting stroke, the other moves back. They are arranged far enough apart so thata shoe of the largest size can be operated upon by either without danger of being interfered with by the other. V

The other arm 31 above mentioned is provided with a stud 35 inclosed in a longitudinal passage in it. It constitutes merely a pivot stud for connection witha slide 36. There is no need of fixing the stud 35 in the arm '31, )rovided itis made, as shown, of a cylindrical form fitting a cylindrical bore in the arm. The slide 36 is arranged nearly 7 vertically and provided with a transverse cutter 37 which is designed to cut across the trimming which is cut out of the edge of the sole so as to detach it therefrom. It is adjustably mounted on the slide 36 and operates in the plane of the heel breast. Its edge is curved and slantedflso that it has a drawing out. I i V The slide 36 is mounted in a. bracket40 fixed on the base 10 and provided with a slot 41 in which the slide 36 operates. In the present instance, the slide is shown as cylindrical and the passage is, of course, of the sameshape. This bracket also is provided with a stop 42 adjustably mounted and having an edge 43 adapted to engage the heel breast and limit the positionfof the shoe longitudinally. It is also provided with a gage 44 adapted to enter the crease between the sole and the upper and serve to receive the shoe when it is first put into a position to approach the operating cutter. This guides the shoe up to proper position until the heel breast engages the edge 43 of the stop 42. i V 1 The'position of the shoe is further fixed by the following mechanism The bracket 40 is provided with a passage 46 through it, parallel with the passage 41. Into the top of this screws a hollow cylinder 47 through which'passes the shank 48 of a stop" 49. Thisstop is provided with a screw thread 50 on which is a thumb nut 51, the bottom of which rests on the top of the stationary 'turning the thumb nut 51. justment can be secured by turning the butadjustable cylinder 47. Fitting in the recess on; the bottom of this cylinder 47 is a spring 52 which presses against a pin 53 harried by the step below. This spring,

therefore,,strongly forces the step down but will yield to permit of its being adjusted by A further ad- 1 limit the motion of the shoe toeyard the cutters in that direction. The operation of the device is shown partly in Fig. 3.

The operator passes the shoe under the cutters 20 and 21 in succession to trim the heel seat and the edge of the sole. The lat-' ter operation obviously leaves a certain amount of leather near the heel onboth sides which can not be trimmed by the rotarycutter without injuring the heel. The operator performs these two operations, one after the other. 7 proper position to insert into the left hand head of the machine, that is, it is in a position parallel with that shown in dotted lines in Fig. 3 when it leavesthe edge trimmer 21. All he has to do is to lower the shoe and move it inwardly slightly without turning it.

First he sets the gage 44' into the crease betion the shoe accurately and the operator,

after the machine 'isonce set. does not have to exercise any particular skill in operating the machine; Anunskilled operative can not getthe shoe much out of position because, as will be observed,.the stop 49. and 44 are on'opposite sides of the breast of the heel and almost continuous. with each other. They prevent the rocking of the shoe if' the' operator merely keeps it in contact with both. The stop 42 locates the shoe longitudinally so that there is no danger of having the cut come in the wrong place. WVhile he is getting the shoe into positionas above described, the cutters are constantly operating. The action is such that, the edge trimming cutter 32 moves throughout the length of its stroke and then begins to draw back before the transverse cutter 3'? moves down into operative position. 7 In other words, they operate alternately. If it is necessary to allow the cutters to act more .the opposite side ofthe shoe, is to turn the toe downwardlyand half way around and bring the :shoe backunder the righthand head. The parts are in alinement and their When he has finished, the shoe is in location is learned very readily. Therefore, an operator without previous experience can become skilled in a very short time in transferring the shoe from one position to the other to complete the operation on one shoe. The same thing may be said to be true with respect to the rotary edge trimmer 21 and the rotary cutter 20.

In addition to the advantages incidentally brought out in describing the operation of the machine, it will be observed that it is very simple and compact, easily taken care of. that the knives are easily taken out and replaced for sharpening and repairs, and that the adjustment of the heel side gage 49 is a very simple operation. The latter is important because the heels vary with the dif ferent sizes and the machine to be operated through. the whole series of sizes.

I lay particular stress on the relative location of the parts because it permits of the edge trimming of the shoe by the operator in the usual manner with which it is to be supposed he is familiar, and the completion of the trimming operation without materially changing the position of the shoe or shifting it from one hand to the other. This is an important feature in a machine of this kind where the time employed by the operator and machine is an important element in the cost of the article.

Although I have illustrated and described only a single form of the invention, I am aware of the fact that modifications can be made therein by any person skilled in the art without departing from the scope of the invention as expressed in the claims. Therefore, I do not wish to be otherwise limited to the details of construction herein shown and described, but what I do claim is 1. In a machine for finishing the trim ming of the edge of a boot or shoe sole, the combination with an edge trimming finishing knife and a transverse cutting knife working substantially in the plane of the breast of the heel, of a stop for engaging the side of the heel, means for positioning said stop, means for yieldingly pressing said stop toward the heel, means for limiting its motion in that direction, and means for adjusting said limiting means.

2. In a machine for finishing the trimming of the edge of a boot or shoe sole, the combination with an edge trimming finishing knife and a transverse cutting knife working substantially in the plane of the rocable slide pivoted to said arm, and means for mounting said transverse cutting knife on the slide.

3. In a machine for finishing the trimming of the edge of a boot or shoe sole, the combination with a shaft, of a stud eccentrically connected therewith, a pair of links extending therefrom in opposite directions, two opposite pivoted frames each connected with one of said links to be rocked thereby, and a finishing cutter mounted on each and curved in an are substantially concentric with the axis on which its frame rocks, said cutters extending inwardly toward each other.

4. In a machine for finishing the trimming of the edge of a boot or shoe sole, the combination with a shaft, of a stud eccentrically connected therewith, a pair of links extending therefrom in opposite directions, two opposite pivoted frames each connected with one of said links to be rocked thereby, and a finishing cutter mounted on each and curved in an are substantially concentric with the axis on which its frame rocks, said cutters extending inwardly toward each other, whereby as one cutter makes its cutting stroke inwardly the other will move backwardly in the same general direction,

5. In a machine for finishing the trimming of the edge of a boot or shoe sole, the combination with a shaft, of a stud eccentrically connected therewith, a pair of links extending therefrom in opposite directions, two opposite pivoted frames each connected with one of said links to be rocked thereby, and two transverse cutters, one pivotally connected with each frame.

In testimony whereof I have hereunto afiixed my signature.

EPI-IRAIM GODIEN.

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