US1392799A - Machine for trimming soles - Google Patents

Description

-LH. RlcHARnsoN. NIA-CHINE FOR TRIMMING SOLES. APPLICATION FILED. NOV. 3, 1916.

2 SHEETS-SHEET I.

l. H. RICHARDSN.

MACHINE FOR TRIMNHNG SOLES. APPLICATION FILED Nov. s, 1916.

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JOHN H. RICHARDSON, OF MELROSE, MASSACHUSETTS, ASSIG-NOR, IBY MESNE ASSIGNMENTS', TO UNITED SHOE MACHINERY CORIORATION, OF IPATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

MACHINE FOR TRIMMING- SOLES.

weaves,

Specification of Letters Patent.

Application filed November 3, 1916. Serial No. 129,304.

chines, and in particular to machines used to perform the operation known as jointing in the manufacture of shoes` This operation consists in trimming the edge of the shank of a shoe from the point where the usual machine trimming operation is stopped to the heel breast.

One type of machine used for the performance of this operation includes a knife arranged to move` along the shank edge to raise a shaving, and a seco-nd knife, moving substantially at right angles'to` the shank edge to detach the shaving, the two knives being so coordinated rthat they reach alternately the same extreme point ofv movement. By :the operation of this machine the shaving detached is cut up into small pieces, a procedureV which wastes power, dulls the detaching or chopping knife rapidly, and entails more or less injury to the shank edge in front of the heel breast, since a slight inaccuracy in adjustment of the chopping knife will cause it to cut tooL deeply and make a series of scars along the shank.

lt is a principalobject of my invention to obviate these difficulties by controlling the operation of the detaching means so that it will come into operative relation to the work only-when desired. The power wasted in Acutting the trimmed shaving into small pieces is thereby saved, the rapiddulling and consequent frequent grinding and wear of the chopping knife is avoided, and the extreme care in adjustment formerly required are made unnecessary since a single cut in the shank edge at the heel breast does not damage the appearance of the shoe and is not particularly objectionable.

A fea-ture of my invention comprises a novel organization of trimming means for a solo edge, means for detaching the material trimmed, and means for controlling the operation of the detaching means` The detaching means need not, therefore, occupy operative position relatively to the work until the trimming means has reached the heel breast, and the diiiiculties incident to premature and repeated detaching operations are avoided.

Another feature of the invention com- Patented Oct. 4, 192i.

prises manually operated means for controlling the operation of the detaching means by initiating its operation upon the work only when necessary. Y

A further feature comprises a continuit to a potential operating position in relation to the work.

AnotherV feature of the invention comprises a positively operated means for detaching a shaving raised on a sole edge, and mechanism for controlling its operation. The detaching of the shaving is the result of positive detaching action, and the detaching means may be placed in actual operation on the work at the will of the operator.

Another feature comprises a detaching means having two motions, one of which is effected positively through powerdriven connections to detach the material trimmed, and the other of which is effected manually to shift `theJ work-engaging instrumentality from an idling field to its field of operation. These and other features of the invention, comprising certain arrangements and combinations of parts will bebest understood from the following description of a pre- -mainframe, projects through the head, and

carries an eccentric wrist pin 16 at4 its front end. A long stud 18 is ixedly mounted in the head by means of the set screw 20, and extends forward horizontally parallel to the drive shaft. Mounted upon this stud is a sleeve 2Q, having at its rear end a downwardly extending yoke 24, which embraces 'ouslydriven detaching means normally held y away from the work, and means for moving Athefknife 36 firmly Vin place.` It will be oboperating `upon the left handV edge of the the wrist pin 16 by means of some approved bearing device, such as a block 26, sliding in `the yoke `and rotatably'mounted on the wrist pin 16.Y The yoke has a number of stiening ribs 28, and an upwardly projecting lug 30, which bears against a hardened block 32 mounted in the head and holds the sleeve 22 in position on the stud 18.

The sleeve 22 has mounted on its forward end a head 34 which'carriesV the trimming knife 36. This knife is mounted in a horizontally extending dovetailed slot 38 in the lower part of the head, the rear wall of the dovetailedslot being deeply grooved as at 40in order to permit the screw 42 to clamp served'that Ithe knifeV 36 has a cutting edge at each end, the right hand edge, as seen in Fig. 3, operating upon the right hand edge ofthe shank of a shoe and the left hand edge shank when the shoe is turned over, as will be readily understood. The rotation of the shaft 14 and the wrist pin 16 causes oscillation of the sleeve 22 and the head 34 carried .by-it and causes the knife 36 to vibrate back Aand forth along `the edge of the shank.

The head 34 also carries a vertically extending dovetailed rib 44. VClosely fitted to slide freelyuponthis dovetailedl rib is a correspondingly shaped slide 46 which has profjectin'g horizontally from its front face' a pin 48. rllwo upstanding brackets 50 and 52 -on the rear'and front ends of the head 12 respectively carry a rock shaft 54 having projecting crank arms 56 and 58. The crank arm 56 is engagedby a treadle rod'60 operlatedby atreadle not shown. A lateral extension on the crankarm 56 is engaged by i 56 is limited in any desired way,.as for in- 55,: Y `its lower end, extends between the pin 48 .and the crank arm V58. The split bearing is stance by a stop above the treadle. The crank arm 58 has a slot 66 at its outer end Vand a1pivotedlatch 68 is spring held downwardly over the end of the crank arm58 to close the slot. A suspension link 70, having a yoke at its upper end in which is mounted a pin 72, and a split bearing 74 at properly fitted to the pin and the yoke em- -braces 'the crank arm, the pin 72 being removably held in the slot 66'by the latch 68.

.It will be clear'that the slide 46 will oscillate Vwith the head`34 owing to the dovetail connection between the two,and that at the same time it can be moved up and down on thehead 34 by the spring 62.and .the treadle rod 60, respectively, owing to the sliding feature of this connection.

The slide 46 carries two ylaterally 'extend ing arms 76, toY the ends of which are pivoted two curved levers 78, 80, each of which carries at its lower end a split clamp in which is mounted the upwardly extending shank of al chopping'knife 82.` The V'chopping knives 82 havertheir cutting edges so shaped as to-fit the cross section of the shank of the style of shoe being operated upon. The upper ends of these levers carry rotatably adjustable eccentric pins 84 on which are mounted friction rollers 86. Fixedly mounted upon the head 12 is a guide block 88 having two slots 90 in its front face in which therollers 86 are` arranged to slide. The oscillation of the slide 46 will cause a corresponding oscillation of the pivots 79 of the levers and the confinement of the upper Yends of the levers to the vslots 90 by means of the friction rollers 86 will cause an Vupand-down chopping motion of the knives 82. The 'adjustment of the shanks ofthe knives 82 in the levers 7 8,780 and of the eccentric Apins 84 at the upper ends of these levers will be such as to cause the cutting edges ofthe 'knife 36 and of'thercorresponding knives 82 to have,` respectively, the same extreme points of travel, the two cooperating knives in each case reaching their common position alternately. The slots 90 are so directed that theunderhanging ends of the levers and the Vknives theycarry will have a substantially radial movement as regards the center of oscillationvof the head 34, while the trimming knife has a circular movement as regards this center. The shaving raised by the trimming knife 'will lthus be cutfsquare across by the detaching knife, and the'shoulder formed, if any, willbe perpendicular to the shank edge. i Y.

Adjustably clamped to the forward end ofthe head 12 are two downwardly extending uprights 92 having pivotally clamped at their lower ends the gages 94. These gages are convenientlygbent in 'any desired manner and `may be adjusted through the two screws 93, 95 to bring their lower ends into the proper position for engagement vwith the heel breast of the shoelbeing operated upon. A frame 96 yis mounted upon a slide 98 which'engages-a backwardly ex-Y tending rib 100 upon the lower side'of the forward end ofthe head 12 and is clamped to the head'by the screw 102. This frame carries `at its forwardv end the downwardly extending rand guide 104 Vwhich is vertically adjustable by means of the 'clamp 106, the twoadjustments 106 and 98 permitting the adjustment ofthe guide in any desired position.

The operator lwill present the shoe Vto the machine with the upper toward him, the

guide 104 being inserted properly in the shank.

crease between the upper and the shank, so that the proper cutting edge of the knife 36 will engage the shank at the point where vthe trimming was discontinued, and will without operating, and they will not come in contact with the shank during this part of the operation. The shoe will be moved to the left until the right hand gage 94 comes in contact with the heel breast, this gage having been so adjusted that the end of the path of movement of the knife 36 will then be exactly at the junction of the heel breast and the shank. The operator will then step on the treadle, pulling down the treadle rod 60, compressing the spring 62 and turning the rockshaft 54 clockwise as seen in Fig. 3, until the pin 64 contacts the frame of the machine. This movement of the rock shaft will lower the slide 46 and cause the right hand knife to shift its operative path to operate in consequence of shifting its range of action until the eXtreme lower point of its movement is identical with the eXtreme right hand point of movement of the knife 36, that is, at the junction of the heel breast and The knife 82 will then detach the shaving which the knife 86 has split from the shank, the operator will release the `treadle, the slide 46 carrying the knives 82 will be restored to its uppermost position by the spring 62, and the operator will remove the shoe from the machine, turn it over and apply the left side of the shank to the left hand cutting edge of the knife 36 in the same way, operating the treadle as before, when the heel breast has reached Ythe lefthand breast gage 94 to control the operation of the corresponding chopping knife by bringing itV into operative relation to the sole edge. i

The holding of the chopping knives 82 away from the shank edge during the trimming operation avoids all danger of scarring the shank by theJ knives while the sha-ving is being raised. The smoothness of the shaving operation is not impaired as formerly when the chopping knives were permitted to chop the sole edge repeatedly during the 1shaving operation. A further advantage of my invention resides in the fact that less power is consumed than under former practice since the shaving is detached by one chopping operation instead of being cut to small pieces while the operation proceeds, as has been the case in previous machines of this type, The duty on the chopping knives themselves is also much lighter since they make only one cut through the shaving, and the expense due to grinding and consequent wear is much smaller. It will be observed also that the chopping knives are oscillated continuously whether in or out of operative position'with respect to the shank edge so that there is no jar on the machine incidental to initiating their operation.

It will also be found that the great care in adjustment of the detaching knives heretofore necessary'may be dispensed with, since a slight cut in the shank at its junction with the heel breast will not be regarded as a blemish.

What I claim as new and desire to secure by United States Letters Patent is 1. In a machine of the class described, means for trimming the sole of a shoe, driven means including a cutter for detaching the material trimmed, and means actuable during the operation of the machine for changing the path of the cutter without interrupting its motion.

2. In a machine of the class described, means for trimming the sole of a shoe, driven means including a reciprocated cutter for detaching the material trimmed, and means for shiftinoF the cutter from one field of motion to anot er.

3. In a machine of the class described, means for trimming the sole of a shoe, and means for detaching the trimmed material, constructed and arranged to be moved into and out of its operative path relative to the sole.

4. In a machine of the class described, means for trimming a sole, means for detaching the material trimmed normally held out of operative relation to the work, mechanism for moving said detaching means into operative relation with the work, and means for operating said detaching means independently of the movement of the latter to and from said relation.

5. In a machine of the class described, means for trimming a sole, means for detaching the material trimmed in coperative relation with said trimming means, but normally held out of operative relation to the work, and constructed and arranged to be movable into `such operative relation, and a stop stationary during the detaching operation limiting such movement at a point insuring proper cooperative relation of said trimming and detaching` means.

6. In a machine of the class described, means for trimming a sole, a work-engaging element for detaching the material trimmed, said element being movable manually from an .inoperative portion to a working position relatively to the work, and driven mechanism arranged to impart operating movement to said element.

7. InV a machine of the class described,

Vmeansfor-trimming a sole, driven means including a work-engaging element for de- 'tachingfthe material trimmed, means arment into operative relation to the work.

8. In a machine of the class described, a knife constructed and arranged to trim along the edgeof a shoe sole, and mechanism for giving said knife rapid oscillatory movements, a second knife normally inoperative as regards the work but arranged to cut transversely into the sole edge, and manually operated mechanism arranged, to move said secondY knife .vinto the work.

9. In a machine of the class described, means for trimming a sole-edge, a cutter,

'continuously driven means for operating the cutter, and manuallyv controlled means for causing the cutter to detach the material trimmed by the first said means. Y

10. In a machine of the class described, means for trimming a sole, driven means arranged t'o occupy a cooperative relation to said trimming means for detaching the material trimmed, and manually operated mechanism arranged to change the relation of said trimming means and said detaching Ymeans' while the'latter is being driven.

y11. In a machine of the class described, means for trimming a sole-edge, driven mechanism including knife to whichcutting motion is imparted positively, and controlling means arranged to cause the knife to detach the material trimmedY bythe first said means. Y

12. In a machine of the character described, means arranged to trim the edge of a shoe sole, a cutter, means arranged to move said cutter into operative relation with the work, and driven means arranged to operate said'outter to detach the material trimmed by said trimming means.

13. In a machine of the class described, means for trimming the sole of a shoe, means for detaching the'material trimmed, and driving mechanism for said means constructed and arranged Vto operate it normally in a path out'of operative relation to the work and to carry it into such operative relation when desired.

14. In a machine of the class described, means for trimming the edge of a shoe sole,

means for detaching the trimmed material,

and driving mechanism for said detaching means, relative to which said means is adjustable during the trimming ofa sole.

l15. In a machine of the class described, means for trimming the edge of a shoe sole, means for detaching the trimmed material from the sole, and driving mechanism for said latter means having positive connection Vloose connection therewith in another direcis movable.

17. Inra machine of the class described, a sole trimming instrumentality, a lrocking member, a chopping knife `holder'mounted on said member and adjustable toward and from the center ofA oscillation thereof, to

control its operative relation tothe work, and means for cordinating said instrumentality anda knife carried by said holder to trim and `detach al shaving from a shoe sole.

18. In a machine ofthe class described, means for trimming the sole of'a shoe, means for detaching the material trimmed from the right sideof the sole, means for'detaching the material trimmed from the left side of the sole, and a member carrying said two detaching means and Vconstructed and arranged to control their relation vto Vthe work. I Y

19. Ina machine ofthe class described, means for trimming the'edge of a shoe sole, means for detaching the trimmed material from the sole, said latter means being continuously driven, but normally held in inoperative position withrelation to the work, and mechanism for -placing said means in operative relation to the work. Y

20. In a machine ofthe class described, means for trimming the edge of a. shoe sole, and continuously drivenmeans for detaching the trimmed material from the sole, constructed and arranged to remain normally out of operative relation to the work and to fromthe right'and left sidesof the sole, and

continuously operating drive mechanism for said latter means, having connection :therewith constructed and arranged 1to7permit movement of said detaching means as a whole toward'and away from the work.

22; In a machine of the class described, means for trimming the edge of a shoe sole, means for detaching the trimmed material from the sole, Vand continuously operating drive mechanism for said latter means, having connection therewith constructed and arranged to permit movement of said means as a whole into and out of operative relation Withthe Work.

23. In a machine of the class described, means for trimming a shoe sole, an oscillating drive member, a slide on said member carrying means for detaching the trimmed material, and means for moving said slide relative to said member during the trimming of a sole for controlling the detaching means.

24. In a machine of the class described, a sole trimming instrumentality, a power driven member, a chopping knife holder pivotally and slidably mounted on said member, a stationary member having a guideway formed in it, and a member adjustable on said holder positioned in said guideway for cordinating a knife carried by said holder with said trimming instrumentality.

25. In a machine of the class described, means for trimming the sole of a shoe, movable means adjustable to coperate therewith to detach the material trimmed, and means for controlling the path of movement of the detaching means without affecting the coperative adjustment between said trimming means and said detaching means.

26. In a machine of the class described, means for trimming the sole of a shoe, movabley means for detaching the material trimmed and means for changing the limits of movement of the latter means to bring it into or out of operative relation to the sole.

27. In a machine of the character described, means for trimming the sole of a shoe, driven means arranged to sever the material trimmed by said trimming means, and means arranged to shift the range of movement of said severing means.

28. In a machine of the character described, means for trimming the sole of a shoe, severing means movable to and from an operative relation to the work, and means arranged to impart severing motion to said severing means independently of movement of the latter to and from operative relation as aforesaid.

29. In a machine of the character described, means for trimming the sole of a shoe, means for severing the material trimmed by said trimming means, means arranged to operate said severing means, and means for moving said severing means to and from operative relation to the work independently of the movement imparted to the severing means by said operating means.

30. In a machine of the character described, means arranged to shave the edge of a shoe sole, a cutter arranged to chop the shaving formed by said means, and means arranged to be operated manually to move said cutter in the direction of its chopping motion.

3 1. In a machine of thev character described, means arranged to trim the edge of a shoe sole, a cutter arranged to detach the material trimmed by said trimming means, manually operative means arranged to move said cutter in the direction of its cutting movement, and driven means arranged to move said cutter in said direction.

32. In a machine of the character described, means arranged to trim the edge of a shoe-sole, a cutter arranged to detach the material trimmed Iby said trimming means, driven means arranged to move the cutter in the direction of its cutting motion, and means arranged to advance the limit of motion of the cutter in said direction as imparted by said driven means.

33. A machine of the character described comprising a chopping knife, and mechanism constructed and arranged to operate said knife, said mechanism including a reciprocatory member by which the chopping knife is supported but relatively to which the knife moves to execute its chopping motion, said supporting member being adjustable to advance and retract the chopping knife with respect to its lines of chopping motion.

34. machine of the character described Comprising a chopping knife, and mechanism for operating said knife, said mechanism including a movable carrier by which said knife is supported and to which it is pivotally connected so as to provide for relative angular movement, said carrier having oscillatory motion to impart chopping motion to the knife and being otherwise movable to shift the knife to dilferent elds of motion.

35. In a machine of the class described, the combination with means for trimmin the edge of a shoe-sole in front of and up to the dine of the heel-breast, of a stop arranged to engage the breast of the heel of the shoe to limit the operation of said trimming means along the sole-edge, said stop and trimming means being relatively adjustable in a direction substantially perpendicular to the path of the trimming means.

36. In a machine of the class described, the combination with means for trimming the edge of a shoe-sole in front of and up to the line of the heel-breast, of a stop arranged to engage the breast of the heel of the shoe to limit the operation of said trimming means along the sole-edge, said stop and trimming means being relatively adjustable in directions substantially perpendicular and parallel to the path of the trimming means.

In testimony whereof I have signed my name to this s ecification.

, J HN H. RICHARDSON.

Corrections in Letters Patent No. 1,392,799.

Itis hereby certified that in Letters Patent No. 1,392,799, granted October 4, 19217 upon the application of John H. Richardson, of Melrose, Massachusetts, 'for an improvement in Machines for Trimming Soles, errors appear in the printed specification requiring correction as follows: Page 3, line 29, strike ont the Words to shift its operative path; saine page lines 87 and 88, olairn 1, for the Word aetuable read actuatable, and line 127, .claim 6, for the Word portion read position; and that the said Letters Patent should be read 'with these corrections therein that the same may conform to the record of the oase in the Patent @mea Signed and sealed this 13th day of December, A. D., 1921.

[SEAL] KARL FENNING,

Acting Commissioner of Patents.

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