US1738587A

US1738587A - knowlton

Info

Publication number: US1738587A
Authority: US
Publication date: 1929-12-10
Anticipated expiration: 1946-12-10

Description

Dec. 10, 1929. H, owL'ro 1,738,587

MACHINE FOR OPERATING ON HEELS Filed oht. 17, 1925 i w #4 .2. 4e ii //0 9/4 /z" Flgolo I; l 1 i v i E E I I 46 Patented Eec. 1Q, 1929 i ih lTifi i NOEVTOOD H. KNOWLTON, OF RQGKPORT, MASSACHUSETTS, ASSIGNOE 'IO UNITED SHOE MAOHINERY'OORPOBATION, OF PATERSON, NEW JERSEY, A COHORATION OF NEW annsnr MACHINE FOR OPERATING ON HEELS Application filedOctober 17, 1925. Serial No. 63,092.

This invention relates to machines for operating upon the heels of boots and shoes and isillustrated as embodied in a machine for trimming the breast portions of heels. for example, Louis heels. The invention is illus trated herein as embodied in a machine of the type disclosed in United States Letters Pateit No. 1326,2354, granted Au'gust 22, 1922, on application of D. W. Bunker.

Machines of this type comprise a rotary cutter and a work support or carrier against which the tread face of the shoe is held and which is movable upwardly to carry the shoe across the acting face of thecutter and to expose the breast face of the heel to the action of the cutter. if the upward movement of theshoe is in a straight line the cutter will give the'shoe a' transversely straight breast. If the shoeis moved away from and toward the cutter during its-movement past the cutter the-heel will be given a transversely convex breast. An object of this invention is to provide mechanism'whereby either a transversely straight breast or, a transversely convex breast may be given to the heel at the option of the operator.

"Accordingly, features of the invention consist in an organization comprising a rotary cutter. a work support or carrier which is iovable vertically and also movable toward and-from the cutter, and' a plurality of dis- .similarstationary cams or templets,'e1ther off which may be caused to govern the lines of movement of the shoe past the cutter to determine the form of the face to be generated'by the cutter; As shown herein, a roll mounted upon theshoe carrier engages a straight v rtical edge of a stationary plate or templet so'that the heel is given a rectilinear movement across the cutter and causes a transversely straight breast face to be formed thereby. Adjacent to the straight templet is another templet having a convex surface, and the roll on the shoe carrier is arranged forv adjustment to engage the edge of the second templet so that the-heel, during its movement across the cutter, Willbe moved firs'taway from the cutterand then toward itl t'ocause a transversely convex breast face to heel.

It is important that heels having breast faces of varying widths be so located on the heel carrier that when they are moved across the cutter to impart the convex'shape to the be formed thereby upon the heel breast the center of that convexity will be in the center of the heel breast, and it is also important that the means which holds the heel when so located be operated without special attention on the part of the operator. 7

carrier whereby heels of different widths are located with their longitudinal median planes in a constant position with respect to said templet, and meansfor operating the jaws as an incident to movement of the carrier past the cutter. As shown a pair of equally and oppositely movable aws are mounted on the shoe carrier, one of said jaws being connected to a foot treadle so that initial operation of the treadle will close the jaws upon the heel, the center of the heel breast, because of the centralizing action of the jaws, occupying a constant position irrespectively of the width of the heel, and further operation of the treadle will effect upwardmovement of. the

carrier, the adjustment being such that the center of the heel will reach the center of the cutter at the same time that the roll on the carrier reaches the highest point of the cam or templet. Preferably, the shoe-holding jaws are provided .with roughened surfaces which engage the sides of the toplift only of the heel.

These and other features of the invention, including various novel constructions and combinations of parts, will appear more fully from the following detailed description when will be pointed outin the ap-' read in connection with the accompanying" drawings and pended claims.

In the drawings: 1 is aside elevation of a machine embodying the present invention;

Fig. is a plan view of the work-positiondevices; and

Fig. 8 is a front elevation,-partly in section, of the heel-holding mechanism.

Referring to Fig. 1 of the drawings, the

' bracket 20, which, near its upper end, has a dovetailed portion 22 arranged to slide in guideway formed inv projection 21 from the column 2 and extending parallel to the shaft 10. A hand-wheel 26 and screw 28 are provided for adjusting the slide in the guideway, the parts being maintained in adjusted position by a screw having a head 30, the screw passing through a slot in the projection2 l, and being threaded into the slide 22. By loosening the screw and turning the handwheel 26, all the shoe-locating and holding mechanism coiiiprisihg the shoe carrier may be moved longitudinally of the shaft 10.

Pivoted at 3 1 to the lower end of the bracket 20 is a clamping member 36 through which a shaft 38 extends, the clamping member being tit, toned on the shaft by a bolt 40. T he shaft 38 is eiztended to a point beneath the cutterhead 14 where it is reduced to form a heellocating gage. As shown in Fig. 2, the reduction or the shaft consists in cutting away about three-quarters of its cr-osssection, leavins segmental portion 42 one flat face 4 1 of which is utilized a a gage for locating the heel longitudinally by engagement with its ice. A square, hollow post 46 is fitted to n the upper portion of the shaft 38 and oed between opposed flat faces formed on projections 48 extending forward ly from the bracket 20. A work carrier 50, which carries means for locating the shoe by engagement with the tread face ofthe forepart. the tread face of the heel, and the sides g and has a flat portion 58 against which the tre face elf-the reel is placed. From Fig. 2 ill be seen that the surfaceof the portion 581s right angles to the surface 44 of the 4 2'and sue-nanny back of it to expose for contact with the breast of the heel an adequate portion of the gaging surface l i.

In order to hold a shoe which has been located by the

positioning members

56, 58, and 42, a pair of heel-

gripping jaws

60, 62

is provided. These aws are pivoted by pins 6i to the upper portion 100 of the carrier and have interengaging teeth 66 (Fig. 3) so hat when one of them is moved the other. will heinoved equally and oppositely. In order to adjust the initial amount of separation of the jaws a screw 68 is threaded through an arm 70 of the'j'aw 62 and engages a projection 72- on the jaw ,60, said screw being held in adjusted position by a set-nut 74. Closing movement of the jaws is limited by engagement of a projection 7 6 on the jaw 60 with a part of the shoe-carrying member 50. The heel-engaging portions of the

jaws

60, 62 are preferably provided with toothed surfaces 78 which are preferably of limited extent heightwise of the heel and engage the sides of the toplift only of theheel. v

To operate the jaws,the upperen-dof a push rod 80 is connected at 82 tothe arm 70 of thejaw 62 and the lower end is pivoted at 84- to a lever 86 fulcrumedat 88 on a bracket 90 secured to the floor. .A' treadle member is pivoted at St to thebracket 90 and. has at its nection 96 with the lever 86. Consequently, when the outer portion of the treadle 92 is de pressed, the lever 86 will be operated to raise the rod 80 first to close the jaws 60, 62'upon the heel, and thereafter to raise thework-carrier 50 and the parts carried thereby for the purpose of presenting the breast face of the heel to the action of the cutters 16. Thus, the workprcsentiug movement is initiated by the arresting effect of the heel upon the closing movement of the

jaws

60, 62. The length of the rod 80 may be adjusted by a turn buckle 98. lhe portion 100 of the carrier 50 is shaped to embrace the rear part of the shoe and to form a guard for the operators hand which "holds the rear portion of the shoe.

illustrated machine is provided with mechanism for imparting to the heel,

outer end a pin-and-slot con-- :t the option of the user, a transversely .112 choice of breast to be formed.

A roll 102 mounted on the post 46 may be set to engage a straight, vertical face or track formed on the front edge-of a plate104. The roll 102 is held against its track 10% during upward movement of the post 46 by a spring .106 located between the bracket 20 anda-n adjustable hand nut 108 on a rod 110 which passes through the bracket and is pivoted to a. collar .112 embracing the shaft 38. When. the roll 102. is. thus located on thetrack 104 H to the desired condition with respect to v cutter-guard 150 s mounted on a stud the heel is given a "transversely straight.

second plate 114. having a cam surface on its front edge with which the roll 102 may, at

the option of the operator, be set to engage. As shown in Fig. 2, the roll 102 is mounted on a shaft 116 to which asleeve 118 is pinned. The sleeve 118 slides in a bore formed ina b 120 through whichthe shaft 116 passes. Between the sleeve 118 and the bottom of the bore is arranged a spring 122. On the outer end 01 the shaft 116 is a thumb-head 124 which has a projection 126 arranged to enter a recess in the boss 120. As shown in Fig. 2, the roll 102 is set to engage the cam plate 114 and, during upward movement of the shoe,'will cause the shoe-locating or carrying parts mounted on the member to be moved first away from the. cutter and then toward it, thus causing the cutter to impart a transverse convexity to the breast face of the heel. When it is desired to use the ma chine for imparting a transversely straight breast to the heel, the shoe carrier will be movedoutwardly slightly against the tension of the spring 106 and the thumb-head 124 V will be pulled outwardly and given a partial rotation so that the projection 126 will rest against the outer surface of the boss120. The roll 102 will then be located to engage the straight edge of the plate 104 and the shoe will be guided in a straight, vertical path. The

plates

104 and 114 are secured by screws 130 which pass through slots in a standard 132 extending upwardly from the bracket 120 and are threaded into the plates. A screw 134-is threaded into the upper end of the standard 132 -and has a flange 136 which engages a slot in thecplate 104. By loosening the screws 130 and turning the screw 184, the

plates

104 and 114 may be adjusted vertically. This enables the cam plate 114 to be so adjusted that the transverse convexity of the heel breast maybe properly located transversely of the heel.

In order that the shoe carrier 50 may be adjusted toward and from the cutter so that the knite willclear the shank surface of the shoe, the roll 102 is arranged for adjustment at right angles to the shaft 10. Asbest shown in Fig. the boss 120 is formed on a slide which is mounted on. the'post 46 for horizontal sliding movement at right: angles to the shaft 10, A screw 140 is mounted for rotation in a part 142 secured to the post 46 and is threaded into the slide 138 so that when the screw 140 is rotated-by its thumb-head 144 the nude 138 will be moved horizontally relatively to the post 46. The

slide- 138 is held in adjusted position by a screw 146wh1ch passes through a slot 148 in: the slide 138 and is threaded nto the positioning and carrying mechanism.

152 fixed in the upper portion of the tread rest 58 and is held in place by a set-screw 154.

It will be clear that since the

jaws

60, 62 are moved equally and oppositelya heel or" any width will be centralized between them and hence will be centralized with respect'to the cam 114 so that after the cam is once properly set it does not need to be re-adjusted for heels of other or varying widths that are being operated upon.v

It will also be noted that the shoe holding and locating mechanism may be adjusted about the longitudinal axis of the'shait 38; also, that the center of this shaft is nearly coincident with the breast edge of the toplift.

By loosening the bolt 40 and the bolt 52 the carrier 50, carrying the shoe-locating devices and the shaft 38 because of the key and slot connect-

ion

51, 53, can be turned about the longitudinal axis of the shaft 38 for the purpose of locating the heel with respect to the cutter, so that the required amount of material will be removed from the heel breast to Form the shape of heel desired.

The illustrated machine is provided with improved mechanism for retarding upward movement of the shoe to prevent the'cutter from chipping the lower edge of the heel breast while completing the trimming operation. On the shaft 38 is a flanged sleeve 158 adjust-ably held thereonby a set-screw 160.

A member 162 is loosely mounted on the shaft 38 and normally rests against the mem ber 86. Between the flange of the sleeve 158 and the member162 is a compression spring 164 which may be maintained under initial deflection of any desired degree according to the displacement of the sleeve 158. Connected to the member 162 is a rod 166 which has nearly completed its cut. Upward movement ot the workis thus momentarily checked until sufficient additional force is brought to bear on the treadle to compress the spring 164 in addition to lifting the inert load. The cutting stress is thus momentarily relieved so that when it is resumed the cutter will complete its work without chipping the lower edge of the heel breast. The sleeve 172 is so set as to determine the lower position of the post 46 and hence of the shoe holding,

shock of contact. of the ear 168 with the collar 170 and the sleeve 172 may be deadene'd -by suitable washers of leather orthehne The l placed between them. A spring 174 is preferaibly connected between the ear 168 and a pin 176011 themachine frame under suliicient tension partially, at least, to counterbalance the weight ofthe post 46 and the parts carried thereby and hence to relieve the operator "of part of the effort of operating the machine. In order adjustably to determine the limit of upward movement of the carrier 50, a plate 176 is secured to the post 46 by a screw 178 passing through a slot in the plate and threaded into the post. The plate 176 is adjusted to engage the lower edge of one of the projections 48 when the desired movement of the carrier past the cutter has been effected.

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

1. A machine of the class described having, in combination, a rotary cutter, a shoe carrier movable across the acting face of the cutter, aplurality of temple-ts, a roll arranged to engage oneof t-he templets to control movement of the carrier toward and from the cutter as it moves across the cutter, and means for relatively shifting, the roll and templets to place the carrier under control of another templet.

2. In amachine of the class described, the combination of a rotary cutter, a tread rest toreceive the tread face of the heel of a shoe, means for moving the tread rest and the cutt-er relatively to carrytthe shoe heel across the acting face of the cutter, and means in cluding alternatively operating controlling; elements for directing such movement in a straight or in a curved path, as the case may be.

3. A machine of the class described having, in combination, a rotary cutter, a shoe carrier movable across the acting face of the cutter, a plurality of stationary templets, roll on the carrier arranged to engage one of the templets to control movement of the carrier relatively to the cutter, and means for shifting the roll into operative relation to another templet at the will of the operator.

I; In a machine of the class described, the combination of a rotary cutter, a tread rest to receive the tread faceof the heel of a shoe, means for movingthe tread rest relatively to the cutter, means for directing such moveientin a straight or in a curved path, and means adapted to be set at will to en arge eitiier of said directing means.

5. In a machine of the class described, the

combination of a rotary cutter, a rest for the tread face of a heel, and means for moving the rest and the heel across the acting face of the cutter, said-means comprising jaws pivoted to the rest and constructed and arranged for equ'alandopposite movement to grip the heel, said means also comprising connections arranged to close the jaws upon,

7. In a machine of the class described the combination of a rotary cutter, a tread rest to receive the tread face of a heel, heel holding jaws mounted on the rest and arranged for equal and opposite movement, means for closing the jaws and for moving them and the tread rest to carry the heel past the cutter, and a plurality of guiding means arranged for selective use for controlling the path of such carrying movement.

8. In a machine of the class described, the combination of a rotary cutter, a worlecarrier having a tread-rest for the tread face of a heel, cooperative jaws carried by said carrier to grip the heel positioned against said treadrest, and means arranged to effect relative closing movement of said jaws to grip the heel and V thereafter to move saidcarrier, while maintaining said jaws in gripping; lation, in a direction to carry the heel sidewise pastsaid cutter.

9. In a machine of the class descriliied, the combination of a rotary cutter, a tread i against which the tread face of a heel is by a hand of the operator, means for moving the rest to cause operation of the cutter upon the breast of the heel, means for moving the tread rest toward and from the cutter during its movement past the cutter, jaws on the rest arranged for equal and opposite movement centralize the heel with respect to the means which moves the rest toward and from the cutter, and means for operating the jaws to grasp the heel as an incident to movement of the rest past the cutter.

10. In a machine of the class described, the combination of a rotary cutter, a carrier, a pair of relatively movable jaws mounted on said carrier to grip a heel, means for closing; the jaws, means for moving the carrier by aid of the jaws to present a gripped heel to th' iil cutter, and a cam for guiding the carrr L a curved path relatively tothe cuttez part a. convexity to the heel held in th 11. In a machine of the class de cribed, the

combination of a rotary cutter, a carrier provlded wlth a rest forthe tread face of a eel, heel holding aws mounted on said carrier and arranged to close equally and oppositely against the sides of the heel to hold the heel upon the rest, and operating means including a member arranged to effect, by a continuous movement in one direction, a closing movefrom the cutter, and treadle operated means arranged first to close the jaws upon the heel to locate a heel of any width with its center in a predetermined relation to said cam and thereafter acting to move the jaws and heel body to present the heel to the cutter.

18. In a machine of the class described, the combination of a rotary cutter, a rest for the tread faceof the heel, holding means arranged to close against the sides of the heel to hold the heel upon the rest, a gage to locate the heel relatively to the holding means, and manual means operating first to close the holding means and then to move relatively the shoe and cutter to cause operation of they cutter upon the heel breast and to effect relative movement of the gage and the holding means to prevent the gage from interfering with the action of the cutter upon the heel.

lLIn a machine of the class described, the combination of a cutter, a rest for the tread face of the heel, two holding jaws on the rest arranged for equal and opposite movement, a gage for locating the heel of the shoe relatively to the jaws, means for moving relatively the cutter and the tread rest to cause the cutter to operate on the breast of the heel of the shoe, and means J operating as an incident to said relative movement for causing the jaws to hold the shoe and formoving the jaws and heel bodily relatively to the gage.

15. In a machine of the class described. the combination of a rotary cutter,.-a pair of jaws movable relatively to the cutter and equally and oppositely movable relatively to each other, a gage for locating the shoe rel atively to the jaws, means for closing the jaws and moving them relatively to the cutter andaway from the gage to cause the cutter to act on the heel of the shoe and to avoid interference of the gage with such action, and means acting after the shoe leaves the gage for moving the jaws and cutter relatively in a direction at right angles to the first-mentioned relative movement as an incident thereto.

16. In a machine of the class described, the combination of a rotary cutter, a bracket, a shaft secured to the bracket, a flat sided post mounted to slide on the shaft, proj ections on the bracket engaging the flat sides of the post, and a shoe carrier mount- 7 ed on the post and movable therewith in presenting a shoe to the cutter.

17. In a machine of the class described, the combination of a rotary cutter, a shaft, a hollow post on the shaft, a shoe carrier on the post arranged for adjustment about the axis of the shaft, a spline connecting the carrier to the shaft so that the shaft and carrier will be adjusted together relatively to the post, and means for releasably holding the shaft from turning.

18. In a machine of the class described, the combination of a rotary cutter, ashoe carrier movable to present a shoe heel to the cutter, a shaft fixed against longitudinal movement on which the carrier slides, relatively movable abutments arranged on said shaft, a compression spring arranged between and seated against said abutments, a rod parallel to said shaft and connected to one of said abutments, an ear on the shoe carrier arranged to slide on the rod, and a collar to be engaged by the car when by movement of the carrier the action of the cutter upon the heel is nearly completed and to retard movement of the carrier.

19. In a machine of the class described, the combination of a cutter and a work holder movable relatively one to the other to cut the work progressively, manually operative means arranged to effect such relative movement of said cutter and said Work holder, a spring, relatively movable elements arranged to'maintain said spring under initial deflection, and lost-motion connections arranged to apply the developed force of said spring to counteract the moving force applied to said means during the latter stages of the cutting operation.

In testimony whereof I have signed my name to this specification.

NORWOOD H. KNOWLTON.