US834349A

US834349A - Heel-making machine.

Info

Publication number: US834349A
Application number: US13502902A
Authority: US
Inventors: George E Warren
Original assignee: United Shoe Machinery Co AB
Current assignee: USM Ltd; United Shoe Machinery Co AB
Priority date: 1902-12-13
Filing date: 1902-12-13
Publication date: 1906-10-30
Anticipated expiration: 1923-10-30

Description

y v PATENTED'OCT. so, 190e.' G. E. WARREN. HEEL MAKING MACHINE.

Arr'mouronr nun 110.155, 1902.

FIQ.

v INVENTOR Y UNITED STATES GEORGE E. WARREN, OF BOSTON, MASSACHUSETTS, ASSIGNORy TO UNITED SHOE MACHINERY COMPANY, OF PATERSON, NEW JERSEY, CORPORATION OF NEW JERSEY.

PATENT oEFIoE.

HEYEL-'MAKmG MACHINE.

Ne. 8e4-,349.

Specification of Letters Patent.

Patented octl 20,1906.y

Application filed December 1.3, 1902. Serial No. 135,029.

Tovwll whom it pray con/cern,.-I

Be itvknown that I, GEORGE E. WARREN, a

`citizen of the- United States, residing at Boslowing tobe a'full, clear, and exact description of the invention, such as will enable others skilled in the art to which it apper- `tains to make and use the same.-

y The present invention relates to heel-making machines, and more particularly to machines for concaving the tops ofr Wooden heels.

In themanufacture ofcertain classes `of wooden heels it` is the practice to dispense v with the use of a rand for forming a concavity caving the top of the heel.

vfoot of the wearer of the shoe.

in the upper surface of the heel to it the heel portion of the solek by scooping out or conconcavity is generally made to conform more or lessv accurately to the shape of the'lastthat is to say, to the shape of the heel of the Roughly speaking, the concavity should be oblately spheroidal at the rear and elliptically cylindrical at .theV front part of the heel.

The object ofthe present invention is to produce amachine for concaving the tops of heels, whether of wood lor leather or other material, and whichat onev operation will concave the top of the heel to the desired shape without dependence upon the skill or judgment of the operator and with uniformity and speed.

The present invention is especially designed fo`r use in the manufacture ofthe heelblocks used in making the heel and counterprotector described in Letters Patent of the UnitedStates, No. 706,551,Au'gust 12, 1902, l

granted to Wiilliam Gordon and myself.

Topthe'above ends the present invention consists in the devices and combinations of devices herein described and more particularly defined in the claims.

s The illustrated embodiment of the present invention is constructed as follows, reference The shape of the:

a stem 21.

beinglhad to the accompanying drawings, in Whic Figure 1,is a plan of the machine, and Fig. 2 a sectional elevation.

Upon a suitable table or standard (not shown in the drawings) is supported a'hollow circular trunk 1. a bearing-ring 2 and a supporting-ring 3, connected by spokes 4, is journaledupon the the trunk. In vertical sleeves-5, carried by the turret, are pivoted'stems 6, carryingwo'r-kholders 7. Each work-holder has shoulders- 8 and 9 receiving, respectively, the back-j ward anddownward thrust of thework and a sliding jaw 10, which engages the upper edge of the heel held in the holder. T-hejaw 10 is dovetailed to slide vertically in the front of the holder. A screw-pin 11, fixed in the jaw, projects through a vertical slot tothe back of the holder, where it is engaged by'a slotted hand-lever 12, pivoted at 13. By lowering and raising the hand-lever the jaw may be moved into or outpof engagement with the work to hold or release it. 4

A rotary cutter-head 14 is fixed to a horizontal shaft 15, journaled at 16.16 to 1a bedplate 17, adjustably xed, by means of screws- 18, passing through slots in the bed-plate, to a p ate 19, fixed to the upper end of' the trunk 1 by screws 20 and centered thereonfby A pulley 22 serves to rotate the shaft and cutter-head by a belt from asourc'e of power. A

To bring the work-holders and the work held thereby successively in operative relation with thel cutter-head means for slowly and continuously rotating the turretl are provided, comprising an annular worm-wheel '23,

fixed to the bear1ng-ring2 of theturret, and

-a worm 24, mes-hing therewith. The worin is rotated by a shaft 25, journaled on the frame or table ofthe machine and driven by a belt or other connection with a source of .owen

As the turret rotates slowly in t edirection of the arrow the heels or heel-blocks 26 in the work-holders are successively presented to the cutters of the rapidly-rotating cutter-head. The heel is inserted in the holder A rotary turret comprising with the upper surface of the'heel facing the cutter-head, the breast of the heel being against the shoulder 8. The cutter therefore begins to cut at the rear of the heel and finishes at the breast, and the cutter is arranged to cut downward, so as to hold the heel against the shoulder 9.

In order to iiatten the latter part of the curve described bythe cutter-fi. e., to make the latter part of the concavity substantially ellipticallyy cylindrical-means are provided for slightly turning the work-holders about their stems during the progress of the cut. To the bottom of each'stem 6 is attached an arm27, carrying a cam-roller 28, engaging a cam-path 29 in a cam-ring 31, attached to the plate 19. The greater part of the camgroove is concentric with the axis of the turret, andthe work-holders and their stems are v during most of their travel held by the camarms in such angular relation with the turret that if they passed the cutter without change of position the cutter would begin to cut at the upper rearedge of the heel and leave at a point 1n the breast directly over the axis of the stem 6, describing a circular cut between these points; but in order to make the latter part of the cut shallower than it would be under these circumstances an offset 30 is made in the cam-path. This is engaged by the cam-roller'28- after the cutter has traversed about a third of the heel. The offset causes the work to be swung slightly away from the cutter, so that less material is cut out 3 but the point at which the cutter emerges on the heel will always be the same, owing to the location of the breast over the axis of the stem. In order thatthe heel may be engaged only by the forward edge of the cutter, its shaft is olfset slightly from the center of the machine, as shown.

It is to be notedthat the present invention is clearly distinguished from those heel-concaving machines of the prior art in which the concavity conforms to the contour of the cutter, because in the present machine the shape of the concavity depends upon the relative movements of the cutter and work-holder and upon the angle of presentation of the I believe I am the first to make a heel-concaving machine in which the relative movements of the work and cutter are on curved lines, a construction which manifestly possesses important advantages over prior machines, in which such motion is rectilinear.

The present invention -is broad and generic in character and by no means limited to the embodiment illustrated in the accompanying drawings and described herein, as the same may be embodied in other and widely-different forms without departure therefrom.

Having thus described the invention, what 1. A heel-concaving machine having, in combination, a rotary cutter, a work su port, and means for imparting to the wor support and the cutter a relative motion to cause the cutterto cut transversely of the upper surface of the heel so as to concave said surface, the axis of rotation of the cutter being inclined during the cutting operation to the said surface of the heel but substantially parallel to the plane of motion of the work-support, substantially as described.

2. A heel-concaving machine having, in combination, a rotary cutter and means for holding a heel and moving it past the cutter in a direction inclined to but in the same plane with the axis of rotation of the cutter, substantially as described.

3. A heel-concaving machine having, in combination, a continuouslyrotated routing-cutter, a rotary turret, and a plurality of work-holders carried thereon, the cutter and turret being so positioned that heels held in the holders will come in contact successively with the cutter as the turret is rotated, substantially as described.

4. A heel-concaving machine having, in combination, a rotary routing-cutter, a rotary turret carrying work-holders, and means for continuously rotating the turret to bring the upper surfaces of heels held in the workholders successively into contact with the cutter, substantially as described.

5. A heel-concaving machine having, in combination, a cutter, means for holding 'a heel to be operated upon, means for moving the heel into engagement with and past the cutter, and independent means for varying the depth of the cut during the cutting operation, substantially as described.

6. A heel-concaving machine having, in combination, a cutter, a rotatable turret, a work-holder mounted on the turret and rotatable about an axis parallel to the axis of of the turret, means for rotating the turret to bring a heel held in the holder into contact with the cutter, and means to turn the holder about its axis on the turret, while the IOO cutterl is operating on the heel to vary the l combination, a cutter, a work-support, means for moving the worksupport past the cutter, and means for varying the path of movement of the work-support during the time it isl passing the cutter, substantially as described;

8. A heel-concaving machine having, in combination, a rotary cutter, a work-support, means for moving the work-support past the cutter in a general direction inclined to the aXis of the cutter, and means for varying the path of movement of the work-support during the time it is passing the cutter, substantially as described.

9. A heel-concaving machine having, in combination, a cutter, a n work support, means for moving the work-support past the cutter on a curved path of motion, and means for flattening the curvature of the path of motion of the work-support during the time itis passing the cutter, substantially as described.

10. A heel-concaving machine having, in

c combination, a rotary cutter engaging the upper surface of the heel, a worksupport, and means for positively moving the worksupport and cutter relatively to each other to cause the work to be presented to the cutter at such angle and to so vary said angle during the concaving operation that the transverse section of the concavity is Hattened at the center and so that the longitudinal section of the concavity is curved at one end 'and substantially flat at the other, substantially asdescribed.

11. A heel-concaving machine'having, in combination, aA rotary cutter, a work-support, means for moving the Work-support past the cutter to present the work to the cutter .at an angle whereby the section of the cut normal to the plane of motion will be substantially elliptically cylindrical and means for moving the work-support during the cutting operation away from the cutter whereby the section of the cut in the plane of motion will be curved and flattened, substantially as described.`

12. A heel-concaving machine having, in combination, a rotary cutter, a worksu port, primary means for moving the wor support past the cutter on the arc of a circle and secondary means for swinging the worksupport vas it passes the cutter on a center remote from the primary center of motion, substantially as described.

13. A heel-concaving machine having, in combination, a rotary cutter, a work-support, means for revolving the work-support to carry it past the cutter and means for oscillating the work-support as it passes the cut-v ter, substantially as described.

14. A heel-concaving machine, having, in combination, a rotary cutter,l a Work-support, means for revolving the work-sup ort to bring successive portions of the wor in contact with the cutter, and means for oscillating the work-support to vary the contour of the cut, substantially as described.

15. A heel-concaving machine, having, in combination, a rotary cutter, a work-support, means for revolving the work-support to carry the Work past the cutter, and a cam to impart to the cutter and the work-support a relative se arating movement, substantlally as described).

^ In testimony whereof I afIiX my signature. in presence of two witnesses.

' GEORGE E. WARREN. Witnesses: HORACE VAN EVEREN, FARNUM F. DoRsEY.