US1581101A - Heel-making machine - Google Patents

Description

April 20 1926.'

H. N. COPP HEEL MAKING IACHINE Filed Nov. 15-l 1920 3 Sheets-Sheet 1 1 ..0 1u. l 8 5. l P P O C N. H 6. 2 9 l pril 20 HEEL MAKING MACHINE Filed Nov. 15

1920 f3 Sheets-Sheet 2 1g. Z. Exim April 20 ,1926. 1,581,101

H. -N. CQPP HEEL l IAKING* ummm 'A Filed Nov. l5 1920 3 SheetsSheet 3 1.58am 'raar reiten.

HARRY N. COPP, OF SW'AVIPSCTT, MASSACHUSETTS, ASESIIGIJOEL TO UNITED SHOE MACHINERY CORPORATIGN, OF FATERSON, NEVI JERSEY, YA CORPORATION OF NEW JERSEY.

HEEL-MAKNG MACHNE.

Application lecl November 15, 1920. Serial 110.424,219.

To all v't0/7mm t may concern:

` Be Ait known that l, Hanni N. Corr, a citizen of the United States, and resident of Swamps'cott, in the county of Essex and State of Massachusetts, have invented certain improvements in Heel-lilaking lvlachines, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating -ike parts in the several figures.

This invention relate-i to heel making machines and is herein described and illustrated as embodied in a. machine for producing, practically automatically7 heels. comprisingpieced and whole lifts in combination.

vleels of the character described have been produced commercially for many years by cutting and assembling lifts by hand int-e a die supported upon a bench with its cutting edge uppermost. This is known in the trade as the Haverhill die method.

Any hand method cf producing articles made in such quantities as heels must, of

' necessity, be slew and involve a relatively high labor cost. The object of the present invention is to produce a machine for making heels, similar to those heretofore made by the Haverhill die process, in an expeditious mannera greatly increasing the preduction of an operative and correspondingly reducing the labcr cost per unit of product.

in important feature of the invention contributing te this end consists in means for retrieving a plurality ef pieces of lift material from a support .upcn which they are assemblial with their edges abutting, transferring them tc, and cuttin them into a die. By a. sui'licient numaer of repetitions of this operation the desired number of complete lifts is accumulated in the die. ln the preferred ferm of the invention nailing nicchanisin is also provided for securing the lifts together while they are in the t ic. ln the illustrati ve embodiment of the invention herein shown Vthe lifts are automatically nailed together as they are assembled in the die and the heel blank is automatically ejected .from the die.

inasmuch heels of the type above described usually contain one or more whole lifts, in combination with the pieced lifts, a further feature cf tlie'invcntion consists in the combination with the mechanism above mentioned of mechanism operating in proper time relation thereto for producing lrom a maggazine and inserting or cutting into the die one or more lifts which may or may not have previously been died out to approximately their ultimate size andv shape. rlhese and ether features of utility in the invention will be better understood and appreciated from reading the following detailed description of ene embodiment thereof in combination with the accompanying drawings, in which- K Figure 1 is a side elevation of the illustra-tive machine, parts of the base being broken away to reveal the interior mechanism;

Fig. 2 `is a view partly inelevatlion and partly on a section, taken substantially at right angles to Fig. l;

Fig. 3 is a plan view of the machine;

Fig. d is a view illustrating a detail of the lift picking mechanism for whole lifts;

Fig. 5 is a view showing pieces of heel lift stock fitted together, ready to be operated upon by the machine;

Fig. 6 is a perspective view of a heel produced by the machine; and

Fig. 7 is a view of a detail of the heel blank releasing mechanism.

Referring now to the drawings, 10 indicates a base or frame of suitable design and construction to support the-operating mechanisms of the machine. A bracket 12 is bolted to the machine base and supports a stationary, upwardly facing cutting die let into which the heel lifts are cut and assembled. Two cutting plates 16, 18, operating alternatively to cut lifts into the die 14 are actuated by mechanism presently tobe described. The cutting plates 16, 18 are carried respectively by arms 20, 22 projecting horizontally, at right angles to each other, from a swinging head 24 carried by the-upper end of a vertically reciprocable and horizontally oscillatory plunger 26 guided for .movement in vertical bearings in the base 10.

A bracket 28 is gibbed to the front lot' thev base 10 and may be adjusted vertically by means of a screw 30 upon which it is supported. The bracket 28 carries a table 32 having a spindle 34 extending downwardly seV lUU

into a suitable borek in an enlarge-d cylindrical portion 36 of the bracket. The lower end of the spindle 3ft rests upon a substantial spring 38, the position or tension of which may be adjusted by a screw 40. A det-achable plate 42 is secured by screws 44 in a recess in the top of the table 32, with the upper surface of the plate substantially flush with the surface of the table. The plate 42 has marked upon it an outline 46 identical with the out-line of the cutting edge of the die 14. It is intended that plates be provided with outlines corresponding to all the dies with which the machine is equipped and, the outside dimensions of all the plates bilng identical, they are readily interchangea e.

The end of the arm 20 is hollowed out to receive a needle plate 48 which is provided with a plurality of pointed needles 50 projecting through holes in the cutting plate 16. The needle plate 48 is backed up by a spring 52 which surrounds a spindle 54 projecting upwardly from the needle plate and pivoted at 56 to a lever 58. The lever 58 is pivoted between its ends, to a vertically reciproeable actuating rod 62, the lower end of which lis arranged to engage, at certain times, a stationary lug 64 projectingv from the base member 10. t

The outer end of the arm 22 is provided with an internally threaded, vertical opening in which is adjustably secured a supporting member 66 for the cutting plate 18. vThe supporting member` 66 also carries a plurality of fingers 68 arranged to engage the edges of a lift or piece of lift stock and pick it up. The lower ends of the fingers 68 are curved outwardly, as shown at 70, and each nger is 'pivotally supported in a block 7 2 arranged for radial adjustment with respect to the .member 66 by means of a screw and slot connection 'i' 4. A spring 76 tends constantly to swing the linger 68 inwardly about its pivot andoutward movement of the linger against the tension of the spring is effected by a rod 7 8 havingatk its lower end a head arranged to engage arms 82 which project inwardly, substantially at right angles, from the upper ends of all the fingers 68. The upper end of the rod 7 8 ispivotally connected to one end of a` lever'84 fulcrumed at86 in a bracket 88 carried by the arm 22, theopposite end of the lever 84 being pivoted to a vertically reciprocable rod 90. The lower end of the rod 90 carries a pivoted dog 92, shown in Fig. 7, which may swing freely in one direction with respect to the rod, but not inthe other. The lower end of the dog V.is arranged to engage astationary,'inclined cam face 94 as the arm 22is swung horizonltally over the cam.

A stationary table 98, vat the side of the machine opposite to the table 32, supports a reciprocable pusher 102 connected by a link 104 to a bell crank lever 106 which is rocked about a stationary pivot 108 by a rod 110 connected to a cam lever 112, the operating means for which will presently be described.

Power for driving the machine may be derived from any suitable source such, for example, as a belt 113 driving a pulley 114 mounted upon the main driving shaft 116. The opposite end of the driving shaft 116 carries a crank 118 which is operatively connected, through a connecting rod 120 and a rotary thrust bearing 122 to a heavy screw 124. rllie screw 124 is threaded into the lower end of the plunger 26 and they upper end of the screw is connected by a rod 126 to an adjusting hand wheel 128 at the top of the machine. 1t will be apparent that, with this construction, the plunger and the arms 20, 22 carried thereby, will be reciprocated vertically as the driving shaft 116 rotates.

The driving shaft` 116 is connected by gearing 130 to a shaft 132 carryinga worm 134 which meshes with a worm wheel 136 upon a cam shaft 138. The cam shaft 138 carries two cams, the center lines of which are indicated in Fig. 1 by dotted lines 140 and 142..

rEhe cam 140 is engaged by a cam roll 144 upon Vthe lever 112 'which is mounted to oscillate about a stationary pivot 146. The cam 142 engages a cam roll 148 upon a lever movable about a stationary pivot 152 and connected by a rod 154 to one arm 156 of a bell crank lever, the opposite arm 158 of which has, at its upper end, a gear segment 160. The gearsegment160 meshes with corresponding gear teeth upon a sleeve 162 which is rotatable in the base 10 but is restrained from vertical movement therein. A splined connection 164 between the sleeve 162 and the plunger 26 permits the plunger to reciprocate verticallythrough the sleeve but causes the plunger to partake of any horizontal rotary movement of the sleeve.

It will be apparent from an inspection of Fig. 1 that the cam 142, which oscillates the plunger 26 and swings the arms 20, horizontally, has three rises; while the cani 140, which is fixed with relation-to the cani 142 on the shaft 138 and which operates the blank feeding pusher 102, has but one rise. Consequently three horizontal oscillations of the head 24 and arms 20, will occur for each reciprocation of the pusher 102. By this organization the machine is'adaptod to produce the heel blank shown in Fig. 6, consisting of two' pieced lifts and two whole lifts. The relative timing of the driving shaft 116 and the cam shaft 188 is such 'that the shaft 116 makes three revolutions to each revolution of the cam shaft; the plunger 26 is, therefore, reciprocated vertically after each of its horizontal oscillations. Y

Any suitable clutch and brake mechanism 170, controlled 'by a treadle 172, may be llO ejector rod 188, provided with an adjusting turn buckle 190 and operated by a roclf'er arm 192, provides for imparting a positive ejecting movement to the'plate 184. The arm 192 is secured to a rocker shaft 194 having a short arm 196 arranged to be engaged by a pin 198 upon the side of the worm gear 136.

The operation of the machine isv as follows: Let it be assumed that the magazine 100 contains a supply of whole lifts or pieces from which whole lifts maybe cut.

Preferably, the pieces in the magazine 166.

will be of the same shape as the die 14 and of the same size as the die, or only slightly larger. As shown in Fig. 1, the lower end of the magazine is spaced sufliciently above the table 98 to permit two lifts to be pushed out at a time and the pusher 102 is sutilciently thick to engage two lifts at a time.

Pieces of scrap leather a, b, o, the edges of which have been straightened, are fitted together, with their edges abutting, on the table 32, a sufficient number of pieces being used to cover the outline 46. The head 24 now swings to a position in which the arm 2O is over the table 32, and the plunger 26 moves downwardly until the plate 16 is pressed upon the pieces a, b, 0, the needles 50 entering the said pieces and the spring 38 yielding, if necessary, to accommodate the thickness ofthe Vstock and the fixed stroke of the plunger 26. The plunger 26 next rises, the pieces a, b, c being picked up by the needles and their relation to each other being preserved. The arm 20 now swings through 90 degrees to a position over the cutting die 14, the arm 22 at the same time swinging to a position over the t-able 98 but, inasmuch as no lifts have yet been fed from the magazine 100, the linger 68 will find nothing to pick up. The plunger 26 descends, causing the stock held against the underside of the cutting plate 16 to be cut into the die 14, thus cutting a' complete pieced lift into the die at a single stroke. As the head 24 descends to cut the pieces into the die 14 the lowter end of the rod 62 will engage the projection 64, causing the pins to be withdrawn from the stock and avoiding any danger of their removing the lift from the die. The plunger 26 rises and the arm v2Oagain swings to a position over the table 32, upon which, in the meantime, another group of pieces a, I), o has been arranged to cover the outline 46. rEhe plunger descends, thepieces are picked up as before, carried to a position over the die 14 and cut into the die. Upon this swinging movement of the arm 2O to a position over the die, and the arm 22 to a position over the table 98, the pusher 102 is actuated to push two lifts from the magazine 106 out upon the table 98 into a position where they will vbe engaged by the fingers 68 as the plunger 26 descends to cut t-he second pieced lift into the die. rPhe fingers 68 are pressed by the spring 76 against the edgesv of the lifts with suiiicient force to pick up the pair of whole lifts when the plunger 26 again rises and when the head 24 again swings to position cutting plate 1.8 over the die 14and the plate 16 over the table 32 the two lifts held in the fingers 68 are car-k ried to aposition over the die. .The next l.descent of the plunger 26 causes these lifts to be pressed or cut into the die on top of the twoy pieced lifts already therein,

, As lifts are successively cut into the die, as above described, the plate 184 yields, the lifts being forced upon the nails contained in the tubes 186. As the head 24 rises after the pair of whole lifts is pressed into the die, the pin 198 engages the lever Varm 196, causing the rod 188 to engage the ejector plate 184 and positively eject the heel from the die. This occurs simultaneously with the upward movement of the fingers 68 and, at the end of such movement, the plate` 184 is flush with `the top `of the die, the` heel being held by the fingers 68. `As the head 24 a'gain swings,-the dog 92, at the 'lower end of the rod 90, rides over the cam 94, causing the lingers to release the heel and drop it into a discharge chute 200. During the movement of the arm 22in thereverse direction the dog 92 swings idly over the cam, avoiding the release from the fingers 68 of lifts beingcarried thereby from the l table 98 to the die 14,

The scrap resulting from the cutting operations falls into a receptacle surrounding the die 14 and is discharged bya chute 262.

The series of operations above described is repeated indefinitely, producing heels at a very rapid rate compared with the common method of cutting them into a Haven hill die by hand.`

A valuable adif'antage ofthe present in vent-ion, as compared with other power operated die cutting machines that the operative, in handling the pieces of stock, is never required to place his hands near the cutting die and thus the danger of multilation of the fingers, which ris a drawback to most power-operated die VcuttingV machines7 is eliminated. Furthermore, a

complete lift is produced at `each cutting stroke of the machine, in contra-distinction to the practice of cutting one piece at a time into the die as is customary in the methods heretofore used. f

Having described the invention, what is new and desired to be secured by LettersV Patentis:

l. In a machine of the class described, the combination of a lift cutting die, a support upon which a plurality of pieces of stock may be arranged with their edges abutting, and means for removing said pieces from the support and transferring them to the die. c

,2. In a machine of the class described, the combination of a lift cutting die, a support upon which aV plurality of pieces of stock may be arranged with theiriedges abut-ting, .and means for removing said` pieces from' the support and thereafter cutting them into the die. Y

. v. In a machine of the class described, the

combination of alift cutting die, a ,support upon which a plurality of pieces of stock may be arranged with their edges abutting, and means for removing `allof said pieces simultaneously from the support andthereafter cutting them into the die.

4. In a machine of the `class described, the combination of a lift cutting die, a support upon -which a plurality of pieces of stock may be arranged with their edges abutting, and means vfor .picking up said pieces, maintaining their abutting relationship, andcutting-them simultaneously into thedie. Y

5, In a machine of the class described, the combination o f a lift cuttingdie, afsupport for lift stock, and a cutting'plate movable alternately between positions in which it is ,in register :respectively with ithe support andthe die, said plate being provided with means for picking up stock from the support.

In agheel making machine, the combination of a klift cutting die, a :support upon which a plurality of small ,pieces of stock may be assembled with their edges abutting, a cutting plate :mounted to -oscillate from a position over the support to a position over the die, and needles constructed and arranged to be projected through theplate topick up the pieces of stock andihold-them against the plate whilethelatter is moving from the support to the die.

7. In a heel making machine, the combination of a lift cutting'die, a pluralityiofsupports 'for 'pieces of lift stock, a plurality of .cutting plates movable alternately .into register-with the die a.iulwitl1.tlie respective 4stock supports, and moans associ-ated with each cuttingzpl'ate forfpicking up `stockifrom one of the supports.

S. In 4a'heel makingV machine, the combina- 'tion of a stationary lift cutting die, a vertialternately into register .with the vdie rand with the respective supports.

9. Ina heel making machine, the combination of a lift cutting die,.a support for lift stock, a cutting plate movable alternately between a position in which it is in register with the die and :a position in which it is ih register with the support, stock holding means associated with the cutting plate, and an ejector co-operating with the die to eject a cut blankfrom the die and insert it in the holdin (Y means.

l0. an upwardly facing lift cutting die, `alift carrier movable over thedie, and means for forcing lifts upwardly out of the die into the carrier. c y

l1. In a heel making machine, the combination of a `lift cutting die, a support upon which piecesof lift stock suiiicient to produce a complete lift may be assembled with th-eiredges abutting, a magazine for whole lift pieces, Kmeans .for feeding ,pieces from the magazine, and means for transferring and .cutting into the die first assemblages of pieces to .produce pieced .lifts and then pieces to produce whole lifts.

l2. In a heel .making machine, 'the combination of alift cutting die, a reciprocable, oscillating headicarrying a vpair of arms arranged at right angles to eachother, cutting lplates disposed upon the arms to be brought alternately into register with ythe die by theoscillation=ofthe head, andpower operated means for. alternately reciprocating the head tol move a` cutting v plate ,into cutting engagement with-thedie and oscillatingfthe head to move the other Vcutting Iplate linto regis-ter with the die.

13. In a machine of the class described, the combination of a-liftreceptacle, reciprocating means for pressinglifts into thereceptacle, a stock fmagazine, kmeans for feeding pieces of stock from the magazine, an actuator -fcrthe feeding means,.and means for reciprocating said pressing means a plurality of times for*eachoperationof the -actuator for the feeding means.

'14. In aheel v making machine, the combinationofmeans for cutting a ypieced lift fromheelstock, 4and means for assembling ,with the said lift another lift-produced out- -sidevof the machine'.

@15. In a heel making machine, the combination of mechanism kfor cutting scrap material into apecedheel lift, and means -for assembling with the piece'd lift a whole lift produced outside ofthe machine.

In a heel machine, thecombination of '16. In :L heel machine, the colnl'iinzition oi die, feeding means 'for 'feeding pieces of n, lift magazine, :t lift cuttingv die of the stock from the magazine to a predetermined 10 saine shape as theinagazine, and means for position, and means 'for transferringthe transferring a lift from the magazine tothe pieces from said position to e position in die. register with the die.

17. In a heel machine, the combination of n. testimony whereof I have signed my al lift cutting die, a magazine for holding name to this speeiieation. pieces of lift stock of the same shape as the HARRY N. COPP.

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