US2602927A - Work positioning means for heeling machines - Google Patents

Description

July 15, 1952 5, COOK 2,602,927

WORK POSITIONING MEANS FOR HEELING MACHINES I Filed Sept. 22, 1950 2 sl-xEETs-s'imm 1 V 1, v 20 z 54 Z /0 44 'f/ -H L Q 7 Z 3 r x v Inventor 25' 36 50 r Sidney H Cook 5 /5 hi Atto e 24 y 15, 2 s. H. COOK 2,602,927

WORK POSITIONING MEANS FOR HEELING MACHINES Filed Sept. 22, 1950 2 SHEETS-SHEET 2 Inventor Sidney H Cook Patented July 15, 1952 WURKPOSITIQNING MEAN S" FOR HEE'LING 'M'ACHINES -Sidney-H. GnuIt,liannibaLJA/Iou assigi or to Unitfidi .Shoe;Macl1inery .QorporatiomElemington,.N. .L',

a cornorationof; New Jersey.

Applicationfieptemhcr 22, 1950,-SerialNoJISSAHB A .Qlaims.

1. Thieinventionmelatesito machinesafonattachingpheelsi'tu shoes, and: is illustrated herein ,as embodied in a heel holder-adapted for; use .a

.heeling machine ofithe. type-disclosed in United .Statesv Letters Patent .No. .'1,15.'7-,68.8; granted on Catcher-.26, 19.15, upon..-an application of L. L. Glidden.

In the operationof. thel'Gliddenmachine, two heel-sections, suchas a1base and .-a top lift, are

broughtzsuccessively intoregister-with the nailing die, and are attached to the shoe bysuccessive .nail driving :operations. Suchcontrolof theheel sections is provided by a; swinging. holder having "tworeompartments, onefor. eachgheel section, the

-holderbeingautomatically.swung,;near therend of an: operating cycle of: themachineandafter the heel basehas "beenxapplied-to .theshoe; to. bring :the..-;top -lift:,into. positionforattachment to. the

:shoesduring the succeeding operation of; themachine. This shifting movementtof the "heel holder iseficoted automatically by a;normallyenerg ized "spring loaded mechanism a which :is actuated :at a predetermined-point in the-work releasing movement-rot the pressure. applying mechanism.

For: attaching the usual type of .rubber. heel,

which commonly comprises .a thin leather base and .a thiclser rubber top lift, the. machine may be fitted with a different form of heel holder which centers, at once, both heel sections over :thedie, and with respect to the-shoe; the base and top lift being applied-simultaneously,tothershoe by asingle, operation of the; nail driving. mecha- "nism. One such holder, as-disclosedinlthelReardon :Patent No. 2,277,182, .has..a-heel ring for holding therubber toplift, and-.aset oflfingers which engage the. heel base .--at its sides .and rear end, and centersit over the top lift. Because it is common to employ with a certain-rangeof sizesof heel bases atop lift-large enough forall such bases, the toplift usually oyerlapstheheel base slightly, and. therefore, the. fingers which engage theheel base.v vItnow is evidentthatthe fingers may interfere with. the removal of the work from, or the insertion of a top lift into .the

.-holder,.if .they are. not separated to. permit the toplift to-pass .freelybetweenthematsuch times.

This'difficulty is a voidedby. the Reardon..inventionwhichzmakes provisionior automatically separating thefingers which engage the heel base, the'nail drivin v movement. of thenail driving mechanism-being utilized. for. this purpose.

The object of the. presentv invention is to, simplify and. improve upon the construction and operation of, mechanismof. this type, and to. this end the invention provides, in. a. novelarrange .ment, movable-fingersin:aheekholden adaptedzto center simultaneously .two .heel sections over the nailingdie of a heelingmachine of-the Glidden type, andtoperating mechanism for "theifing-ers whichis actuatedto. separate. and close thefingers automatically, in response to. the operation, of the pressure applying-and nail loading mechanisms, respectively, of such a machine.

The illustrated operating emchanism for the heel holder comprises a spring loadedymember which is releasably lockedhy a latchin, its energized position, causing the-fingers .at ,thisstime to bepositionedinthBir:closed-or operativerelation. However, upomreleaseof t'he latch, during thework releasing movement of the pressure -ap plying mechanism, the fingers -are,--automatically opened in-o-rder to. facilitate removal ,of the work from the holder, andthesupplyof heel sections thereto for the succeeding heeling operation.

As. is common. inheeling machines of this type, theillustrated .heel holder is mounted to slide to one-side of. thenailing die. in response to movementover. the die of the usual loader. blockifrom which anew supply of nails is delivered tQthe die. Then, as the loader. block is moved backto its original position, the -.heel.ho1der returns. to its operative position under. the influence ofa spring.

Eachof these motions of the heel holdercontributes materially .to vtheoperatingcycle of the operating means ,for the fingers. Thatis, the operating mechanism for the heel holderisso constructed, in accordance with another. feature of the. invention, thatsliding movementof the holder away from. the die is utilized .lto-reseuthe above-mentioned spring loaded. member ingits energized position. .At this time. the heel-positioning fingers remain. separated, .butjn response to the return movement of the heeLhulder. toits 'operativeposition the same operatingmechanism causes .the fingersto be moved into, their. ,closed relation, whereby .a heel. sectionadisposedz between themiis centered overthe nailing die-when the heel .holder has been -.returned-- to itsoperative position.

These. and other features. of the. invention will now-bedescribeddn greater detail inthefollowins Specification, with reference. to. .the. accompanying drawings, and will-be defined in. the

claims. I

In the drawings,

Fig. .1..i11ustrates in man one; embodiment of myinventionlin a .heelingzmachine;

Fig.2 is,a..rearrelevation Qtapartof thestruc .tureshown in Fig,...1; I

i .31 is a. diagrammatioal .view in plan illustrating the operation of the means for opening and setting or closing of the heel positioning fingers provided by the invention; and

Fig. 4 is a side elevation of the upper part of the above-mentioned Glidden machine, in which the present invention is illustrated as embodied.

The heel holder illustrated herein is, in many respects, constructed and mounted like that of the machine disclosed in the above-mentioned Reardon Patent No. 2,277,182, and comprises the following parts which will be denoted by the same reference characters which have been applied to the corresponding parts of the Reardon structure. A carrier I8 is mounted to slide laterally of the machine on ways including a rod 20, and is arranged to receive a heel ring 24 having an opening which closely receives a rubber toplift L. A heel base H is positioned centrally over the lift L between a fork 44 and a pair of fingers 25, 25. The fingers are pivoted at 28 upon a support 29 which is mounted for adjustment upon the carrier IB lengthwise of the fingers. The fingers are geared together at 21, so as to swing equally in opposite directions, and therefore, when in engagement with the opposite sides of the heel base H, they position the forward end of the heel base laterally with respect to the toplift L. The rear end of the heel base is similarly positioned with respect to the topiift by the fork 44, which also is yieldingly urged forwardly of the machine to I hold the breast of the heel base in engagement with the hooked ends 42 of the fingers 25, 29 whereby the heel base is also positioned lengthwise thereof with respect to the toplift.

The carrier 58, as illustrated in Fig. 1, is at 3..

the righthand extremity of its travel upon the rod 20, the toplift and heel base being positioned at this time centrally over the nailing die 9 (Fig. 4) which is carried by a crosshead I0. The carrier is releasably locked in this position by a latch I 52 (Fig. 1) which is integral with an arm 59 mounted to swing (at 50c) upon the carrier. As is well understood in this art, fastenings, such as nails, are supplied to the nailing die prior to a nailing operation from a loader 54 which is mounted to swing centrally over the nailing die. When the loader is thus moved by the operator it first engages the arm 50, operating the latch 52 to unlock the carrier and then, after the arm 50 engages the adjacent side of the carrier, it

causes the carrier to be moved to the left along the rod 20 until the loader is alined with the nailing die. After the nails have been dropped into the die from the loader the latter is returned to its original position and is followed by the carrier I8 which is moved to the right by a spring (not shown) until it returns to its operative position.

Operating mechanism for the fingers 25, 26, provided by the present invention, is arranged to hold the fingers in their closed positions, prior to and during a nail driving operation, and later automatically to move the fingers away from the heel base, toward the end of a cycle of operation of the machine, in order to facilitate the removal of the work from the machine. Furthermore, the above-described lateral movement of the carrier is utilized both to reset the operating mechanism for a succeeding operation, and also to close the fingers into their operative positions.

I09 at the rear of the machine, this crank arm corresponding to that designated by the same reference character in Figs. 5 and 6 of the abovementioned Glidden patent. When in its normal operative position the arm I09 is fixed and, through the stud 68 and rod 60, causes the fingers 25, 2G to be held against a heel base inserted therebetween. In order to bring the fingers into this desired relation to the heel base the length of the rod 60 may be adjusted by means of a turnbuckle I0. Toward the end of an operating cycle of the machine, and after a nail driving operation has been completed, the arm I99 swings rearwardly, first bringing the stud 69 to the rear end of the slot 60, and thereafter pulling the rod 60 rearwardly and causing the fingers 25, 26 to be separated until the finger 25 engages a stop I2 which is adjustably fixed to the left-hand side of the carrier I8 by a screw I4. The finished work may now be removed from the machine without interference between the fingers and any part of the heel. The mechanism next to be described and of which the crank arm I09 is a part, is the same as in the above-mentioned Glidden machine. Reference may be made to the Glidden patent for a complete understanding of the relation of this structure to the entire machine and its mode or operation.

The arm I09 is fixed to the upper end of a rock shaft III which is journaled in a bracket II2 fixed to the rear of the frame of the machine. One end of a spring II3, coiled about the rock shaft, is connected to the bracket II2, the other end being fixed to a collar on the lower end of the rock shaft. The spring is arranged constantly to urge the arm I09, as viewed in Fig. l, in a clockwise direction. Such movement, however, of the crank arm I99 is normally prevented by a locking device which comprises, with an arm H4 integral with the arm I09, a beveled latch II5 adapted to be engaged by a keeper II8 mounted upon the upper end of an arm I I9 which is fixed to the bracket H2. The latch H5 is mounted to slide vertically in the arm IM and is normally held in its upward position, as shown in Fig. 2, by a spring I I1. At the beginning and end of an operating cycle of the Glidden machine jacking pressure is applied and relieved, respectively, by mechanism including a rod 22 (Fig. 4) at the rear of the machine, a walkingbeam I9, a plunger I4, and a swinging jack I2, the construction, arrangement and operation of which parts are fully described in the Glidden patent. For the purposes of the present disclosure it is sufllcient to state that the clamping of the shoe against the nailing die 9 is accompanied by rising of the rod 22 from the position in which it is illustrated in Fig. 2, and later, with the release of clamping pressure, the rod returns downwardly to its illustrated position. This downward movement of the rod is utilized to release the latch II5 from the keeper I I8, whereby the arm H9 is freed and the fingers 25, 29 are separated.

To this end, a bracket I2I fixed to the rod 22 has mounted therein, for horizontal sliding movement, a trip I22 which is yieldingly urged forward by a spring I23. When the rod 22 rises, the trip is moved into engagement with a beveled head I25 on the lower end of the latch H5, and is pushed rearwardly in the bracket I2I by the head I25 without having any further effect. As the trip I22 passes off the head I 25 it springs forwardly over the head and later, when the rod 22 is lowered, engages the upper surface of the head I and pulls the latch H5 away from the keeper H8. The arm I09 now suddenly swings from its full line position (Figs. 1 and 3) to its dotted line position (Fig. 3) under the infiuence of the spring H3, pulling upon the rod 69 which opens the fingers 25, 26 into their dotted line position. The corresponding movement of the arm H4 causes the head I25 to be moved away from the trip I22, whereby the latch H5 again rises to its normal upper position under the influence of the spring lll. At this time a heel attaching operation will have just been completed.

In preparation for the next heeling operation the operator, after removing the finished work from the machine, swings the loader 54 to the left, causing the fingers 25, 25 (with the carrier l8) to be moved from their dotted line position (Fig. 3) to their dash line position. Such movement of the fingers, because it is parallel to the rod 20, causes the rod 60 to pull the arm I 09 from its dotted line position to its full line position, when the latch H5 becomes re-engaged with the keeper H8 to hold the arm in the latter position. When the loader 54 is returned to its inoperative position, allowing the carrier 18 to return to its normal position over the nailing die, the rod 69 in being moved to the right (Fig. 3) moves rearwardly relatively to the stud 58 until the stud becomes seated in the forward end of the slot 66, this action taking place during the first part of the movement of the carrier 18 toward the right. During the remainder of such movement of the carrier the rod 60 pushes the arm 64 forwardly to move the fingers from their dash line position into their solid line position in which the fingers are properly spaced, assuming that the turnbuckle has been adjusted, to hold a heel base closely between them, and centered over the lift L.

Having described my invention, what I claim as new and desire to protect by Letters Patent of the United States is:

1. In a heel attaching machine having a nailing die, a jack for a shoe, and pressure applying mechanism operable to cause said jack and die to grip and release the shoe before and after a heeling operation respectively, in combination, a, heel holder having oppositely movable fingers for centering a heel section with respect to said die, and means actuated by the work releasing movement of said pressure applying mechanism for retracting said fingers from the heel of the shoe.

2. In a heel attaching machine having a nailing die, a jack for a shoe, and pressure applying mechanism operable to cause said jack and die to grip and release the shoe before and after a heeling operation respectively, in combination, a heel holder having oppositely movable fingers mounted thereon for centering a heel section with respect to said nailing die, spring-loaded mechanism for operating said fingers, and means for latching said spring-loaded mechanism in its energized position whereby said fingers are positioned in their closed relation, said latching means being operable in response to the work releasing movement of said pressure applying means to release said spring-loaded mechanism whereby said fingers are opened.

3. In a heel attaching machine having a nailing die, a jack for a shoe, and pressure applying mechanism operable to cause said jack and die to grip and release the shoe before and after a heeling operation respectively, in combination, a heel holder having oppositely movable fingers mounted thereon for centering a heel section with respect to said nailing die, spring-loaded mechanism connected to said fingers for opening and closing them, and latching means for holding said spring-loaded mechanism in a predetermined energized position in which said fingers are p0- sitioned in their closed relation when said holder is in its operative position over said die, said latching means being operable in response to the work releasing movement of said pressure applying means to release said spring-loaded mechanism whereby said fingers are opened, said holder being mounted to move away from said die in 0pposition to the force exerted by said spring-loaded mechanism to return the latter to its energized position, said spring-loaded mechanism being constructed and arranged to return said fingers into their closed relation in response to movement of said holder into its operative position over said die.

4. In a heel attaching machine having a nailing die, a jack for a shoe, and pressure applying mechanism operable to cause said jack and die to grip and release the shoe before and after a heeling operation respectively, in combination, a heel holder having fingers for centering a heel section with respect to said nailing die, said fingers being mounted to swing upon said holder with equal and opposite movements, mechanism for opening and closing said fingers comprising a spring-loaded member and a link connecting said member and said fingers, a latch for holding said spring-loaded member in its energized position, and means operated by the work releasing movement of said pressure applying means to trip said latch permitting said spring-loaded member and link to opensaid fingers, said holder being mounted to slide in a direction to tension said link and pull said spring-loaded member into its energized position, said holder being movable in the opposite direction to shorten the distance to said spring-loaded member thereby to cause said link to clos said fingers upon a heel section disposed between them and to center the heel section with respect to said die when said holder is returned to its operative position over said die.

SIDNEY H. COOK.

No references cited.

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