US2493859A - Heel-pricking means - Google Patents

Description

Jan. 10, 1950 T. B. CLARKE ET AL 2,493,859

HEEL-PRICKING MEANS Original Filed Jan. 16, 1945 4 Sheets-Sheet l [11 van for; Thomas Baggozt Clarke Arthur Alan R1 w'ngfon Jan. 10, 1950 T. B. CLARKE ET AL HEEL-PRICKING MEANS.

4 Sheets-Sheet 2 Original Filed Jan. 16, 1945 [n ventors' Thomas Baggotzf CZar/re Arthur Ala n Rz'umgton Jan. 10, 1950 T. B. CLARKE ET AL 2,493,359

HEEL-PRICKING MEANS Original Filed Jan. 16, 1945 I 4 Sheets-Sheet 3 Em ii'ii. 5.1%

fnvenfors Jan. 10, 1950 T. B. CLARKE ET AL 2,493,859

HEEL-PRICKING MEANS Original Filed Jan. 16, 1945 v 4 Sheets-Sheet 4 [nu enfors Thomas Baggazt C/ar/re Arthur A/an R/v/ngwn Patented Jan. 10, 1950 HEEL-PRICKING MEANS Thomas Baggott Clarke and Arthur Alan Riving-v ton, Leicester, England, assignors to United Shoe Machinery Corporation, Flemington, N. J.

a corporation of New Jersey Original application January 16, 1945, Serial No.

573,026. Divided and this application September 20, 1947, Serial No. 775,286. In Great Britain February 4, 1944 This invention relates to a pricking machine which is illustrated as forming part of a heel attaching machine such as disclosed in United States Letters Patent No. 2,480,905, granted Septem-ber 6, 1949, on an application filed in our names, of which the present application is a division.

The various features of the invention will be understood and appreciated from the following detailed description read in connection with the accompanying drawings in which Fig. 1 shows in side elevation a combined heel pricking and heel attaching machine;

Fig. 2 is an enlarged front view, partly broken away, of operating parts of the machine shown in Fig. 1;

Fig. 3 is a left-hand side elevation, partly in section and partly broken away, showing the illustrated pricking machine;

Fig. 3a is a view showing in side elevation portions of treadle-operated mechanism for actuating a pricker head;

Fig. 4 is a rear view, partly in section, of portions of pressure-controlling mechanism illus-.

trated in Fig. 3;

Fig. 5 is a left-hand side elevation of pricking mechanism locking means of the pricking machine;

Fig. 6 is a rear view, partly in section, of the mechanism illustrated in Fig. 5;

Fig. 7 is a left-hand side elevation of adjust-,

ing means for the pricking mechanism of the machine;

Fig. 8 is a front elevation, partly in section, of

the mechanism illustrated in Fig. 7; and

the nails being so driven into the heel-seat portion of a shoe that they project therefrom, and:

a heel 4 (Fig. 9), operated upon by the present machine, thereafter being pressed on to the projecting portions of the nails to attach the heel to the shoe.

The pricking mechanism is arranged at the N 9 Claims. (Cl. 164-865) in saidLettersPatent 2,430,905. It is so posi-,

tioned that when a frame I, carrying a left-hand Work-supporting mechanism 3 (Figs. 1, 2, 3 and H 9) anda right-hand work-supporting mechanism 5, associated with the fastener-inserting mechanism 2 is moved to its left-hand positionillustrated in Fig. 2, the heel 4 on the work-supportingmechanism 3 is beneath pricking tools, hereinafter described, of the pricking mechanism and the mechanism. 5 is directly below a lastengaging or shoe-supporting abutment 1 (Figs. 1 and 2). Thepricking machine comprises a main bracket 9 securedto a side of a machine-frame ll. A'forwar'd portion l3 of the bracket 9 has slidingly mounted in it a vertical sleeve-portion l 5 (Figsfl and 3)"extending upwardly from a hollow pricker-head IT. The pricker-head I1 is substantially rectangular, when viewed from above, and in the inner surfaces of its front and rear walls near the bottom thereof are formed rectangular grooves l9 (Figs. 3 and 9). The lower portion of theleft-hand wall of the prickerhead His formed by a door 2|, hinged to the head-by a vertical pivot 23 and held in closed l9 to be held therein; by the right-hand wall of the pricker-head and an adjustable screw 3|. forming part, of the door. .Below the flanges 29 the block 21 has outwardly extending. portions which engage the lower face of the pricker-head The lower face 33 (Figs. 1, 2, 3 and 9) of the block 2'! is convex and is arranged to engage the upper concave attaching face of the heel 4 and to clamp the heel during the pricking operation.

The blockj] has ,formedin. it aplurality ofawlguiding holes or passages 34 (Figs. 3 and 9), which, if a mans shoe-heel is'being operated. upon, are usually vertical, but, if it is a Womans In the work-supportingmechanism 3 a press- T ing..plate', on which a heel rests on'its'treadface, is made in two parts. An upper part 35 (Figs. .2, :3 and ..9)., whichsupports the heel 4' and carries work-holding and -positioning de- 'vices .D .(Figs. 1, 2, 3 and..9), shown in detail in said PatentNo. 2,391,543, is slidably mountedon a lower part 13'] (Fig. 2), so that the upper part i may bemovedi forward from beneath a prickerleft-hand side of the combined machine disclosed 551;; head A (Figs. ,2, 3 and9) and held. in this position, while a heel is placed thereon in the devices D.

In the combined heel-pricking and heel-attaching machine disclosed in said Letters Patent No. 2,480,905, mechanism is provided for preventing the machine from being started under'powen unless the upper part 35 of the pressing plate of the supporting mechanism 3 is fully in operating position, and for preventing the part 35 from. being pulled forward when the mechanism 3 is'beihg' moved to or from its right-handposition inwhi'ch the pricked heel thereon is attached to 'ashoe. Such mechanism comprises a lateral-lyextending horizontal locking rod I'I'I (Fig. 2), which is slidingly mounted in the part 31 of thapressing; plate. The left-hand end of the rod; I111 to; enter a recess I19 in the part-3.15 imits rearward position to prevent said part from being moved forward. In the present pricking machine. the rod [11, which has a pair of flanges I8I', may, after removing a bell-crank arm I85. be. moved by hand so as to enter the recess I19 inthe part: 35, said rod being held against displacement in its locking position, untilmanual withdrawal from the recess I19; bya spring-pressed plunger 2031.

Enclosed within the pricker-head I'I isan. awlcarrying block 39' (Figs. 2, 3 and 9) having secured to its lower face a plate 4t having a number of holes through each of which passes an.

awl 43, comprising-4a relatively thin rod having a head on its upper end. The. heads of the awls are received in recesses in the block 39 and are supported by the plate 41', the; holesin which are large enough to'allow the awls. to have some:

slight lateral swinging movement. The block 39 and the plate 41 constitute a carrier to which. the awl's are coupled as above described. The block 39 has formed in its upper portion a guideway 45 (Figs. 3 and 9) extending laterally of the machine, and which is arranged to receive a head 41* onthelower end of a vertical awl-spintile or connection 49 guided in the sleeve I of the pricker-head'. When the door 21- on the pricker-head I1 is opened, the guide-block 21, carrying block 39- and awls- 43, then in their operating position" in the head, may be removed bodily as a unitby' merely sliding them from said head and fromthehead 41 on the spindle 49'. They may then be replaced-by a guide-block, carrying block and awl'scorresponding to a different pricking. design- The'screw 3 I, which may be described as constituting part of the door 21, retains the awl-guiding block; 21', the carrier 39,.4IJ and the; awls: 431 in their operativepositions' when the door has been.v shut and locked.

Thei-sleeve-portiont5: of the pricker-head' has a. key 5| (Fig. 3), arranged toslide in: a keyw'ay 53 in the portion Ii3 of thelmain. bracket I19 to prevent the pricker-head. from rotating. At the rear of the sleeve-portion, are rack-teeth 55 engaged. by a. gear-segment 51 on the: forward end ofzan. arm 59 of a. pricker headr-lever 61:. The arm 59 is secured onahorizontal spindle 33 (Figs; 1 and 3) extending laterally of the. machine and rotatably mounted in the main; bracket 9.. V

The. lever 6.I has a rearwardl y' extending arm 65. on which. is an upwardly extending, boss. 61. (Figs. 3 and. 4):. Slida-blymounted in a bore in theboss; 6.1- and extending lengthwise thereof isa pricker head-actuatmg rod 69. Therod has a; head or latch. II atits lowerend and a reduced portion extending upwardly from the head through the boss. The-bore-i'n the-boss has one portion in which the head- FF is movable and a- 4 reduced upper portion in which the rod is movable, there being a compression-spring 13 in the bore surrounding the rod. This spring engages the latch II and a shoulder formed by the reducedportion of the bore and urges the rod 69 downward-1y. The rod 69 above the boss is threaded and has on it a nut and a locknut I5 which limit its downward movement. The lower 6), pivoted to the upper end of a pricker-headactuating toggle-link 83. The projection I9 is ;movable in response-to movement of the upper end of the link 83 and may be considered as part of such link. The lower end portion of the toggle-link 83 is pivotally connected to a togglearm 85 of apower-operated pricker-head-actuating lever or member 81. The lever Bl has a hub, fromrwhich the arm 85. extends upwardly, it turning, about a horizontal. spindle 89 extending laterally of the machine and secured in brackets 9|. fixed to. the bracket 9 of the pricker mechanism- The. arm 85; of the lever 81. and the link 83 form, a. toggle, which when straightened, as herein-- after described, causes, through the rod 69, spring 13, pricker-head-lever BI- and gearing 51, 55, the aWl-block 21 to be pressed against a heel on the plate 35 of the work-supporting mechae nism 3.

The rear portion of the link 8| has a substantially horizontal slot 93 (Fig. 3), through which passes a horizontal pin 95 (Figs. 3- and 61., secured in a bracket 9! (Figs. 3, 5 and 6 on the bracket. 9 to support and guide the rear end of the-link. The-toggle-link 83 has connected. to it one. end of a. tension-spring 99 (Fig. 3'), the: other end of which is secured to the bracket 9 and is arranged topull the upper end of the toggle-link and link 81- forward to. position the projection. I9 on the latter link beneath the shoulder 'l'lon the latch II of the pricker-head-actuating rod 69. The

pricker-head-actuating lever 87 has another arm.

or extension IIlI (Fig. 3) in frontv of the toggle. arm 85.. This is arranged .to engage the front of. the: toggle-link. 83 near: the lower end? thereof, and, as the toggle is broken, to move the up per'end of theztoggle-link 83 and the link 81 rearwardly to shift the projection l9 from beneath the; shoulder 1:! on the latch TI- of the prickerhead-actuatingv rod.

The pricker-head I! is first moved down by treadle-operated means to cause the awl-guiding block .21 to engage the heel 4 on the work-support: 3. This means comprises a rearwardly extending arm I'93'fast on the spindle63-to which the prick er-head-lever 6| is secured. Theend of the arm I03 (Fig.3) has pivotally connected to it a twopart link, comprising a lower-portion I95 (Figs. 3- and 3a and an upper portion It? (Figs. l, 3 and- 3U) slidihgly mounted in the lower portion and connected by a tension-spring I09. The upper end of the portion I'll-'7" is pivotal-1y connected to a lever III, by which the shoe-supporting abutment 1 of the heel-attaching machine is depressed, as.

described in said Patent No. 2,391,543". The rear' end of the lever III is coupled by a rod H2 to the endof an arm I'Ill (Fig. 1) secured upon a shaft H 4 mounted in bearings of the frame. To the shaft H4 is also secured a longer arm [I6 operatively connected by' arod H8 to a, treadle I20. Depression of the treadle I29 causes clock wise movement of the lever I II, as viewed in Fig.

1; against the action of a spring I22, the upper endof which is attached to the lever and the lower end of which is attached to the machine frame. When the treadle I29 is depressed, the pricker-head I1 is moved downwardly through the abutment-lever Ill, the link I05, I01 and the arm I03, until the awl-guiding block 21 engages the heel 4 on the work-supporting mechanism 3. During this movement of the arm I93 and accordingly the lever (ii, the boss 61 and the pricker-head-actuating rod 69 are moved upwardly, and this upward movement causes the shoulder 11 on the head H on the rod to lie at a higher level than the projection 19 on the link 8|, so that the projection may be moved beneath the shoulder in readiness to cause, as hereinbefore described, the awl-guiding block 21 to be pressed against the heel by power-operated means. The upper end of the awl-spindle 49 is pivotally connected by a pin II3 (Figs. 1, 3, 7 and 8) to a link II pivoted to the forward end of an awl-actuating lever connection or arm H1. The pivotal connection between the lever H1 and link II5 comprises a stud I19 (Figs. 3, '1 and 8) rotatably mounted in the link I I5 and having an eccentric portion IZI mounted in the lever H1. The stud I I9 has a relatively large disc-like head I23, having around it a plurality of holes I25 through any one of which a screw I21 may be passed and threaded into the link II5. By removing the screw I21 and rotating the stud H9 the height of the spindle 49 and accordingly the awls may be adjusted relatively to the lever II1, and since this lever has a definite amount of movement during operation of the machine, the depth of the holes in the heel is correspondingly varied.

The lever H1 is pivoted about midway on a horizontal stud I29 carried by a bracket I3I secured to the main bracket 9. The rear end of the lever II1 has two arms each of which is pivotally connected to the upper end portion of a toggle-link I33 (Figs. 1, 3 and 4) of an awl-actuating toggle-lever. The lower end portion of each toggle-link I33 is pivotally connected to the upper end of an arm 135 extending from the hub of the pricker-head-actuating lever 81. The lever 81 has an arm I31 to which is pivotally connected the upper end of a rod I39, the lower end of which is pivoted to an arm I4I movable under the power of the machine when clamping pressure is applied to the work, as described in the Gouldbourn Patent No. 1,195,134 and the Carr et a1. Patent No. 2,391,543. When, therefore, the machine is being operated by power, the toggle, comprising therlinks I33 and arms I35, is straightened, to cause the awls 43 to prick the heel, after the guide-block 21 has been pressed firmly against the heel, as later described.

As the downward movement of the awls 43 to prick the heel 4 is nearly completed, the prickerhead I1, after it has been pressed by the poweroperated mechanism against the heel, is locked against upward movement. The lock remains operative until the awls 43 have been withdrawn from the heel 4, to prevent the heel from being lifted from the work-support 3 as the awls are moving upwardly after their pricking action. The mechanism for locking the pricker-head I1 comprises an arm I43 (Figs. 1, 3, 5 and 6) projecting downwardly from the boss 61 at the rear of the pricker hea'd-lever 6|. Arranged to engage the left-hand side face of the arm I43, viewing the machine from the front, is an eccentric face I45 on a locking lever I41 (Figs. 5 and 6) pivoted on the bracket 91. The lever I41 has an arm I49 extending toward the left and the eccentric iace I45 is so arranged that upward movement of this arm I49 causes the eccentric face to wedge against the arm I43. The opposite face of the arm l43bears against the bracket 91 and the engagement of the eccentric face prevents downward movement of the arm and therefore upward movement of the pricker-head I1. The arm I49 of the locking lever I41 has extending from it a stud I5I (Figs. 3, 5 and 6) on which is mounted'a roll I53v (Figs. 1, 3, 5 and 6). The roll I53 is'en-'- gaged by a cam-face I55 (Fig. 5) on a cam lever I51 pivoted on a stud I59 (Figs. 5 and 6) secured in a plate I6I fixed to the bracket 9b'y screws I63. These screws pass through slots in the plate, so it and the cam-lever I51 may be adjusted upwardly or downwardly. The camlever I51 has an arm I in which is secured a stud I61 (Figs. 1, 5 and 6) passing through a slot I69 (Fig. 5) in the lower portion of a lock-actuating link I1I. The upper end of the link I1I is pivoted to the rear end of the pricker-actuating lever I I1. The slot I69 has extending into it two screws I13 and I15, so arranged that just before the awls complete their pricking movement the screw I13 at the lower end of the slot engages the stud I61 in the lever I51 and causes the lock to become effective. When the awls 43 have been withdrawn from the heel 4, the screw I15 in the upper end of the slot engages the stud I61 and 0p erates the locking lever to release the lock. The screws I13, I15 may be adjusted to vary the time of applying and releasing the lock.

The pricking machine operates in the following manner. When the heel-pricking and heelattaching machine comes to its stopped position after having caused the pricked heel to be attached to a shoe (not shown), the work-supporting mechanism 3 will be in its right-hand position beneath the shoe-supporting abutment 1, to whichit was previously moved with a pricked heel, now attached to the shoe as described in said Letters Patent No. 2,480,905. Unjacking the heeled shoe, the operator moves the carrier-frame I to shift the mechanism 3 to its left-hand position, beneath the awls 43, the pricker-head I1 and awls being raised. Although the work-supporting mechanism is described as being shiftable it will be appreciated that so far as the pricking machine per se is concerned the work-supporting mechanism may be fixed.

The operator'in placing an unpricked heel 4 to be operated upon in the machine draws forward the upper part 35 of the pressing plate of the mechanism 3 and places on it said jheel, tread-face down, in the work-holding and positioning devices D. He then moves the part 35 of the pressing plate rearwardly to carry the heel beneath the pricker-head I1 and locks the part 35 upon the part 31 of the work support by inserting the locking rod I11 (Fig. 2) in therec'ess I19 of the part 35 as above described. When, thereafter, the operator depresses the treadle' I20 of the machine, the pricker-head I1 is moved down by its connection to the abutment-lever III, as already described, to cause the awl-guiding block 21 to engage the upper face of the heel and to force the heel against the upper part 35 of the pressing plate. Movement of the arm I03 and accordingly movement of the pricker-headlever 6| resulting from the above movement causes the boss 61 on the rear of the lever to be raised, so that the shoulder 11. on the head or 9 the spindle respectively, and means for locking the door, said door in its locked position being constructed and arranged to retain the block, the carrier and the awls in their operative positions.

6. In a pricking machine, a support for a heel, movable means :for clamping a heel against the support, movable means for pricking the clamped heel, levers for operating the clamping means and the pricking means respectively, a power-operated actuating member, a link which forms a toggle with said member and operatively connects positively said actuating member to the pricking means operating lever, a link forming a toggle with said member, and mechanism which is actuated by the last-named link and is constructed and arranged to communicate movement of said link yieldingly to the clamping means operating lever.

'7. In a pricking machine, a support for a heel, movable means for clamping a heel against the support, movable means for pricking the clamped heel, lovers for operating the clamping means and the pricking means respectively, a poweroperated actuating member, a link which forms a toggle with said member and operatively connects positively said actuating member to the pricking means operating lever, a link forming a toggle with said actuating member, mechanism which is actuated by the last-named link and is constructed and arranged to communicate movement of the said link yieldingly to the clamping means operating lever, manually operated means for actuating the clamping means operating lever to apply preliminary pressure to the heel, and a latch which forms part of said mechanism and is movable in response to said manually operated means to an active position in which it is engaged by said last-named toggle link to cause the heel-clamping means to be opeated in response to movement of said power-operated actuating member.

8. In a pricking machine, a support for a heel, movable means for clamping a heel upon the support, movable means for pricking the clamped heel, levers for operating the clamping means and the pricking means respectively, a power-operated actuating member, a link joining the actuating member to the pricking lever, a latch slidingly mounted upon the clamping means operating lever, a spring which is interposed between said latch and the lever and through which movement of the latch is imparted to the clamping means operating lever, and a link pivoted to the actuating lever and movable into driving engagement with said latch.

9. In a pricking machine, a support for a heel, means for clamping a heel upon the support, means for pricking the clamped heel, a lever for moving the heel-clamping means, a connection for moving the heel-pricking means, manually operated yieldable mechanism for moving said lever to cause said heel-clamping means to apply preliminary pressure to the heel, a power-operated-actuating member, an arm joining the actuating member to the pricking means operating connection, a latch slidingly mounted upon the heel clamping means operating lever, a spring interposed between the latch and the lever, a link [pivoted to the actuating member and movable into and out of operative engagement with the latch, resilient means for constantly urging the link toward the latch, and an actuating lever extension for moving the link against the action of said resilient means, said latch being moved, upon the application of preliminary pressure to the heel, into a position in which the resilient means moves the link into operating engagement with the latch, subsequent operation of the poweroperated-actuating member causing through the latch the application of yieldable clamping pressure against the heel and, through the arm, the connection and the heel pricking means, the pricking of the clamped heel.

THOMAS BAGGOTT CLARKE. ARTHUR ALAN RIVINGTON.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 598,256 Raymond Feb. 1, 1898 1,077,929 Glidden Nov. 4, 1913 1,119,763 Pettengill Dec. 1, 1914

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