US1265525A - Heel-nailing jack. - Google Patents

Description

W. E. SCARLETT. HEEL NAILINGJACK. APPLICATION FILED MAY2,1914.

Patented; May 7,1918.

3 SHEETS SHEET l- W E. SCARLETT.

v HEEL NAlLlNG ]ACK. APPLICATION FILED MAY 2,'1914.

Patented May 7 1918.

3 SHEETS-SHEET 2.

W. E. SCARLETT. HEEL NAILLNG JACK. APPLICATION FILED MAY2.1914.

1,265,525. Patented May 7, L918. s SHEETSfSHEET a.

do I I I 3- 42 WILLIAM E. SCARLETT, OF EAST LYNN, MASSACHUSETTS.

HEEL-NAILING JACK.

Specification of Letters Patent.

Patentedltliay 7, 1918.

Application filed May 2, 1914. Serial No. 836,014.

To all whom it may concern: I

Be it known that I, WILLIAM E. SCARLETT, a citizen of the United States, and resident of East Lynn, county of Essex, Commonwealth of Massachusetts, have invented an Improvement in Heel-Nailing Jacks, of which the following description, in connection with the accompanying drawings, isa specification, like characters on the drawings representing like parts in each of the several views.

In the nailing of heels onto shoesas ordinarily carried out in power machines trouble has been frequently experienced with the crushing and breaking down of the lasts under the thrust of the nailing head; this being due to the fact that the usual nailing machines heretofore in use have not had any adequate means for gaging and accurately determining the position of the last with reference to the height of the heel and the final limit of the stroke of the power head for the various different styles of heels and kinds of lasts. One prime object of the present invention is to provide a heel nailing jack specially adapted for use with means whereby any given last with any selected style and height of heel may be quickly and conveniently positioned and clamped in accurate and definitely known relation to the stroke of the power head whereby the extent of compression by the power head in the pricking and nailing operations can be definitely determined and liability of undue pressure that would be liable to crush the last avoided. A further object is to provide an improved construction of nailing jack or support adapted to be manipulated with ease and precision for positioning the last with the shoe thereon in proper relation to the operative parts of the nailing machine, the shoe holding devices being conveniently and quickly adjustable in any direction as required for engaging various styles and sizes of shoes. This improved nailing jack or support which constitutes my invention has as a central feature thereof a self contained mechanism adapted by a single manual throw to adjust the jack post with the last thereon upward to a predetermined amount as required for bringing the heel against the nailing plate. Still further features of the invention have to do with an improved construction of toe rest and mounting therefor, and with an improved. construction of head for the jack post and a self adjusting jack pin carried thereby. The above and other objects and features of the invention will be better understood from the following detailed description taken in connection with the accompanying drawings and will be thereafter pointed out in the appended claims. Referring to the drawings: I v Figure 1 shows in side elevation the operative parts of a machine and nailing jack constructed in accordance with my invention;

Fig. 2 is a fragmentary detail showing my improved two-step locking device as seen from the front of the machine;

Fig. 3 is an enlarged side view of the nailing jack removed;

Fig. 4 is a plan view of the jack;

Fig. 5 is a front view thereof;

Fig. 6 shows a further enlarged View of the jack post head; and

Fig. 7 is a sectional detail on line 7-7 of Fig. 3.,

At the rear of-a suitable stand or base l is fixed a block Qfrom which rises a guide column 3, on which is slidably fitted'a depending sleeve 4- of a head 5 from the front of which projects a usual nailing plate and nail templet' guide 6. The vertical movement of head 5 is controlled by a hand lever 7 fulcrumed at "8 near the rear of the machine and extending toward the front thereof, this lever being connected by a link 9 with the depending sleeve 4; of the head. The head 5 is normally held yieldingly at its upper limit of movement by a stout coil spring 10 acting between the top of the column 3 and a recessed seat in the head. The power drive mechanism, a part of which is indicatedat 11, may have a usual prick head, and a drive head 12 operable in the usual manner.

1 provide means whereby the head 5 bearing the nailing plate may be locked in a definite preliminary lowered position where the nailing plate is adapted to serve as a backing to permit the heel to be clamped in place on the shoe under the action of the jack as presently described; this preliminary locking of the head 5 being so arranged with reference to the range of movement of the power head that as the power head descends for the pricking operation, the head is forced farther down by a predetermined These locking ledges are "adapted to engage underneath a fixedabutment'lZ secured to or rail-m1, ga part of' th'e block 2. The "spring locking bar 13 is adj ustably held to "the head an elongated slot and bolt connection tester; at 18; theiatere'ngaging surfacesbe ing preferably serrated as see'nat19. The lower end of thecatch'he'ad l4 isbeveled as Seenat'QO tofbe engaged by the end of a lever 21 fulcru'ined ates with'an operating handle 23' fortri'ppingthe lock, this lever being normally held ininoperative position asshown-10 as ring 2 f. Suitable means forhol'ding the head 5'from turning is provided, this being-shown as "a lug 25 at the hack of sleeve 4 which is 'slidab'ly fitted to a post 26 upstanding from the "block2. Turning now 'tojth'e means for supporting the shoe in operative relation to the nailing meol'i'a nisn'nl provide a"slideb'ase 27 shown as equipped with lateral flanges 28 to 'engage guide ways-29 on the stand 1 for in and out movement relative to the head 'and its mounting. The slide base'27 has its inner side fan uprightextension 30 formed with a vertical bore in which is 'sl'idably fitted-the jack-post 31. This post has its lowerf'portio'n formed with coarse threads as seen at 32 which are engaged with a sleeve nut33 fitted'in bearings of the upright 30. This nut-33 is equippedwith a spur pinion 34: which is operated by a gear .35 mounted on a stud 36 fixed in the base. The gear 35 ispreferably considerably larger than the gear SLbe'in'gshoWn as in two to one ratio. This taken inconjunction with'the coarse threads 32 of the jack post permits a substantialdegree of jack post adjustment with a relatively small amount of turning of the gear 35; The gear 35 is equipped with spaced apart holes 37 selectively engageable by a. pin. 38 carried by and operative in, a hand lever 39 j ournaled on. the stud 36. The pinj38 is ,slidably fitted in the lever 39 beingcarried. by a trip lever 450 fulcrumed at 41 on the top of the'lever '39 with an inter posed spring lQ acting to. normally press the pin 38 into, one of the holes that may be'in register therewith. By the shiftable clutch connection thus obtained of the lever 39 with the gear35, it is possible to so set the lever with reference to, said gear that by swinging it from the'initial position thus established to some definite angular extent, 0. 9., to its final limit'of throw, the jack post with the shoe thereon will be moved up by a predetermined variable amount that may be desired. To hold the toe rest and guide in proper relation to the jack post I provide a bracket 43 which may be secured at its rear end to the upright 30 as seen at 4A and it is secured intermediate its length to the upper end of the 'studpost 36 which is extended for this purpose, the bracket 43 beingspaced above the gear '35 byja spacing block 484: enoughso that the operating lever has clearance thereunder. The brackett3 has an elongated slot 45 atits'pr'ojecting front p0rtion "in which is*fitted a reduced end 46 of a threaded post-l7. A nut 48 engaged with the} lower threaded --part of the post 47 serves as an adjustable backing for clamping the po'st47 to thebracke't'by means of'a nut'49 underneath which is equipped with an operating handle 50. Thus by loosening thenut et9 the to"'e"'s u'ppor't post 47 may be adjusted in and outjto ac ommodate diife'rent'sizes of shoes andby roper adjustment of the nut tSQit is p'os'sibleto so i'a'rr'ange theo'p'eration 'of tlie nut 4'9 that when it is in clai'nlping position its handle 50will extendv in a direction so asito be out of the way. The upper portion of the-post '47 has sli'd'ably fitted thereon a head '51 which is held "from turningbyslida'ble key engagement with an extendedkey. wayofthe post as seen at 52.

This head '5l re'sts' on a nut 53 threadedon the post; 4 57 and by themanipulation of said nut may be adjusted up and'downas required for different styles and sitesof'shoes. The head '51has at-itstop a cushion rest 5i for the 'toe, ofsuitable width and it is equipped with opposite :lateralbearing's "55 for the journals of swingin-garms 56 which extend up to constitute sideguides '57 for th'e'front portion of the shoe. Thesearms 56' have at their lower ends nuts '58" engaged by threads of a rightandleft hand screw 59, the central'portion'of which isj'ournaled at 60 on i the head. 51. Thus by turning this screw the guides 57 may be properly'adjusted so that they are in position to -aline,o'ne rights and the other Ileftsof shoesas the forepartsithereof are brought against one guide or'the other as the case maybe.

The jack-post 131 may bev held against turning by a transverse pin 61therein, the projecting head of'which engagesan'elongatedverticfilslotGQ inthe top of Ltheupright 30. A jack post head '63 is fixed to the top of the post 31" and it has pivotedat' "the back thereof'at 64: a restpiece 65 forthe't'op of the last. This rest piece is adaptedto be adjusted angularly to fit the'surface ofthe last by nieans offa screw 66 threaded through a forward extension 67 of the he'ad 63 and acting upon. a' depending portion 568 of the rest which is guided "between cheeks "68 of the head.

I preferably provide J means whereby the last pin 69 can adjustitself laterally to accommodate irregularities in the holes of the lasts while being st1ll held rigidly upstanding and for this purpose the last pin has a T-head engaging a trans- .verse undercut groove in the rest whereby the pin may slide laterally to the requlsite extent and still be held secure against any swinging or vibrating tendency. To lim this transverse movement of the last pin, a slot 71 is formed in the head thereof and into this extends the end of a threaded pin 72 fitted in the depending portion 68 of the rest. A receiver for engaging the back of the shoe and positioning it on the jack is indicated generally at 7 3 with lateral cheek plates '74: adapted to be adjusted up against the sides of the shoe by an adjusting screw 75. The receiver as a whole is adjustable in and out from the block 2 by an adjusting screw 76. The details of this receiver form no part of the present invention and are claimed in my co-pending application, Serial No. 33,166, filed June 9, 1915.

It may now be understood that in use the handle 7 will be operated to press down the head 5 with the nailing plate 6 against the tension of spring 10 until the first locking notch 15 snaps under the abutment 17 Then the handle 89 will be adjusted relative to the gear 35 by engaging the pin 38 in the proper hole 37 so that by giving a predetermined swing to the handle it will bring the heel as it is set in place on the shoe resting on the jack into proper relation or preliminary pressing engagement with the nailing plate 6, the proper position of the handle 39 and gear 35 for this purpose of course being different and varied as required for different heights of heels and sizes and styles of shoes. Thereupon the heel being brought to the proper position by operation of thehandle 39, the power head 11 descends to prick the holes, at the same time pressing down upon the nailing plate to give the final compression to the heel and as this occurs the second step 16 of the locking bar 13 snaps in place under the abutment 17, holding the nailing plate down to keep the heel properly compressed as the nails are driven. In these operations it will be noted that it is possible to determine the extent of secondary or powor compression of the heel with exactness, since the preliminary compression as effected by the operation 'of the jack handle 39 is to a definite and predetermined extent and of course the extent of movement of the power head is likewise a definite invariable quantity. It will be noted that by reason of the elevated position of the bracket 43 which holds the rest for the front portion of the shoe, the operating lever 39 can have a full range of movement and be operated to the best advantage. It will further be noted that my improved means for adjusting the toe rest and for adjusting the rest at the head of the jack post permit the shoe to be positioned quickly and accurately for the heeling operation. I am aware that various of the details of the invention can be varied without departing from the spirit thereof and I therefore desire the present embodiment to be considered as illustrative and not restrictive, referring rather to the appended claims to indicate the scope thereof.

Having described my invention, what I claim asnew and desire to secure by Letters Patent is:

1. In a heel nailing machine, a jack post adapted to hold a shoe with a heel thereon in operative relation to a nailing plate and an operating device for said jack post adj ustable to different initial positions to raise it vertically to variable and predetermined positions at a single full movement of said operating device from a selected initial position to a determinate limiting position for bringing heels of different heights to operative position.

2. In a heel nailing machine, a jack post mounted to hold a shoe with a heel thereon, and means for raising and lowering said jack post consisting in a gear, an operating handle mounted concentric therewith, and means for variably connecting said operating handle with said gear for moving said jack post upward to variable predetermined positions at the limit of throw of said handle for the purpose stated.

3. Apparatus of the kind described, comprising a jack post for supporting a last with a shoe thereon, means for moving said post endwise, an adjustable handle mounted to swing horizontally for operating said post moving means, and means for supporting the front portion of the shoe having a mounting offset from said jack post and elevated to clear said handle to permit swinging thereof for adjusting and operating movements.

4. Apparatus of the kind described, comprising a base having an upright formed to constitute a guide for a jack post, a jack post having a rest at its top to receive a last, fitted to slide in said upright, the lower por tion of said jack post being threaded, a nut fitted to engage the threads of said jack post, gearing for operating said nut and a handle to operate said gearing having means for selective engagement therewith in diiferent positions at will.

5. Apparatus of the kind described, comprising a support having a jack post slidably fitted therein, operating means for adjusting said jack post longitudinally in said support disposed adjacent the base of said support, and a rest for the front portion of the last having a bracket mounting carried by said support and extending over said operating means for the jack post so as to clear the same in all positions of the movement thereof. I

'6. Apparatus of the kind described, comprisin a 'bas'e'having an uprightext'ending therefrom, a jack p'OStfittedfor adjustment in said upright, operating means for adjusting the jack p'o's't 1ongitudi1'1a11y in said upright disposed adjacent said 'base, a bracket "extending out from "said upright over said operating means to clear the same, andmeans for supporting the front of f-the last 'adjus'tably carried by said bracket.

7. Apparatus of the kind describedyc'o'mprising means forsi'ippor'ting' the back part 'of a shoe in position for heel nailing and 'Oopi'es of this {patent may be obtained'fo'r means associated therewith for supporting and alining the forepart of the shoe, said alining means consisting in a pair of upstanding spaced apart guides with neans 20 for simultaneous adjustment whereby one I is in position to aiin'e'rights and the other lefts of any style or size of shoe.

In testimony whereof, I have signed-my name to this specification, in the presence of 25 tWo subscribing Witnesses.

WILLIAM E. SOARLETT.

VVitness'es CLYDE L. ROGERS, Louisn A. JORDAN.

five cents each, py addressing the Commissioner of Patents, Washington, I). C.

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