US1165364A - Heel-nailing machine. - Google Patents

Description

W. E. SCARLETT.

HEEL NAILING MACHINE.

APPLlCATlON FILED APR. 10. \915.

1 165,364. Patented Dec. 21, 1915.

{ WILL AM sonnnnrr, oF EAs-r LYN'n,"MAssAoH snrrs, nss eivon r0 HAMELSHCE MACHINERY COMPANY, OF LYNN, MASSACHUSETTS, A CORPORATION OF MASSA- CHUSETTS. 5

Specification of Letters Patent.

H EL-hammer MACHINE.

' Patented Dec. 21, 1915.

-0rigina1 application filed May 2, 1914,'Seria1 No. 836,014. Divided and this application filed April 10,

To all whom-it may concern -.Be it known that I, WILLIAM E. SCARLETT, a citizen of the United States, and-resident of East Lynn, county of Essex, Commonwealtlrof Massachusetts, have invented an Improvement in Heel-Nailing .Machines, of which the following: description, in connection with the accompanying drawings, is a specificatiomlike characters on the drawings representing like parts in each of the several views. p i v i This inventionhas for its object the production of a heel nailing machine such as is shown and described in myprior application, Serial No. 836,014, filed May 2, 1914, of which. this. present application is adivision. In thenailing of heels onto shoes as ordinarily carried out in power machines, trouble has been frequently experienced with the crushing and breaking downof the "lasts under the thrust ofthe nailing head, this being due to the fact that the usual nailing machines heretofore inuse have not had any adequate means for gaging and accurately determining the position of the last wlth referenceto the height of the heel and the tfinal limitof the stroke of the power head for the various different styles of heels and kinds of lasts. x

The prime object ofthe present invention is to provide means whereby any given last with any selected style and height of heel may bequicklyand conveniently positioned and clamped in accurate known relation to the stroke of the power head whereby the extent of compression by the power head in pricking and nailing operations can be definitely determined, and

liability of undue pressure, which would be liable to crush the last, avoided;

The above features of theinvention 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: Figure 1 shows in side elevation the operative parts of a heel nailing machine constructed in accordance with myinvention; and Fig. 2 is a fragmentary detail showing my improved two-step locking device as seen from the front of the machine.

At the rear of a suitable stand or base 1 is which pricking operation,

locked in a second and definitely crush the last.

1915.1 Serial No. 20,523.

umn'3 on which is slidably fitted a depending sleeve 4 of a head 5 projects the usual from the front of mentof the head 5 is controlled by a hand lever 7 fulcrumed at 8 near the rear of the machine and extendingtoward the front thereof, this lever being connected by a link 9'with the depending sleeve 4 of the head 5.

The head 5 is normally held yieldingly at its upper limit of nailing plate and nall' templet guide 6. The vertical moveumn 3 and a recessed seat in the head 5.

In accordance with my invention I provide means whereby the head 5 bearing the nailing plate 6 may be locked in a definite preliminary loweredposition where the nailingplate 1s adapted to serve as a backing to be clamped in place on the permit the heel to shoe underthe action of the jack as presently described; thisv preliminary locking of the headu5 being so arranged with referenceto the range of movement of the power head that, as. the power head descends for the the head is forced farther down a predetermined amount and position .where the Ipres sure upon the heel is suitable for thenailing operationwithout being excessive or apt to As a suitable means to this end, I show a spring bar 13' with a catch head 14. at its lower end equipped with two ledges l5, 16, one above the other in step relation, the distance between these ledges determining the extent of the final compresslon of the heel after its initial adjustment against the nailing plate. These locking ledges are adapted to engage underneath a fixed abutment 17 secured to or forming part of the block 2. 1 The spring locking bar 13 is adjustably held to the head 5 by elongated slot and bolt connections 18, the interengaging surfaces being preferably serrated as seen at 19. The lower end of the catch head 14: is beveled as seenat 2060' be 'engaged by the end of a lever 21 fulcrumed at 22 with an operating handle 23 for tripping the lock, this lever being normally held in inoperative position as shown by a spring nailing mechan1sm,

means, the same may be 24. Suitable means for holding the heads from turning is provided, this being shown "as a lug 25 at the back of the sleeve 4 carrying a stud or post 26 slidably-mounted in block 2.

Referring now to the means for supporting the shoe in operative relation to the I provide a ack which may be one such as is shown-and'described in my said application, said jack being provided with suitable heel and toe rests, and being capable of vertical adjustment by meansof the handle 39 and coacting gears 34, 35. As the jack forms no part of the present inventionyand it is obvious that any jack capable of vertical adjustment may be used, further detailed description is deemed unnecessary;

It will be understood that in use the handle 7 will be operated to depress the head 5 carrying the nailing plate 6 against the tension of the spring 10 until the first looking notch 15 snaps under the abutment 17 The handle 39 engaging the gear 35 will then be swung a distance sufficient to bring the heel, as it is set in place on the shoe resting on the jaclr, into proper relation or preliminary pressing engagement with the nailing plate 6. The amount of swing of said handle 39 and gear 35 for this purpose varies with the different heights of heels and sizes and styles of shoes. Thereupon the heel being brought to the proper positionby op- :eration of the handle 39, the powerhead l1 descends to prick the holes, at the sametime pressing down upon the nailing plate 6 to give the final compression to the heel, and as this occurs, the second step or notch 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 power compression of the heel with exactness, since the preliminary compression, as effected bythe 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.

Copies of this patent may be obtained'for Serial No. 836,014,.v

of oper- 1. A heel nailing machine, comprising a nailing plate mounted to move vertically and eqriippedwith means for normally holding ityieldingly elevated, a two-step lock for locking said plate in either aprelimin'ary or a final-lowered position below its normal position, and a jack post support having means to adjust the heel of a shoe positioned thereon in operative relation to said nailing-plate whenlocked at the first step of said two-step lock for the purpose stated.

A heel nailing machine, comprising ainailing plate mounted to slide vertically and equipped withineans'to hold it normally yleldingly elevated, a two-step lock con- .nected to'control said plate and adapted to hold it'in either of two lowered positions a relatively short distanceapart, a jack post,

and an operating device for adjusting said jack post upward by predetermined and variable amounts ata single movement of said operatlng device to bring a heel on'a shoeresting'on said jackin operative relation to said nailing plate in its first or preliminary lowered position for the purpose stated. 1 V

3. A heelnailing machine, comprising a head mounted to slide vertically .with a spring to hold'itnormally'elevated, a nailing plate. carried by and projecting from saidhead, a spring'bar carried by said head having two-stepped shoulders, a fixed abutmentv to cotiperate with said shoulders for holding the head in either a preliminary or a final lowered position'at will, means for holding 'a shoe with a heelset'thereon in operative relation to said nailing plate when and an'fopin preli'mmary lowered position,

crating device adapted to-Iraisesaidjack post byvariable amounts at a. single movement to bring shoes with heels of different heights in proper relation to "said nailing plate. i

l. In a machine of the class described, a vertically movable nail plate carrying head, normally elevated andyieldingly; supported, carrying one member of a two-stepped looking means, a with said first member, means to manually cause. a preliminary first step engagement of the locking. means, andpower applied means to thereafter cause final second 'step engagment of said locking means; r a

In testimony whereof, I havesignedmy name tOi this specification, in the presence of two subscribingwitnesses; v a v 5 'WILLIAM E. SGARIJE'TT;

Witnesses:

SADIE. MI HAYES,1 CATHERINE L; FLANAGA'NI fixed member adapted "to co-"act five cents each; by adh'sing h Commissioner of Patents. 1

Washington,D,O r l V

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