US947510A - Nail-block templet for heeling-machines. - Google Patents

Description

I G. F. STEWART. NAIL BLOCK TEMPLET FOR HEELING'MAOHINES.

APPLICATION FILED MAILB, 1908. 947,51 0.

Patented Jan. 25, 1910.

2 SHBBTS*SHEET l.

ZZZ L WITNESSES.

G. P. STEWART. I NAIL' BLOCK TBMPLET FOR HBELING MACHINES.

APPLIOATIONYI'ILED MAB-6, 1908.

Patented Jan. 25, 1910.

2 SHEETS-SHEET 2.

. generally as upon heels which UNITED srarnsgratrnn'r OFFICE.

GEORGE I. STEWART, 0F SWAMPSCOTT, MASSACHUSETTS. ASSIGNOR TO THOMAS G.

- PLANT, 0F BOSTON, MASSACHUSETTS.

NAIL-BLOCK TEMPLET FOR HEELING-MACHINES.

Specification of Letters Patent. Application filed March 6, 1908. Serial No. 419,424.

Patented Jan. 25, 1910.

'0 all whom it may concern:

Be it known that I, GEORGE F. STEWART, a citizen of the United States, residing at Swam'pscott, in the county of Essex and State of Massachusetts, have invented an Improvement in Nail-Block Templets for Heeling-Machines, of which the following description, in Connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts. This invention relates to machines for operating upon boots and shoes and more particularly that type of machine known heel attaching machines. Many heel attaching machines operate: have been previously loaded with nails in such manner that the heads of the nails are left projecting some distance from the tread face of the heel. In thereafter attaching such heels to shoes it is convenient to place the heel in the machine by inserting the projecting nail heads of the loaded heel into the apertures of the nail block used in connection with the attaching machine, the shoe bein thereafter brought into engagement W113 the heel while so held. As heels of varying sizes reqnire varying numbers of nails, and varying locations of nails, it is generally customary to employ, in a machine of this type, what is known as a multiple nail block, that is, a nail block having asuflicient number of nail apertures therein arranged to properly accommodate varyin series of nails in any size or style of loade heel.

When wheel has been loaded with a cerin number of 11ai1s,say seven, it is clear that some difiiculty is experienced in inserting-these seven proiecting "nails in the properlyrcorrespondmg seven nail apertures of a multiple nail block, which is provided with iZWGII-ty-TOIH' OI" more closely spaced nail holes. This difficulty is increased-byreason of the fact that, as a rule, the surface of the nail block against which the heel is to be placed is usually below the line of vision of the operator, and the placing of the heel must, therefore, be accomplished by sense of'touch alone.

One object of the present invention is to provide an attachment, for machines of the general type described, that will permit the operaton'to invariably select from the great" number of nail holes in the multiple nail block the correct series for the nail heads projecting from the loaded heel which at any particular time he desires to attach to a shoe.

In assembling heels and shoes it very frequently happens that the hccl'seat of the heel and the heel seat of the shoe do not form a tight fit with each other, that is, when the two heel seats are )laced together,

an air space is left between t em. In thereafter attaching such heels the great pressure upon the central portion of the heel incident to the nail driving will close u the air space, but at the same time it wi l depress the surface of the tread fac of the heel through which the nails are driven. This will leave the edge of the heel outside of the nails higher than the central portion, and therefore, when the heel nail heads are left projecting for blind nailing on a top lift, these nail heads are too low to penetrate the top lift suiliciently to securely hold it on the heel. It is obvious, also, that an air space is formed between the tread face of the heel and the inner face of the top lift. If pressure-is applied to the heel to close this air space and force the.top lift 'upon the heel nails. it i, given a hollow appearance which is undesirable as is well known to those skilled in the art. This defect might be remedied to some extent by hollowing out the area of the face of the ,nail block covered by the nail apertures, forming a recess, so that in the heel compressing operation the raised surface inclosing the perimeter of the area covered by the nail holes operates to place more pressure on the outer edge of the heel, or that portion of the tread face outside of the horse-shoe of nails. Thus when the nails are driven the excessdepression of the central portion of the heel is compensated for, and the tread face of the heel is maintained level. as is desirable. This remedy, however, is not effective when using a multiple na l block. One reason for this/ is that generally each series of nail holes selected from the apertures in said block includes the aperture at the extreme rear of the great number of apertures in the block. This being the case, when operating 11 on a small hccl the horse-shoe of nails,

v hich of course is a great deal shorter than a horse-shoe selected for a large heel, will not extend forward a great a distance from the roarmost aperture in the nail block .as in the case of the large heel. Therefore, al-

though the surface of the nail block in Which shoe of nails selected from the series of apertures in the nail block. This is clearly seen from the fact that a smaller heel would not extend far enough forward for its breast to be engaged by the raised surfaceextending across the front of the nail block.

Another object of the present invention, therefore, is to provide means whereby the tread faces of all heels outside of the horseshoe of nails, no matter what the size of the heel or the location of the series of nails therein, may be given proper compression to invariably level up the tread face. of the heel and leave it in proper condition for the reception of a top lift.

To the accomplishment of. these objects and such others as may hereinafter appear,

as will be readily understood by those skilled in the art, the invention comprises the general features and combinations of parts herein described and more particularly -defined in the appended claims.

The various features of the invention will be best understood from a description of one embodiment thereof, such for instance as shown in the accompanying drawings, in which for convenience the invention has been shown as applied to a heel attaching machine of the type shown and described in the co-pending application of Thomas G. Plant, Ser. No. 414,707, filed Feb. 7, 1908, and in which:

Figure 1 is a front elevation of the movable cross head of the machine of said copending application with the present improvement applied thereto, a heel being shown in position b ydotted lines; Fig. 2 is an enlarged section, in elevation, on line 22 of Fig. 1; Figs. 3 and l are under-side plan views of the improved attachment hereinafter to be described, showing the same as constructed for operation with two different sizes of heels; Fig. 5 is a sectional elevation on line 55 of Fig. 3; Fig. 6 is an under side plan View of a multiple nail block such as is used in the machine of said cospending application, the dotted lines showing two selections of horse-shoes of nail holes.

In the embodiment of the invention selected for illustrative purposes, 2 inclifcates a reciprocatory cross head carrying a multiple nail block 4 provided with a large number of nail apertures 6, so that a horseshoe of nail holes of any desired dimensions,

Within certain limits, may be selected therefrom for use with aparticular size of heel.

Agang of drivers 8, one. for h of the nail holes with the nails apertures 6, is mounted in the lower end of a plunger 10. This plunger is reciprocated for driving nails, in the operation of attaching heels, by suitable mechanism indicated partly by a lever 12 fulcrumed at 11- in the cross head 2 and suitably connected to the plunger 10 and an operating rod 16. In the downward movement of the plunger 10 the lower ends of the drivers are brought to a position substantially flush with the lower face of the nail block. These parts all may be, and preferably are, substantially similar to those shown and described in the co-pending application of Thomas G. Plant heretofore referred to.

In order that the projecting nail heads on loaded heels may be readily inserted in the properly corresponding nail holes in the nail block 4:, there has been provided a series of removable templets 18.

Each templet has formed therein a horse-shoe of nail holes 20, etc., of different sizes, and so located that when any templet is superposed upon the nail block 47 its horse-shoe of holes will coincide with a similar and corresponding horse-shoe of holes in the great number of nail holes in the multiple nail block. A.

sullicient number of templets is provided to take care of all sizes and styles of heels to be operated upon by the machine.

The nail block 4 is provided at the rear of its exposed face with a pair of pins 22, slightly under-cut as shown in Fig. 6, and italso carries in its front face a pivotally mounted spring-pressed block 24 having a pin '26. Each templet is provided with a pair of holes 28 at rear. and with an apertured lip 30 extending upwardly at its front. In placing any selected templet upon the nail block the holes '28 are first passed over the pins 22- and the lip 30 is then forced upwardly past the pin 26 which recedes against its spring and finally snaps into position through the aperture in the lip 30. The templet is thus held securely in opera tire position on the nail block. \Vhen a templet, having a series of nail holes corresponding in number and location to the nails in the heel which it is desired to at tach, has been placed in position against the exposed face of the nail block. it is obvious that all nail apertures in said block, except the ones which it is desired to use, are covered. Therefore, when a templet has been so placed on the nail block' it is a very easy matter for the operator, by the'sense of touch alone, to place the nails projecting from a loaded heel through the nailholes in the templet and into the nail apertures in the nail block. In order further toassist the operator. however, in finding the nail rejecting from the loaded heel. some of t e nail holes inthe teniplet have been countersunk, ofiprovided with a sloping approach 32, as shown in 32 into engagement with the nail holes to which said approaches lead. and when these holes ,have been found by the nails in'the heel the remaining holes are necessarily also found and the heel may then be easily slipped upwardly through the templet and into the nail apertures 'in the nail block.

In order to provide for the necessary ressure on the tread face of the heel outsit c of .the horse-shoe of nails, as heretofore described as desirable, each of the templets 18 is provided with a raised surface 34 prpject-in}, above the level of the Surface of the templet in which the nail holes 20 are formed. This raised portion 3- is preterably sloping, extending outwardly and also upwardly from the surface inelosed by the horse-shoe of nail holes, so that there is formed substantially a. cup-shaped deprcs sion in the acting face ol each templet. The raised portion 34 extends closely around the perimeter of the selected horse-shoe of nail holes. lherefore, no matter what sizeof heel isbein c operated upon, this raised portion is always in the proper position relatively to the horse-shoe of nail holes in the nail block. at that time being used, to correctly and effectively impart the desired added compression to the outer portion of the tread face of the heel and thereby level up the tread face of the heel as is desirable for the reasons heretofore pointed out. As is well known to those skilled in the art; when the heel attaching con'ipression is relieved the portion of the heel ontsideof-the series of attaching nails will expand. or

spring back. somewhat. as there is no force to hold it under its full compression such, for instance as the clenched nails. This expansion will, of course. be greater at the extreme edgethan at the llne n'f nails. In order that the tread face of the heel may be level even after this varyingexpansion has taken place; the pressure placed on the heel should be greater at the extreme edge than farther in so that the excessive expansion at the edge may be compensated for. This is the purpose of the sloping form of the raised portion 34. above described. and shown most clearly by Fig". I).

By means of this invention hi only necessary for the operator to make a simple interchange of templets 1S whenever he changes efi'ected the new heel may be as readily placed in operating position in the machine the kind of heel upon which the machine 7 is to operate, and after the interchange is r lVhile' the particulars of construction herein set forth are well suited to one form v of the invention, itis not to be understood that these particulars are essential. since they may be variously modified within the skill of the artisan, without departing from the true scope of. the actual invention as,

and so arranged that when superposed on said nail block the series of holes in the templet coincide with the corresponding series in the nail block, andmeans for removably securing the templet upon the face of the-nail, block in position to contact with the worlc'as the nails are driven.

I 2. In a-heeling machine, 'a multiple nail block, drivers for entering said block, and a removable templet having a horseshoe of nail holes so selected that-when superposed on the nail block the horseshoe of holes in the tcmplet' coincide with a similar horseshoe in the nail block, and having a raised surface projectiuc above the nail holes from that portion of the face/of the templet in which the nail holes are formed and shaped to extend closely around the perimeter of the selected horseshoe of nail holes.

:3. As an article of manufacture a removable nail block 'templct for heelinginachines having a series of nailholes the approaches to some of said nail holes extending bver and being countersunk with relation to .the sur ace of the templet in which the holes are formed to engage nails on a loaded heel and direct them to the nail holes in positioninga heel.

4. As an article of mai'iufacture a removable nail block tem'plet for hceling machines) having a series of nail holes, the approaches to one or more of'said nail holes being provided with guiding means to facilitate their location by the l'n'ojecting; nails of a loaded heel. the sin-face about the series of nail holes projecting beyond the level of the nail holes. .5. In a machine of the chaiyacter descrilwd,

the combination of a nail block provided" with pins 22 and a spring catch 24.- in combination with a removable templet' having a horseshoe of nail holes to correspond to like holes in the nail block, said tcmplet ha ving holes 28 to engage the pins :22 and a lip 30.

.In testimony whereof. I have signed 'm name to'this specification. in the two subscribing witnesses.

presence of Witnesses:

WILLIAM (l. H'rswAn'r. REDFII-ILI) H. ALLEN.

Images