US1272910A - Shoe-stitching-machine attachment. - Google Patents

Description

F. E. BROWN.

SHOE SHTCHlNG MACHINE ATTACHMENT. APPLICATION FILED JULY 23, 1911.

1,272,910. Patented July m, 1918'.

amen/5oz WTE FRANK E. snows, or sea raancrsco, CALIFORNIA.

SHOESTITCHING-MACHINE ATTACHMENT.

Specification of Letters Patent.

Patented July 16, 1ll8.

Application filed July 23, 1917. Serial No. 182,254.

To all whom it may concern:

Be it known that I, FRANK E. BROWN, a citizen of the United States, and resident of San Francisco, in the county of San Francisco and State of California, have invented certain new and useful Improvements in Shoe- Stitching-hlachine Attachments, of which the following is a specification.

This invention. relates to new and useful improvements in shoe stitching machines, and the primary object of the invention is to provide an attachment adapted to be applied to the needle plate of a conventional and well known type of shoe stitching machine, that acts as a guard to render the channeling attachment on the needle plate inoperative. The channeling attachment 011 the needle plate of thewell known type of shoe stitching machines to which this device is adapted to be applied, is only for use, when the machine is stitching leather soles, as the same channels the soles, and stitches in said channel. here it is desired to stitch a sole formed of some rubber composition, the channeling operation is useless, and is detrimental to the stitching, as the same is liable to pull through- My attachment comprises a guard means which is adapted to be quickly applied m'er the needle plate, to cover up the channeling knife, so that the machine is adapted to stitch rubber composition soles, as well as leather soles, with no material change to the structure thereof.

Another object of the invention is to provide a device of this character, which is easily and simply constructed, inexpensive to manufacture, and one which will be very efficient in operation.

lVith these and numerous other objects in view, my invention consists of the novel features of construction, combination and arrangement of parts which will be herein referred to and more particularly pointed out in the specification and claims.

In the accompanying drawings:

Figure 1 is a longitudinal section through the guard plate, showing the same in position over a needle plate; and

Fig. 2- is a detached perspective view of the needle plate and guard plate.

In describing my invention 1 shall refer to the drawing in which similar reference characters designate corresponding parts throughout the several views.

The numeral 1 designates a needle plate,

such as is ordinarily used on a certain well known type of shoe stitching machine, said needle plate being provided with the conventional apertures 2 therein, through which fastening means are positioned to secure the plate to the machine. One end edge of the plate is inclined as shown at 3, and adjacent the same is a transversely extending elongated slot l, the purpose of which is obvious. The plate 1 is provided adjacent one end of the slot 4, with an upstanding channeling knife 5, which channels the shoe sole during the ordinary operation of the machine,

The above described parts, namely the needle plate and its construction are of the conventional type used on the certain well known type of machine, and form no part whatsoever of my invention. My invention comprises primarily a guard means, which is adapted to be positioned over the needle plate, so as to render the channeling knife inoperative, whereby the machine is adapted for use in stitching soles of rubber composition.

,in spaced superposed relation above said needle plate. It is obvious that the guard plate 6 is slightly larger than the needle plate, so that the downwardly bent flanges. will be disposed beyond the edges of said needle plate. The flanges will snugly cngage the edges of theneedle plate, so as to insure a positive engagement. between these parts.

In operation, when it is desired to obviate the use of the channeling attachmentor knife 5, so that the machine will stitch a rubber composition sole. without channeling the same. the guard plate (3 is positioned over the noodle plate 1. the downwardly projecting flanges .l thereon. snugly engaging the side edges of the needle plate, so that the top portion of the guard plate will be plate and stitched, without said; sole disposed in spaced superposed relation above said needle plate. The slot 8 in the guard plate will aline with the slot 4 in the needle plate, so as the machine will be adapted to operate in the conventional .manner. When are necessary to hold the guard plate in position, as .the pressure of the sole on the' same, and the snug engagement between the plates will be sutlicient to accomplish this purpose, and hold the plate in operative reof a shoe stitching machine,

of a guard plate lation.

' This attachment to a shoestitching machine will be found especially useful in shoe repairing shops, that specialize on quick work,- that is repairing the shoes while the customer waits. Heretofore to prevent channeling a rubber composition sole, it was necguard plate over the needle essary to entirely remove the needle plate, but by the use of this attachment, it may be quickly covered, so as to prevent the composition sole from being channeled, thereby creating a great savin in time and labor. The attachment may e very economically formed from a single piece of metal, of plainly simple construction. The attachment is applied without the necessity of additional fastening means, it only being necessary to place the plate, whereby the pressure of the shoe thereon while being stitched, and the snug engagement between.

the downwardly extending flanges, and the needle plate will insure the attachment against accidental displacement.

- hereto.

may .be had, 1

change may be made in said structure as do not depart-from the spirit and-scope of the invention as, claimed.-

Having fully described my invention,

what I claim asnew,

and desire to secure by Letters-Patent is 1. The combination with a needle plate an. upstanding channeling knife thereon, correspondingly shaped to said needle plate positioned over the same ,in spaced super- "posed relation, and flanges on the edges'of sa'id guard late adapted for frictional engagement with the sides of the needle plate to hold said guard plate in position,

2. The combination with a needle plate of a shoe. stitching machine having an elongated aperture therein, a channeling knife disposed adjacent said aperture, of a guard plate adapted to be'positioned over said needle plate, said guard plate having an alining aperture therein, and downwardly projecting flanges on the edges of said guard plate adapted to hold the same in superf posed spaced relation above the needle-plate,

whereby the channeling knife is rendered inoperative. v

In testimony whereof, I aiiix my s1gnature "FRANK E. BROWN.

(jopies o1 this patent may be obtained for five cents each, by addressing the fcommissioner of Patents,

- Washington, D. 0.

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