US1224029A - Calk-plate. - Google Patents

Description

J. F. SMITH.

CALK PLATE.

APPLICATION FILED FEB. 5. 1917.

Patented Apr. 24, 1917.

JOSEPH F. SMITH, OF HEYBROOK, WASHINGTON.

CALK-IPLATE.

Specification of Letters Patent.

Patented Apr. 24, 1917.

Application filed February 5, 1917. Serial N 0. 146,611.

To all whom it may concern:

Be it known that I, JOSEPH F. SMITH, a citizen of the United States, and a resi dent of Heybrook, in the county of Snohomish and State of Washington, have invented certain new and useful Improvements in Calk- Plates, of which the followin is a full, true, and exact specification.

My invention relates to calk plates and has for its principal object: to provide an improved and novel means of removably attaching calks to the soles of a shoe; to provide means for retaining the calks in cooperation with the calk plate when the same is removed from the shoe. In logging oper ations it is necessary that the workmen wear ca-lked shoes and the usual method of fixing the calks to the shoesis to drive them in the soles. If the soles of the shoes are not very thick and of extremely hard leather the calks become easily detached and it is frequently necessary to renew them. In renewing the calks it is also necessary to drive them in a new place in the sole, as otherwise they will fall out easily. The repeated calking of the shoe soon renders the sole of the shoe leaky, and in other ways injures its life and usefulness. Applica-nts device is designed to overcome the above objections.

Other objects will appear as my invention is more fully explained in the following specification, illustrated in the accompanying drawings and pointed out in the appended claims.

In the drawings Figure 1 is bottom plan view of applicants calk plate shown detached from the shoe. Fig. 2 is an enlarged fragmentary sectional elevation of the same.

Referring more particularly to the drawings, numeral 1 indicates a calk plate which is preferably formed of rather thin spring sheet steel, and which is cut away centrally as at 2, and is provided around its periphery, both internally and externally with slots 3. The slots are preferably formed by stamping and the metal around them is somewhat raised as will be shown in Fig. 2 in order that a fiat headed calk 4 may be inserted in one of the slots. Backing strip 5 is riveted to the upper side of calk plate 1 and is substantially the same shape, but without any slots so that the head of the calk will bear against the backing strip. In placing the calks in the slots it is necessary to sep arate by means of a. pointed tool the calking plate and backing strip, after which the head of the calk is easily slipped under the calking plate. The inherent spring of the calk plate holds the calks in place. T he entire device is then fastened on to the sole of the shoe in any approved manner, but preferably by means of screws in order that it may be easily removed when it desired to use the shoes without the calks, or when it is necessary to place the calk plate upon another pair of shoes. A similar device, although of different shape may be utilized for the heels of the shoe if desired.

While I have shown a particular form of embodiment of my invention, I am aware that many minor changes therein will read ily suggest to others skilled in the art without departing from the spirit and scope of the invention, and I therefore desire to avoid being limited to the exact form shown and described.

Having described my invention, what I claim as new and desire to protect by Let ters Patent, is:

1. In a device of the class described, the

combination of a calk plate formed of spring material, and formed in substantially the shape of the shoe sole, slots formed around the periphery of the calk plate, a backing strip properly secured to the upper side of the calk plate, and flat headed calks which are retained in the said slots by means of the inherent spring of the calk plate.

2. In a removably attachable calk plate, the combination of a spring steel plate, having notches cut around its edges, a backing strip permanently secured to the upper side of said plate, and flat headed calks mounted in the said slits with the head between the backing strip and plate, whereby the inherent spring of the plate retains the calk within the slot.

JOSEPH F. SMITH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

Images