USRE14810E - Thumb-tack - Google Patents

Description

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V APPLICATION FILED DEC 3. I919 Reissued Mar. 2, 1920.

UNITED STATES PATENT OFFICE.

PATRICK C. NESTOR, 0F PHILADELPHIA, PENNSYLVANIA.

THUMB-TACK.

Specification of Reissued Letters Patent. Reissued Mar. 2, 1920.

Original 1T0. 1,320,901, dated November 4, 1919, Serial No. 199,320, filed October 30, 1917. Application for reissue filed December 3, 1919. Serial No. 342,807.

To all whom it may concern Be it known that I, PATRICK C. NnsToR, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a new and useful Thumb-Tack, of which the vfollowing is a specification.

proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed without departing from the spirit of the invention.

n the accompanying drawings the preferred form of the invention has been shown.

In said drawings Figure 1 is a plan view of the thumb tack embodying the present improvements.

Fig. 2 is a central section therethrough.

Fig. 3 is a view similar to Fig. 2 but showin a modified structure.

ferring to the figures by characters of reference 1 designates the pointed stem of the tack, the same being provided with a dished or concave convex head 2. Formed in this head at diametrically opposed points as shown in Fig. 1.

It will be apparent that the thumbtack can be pressed into a board in the ordinary manner. When it is desired to remove it,

' it is merely necessary to insert the finger shown in Figs. 1 and 2.

nails into the slots 3 and to pull u wardly.

The nails will enter the head end a ove the and bottom of the head and the slots 5 are I formed in this shoulder. With this arrangement it is easier to insert the nails of the fingers than with an arrangement such as However both forms can be used efiiciently.

What is claimed is:

1; A thumb tack including a concavo-con vex disk of uniform thickness provided with opposed arcuate slots, the opposed edges of that portion of the disk between the slots being convex from end to end and spaced above the plane occupied by the marginal portion of the disk, thereby to provide finger nail receiving spaces.

2. A thumb tack including a concavo-convex disk of uniform thickness provided with a central raised portion forming an annular ception of finger nails, the inner edges of the slots being eccentrically disposed relative to the disk and spaced from the plane occupied by the margin of the disk.

3. A thumb tack including a disk provided with opposed arcuate slots, the opposed edges of that portion of the disk beare slots 3 preferably eccentrically arranged PATRICK 0. NES OR.

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