US466077A

US466077A - Jacob d

Info

Publication number: US466077A
Authority: US
Publication date: 1891-12-29
Anticipated expiration: 1908-12-29

Description

No. 466,077. Patented Dec. 29, 1891.

NITED STATES ATENT FEE".

JACOB D. EGLER, OF PITTSBURG, PENNSYLVANIA, A SSIGNOR OF ONE-HALF TO JOHN GAMBLE, OF SAME PLACE. I

PENClL-SHARPENER.

SPECIFICATION forming part of Letters Patent 110,466,077, dated December 29, 1891.

Application filed November 28, 1890. Serial No. 372.803. (No model.)

To all whom it may concern.-

Be it known that I, J AOOB D. EGLER, a resident. of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Pencil-Sharpeners; and 1 do hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to pencil-sharpeners,

to its object beingto provide a simple yet efficient device which can be manufactured so cheaply that the average primary scholar may possess one for personal use.

Many forms of pencil-Sharpeners have been devised, the most general forms being provided with cutting or grinding faces in the shape of knives or files, into contact with which the pencil is brought and by a movement imparted to the cutting-faces or the penoil itself, whereby the pencil,through the cutting action of the knives or files, is sharpened to the desired degree. These knives or files, however, increase the cost of the sharpeners and place them beyond the possession of the 2 5 average scholar.

My improved sharpener is so simple that it maybe used with effect by small children; and it consists, generally stated, in a ring of metal or other suitable material having its 0 inner surface coated with an abrading substance, so that when the end of the pencil is brought into contact with the inner surface of said ring and is swung around within the same, thus causing its point to travel over the 3 5 abrading substance, a sharp point is rapidly formed on the pencil.

To enable others skilled in the art to make and use my invention, I will describe the same more fully, referring to the accompanying 4o drawings, in which- Figure 1 is a perspective view of my improved sharpener. Fig. 2 is a cross-section thereof. 7

Like letters indicate like parts.

The ring a may be formed of metal or any other suitable material possessing the requisite strength and of any curvilinear outline. The said ring a is preferably constructed with the concave periphery a and the consequent 5o convex surface 0, although a flat inner and outer surface may be employed with almost similar results. The inner surface a is coated with some suitable abrading substance b, such as emery or other gritty material, applied in such a manner as to adhere tenaciously to the said inner surface (1 the said periphery having had first applied to it some mucilaginous substance for retaining the abrading material thereon.

Upon the periphery a is the loop or ring c, to which a cord may be attached to suspend the sharpener from the slate or person of the scholar.

To sharpen a pencil with my improved sharpener, the ring a is grasped in one hand, with the fore finger and thumb resting in the concave periphery a at opposite sides thereof. The pencil is held in the other hand, and when brought into contact with the inner convex surface a a quick swinging or circular movement is imparted to the end of the pencil, with the end thereof always in contact with the abrading substance I) and following the direction of the periphery of the ring a. This swinging movement is continued until the pencil has been reduced to a fine point. The convex inner surface a tapers the point more readily than a flat face, while the concave periphery enables the ring to be grasped more firmly during the operation of sharpenmg. I

Practical experieucehas proven that a pencil sharpener embodying the construction shown is very durable and can be produced at small cost.

\Vhat I claim as my invention, and desire to secure by Letters Patent, is-

1. A pencil-sharpener consisting of a ring of metal or other suitable material having its inner surface coated with an abrading substance, substantially as and for-the purposes set forth.

2. A pencil-sharpener consisting of a ring of metal or other suitable material having a convex inner surface coated with an abrad- 5 ing substance, substantially as and for the purposes set forth.

3. A pencil-sharpener consisting of a ring of metal or other suitable material having a concave periphery, the inner surface of said periphery being coated with an abradingsubvex surface (t the abrading substance I), and stance, substantially as and for the purposes the loop 0, substantially as and for the purset forth. poses set forth.

4. A pencil-sharpener consisting of a ring In testimony whereof I, the said JACOB D. 5 of metal or other suitable material having a EGLER, have hereunto set my hand.

concave outer periphery and a convex inner JACOB EGLER. surface coated with an abrading substance, substantially as and for the purposes set forth. \Vitnesses:

5. The combination of the ring at, having J. N. COOKE, 10 the concave outer periphery a, the inner con- 1 ROBT. D. To'rrEN.