US505695A

US505695A - Pencil-sharpener

Info

Publication number: US505695A
Authority: US
Publication date: 1893-09-26
Anticipated expiration: 1910-09-26

Description

NITEI) STATES PATENT OFFICE.

EDWARD HENRY BOEHME, OF CHICAGO, ILLINOIS.

PENClL-SHARPENER.

SPECIFICATION forming part of Letters Patent No. 505,695, dated September 26, 1893..

Application filed December 10,1892. Serial No. 454.687. (No model.)

To all whom it may concern:

Be it known that I, EDWARD HENRY BOEHME, of Chicago, in the county of Cook and State of Illinois, have invented a new and Improved Pencil-Sharpener, of which the following is a specification, reference being had to the annexed drawings, forming a part thereof, in which- Figure 1 is a perspective view of my improved pencil sharpener. Fig. 2 is a perspectlve view of the guide or support for the movlng parts. Fig. 3 is a perspective view of the pencil support. Fig. 4 is a longitudinal section taken on line 44. in Fig. 5; and Fig. 5 we transverse section taken on line 5-5 in Fig. 4, looking in the direction indicated by the arrow.

Similar letters of reference indicate corresponding parts in all the views.

The object of my invention is to construct a pencil sharpener in which the wood is out 1n the direction of the grain in the same manner as when the pencil is sharpened by means of an ordinary knife, so as to give the pencil polnt a smooth and finished appearance.

My objectalso is to provide a sharpener in which the lead will be supported during the operation of sharpening, thereby avoiding the breaking of the pencil point.

My invention consists in a guide, a pencil holder placed in the guide, and a slide arranged to move in the guide and provided with a cutter for cutting away the wood and the lead of the pencil, all as will be hereinafter more fully described.

The guide A, which supports the movable parts, consists of a rectangular block-having a deep central longitudinal groove a, with lateral grooves 19 near the top of the block. In the groove to is pivoted a block B. The pivot 0 upon which the said block swings is located near one end and above the center of the block. The said block B is perforated longitudinally from its free end with a hole a, which is partly conical and partly cylin drical. The conical portion of the hole intersects the upper surface of the block, so that a pencil inserted in the cylindrical part of the hole will project slightly above the upper surface of the block, in position to be acted upon by the cutter. The upper corner of the pivoted end of the block 13 is rounded to facilitate sharpening the lead by means of a file or otherwise, after the wood has been removed by means of the plane 0.

To the endof the block 13, is secured a pencil-support 0 which extends from the end of the block parallel with the cylindrical part of the hole 0', and is provided at its outer end with a ring of the same diameter as the hole 0' for receiving and guiding the pencil. The arm f of the support c is slotted and extends downwardly over the lower portion of the end of the guide A, to receive the screw 9 by means of which the said slotted arm may be clamped to the end of the guide A, thus holding the block B in any desired position.

To the grooves 19 is fitteda plane 0, provided with a cutter or plane iron at, furnished with a screw-threaded shank to which is fitted a milled nut e. The plane extends obliquely through the body of the plane, and the top of the body of the plane is provided with an turning the pencil, and at the same time swinging it upward, together with the pivoted block B until the desired angle is reached, when the block is clamped in the position of use. As the chips are removed from one side of the pencil it may be gradually pushed forward until the lead of the pencil is reached; beyond this the operation may be continued until a point of the desired length and fineness is secured. The cutter or plane iron (Z is readily removed for sharpening after swing ing the slotted plate e, so as to disengage it from the nut e.

It is obvious that my improved sharpener may be made of wood, metal, or other matetial suited to the purpose, and it may be made in rectangular form, as shown, or in any other suitable shape; therefore I do not limit or confine myself to any particular materials or to any special form for my improved pencil sharpener.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. In a pencil sharpener, the combination of the guide A, the longitudinal block 13 pivoted in the guide A, means for adjusting the said block and holding it in the position of use, and the sliding plane 0, fitted to the guide A-and provided With a cutter, substantially as specified.

2. In a pencil sharpener, the combination with the cutter provided witha screw-threaded shank, of a swiveled nut e for adjusting the cutter, substantially as specified.

v3. The combination with the plane body, of a cutter provided with a screwthreaded shank, a nut placed on the shank and furnished with a circumferential groove, and a slotted plate pivoted to the plane body and adapted to engage the circumferential] y grooved nut, substantially as specified.

4:. In a pencil sharpener, the block 13 pro- Vid ed with a conical hole intersecting the surface, and provided with a rounded end to facilitate sharpening the pencil, substantially as specified.

5. The combination, with the pencil-holding block B and guide A,:of the pencil guide 0 formed of .an angled bar having one arm slotted for engagement to the block, and the other arm provided with a ring arranged axially in line with the longitudinal perforation of the block B, as specified.

6. In a pencil sharpener, the combination of the guide A, provided with the grooves a, b, the block B pivoted in the groove on and perforated longitudinally, with the conical hole intersecting the surface of the block, and the plane 0 fitted to the grooves b of the guide A, and furnished with a cutter or plane iron d, substantially as specified.

EDWARD HENRY BOEl-IME.

Witnesses:

0. SEDGWICK, E. M. CLARK.