US352455A - Pencil-sharpener - Google Patents

Description

(No Model.) E. B. DUNN.

PENCIL SHARPENER.

No. 352,455.v Patented Nov. '9, 1886.

Suva/14km 2 I I 3513J lbfomwus )afwmd witness 0o NITED STATES "PATENT. OFFICE.

EDWIN BRUCE DUNN, OF -WEST OARROLLTON, OHIO.

PENC'lL-SHARPENER.

SPECIFICATION forming part of Letters Patent No. 352,455, dated November 9, 1886.

Application filed June 16, 1886. Serial No. 205,353. (No model.)

I 0 aZZ whom it may concern.-

Be it known that I, EDWIN BRUCE DUNN, a citizen of the United States, residing at West Oarrollton. in the county of Montgomery and State of Ohio, have invented a new and useful Improvement in Pencil-Sharpeners, of which the following is a specification.

My invention relates to improvements in pencil-sharpeners; and it consists of the details of construction and arrangement of parts, substantially as hereinafter set forth, and specifically pointed out in the claim.

The object of my invention is to provide a device of the character mentioned which can be attached to a slate or desk, so as to be convenient for the scholar to sharpen his pencil when desired, or which may be held in the hand for the same purpose.

A further object is to providea pencil-sharpener which will be thoroughly efficient and cheap'to manufacture.

I have illustrated a pencil-sharpener embodying my improvements in the accompanying drawings, in which Figure l is a perspective view of my device attached to a slate. Fig. 2 is a longitudinal sectional view. Fig. 3 is a side elevation of the device detached from the slate.

Referring to the drawings, in which similar letters of reference denote corresponding parts in the several figures, A designates my improved pencil sharpener, which is formed, preferably, of wood, having a groove, B, provided on its upper face to allow a pencil to move without impediment back and forth, and prevent it from slipping off. In the ends of this strip A are provided holes or openings to and a, to allow the passage of screws or similar means to fasten the device to a slate or desk. On the under side of this strip, about the center, it is cut out in slanting lines to provide the converging walls 0 and O, which extend to the top or upper grooved face of the strip and provide a slit or opening, D.

Resting flat against the inclined wall 0 is an adjustable blade or knife, E, which has its sharp outer or upper edge projecting through the slit or opening D. This blade or knife E is provided wit-h the slit or cut-out portion E, through which passes a screw, F, provided with a washer, f, to secure the said knife to the inclined wall C. It will be seen from this construction that the slit in the blade allows it to be adjusted up and down, so as to make more or less of the knife-edge protrude above the grooved channel in the face of the strip, and that the screw will securely hold it in any adjusted position. This strip is also cut out on each side of the walls 0 O, as at G, to permit a screwdriver to enter, to operate the adj ustable means for the knife.

The operation of my invention will be readily understood from the foregoing'description, taken in connection with the annexed drawings.

The device is secured upon a slate or desk. The blade is adjusted so as to project above the longitudinal channel or groove, and'the pencil is moved back and forth in the said groove, coming in contact with the knife-blade, thereby neatly sharpening the same, the shavings and dust from the pencil falling through the opening D down onto the slate or desk, where it may be easily brushed away.

The advantages of my device are numerous. It provides means for adjusting the blade without removing the device from the slate, as a knife-blade or chisel can be readily utilized, by means of the recesses G in the sides of the strip, to engage the head of the screw to either adjust the knife or entirely remove it for sharpening purposes, without removing the device itself. a l

. Mydevice is also very neat and ornamental in appearance, will prove to be of great utility in schools and offices, and can be manufactured and sold at a very low price, so that it may be placed in the hands of all who desire it. I

I am aware that it is old to provide a pegwood sharpener with an adjustable knifeon the under side to project through an opening of the bottom; but this peg-wood sharpener could not be attached to a slate-frame for use as a pencil-sharpener. In my construction I provide an elevated straight portion having a channel or groove for the pencil to run in, so that the movement of the pencil is not impeded or limited by a friction-roller, such as they use in peg-wood Sharpeners. The reduced ornamental ends of the body are out of the path IOC of movement of the pencil, and are employed to receive the attaching means to secure the sharpener to the desk or slate-frame. Furthermore, the body of the sharpener is en tirely closed, except the opening G, and is substantially rectangular in form, the opening G allowing for the escape of the Whittlings from the pencil, and also enabling the adjustment of the knife to be effected without taking the sharpener off the slate or desk. The knife-blade is thus partially concealed from sight, and still provision is made for its convenient adjustment.

Having thus described my invention, I claim- A pencil-sharpener consisting of the body A, having the elevated portion and the re duced ornamental ends provided with openings to receive screws or other suitable means in attaching the body to a slate frame or desk, the said body being entirely closed, except at a point, G, 011 the sides, where an opening is cut out, the opening D at the top of the elevated portion of the body, the walls GCwithin the opening G, and an adjustable blade, E, fitted to one of the Walls 0 G and projecting through the opening D, as set forth.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in presence of two witnesses.

EDWIN BRUCE DUNN.

Witnesses:-

E. W. HANLEY, WV. A. REITER.

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