US1395241A - Pencil-sharpener - Google Patents

Description

S. WHITEHEAD.

PENCIL SHARPENER.

APPLICATION FILED MAY 15, 1914- 1,395,241 Patented- Oct. 25, 1921.

UNITED STATES I SAMUEL WHITEI'IEAD, 0F ROMFOED, ENGLAND.

PENCIL-SI-IABPENER.

Application filed May 15, 1914.

Specification of Letters Patent.

Patented Oct. 25, 1921.

Serial No. 838,796.

(GRANTED UNDER THE PROVISIONS OF THE ACT OF MARCH 3, 1921, 41 STAT. L, 1313.)

To all whom it may concern:

Be it known that I, SAMUEL \Vnrrnr-rnan, engineer, a subject of the .King of Great Britain, residing at 1 Hope Villas, Clydesdale Road, Romford, Essex, England, Great Britain, have invented certain new and useful Improvements in and Relating to Pencil- Sharpeners, set out in the annexed specification; and I do hereby declare the following to be a full, clear, and suflicient description of my invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in and relating to pencil Sharpeners of the kind in which a helical cutter is caused to revolve around the pencil in order to sharpen same, and it has for its primary object certain improvements whereby the cutter may be adjusted after re-sharpening in order to maintain it at the requisite distance from the axial line of the pencil.

In order that the invention may be the better understood drawings are appended in which Figure l. is a side elevation of a pencil sharpener embodying the present invention.

Fig. 2. is a front end elevation of the revoluble member of the sharpener with the frame and cutter thereon.

Fig. 3. is a plan View of the parts shown in Fig. 2.

As illustrated in the drawings, a indicates the main frame of the sharpener and which frame is shown in dotted lines in Fig. 1. The frame is provided with a hearing a in which is revolubly mounted the circular extension a? on the body a and which body at its opposite end terminates in a tubular portion 6 through which the pencil passes and by which it is held during its presentation to the cutter. The central portion a of the revoluble member is inclined as shown so that the inner end of the guide I) is open to permit the cutter to act upon the pencil. The parts a and a? are in axial alinement and the outer end of part a is reduced and provided with a screw thread to permit the ready attachment of the handle 0 whereby the body a is rotated, and

. which handle moreover serves to prevent the inward movement of the said body (4 he opposite end movement of part a is prevented by an upstanding check or projection upon said body.

The cutter cZ above referred to is of the usual'helical type, but as distinguished from the known arrangements the cutter is of little or no greater length than the length of the pointed end of the pencil. This reduction of the length of the cutter, as will he readily understood, is due to the fact that 1ts support may be adjusted after each sharpening operation to compensate for the reduction of its diameter due to such resharpening.

Atone end of the cutter there is provided a pinion e engaging an internally toothed annular body f shown dotted in Fig. 1. and which body is secured to the aforesaid frame a. Pivotally mounted upon the body a is a frame 9 of a substantially U shaped form, having the end pivoted in lugs 9 A lug g is provided upon the transverse member g of the frame, through which passes a screw it whereby in conjunction with the spring 2' the distance of the axis of the cutter from the axial line of the pencil is regulated. A lug j is provided upon the member a into which the screw it is tapped. A stop is provided for regulating the extent of longitudinal movement of the pencil and consequently the fineness of the point. The stop comprises an arm or lever 70 pivotally mounted at m upon the under side of the transverse member 9 of the frame 9. This arm is although pivotally mounted forms a tight fit on the pivot so that when afforded a certain movement to the right or left, the arm will retain its position until a further movement is imparted to it. By employing a simple arm or lever such as 70 a much greater range of adjustment is obtained whereby the pencil point produced may be either very blunt or of exceeding fineness. As already explained, by means of the frame 9 the length of the cutter can he considerably reduced, as the extra length of cutter heretofore necessary was required so that as the diameter of the cutter was reduced, the pencil could be pushed farther into the guide, so that the rear or inner end of the cutter could act thereon. This longitudinal advancement of the pencil also necessitated an advancement of the guide holding the pencil up to the cutter. Both these requirements are obviated by means of the present invention permitting the use of a fixed pencil guide and shorter cutter.

The cutter is supported at one end by a pivot and at the other by a setscrew Z provided With a lock nut Z by means of which the cutter can be removed with a minimum expenditure of time and trouble. A suitable case or cover may be provided for the rotating parts and if desired, provision can be made for holding the pencil against rotation.

Having thus described my invention What I desire to secure by'Letters Patent of the United States is as follows In a pencil sharpener of the character described comprising a stationary and a revoluble member, an adjustable support for the cutter pivotally mounted upon said revoluble member, a screw connecting said support With said revoluble member, and a spring interposed between said support and said revoluble member, substantially as described.

In testimony whereof I affix my signature in presence of tWo Witnesses.-

SAMUEL l/VHITEHEAD. Witnesses:

W. E. ROGERS, O. J. WORTH.

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