US1026671A - Pencil-sharpener. - Google Patents

Description

J. E. HAGER 511. H. PORTQEOUS.

PENCIL SHAEPENER. APPLICATION FILED DEG.11, 1911.

1,026,671 Patented May 21, 1912.

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1a- S k lax: F 19. 5 g 9 15 I 16 WITNESSES INVENTORS JohnEHagen (R- fioberbffparz-a gmmey UNITED STATES PATENT ornicn.

JOHN E. HAG-ER AND ROBERT E. PORTEOUS, YORK, N. Y.

PENOIL-SHARPENER.

Specification of Letters-Patent.

Patented May 21, 1912.

Application filed December 11, 1911. Serial No. 664,980.

I To all whom it may concern:

Be it known that we, JOHN E. HAGER and ROBERT H. Pon'rnons, citizens of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Pencil-Sharpeners, of which the following is a specification.

Our invention relates to pencil sharpeners and has for its object to provide asimple device which readily serves the double pur pose of a pencil point protector and a point sharpener.

With these and other objects in view, which will appear as the nature of the invention is better understood, the same consists in certain novel features of construction, as hereinafter fully described and claimed.

In the accompanying drawings: Figure 1 is an enlarged vertical sectional view. Fig.

which may be obtained by corres 'ndingly shaping the sharpening member. ig. 5 is a detail view of one of the sections.

In the drawings wherein like reference numerals indicate corresponding parts throughout the several figures,5representsa tubular sleeve or casing preferably of sheet metal having a somewhat restricted upper portion 6 and an enlarged lower portion 7.

The lower end of the portion 7 has the usual v indentations 18 for holding a rubber eraser if so desired. Y I

Confined within the portion 7 is the sharpening device 8 consisting of a plurality of tapering sections 9 of carborundum or other suitable material, which sections as best illustrated in Fig. 5 are of gradually increasing size from their upperends to the lower ends thereof; The inner faces of these sections are providedv with graduated file like projections 10 which decrease in size as they approach the lower ends of their respective sections- It will thus be seen that a conical; opening 11 is formed when. the several sections are assembledas just described. The pencil point is inserted in this opening 11, and by a relative oscillatory or rotary movement of the sleeve 5 and pencil 12 the file. surfaces 10 quicklyremove the wood from the pencil.

To prevent thewaste material from clogging up and interfering with the operation of the sharpener, the marginal inner adjacent faces of each section 9 are formed perfectly smooth to produce inclined pockets or recesses 13 between the toothed portion of the sections. These pockets can be emptied after the pencil has been sharpened and removed by inverting the sleeve 6 and subjectmg'the latter to a sharp blow. The finer waste materials, principally the scrapings from the lead tip escape into a pocket-.14: formed inthe sections 9 adjacent their bases. It will be seen from an inspection of Fig. 1, that the pocket 14 is in reality composed of a plurality of grooves 15 in the several sections 9 which when the sections are assembled reglster. A transverse channellG-leads from the pocket 14. to oppositely disposed openings 17 in the sleeve 6.

While we-have shown and described thesharpener 8 as made up of a plurality of sections it is obvious mat it would not involve invention to make the sam of a single piece of wood or other material.

By slightly altering thecurvature of the inner faces of the sections 9 it will be seen that the taper imparted to the pencil being sharpened can 'be of any desired shape or slope.

It has graduating the teeth 10 from fairly coarse at top to finer at the bottom the danger of breaking the lead is flgreatly lessened without impairing the e ctiveness or rapidity of the sharpening operation. Having thus described our invention, what we claim is:

A pencil sharpener comprising a tubular sleeve adapted to fit over the end of a pencil,

a plurality of tapering sections within said 95 sleeve, said tapering sections bein grooved to form a pocket, the inner walls 0 said sections being spaced to form a conical opening, file like project-ions on the inner faces of said sect-ions, and said sections having 100 smooth portions adjacent their abutting side edges to form inclined pockets:

In testimony whereof we afiix our signatures inpresence of 'two witnesses.

.JOHN E. HAGER.

ROBERT H. PORTEOUS.

Witnesses:

GEORGE H. BRUCE, FRANCIS L. KRAMER.

been found in practice that by

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