US460608A - Combined eraser and pencil-sharpener - Google Patents

Description

G. W. WASHBURN.

COMBINED ERASER AND PENCIL SHARPENER.

(No Model.)

Patented Oct. 6, 1891.

GoRc: W. WH$HBURN v GEORGE V. WVASHBURN, OF VEST NEW BRIGHTON, NE\V YORK.

COMBINED ERASER AND PENClL-SHARPEN-ER.

SPECIFICATION forming part of Letters Patent No. 460,608, dated October 6, 1891.

Application filed May 20, 1891.

To all whom it may concern:

Be it known that I, GEORGE W. WASHBURN, a citizen of the United States, and a resident of West New Brighton, in the State of New York, have invented a new and useful Improvementin Erasers and Pencil-Sharpeners, of which the following is a specification.

This invention relates, primarily, to combined erasers and pencil-sharpeners of that form in which a rigid blade projects endwise from a suitable handle, but may be embodied, in part, in separate erasers and pencil-sharpeners of the same general form, and in a preferred style a paper-burnisher is combined with an eraser and pencil-sharpener.

The invention consists in certain novel features of construction or combination of parts hereinafter set forth and claimed, whereby a burnisher is readily combined with adoubleedge eraser,provision is made for rapidly cutting away the wood of ordinary lead-pencils, supplemental lead-Sharpeners are conveniently added, and the whole is embodied in a simple and neat article of manufacture.

A sheet of drawings accompanies this specification as part thereof.

Figure 1 of the drawings is a side view of a combined eraser and pencil-sharpener embodying all the several features of this invention. Figs. 2 and 3 are front and back views of its upper end. Fig. 4 is an elevation of the blank from which the metallic portion of the article is preferably formed. Fig. 5 is a side view of the blade end of a combined sponding parts in the several figures.

The improved articles of manufacture illustrated by the several figures have in common a suitable handle A and a rigid blade 13, the handle of any suitable material and any approved shape and the blade of steel, and the parts may in all the several forms be connected endwise by a tang won the blade part, as representedin Figs. 1, 4, and 10.

In the preferred species represented by Figs. 1 to 4, inclusive, the blade B has a pair of erasing-edges a a at one edge of its lancetshaped mainportion, the same being formed at the margins of parallel flat sides by a V- shaped-edge groove. A burnishing-surface b is formed by the smoothly-rounded back of said lancet-shaped portion of the blade. An arc-shaped cutter c is formed transversely in an otherwise fiat shank connecting said lancetshaped portion with the tang 0c, and a pair of cutting-notches d 6, respectively large and small, are formed in the cutting-edge of said shank portion above and below said cutterc. The extremity of said lancet-shaped portion forms a sharp holding-pointf.

This combined eraser and pencil-sharpener is readily formed from a single metallic blank of the shape represented by Fig. 4, the same being folded on the dotted line y before or after it is beveled at a a to form the erasingedges and before or after its shank portion .2 is fashioned into the pencil-sharpener. The burnishing-surface b is subsequently formed by grinding the fold edge.

In the combined eraser and pencil-sharpener represented by Figs. 5 to 8, inclusive, the blade B is constructed in any approved manner with pairs of erasing-edges a at both sides of its lancet-shaped main portion, the several edges being formed or separated by V-shaped-edge grooves, as above, and an arcshaped cutter c, to constitute the pencil-sharpener, is so shaped as to be adapted to be formed within the original thickness of the metal by cutting or grinding. A sharp holding-point f is formed by the extremity of the lancet-shaped portion, as before.

In the separate pencil-sharpener represented by Fig. 10 the blade portion B is provided with an arc-shaped cutter c, as above described, with or without the said cuttingnotches d e, as represented in dotted lines, and terminates in a sharp holding-point f, corresponding in function with those at the extremities of said lancet-shaped-main portions of the combined erasers and pencilsharpeners, as above described.

The erasing-edges are used in the same manner as those of ordinary erasers of the same general form, but with double speed if two are used simultaneously, and they are readily sharpened in pairs by any person in the manner illustrated by Fig. 9, where C represents a Whetstone having angular edges, to which the erasing-edges are applied as indicated in the figure, so as to sharpen them within the groove which separates them. Two edges are thus simultaneously sharpen ed with great facility.

To use the pencil-sharpening cutters, the sharp pointf is pressed into a fixed object, as the edge of a desk or table, and the pencil is drawn at the desired angle across the edge of the cutter 0, within its concavity, until the wood is tapered to the required extent, after which the lead may be reduced to a point by means of the cutting-notches (l 6, used successively. It will be seen that the separate pencil-sharpener (represented by Fig. 1.0) is adapted to be used in this manner, notwithstanding the omission of the erasing and burnisliing portions of the other forms.

The proportions of the respective portions of the blade may vary, as illustrated by the drawings, and other like modifications will suggest themselves to those skilled in the art.

Having thus described the said erasers and peneil-sharpeners, I claim as my invention and desire to patent under this specification l. The combination,with a suitable handle A, of a rigid blade B, proj ecting endwise from such handle and constructed with a pair of erasing-edges a, separated by a V-shaped groove and formed at one edge of a lancetshaped main portion by the respective edges of a folded blank, and with a burnishing-surface I) at the back edge of such main portion formed by the fold of said blank, substantially as shown and described.

2. The combination, with a suitable handle A, of a rigid blade B, projecting endwise from such handle and constructed with a main portion having erasing-edges a and with an areshaped pencil-sharpening cutter 0, having its cutting-edge at one edge of the blade, substantially as shown and described.

3. The combination, with a suitable handle A, of arigid blade B, projecting endwise from such handle and constructed with an areshaped pencil-sharpening cutter 0, having its cutting-edge at one edge of the blade, and with a sharp holding-point f at the extremity of the blade, substantially as shown and described.

4. The combination,with a suitable handle A, of a rigid blade B, projecting endwise from such handle and constructed with an areshaped cutter c for tapering the wood of a lead-pencil, one or more cutting-notches (Z (2 for sharpeningthe lead. and a sharp holdingpoint f at the extremity of the blade, substantially as shown and described.

5. ACOlllblIlGd eraser and pencil-sharpener composed of a suitable handle A and a rigid blade B, projecting endwise from such handle, said blade being constructed with apairof erasing-edges separated by a V-shaped groove at one edge of a lancet-shaped main portion, a burnishing-surface at the back edge of said main portion, an arc-shaped cutter and a pair of cutting-notches for successive use in the shank of the blade, and a sharp holding-point at the extremity of said main portion, substautially as shown and described.

GEO. V. VASIIBURN.

Witnesses:

(J. H. ZELLERS, J L. EwIN.

Images