US445212A - Knife and pencil sharpener - Google Patents

Description

(No Model.)

J. H. WEST. KNIFE AND PENCIL SHARPENER.

Patented Jan. 211891.

Fry-. 4 C t; fl 5 inn STATES PATENT OFFICE.

.IAY HARRY \VEST, OF CHICAGO, ILLINOIS.

KNIFE AND PENCIL SHARPENER.

SPECIFICATION forming part of Letters Patent No. 445,212, dated January 2'7, 1891.

Application filed March 15, 1890. Serial No. 344,063. (No model.)

To all whmn it may concern:

Be it known that I, JAY HARRY WEST, of Chicago, Cook county, Illinois, have invented certain new and useful Improvements in Pencil and Knife Sharpeners, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

The object of my inventionis to provide a simple, cheap, and effective knife and pencil sharpener.

Practically speaking, it consists of an emery or sand paper holder which can be easily manipulated and to which strips of emery or sand paper of suitable sizes can be quickly secured and as easily removed when worn out, substantially as hereinafter fully described, and as illustrated in the drawings, in which Figure 1 is a perspective view of myinvention. Fig. 2 is a transverse section therethrough. Figs. 3, 4t, and 5 are detail views, each showing in perspective an element of said invention; and F g. 6 shows a transverse section through a modified form of my invention as set forth.

Referring to the drawings, A represents a holder made of any suitable material, preferably much longer thanv it is wide and of a proportionate thickness, as shown in the drawings. It is provided withlongitudinal grooves a a on each side, which are of such width as to leave the side edges of the holder in relief, and the side walls I) b of which are slightly undercut or inversely beveled.

B represents a key, which in general construction closely resembles a tuning-fork. Its legs or blades 0 c are separated from each other a distance corresponding to the thickness of thatpart of the holder lyingbetween grooves r1. Cb thereof, are of a length corresponding to that of the holder, are of a width corresponding to the width of grooves a a, and have their side edges beveled at an angle corresponding to angles of the under-cut of the side walls of said grooves. This key when in position for locking the emery-paper or other grinding or sharpening surface to the holder is pushed longitudinally upon the holder, so that each blade 0 enters a groove a on each side of said holder.

C represents a strip of sand or emery paper, which has its longitudinal side edges turned downward, one of which edges is then placed in each groove a, so that its downturned sides bear against the undercut side walls of the same. The key is then pushed into the holder, so that the emery-paper will come outside of it, and so that the side edges of said strip of emery-paper will be pinched and securely held between the opposing beveled edges of the blades thereof and the side walls of grooves a. Coarse emery-paper may be used on one side of the holder and fine emery-paper on the other side, if desired, so as to facilitate the sharpening.

I have in Fig. 6 shown a transverse section through a simplified form of my invent-ion, as hereinbefore described. This consists simply of a holder with a groove (1, similar in every respect to groove a of holder A, into which a key 6 is pushed to holdthe sand or emery paper or cloth. The only difference between key 6 and key is that the former has but one blade, whereas the latter has two. The blades of both keys are identical in 0011- struction.

In order to better insure the securing of the sand or emery paper on the outer surface of the key, I prefer to make the mouth of the grooves in the holders, or, in other words, the ends thereof into which the key is first inserted, slightly wider than the opposite end, slightly tapering, as it were, and make the blade of the key of corresponding shape and dimensions. This construction certainly insures the side edges of the sand-paper being held tighter and more firmly the farther the key is pushed into the groove.

The modification shown in Fig. 6 isintended more for the use of school and oflice purposes as lead and slate pencil sharpener. It can easily be secured to the under side of the lid of a school-desk by a couple of screws passing through the holder into the lid, and the sand-paper can at a very slight expense be replaced when worn out.

Instead of sand or emery paper, a leather strap could be held by my improved holder, thus converting it into a strop for razors, &c.

What I claim is- 1. The combination, with a holder having 7 slightly greater at one end than at the other,

a longitudinal groove therein, of a key having a blade of a width corresponding to that of said groove, within which it fits.

2. The combination, with a holder having a longitudinal groove therein, the side walls of which are undercut, of a key having a blade of a width corresponding to that of said groove, and having its longitudinal side edges beveled, so as to fit within the same, as set forth.

3. The combination, with a holder having a longitudinal groove therein of a width of a key having a corresponding width to the same and slightly tapering toward its outer end, so as to fit within the same, as set forth.

at. The combination, with a holder having a longitudinal groove therein of a width slightly greater at one end than at the other and having its side walls undercut, of a key having ablade the longitudinal side edges of which are-beveled, and which is slightly tapered so as to correspond to the width of said groove, so as to fit within the same, as set forth.

5. The combination, with a holder A, having a longitudinal groove a on each side, of the key B, having one end bifurcated, so as to provide two blades of dimensions corresponding to those of the grooves and separated such a distance apart that the part of the holder between grooves a a can enter between them, so as to fit within the same, as set forth.

6. The combination, with a holder A, having a longitudinal groove on opposite sides thereof, the side walls of which are undercut, of a key having one end bifurcated, so as to provide two blades of dimensions corresponding to those of the grooves, having their 1ongitudinal side edges beveled and separated such a distance apart that the part of the holder between grooves a a can pass between them, so as to fit within the same, as set forth.

'7. The combination, with a holder having a longitudinal groove therein, and a strip of emery-paper or similar fabric having its side edges downturned to reduce it to the width of said groove, of a key having a blade of a width corresponding to that of said groove into which it enters, so as to fit within the same, as set forth.

JAY HARRY WEST.

\Vitnesses:

WM. H. EBERLE, F. D. THOMASON.

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