US668226A - Knife-sharpener. - Google Patents

Description

, No. 668,226. Patented Feb. I9, l90l` c. F. sHoEMAKEn.

KNIFE SHABPENER.

(Application led Aug. 15, 1900.)

(No Model.)

ivrrniu STATE@ fiarnnr werden.

CHARLES F. SHOEMAKER, F'ALLEGHENY, PENNSYLVANIA.

ibllFE-Sl-IARPENER.

SEECIFICATION forming part of Letters Patent No. 668,226, dated February 19, 1901.

Application iilad August 15, 1900. Serial No. 26,918. (No model.)

To afl wltmn it may concern:

Beit known that I, CHARLES F. SHOEMAKER, a citizen of the United States of America, residing at Allegheny, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Knife-Sharpeners; and I do hereby declare the following to be a full, clear, and exact description thereof, reference being had to the accompanying drawings, which form a part of this specification.

This invention relates to certain new and useful improvements in knife-Sharpeners.

The invention relates particularly to a device for sharpening table-knives; and the object thereof is to provide a simple and effective device for the above-described purpose,which is not liable t0 get out of order and which can be manufactured at comparatively small cost.

With the above object in view the invention finally consists of the novel combination and arrangements of parts, as will be hereinafter more fully described in detail.

In describing the invention in detail reference is had to the accompanying drawings, which form a part of this specification, wherein like detail parts are designated by numerals of like character, in which- Figure lis a plan view of my improved device. Fig. 2 is a side elevation of the same. Fig. 3 is a side elevation showing parts thereof in section. Fig. 4 is a plan view of th'e plate with the mechanism removed.

In said drawings the numeral l designates a plate having the abutments 2 and 3, the latter abutment terminating in a handle 4.

- Openings 5 and 5 are formed through the plate adjacent to said abutments. The underside of the plate has formed thereon the boss 6, and extending from this boss is a pin 7. Upon the upper side of the plate and at the center thereof is formed a small rib 8. A thin plate Fitted within the openings 5 and 5 of the plate 1 are the tubular brackets l5, having the ears l5' formed thereon. These brackets are secured to the plate l by means of screws lo'. Loosely iitted within these tubular brackets are the plungers 17, having fiattened ends 17. Pivotally secured uponthe iiattened ends of these plungers, by means of the screws 18, are the conical antifriction-rollers 19. Within the tubular brackets at the rear of the plungers are fitted the spiral springs 20,which serve to keep the antifriction-rollers in forced contact with the emery-block.

To sharpen a knife, the device is grasped at the handle. The blade of the knifeis then inserted down between the edge of the guideplate 13 and the roller 19 at one side of the emery-block, as shown by dotted lines at Fig. 2. When the knife is drawn from heel to point between the roller and emeryblock, the roller is forced away from the block a sufficient distance to exert pressure upon the blade to cause a cutting of the blade againstv the emery when drawn therethrough. When the one side of the blade has been ground, it is reversed and drawn between the emeryblock and roller on the opposite side in the same manner. By this means the knife is ground true upon both sides to a ne edge. Should it require great eort to draw the blade between the emery-block and rollers, the device may be pivotally secured to a hole in a table or other convenient place by means of the piu 7. By this means it may be iirmly. held in position and reversed quickly, if desired. The plate of soft metal 9 prevents the edge Abeing destroyed should it come in contact therewith.

I do not desire to be coniined to the use of emery as a cutter, as certain grades of stone and other artificial material may be employed with like results. Again, the detail parts may be altered in various ways without departing from the principle orcombination employed.

Having thus fully shown and described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. A knife-Sharpener, comprising a plate having a handle thereon, a block of cuttingV material rigidly mounted upon said plate, and a conically-formed rotatable guide arranged IOO material mounted upon said plate, and al spring-actuated rotatable guide arranged at each side of said block to cause the knifeblade to engage the block when drawn therethrough, as set forth.

3. A knife-Sharpener, comprising a plate having a handle thereon, a block of cutting material mounted upon said plate, a conical roller rotatably arranged at each side of said block to direct the knife-blade into engagement therewith, and springs to press said rollers toward the block, as set forth.

4. A knife-Sharpener, comprising a plate having a handle thereon, a block of cutting material mounted upon said plate, a guideplate projecting over the sides of the block withmeans of securing the block in position, a conical roller rotatably arranged at each side of said block to direct the knife-blade into engagement therewith, and springs to press said rollers toward said block, as shown and set forth.

5. A knife-Sharpener, comprising a plate having a handle thereon, a block of cutting material mounted on said plate, a guide-plate projecting over the sides of said block with means of securing the block in position, a conical roller rotatably arranged at each side of said block to direct the knife-blade into engagement therewith, springs to press said rollers toward said block, and a plate of soft metal extending from the base of said block, as shown and set forth.

6. A knife-Sharpener, comprising a plate having a handle thereon, a block of cutting material mounted upon said plate, a guideplate projecting over the sides of said block with means of securing the block in position, a Vconical roller rotatably arranged at each side of said block to direct the knife-blade into engagement therewith, springs to press said rollers toward said block, a soft-metal plate extending from the base of said block, and a pin projecting from the under side of said plate, as shown and selforth.

In testimony whereof l have hereunto affixed my signature in the presence of two subscribing witnesses.

CHARLES F. SHOEMAKER.

Witnesses:

E. G. REYNOLDS, F. B. REYNOLDS.

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