US2438681A

US2438681A - Knife sharpener

Info

Publication number: US2438681A
Application number: US772832A
Authority: US
Inventors: Jay R Reese
Original assignee: Individual
Current assignee: Individual
Priority date: 1947-09-08
Filing date: 1947-09-08
Publication date: 1948-03-30
Anticipated expiration: 1965-03-30

Description

March 30, 1948. J. R. REESE KNIFE SHARPENER Filed Sept. 8, 1947 INVENTOR ATTORNEYS- v Patented Mar. 30, 1948 UNITED STATES PATENT OFFICE KNIFE SHARPENER Jay R. Reese, Hamburg, Iewa Application September 8, 1947, Serial No. 772,832

4 Claims. 1

This invention relates to knife sharpeners designed more particularly for kitchen use, the primary object of the invention being to provide a sharpener including a holder and a sharpening disc held within the holder in such a way that knife blades drawn through slots formed in the holder, will be sharpened by their contact with the edge of the sharpening disc.

An important object of the invention is to pro vide a sharpener of this character wherein the sharpening disc is held in position by means of a frictionblock constructed preferably of rubber, the block being wedged between the wall of the holder and the sharpening disc, in such a way that the block may be readily removed and the disc rotated to change the location of the worn edge of the sharpening disc, to bring an unused edge or portion of the sharpening disc, before the knife guide grooves of the body portion.

With the foregoing and other objects in View which will appear as the description proceeds, the invention consists of certain'novel details of construction and combinations of parts, hereinafter more fully described and pointed out in the claims, it being understood that changes may be made in the construction and arrangement of parts without departing from the spirit of the invention as claimed.

Referring to the drawing Figure 1 is an elevational view of a knife sharpener constructed in accordance with the invention.

Figure 2 is a plan view thereof.

Figure 3 is a vertical sectional view through the sharpener.

Figure 4 is a sectional view taken at right angles to Figure 3.

Figure 5 is a transverse sectional view taken on line 5-5 of Figure 4.

Referring to the drawing in detail, the sharpener comprises a substantially hollow frusto-conical cone-shaped body portion 5 which is provided with ears 6 by means of which the body portion may be secured to a supporting surface.

Formed within the body portion is a rib I that extends across the body portion, the rib being provided with the slot 8 for the reception of the sharpening disc 9 constructed preferably of steel.

The rib i is formed with a cut-out portion I disposed substantially centrally thereof, the cutout portion It being of a width to accommodate the friction block II which is formed with a cutout portion formed in one edge thereof to fit over the inner edge of the sharpening disc 9, the cutout portion presenting a shoulder l2 engaging over the edge of the sharpening disc to prevent the sharpening disc from being forced from its position within the slot 8.

The friction block I l is of a width to be wedged between the wall of the body portion 5 and disc 9, frictionally holding the disc 9 in position within the slot 8. Formed in the body portion 5 and extending inwardly from the outer end thereof, are slots I3 which extend to points adjacent to the edge of the sharpening disc 9, as clearly shown by Figure 4 of the drawing. These slots are disposed at oblique angles with respect to the sharpening edge of the disc 9 and provide guides for the knife which is being sharpened, and which is drawn through the guide slot at one side of the body portion and then drawn through the other slot during the sharpening operation, the guides acting to hold the knife blade in its proper position with respect to the sharpening edge of the disc to insure a true sharpening operation.

When the sharpening portions of the disc 9 become so worn that they will no longer accomplish the sharpening result, it is only necessary to remove the friction block and rotate the dis-c slightly, bringing unused sections of the disc within the slots l3 for contact with the blade being sharpened.

From the foregoing, it will be seen that due to the construction shown and described, it is only necessary to draw the knife blade to be sharpened, through the slots [3 in contact with the sharpening disc 9, whereupon the edge of the blade will be sharpened by contact with the disc 9.

In view of the foregoing description, it is thought that further description as to the operation of the sharpener is not necessary.

What is claimed is:

1. A knife sharpener comprising a hollow body member, a rib dividing one end of the body member, said ri'b having a, slot, 2. sharpening disc removably held within the slot, a friction block wedged between the wall of the body member and disc holding the disc within the slot, said body member having guide slots extending inwardly from one end thereof intersecting the slot in portion, a friction wedge block disposed between the wall of the body member and extended into the cut-out portion, engaging the sharpening disc, removably holding the sharpening disc within its slot, and said body portion having guide slots intersecting the slot in which the sharpening disc is positioned, whereby a knife drawn through the guide slots, will be sharpened by contactwith the sharpening disc. I

3. A knife sharpener comprising a hollow body member, a rib dividing one end of the body member, said rib having a slot, a sharpening disc removably held within the slot, a friction block constructed of rubber material, wedged between the wall of the body member and disc, holding the disc within the slot, and said body portion 15 sharpening disc 4 having guide slots extending from one end thereof intersecting the slot in which the sharpener disc is positioned and through which knives are drawn in contact with the sharpening disc, in sharpening the cutting edges of the knives.

4. A knife sharpener comprising a hollow body, a rib extended across the interior of the body, said rib having a slot extending longitudinally thereof, a sharpening disc removably held withing the slot, said body having knife guide slots extending inwardly from one end thereof and in-.- tersecting the slot of the rib whereby portions of the sharpening disc are exposed within the guide slots, and means for lremovably holding the within the slot.

JAY R. REESE.