US2270970A - Fur cutting knife - Google Patents

Description

Jan. 27, 1942. 5, s c E 2,270,970

FUR CUTTING KNIFE Filed April 4, 1939 Patented Jan. 27, 1942 UNITED STTES PATENT OFFICE run CUTTING KNIFE Abraham S. Schaftel, Worcester, Mass.

Application April 4, 1939, Serial No. 265,894

1 Claim.

The present invention relates to a fur cutting knife of the type providing a handle or bladeholder, from which the blade is detachable for purposes of replacement.

In prior devices of this type, it has been necessary, for satisfactory sharpening of a blade on a honing stone or the like, to remove the blade from the holder or handle, because of said handles obstruction to the desired flatwise presentation of such blade to the sharpening stone. The principal object of my invention is to provide a knife construction which overcomes this difiiculty and permits the blade to be sharpened without removing it from its handle or holder. Also, according to my invention, the cutting edge of the blade provides points at opposite ends, and the attachment of said blades to the holder permits reversal of the blade therein, this enabling either one of said points to be disposed in operative position. Other and further objects and advantages of my invention will more fully appear from the following detailed description thereof, reference in this connection being had to the accompanying drawing, in which- Fig. 1 is a view in side elevation of my improved fur cutting knife.

Fig. 2 is a similar view of the detachable blade of said knife.

Fig. 3 is an edge view of said knife, and

Fig. 4 is a fragmentary sectional view on the line 44 of Fig. 1.

Likereference characters refer to like parts in the different figures.

As shown in the drawing, the handle or blade holder of my improved knife comprises a pair of flat elongated matching members I, I, preferably of sheet metal, which are held in face-to-face relation by any suitable fastening means, such as a rivet 2. Preferably, the fastening means 2 is near one end of the handle, thus permitting the members I, I' at their edge portions most remote from said fastening means to be sprung apart for the insertion between them of the knife blade. Said blade, as shown at 3, is substantially triangular in form, resenting a relatively long cutting edge 4, and two shorter edges 5, 5; along each of the latter are provided a, plurality of apertures 6, 6, for registration with similarlyarranged blade-retaining pins I, I carried by the edge 8 of handle member I; the other handle member I' on its corresponding edge has holes that register with said pins I, I.

The blade 3 is engaged with the handle or holder by inserting either of said blades shorter edges 5 between the handle member edges 8, 8, to impale the blade apertures 6, 6 on the pins I, I; thereupon a latching member 9, pivoted at In on one of the handle members, is swung down from the broken line position to the full line position shown in Fig. 1, to press together the free edges of the handle members, and to clamp the blade 3 between them. By providing the blade with two gripping edges 5, 5, said blade may be reversed in the handle, to present selectively either end of the cutting edge 4 as the cutting point of said blade.

It will be noted that the gripping edges 8, 8 of the handle members I, I are at a pronounced angle to the lengthwise direction of the knife assembly, and that said edges8, 8 engage the blade 3 only along a narrow zone of the apertured edge 5. In other words, the shape of the handle is such that with the blade 3 inserted and held therein, nearly the entire total area of 'said blade is exposed and uncovered beyond the bladeholding pins I, I; because of this arrangement, which leaves the blade 3 for almost'its entire length uncovered by the handle, it is possible with my device to sharpen said blade without removing it from the. handle. .This blade-sharpening, which requires flatwise drawing of the blade across a honing stone or the like, would be impeded and prevented by the thickness of the handle, if the latter, as in prior similar knife constructions, had any appreciable extension lengthwise of the blade.

I claim:

In a fur cutting knife, a blade having a relatively elongated cutting edge and .a shorter apertured edge at an acute angle to said cutting edge, and a handle comprising matching. members between which said blade is received and held, the overlap of said -members with said blade being confined to a narrow strip or zone along said apertured blade edge, by handle member edges which make substantially the complement of said acute angle'with the line of lengthwise direction of said knife, whereby to permit sharpening of said blade without removing it from said handle.

ABRAHAM s. SCI-IAF'IEL.

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