US2397875A - Knife - Google Patents

Description

April 2, 1946.

A. 'J. MARSHAUS KNIFE Filed Oct. 6, 1944 2 Sheets-Sheet 1 Inventor 0%ad064'm.

A Attorneys April 2, 1946.

A. J. ,MARSHAUS KNIFE Filed Oct. 6, 1944 2 SheetS-Sheet 2 Patented Apr. 2, 1946 srArEs caries KNIFE i mherst. e ssediapnm Application-October 6, 1944, Serial No. 557,523

(Cl. ac -3,014.).

2 Claims.

My inventionrelatesto; improvements in knives for, use infilletinglflslr, and similanoperations, pr mary. objectiniviewabeingpto: providea simply constructed knife adapted {of easily and quickly, filleting. fish. of. different sizes with a minimum of time and labor and waste of flesh, and which is inexpensive to manufacture.

To the accomplishment of the above, and sub-- ordinate objects presently appearing, a preferred embodiment of my invention has been illustrated in the accompanying drawings, set forth in detail in the succeeding description, and defined in the claims appended hereto.

In said drawings:

Figure 1 is a view in perspective of my improved knife in a preferred embodiment thereof,

Figure 2 is a view in rear elevation of one of the knife sections detached from the other,

Figure 3 is a similar view ofthe other knife section,

Figure 4 is a view in longitudinal section taken on the line 44 of Figure 3,

Figure 5 is a view in edge elevation of the knife with the sections attached,

Figure 6 is a fragmentary view in rear elevation of the rear end of the handle of the section shown in'Figure 2 and drawn to an enlarged scale,

Figure 7 is a view in transverse section taken on the line |'l of Figure 1 and drawn to an enlarged scale,

Figure 8 is a detail view in longitudinal section taken on the line 8-8 of Figure 2 and drawn to an enlarged scale.

Referring to the drawings by numerals, my improved knife, as shown, comprises a pair of straight handled, straight-bladed knife sections I, 2 each, as will presently more clearly appear, forming a complete knife.

The section designated l comprises an elongated rectangular handle 3 of channel form having a front wall 4, side edge walls 5, an open front end 6, and a rear end wall 1. The blade 8 extends from the front wall 4, and the open end of the handle 3, in the plane of said wall and is formed with a complete front cutting edge 9 and a shorter rear cutting edge I0. A loop-like combined guard and finger grip l I extends across the front side of the blade 8. A pair of lateral, inturned fingers 12 are provided on the corners of the side edge walls 5 at the open end 6 of the handle 3. A pair of longitudinally extending prongs l3 extend inwardly of the handle from the edge of the rear end wall 1 adjacent said sidewalls 5 and parallel with the latter. A substantially trian-gular, split leaf spring-14 is fixed by a rivet L5 to the: outer faee' of i the rear end wall 1 and extended throughsl'ots l fi insaid: end-wall 1 adjacent the side walls 5 to provi-de free--ends l1 within the handle- 31*reacti ng forwardly of said handle. The purpose of the fingers I2, prongs l3 and the spring M will presently be explained.

The handle l8 of the knife section 2 is similar to the handle 3 but slightly shorter and hollow. The blade l9 extends from the front end of the handle l8 coplanar with the front wall 20 of said section 2. A combined guard and finger grip 2| similar to the combined guard and finger grip H is provided on the knife section 2. The handle I8 is of the proper width to fit in the handle 3 and is provided at the front end thereof with pairs of opposed notches 22 in the front ends of the side walls, the pairs being spaced equidistantly in different planes. Pairs of opposed slots 23 are provided in the rear end wall 24 of the handle I8 adjacent the side walls, the pairs of slots 23 being spaced apart in the same manner as the pairs of notches 22.

As best shown in Figure 7, the handle l8 of the knife section 2 fits in the handle 3 of the knife section I with a selected pair of slots 23 fitted over the pair of prongs l3 and a pair of the notches 22 lying in the same plane as the pair of slots 23 straddling the pair of fingers [2, the free ends ll of the spring l4 bearing against the rear end wall 24 of the handle l8 and yieldingly maintaining the pair of notches 22 and the pair of fingers l 2 in the described relation. As will be readily seen, the handles 3 and I8 may be spaced apart in interlocking relation, to variably space the blades 8 and 19 in parallel relation, by selecting different pairs of slots 23 for interlocking with the pair of prongs I3 and the appropriate pair of notches 22 for straddling the fingers l2. By slight movement. of the handle l8 rearwardly of the handle 3, the notches 22 may be freed from the pair of fingers I2 and the handle l8 may then be tilted outwardly of the handle 3 and manipulated forwardly of the handle 3 to disengage the slots 23 from the prongs l3. Thus, the handles 3 and I8 may be detached for attachment, in the manner already described, to vary the spacing between the blades 8 and I9.

In using the described knife in a filleting opera- 2 point the knife is shoved through the fish until scope of the appended claims.

cutting a fillet from each side of the backbone to the tail. After this operation, the knife section 2 may be detached and the blade I9 used to trim the fillet from the rib bones on both sides of the fish leaving all the bones and the fins on the carcass of the fish, removing only the flesh.

The combined guards ll, 2| serve to prevent the hand from, slipping iorwardly onto the blades 8, I9 and also as finger grips for use in detaching and attaching the knife sections. The cutting 1 edges on the knife sections l, 2 are formed by beveling the outer sides of said sections only.

The foregoing will, it is believed, suffice to impart a clear understanding of my invention Without further explanation.

sections each comprising a handle and a blade extending from one end of the same, one of the handles being of channel form and the other handle fitting therein, and means to detachably attach said handles together comprising a pair of fingers in one end of the channel form handle, and notches in the corresponding end of the other handle for straddling said fingers, and spring means acting to maintain the notches in such straddling relation. V

2. In a knife for filleting fish, a pair of knife sections each comprising a handle and a blade extending from one end of the same, one of the handles being of channel form and the other handle fitting therein, and means to detachably attach said handles together comprising a pair Manifestly, the invention, as described, is susceptible of modification Without departing from the inventive concept, and right is herein rethe served to such modifications as fall Within WhatIclaim is: i l; In a knife for filleting fish, a pair, of knife of fingers in one end of the channel form handle, and notches in the corresponding end of the'other handle for straddling said fingers, spring means,

acting to maintain the notches in such straddling relation, slots in the other end of said other handle, and prongs in the other end of the channel form handle extended through said slots.

. ANTHONY J. MARSHAUS.

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