US2252294A

US2252294A - Shearing head for dry shavers

Info

Publication number: US2252294A
Application number: US335675A
Authority: US
Inventors: Ormond Joseph
Original assignee: Schick Inc
Current assignee: Schick Inc
Priority date: 1940-05-17
Filing date: 1940-05-17
Publication date: 1941-08-12
Anticipated expiration: 1958-08-12

Description

12, 1941. J. ORMOND SHEARING HEAD FOR 1512': sHAvERs 'Fiied May 17," 1940 Fla?) FIG. 5

INVENTOR ATTORNEY Patented Aug. 12, 1941 SHEARING HEAD FOR DRY, SHAVERS Joseph Ormond, Newark, N. J., assignor to Schick Incorporated, a corporation of Delaware Application May 17, 1940, Serial No. 335,675

4 Claims.

This invention relates to the construction of the so-called outer or stationary cutter of a dry shaver, the object being to provide a simple and effective cutter while effecting economy in manufacturing costs by the elimination of sundry machining and other operations necessary in the production of such cutters as now generally made; and it consists in a two-part cutter of which both parts are bent up from sheet metal blanks, with provision for convenient and rigid assembly, all as shown in the accompanying illustrations of a preferred form of the invention hereinafter described.

This application is a continuation in part of my application Serial No, 284,624, filed July 15,

Fig. 1 of the accompanying drawing is a perspective View of a completed cutter embodying the invention; Fig. 2 a fragmentary view on an enlarged scale; Fig. 3 a plan of one of the two elements of the cutter; Fig. 4 a plan of the same member with parts bent up ready for assembly; Fig. 5 a perspective view of the other member of the cutter; and Fig. 6 a perspective view of. another shape of cutter embodying the same construction.

In the preferred form illustrated, the cutter includes a sheet metal shoe or base member blanked out in the shape illustrated in Fig. 3, the opposite marginal portions I being bent up to form a channel.

Other portions of the blank are also bent up between and preferably in planes at right angles to the side walls of'the channel for the purpose of locating and providing for the rigid attachment to the base member of the other member of the cutter. Thus, as shown, the base member has bent up end walls 2 forming, with the side walls, a hollow box structure (Fig. 4) and also intermediate bent-up walls 3.

The other element of the outer cutter is likewise of sheet metal and comprises a shear-plate member with bent-up side walls 4 bordering a shear-plate 5 which may be pierced in the blank by a suitable die to form slots 6 or other suitable apertures therein, as desired. Being of sheet metal, the shear-plate member is readily formed in the desired shape, as in the alternative U- shape shown in Fig. 6 or otherwise.

The side Walls of the shear-plate member are so spaced as to fit closely within and abut the inner faces of the side walls of the base member. And certain of the other walls of the base member, preferably the end walls, are of a width to leave slots or spaces 1 between their edges and the side walls of the base, into which slots the side walls of the shear-plate member are set, as indicated. Alternatively, or in addition, the intermediate walls 3 may be similarly spaced from the side walls of the base or may be of a height to clear or just engage the lower edges of the walls 4 when the latter are set in the slots 1, as will be understood.

Two-piece cutters as heretofore known have ordinarily had their elements united by soldering or riveting but according to my invention the trouble and expense incident to such operations are avoided by uniting the elements of the cutter by deforming one or both in such manner as to effect a secure and rigid interlocking of the parts. Being of sheet metal, the elements are readily so united and to this end the shear-plate member side walls 4 are preferably provided with indentations or openings 8 so located as to be adjacent the corners of certain of the bent-up walls of the base member, such as the end walls 2. So arranged, these corners may readily be bent over or swaged into the openings 8, as by inserting a suitable anvil through the interior of the cutter and striking the base to cause the metal to flow into the openings 8. To facilitate this deforming operation the side walls 2 may be initially blanked out in such shape that their corners 9 stand out somewhat, as indicated in Fig. 3. The enlarged fragmentary view, Fig. 2, illustrates the completed interlock.

As so blanked out and assembled, or otherwise within the scope of the appended claims, the cutter will be seen to be simple and inexpensive to make, while being of unusually strong and rigid construction.

The shape of the head illustrated in Fig. 1 will be recognized as being substantially the same as that of a well-known commercial shaver and accordingly adapted to receive the usual reciprocating inner cutter, the indicated openings l0 and II of Fig. 4 serving, respectively, to accommodate inner cutter driving and supporting members, as shown, for example, in Patent No. 2,045,106, dated June 23, 1936.

I claim:

1. A dry shaver cutter comprising a sheet metal base member having side walls bent up to form a channel and also having portions bent up between and in planes substantially at right angles to the channel walls, said portions being of a width to leave slots between their edges and the inner faces of the side walls, and a sheet metal shear-plate member having side walls set in said slots.

2. A dry shaver cutter comprising a sheet metal base member having bent-up side walls and bentup end walls to form a, hollow box structure, the end walls being of a width to leave slots between their edges and the inner faces of the side walls, and a sheet metal shear-plate member having side walls abutting the inner faces of the side walls of the base member and, at their ends, set in said slots.

3. A dry shaver cutter comprising a sheet metal base member having side walls bent up to form a channel and also having portions bent up between and in planes substantially at right angles to the channel walls, said portions being of a width to leave slots between their edges and the inner faces of the side walls, a sheet metal shear-plate member having side walls set in said slots, said shear-plate member side walls having openings for interlocking with adjacent portions of the base member.

4. A dry shaver cutter comprising a sheet metal base member having bent-up side walls and bentup end walls to form a hollow box structure, the end walls being of a width to leave slots between their edges and the inner faces of the side walls, a sheet metal shear-plate member having side walls set in said slots, said last-mentioned walls having openings and the corners of the end walls of the base member being deformed to interlock therewith.

JOSEPH ORMOND.