US2360679A - Razor - Google Patents

Description

Oct. 17, 1944.

N. A. HOLSCLAW RAZOR Filed Nov. 13, 1939 l r 1 l l url l -..11.1.1

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Patentedkoct. 17, 1944 UNITED STATE l RAZOR Neil A. Holsclaw, Chicago, Ill., assgnor of onehalf t Fred E.

Sudlow, Rock Island, Ill.

Application November 13, 1939, Serial No. 304,180

2 Claims.

This invention relates to improvements in shaving or clipping devices ofthe type used without water,'soap or other shaving preparations and commonly known as electric shavers.

The main object of this invention is to improve the efficiency of dry Shavers by increasing their effectivenessby providing means to positively clip the hair closerto the skin. A further object of this invention is to provide in a shaver of this character av plurality of interchangeable and renewable shear heads operated from a common motive device.

Still further objects. of this invention are to provide an electric portable shaver of this character having a plurality of spaced interchangeable and reversible shear heads each having an outer cutter and an inner cutter and a common drive means for all of the inner cutters; to provide arshear cutter of this character having a pair of spaced shafts containing shims or washers between which the individual heads are arranged to be disposed for anchoring the heads to the housing commonly employed in electric shavers; to provide a common drive means for said individual heads; to provide a plurality of spaced heads in a device of this character Wherein one or more of said heads is provided with angularly disposed cutter bars; and to provide a device of this character which is very simple in construction and operation and economical to manufacture.

An illustrative embodiment of this invention is shown in the accompanying drawing, in which:

Figure l is a perspective view of an electric shaver made in accordance with this invention, the handle or casing thereof being partly broken away.

Fig. 2 is a top plan view thereof.

Fig. 3 is a cross'sectional view taken on the line 3-3 of Fig. 2.

vFig. 4 is a cross sectional view taken on the line 4-4 of Fig. 3.

Figs. 5 and 6 are plan views of two alternative shear heads before folding.

Fig. '7 is a perspective view of the upper end of the housing with the shearing heads removed.

Referring in detail to the drawing, the housing I forms a handle for holding and manipulating the device and contains a motor vibrator or the like, not shown, having a reciprocating power transmitting shaft 2 extending through said housing at one end thereof. This end of the housing I is cut away as at 3 in the usual manner. This end of the housing is also drilled self when folded, the face bearing and bored asl at 4 and 5 for the reception respectively of the head 6 of the square shanked arcuate shaped bolt 'I and the internally threaded cap 8. Interspersed between the side walls 9 and I0 of the cut away portion 3 and loosely positioned on the shank of bolt 1 are a series of ordinary shims or washers II and afpair of wedge shaped shims or washers I2 and I2'. Two bolts 1 and I are employed in this embodiment; and inasmuch as they are identical in every respect reference to one is intended to include reference to both; and the purpose thereof will be hereinafter described.

The outer stationary cutters I4, I5 and I5 are formed by folding the blank I1 (see Figs. 5 and 6) along the dotted lines I8 after the perforatory slots I9 and 20 have been stamped or punched out. It is to be noted that the material remaining between the slots I9 forms cutter bars 2| in the medial portion of said blank which is in itpart of the The material remaining between the slots I9 in the side walls (after folding) forms guideV bars to facilitatel entry of the hair to be clipped into the slots I9 of the face bearing part. The slots I9 in the face bearing part and the cutter bars 2l are disposed at an angle to the longitudinal axis of the face bearing part.

After the blanks I1 shown in Figs. 5 and 6 are folded to make the cutters I4, I5 and I6, they are placed in the cutaway portion 3 shown especially in Figs. 1 and 3 so that the perforatory slots 20 extend over, and envelope on three sides, the shanks of bolts 'I and 'l'. The washers or shims II space the cutters I4, I5 and IE away from each other and the wedge shaped washers I2 and I2 position the cutters I4, I5 and I6 in such a manner that the face bearing portions thereof form an arc (see Fig. 3). Lock nuts 'I3 are threaded on the bolts 1 and 'I' andare provided with the usual fins I3. By tightening the caps 8 the cutters I4, I5 and I6 are held securely in position under the tensioning action of fins I3' of the lock nut I3.-

The inner or movable cutters 22, 23, 24 are T- shaped in cross section and each comprises a shank 25 and an upper bearing part made up of a series of transversely positioned cutaway portions 26 and shear bars 2,1.

Each movable cutter (22, 23 and 24) is provided with downwardly a projecting shaft 28 integrally secured medially to the shank of the cutter. The free ends of the shafts 28 are arranged to seat in the transversely extending cutters I4, I5 or I5.

trough 29. The trough 29 is provided with an integrally secured medially positioned downward hub 30 which on its lower end is provided with a square socket 3I to receive the square end 32 of the power shaft 2.

Springs 33 one for each inner cutter are secured to the edges of the trough 29 in any suitable manner such as by providing downwardly eX- tending flanges 34 and perforated at 35 to t around the corresponding shaft 28. The free ends -of the springs 33 are provided with upwardly turned iianges 36 to form a seat for the shank 25 of the cutters (22, 23 and 24). The object of the springs is to maintain the bearing faces of the cutters 22, 23 and 24 against the under side of the face bearing parts of the stationary heads I4, I5 and I6 respectively.

It will now be readily seen that when power is transmitted to shaft 2 it in turn transmits it to the cutters 22, 23 and 24 through trough 29.

It should also be readily understood that the heads I4, I5 and I6 are interchangeable and reversible to effect different kinds of shearing effects on the surface operated upon. It is also to be understood that although the face bearing portions of the cutters shown in Figs. 1 and 2 illustrate diagonally positioned vcutter bars 2l and slots I9, the slots and bars may be transverse to the longitudinal axis ofthe cutter head as illustrated in Fig. 6 or may be of any other shape and design,

It is to be understood that some of the details set forth m-ay be altered or omitted without departing from the spirit of this invention as defined by the following claims.

I claim:

1. In a razor a series of flattish slide bars arranged in parallel each having transverse cutters on one edge thereof, each bar being distinct and each having a supporting stud set generally coplanar therewith and perpendicular on its edge opposite from its said cutters, a bridge whereon said bars are removably set transversely by means of the studs respectively, and means for operating through said bridge to reciprocate said bars,

2. In a multiple cutting unit razor head, comprising stationary and movably oblong cutters organized and disposed in parallel relation, a transversely disposed actuating bar to which the movable cutters are actually connected, and means to oscillate said bar sidewise, oblong springs to urge said movable cutters against said stationary cutters respectively, said bar having a slot disposed lengthwise thereof, and said movable cutters for purpose of motivation each having a part projecting crosswise therefrom and into said sl-ot for operative engagement, each of said springs bearing medially on said bar and termi'- nately on the opposite endward parts of one of said movable cutters.

NEIL A. HOLSCLAW.

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