US2292438A

US2292438A - Electric dry shaver

Info

Publication number: US2292438A
Application number: US214896A
Authority: US
Inventors: George G Going
Original assignee: Remington Rand Inc
Current assignee: Remington Rand Inc
Priority date: 1938-06-21
Filing date: 1938-06-21
Publication date: 1942-08-11
Anticipated expiration: 1959-08-11

Description

Aug. 11, 1942. "Ga ma 2,292,43

ELECTRIC DRY SHfWER 4 Filed June 21; 1938 2 Sheets-Sheet 2 FIG.7.

INVENTOR GEORGE G.GO|NG;

BY ygzJ wk ATTO R N EY Patented Aug.1l-, 1942 A i v 'I g v 2,292,438

UNITED STATES I PATENT OFFICE C I 'nnac'rarc may snsvaa as". -G. Goin;. Stamford, Com, ml, by mesne assignments, to Remington Rand. Ina, Buflalo, N. Y, a corporation or Application .run zi; 1938, Serial No. 214,896

5c1aiins.](ol.ao -43)" This invention relates to improvements in elec- Like characters of references refer to like parts Y tric razors, and particularly to a novel combinain all the drawings.

tion of; shearing members therein aflording The new shearing head and its associated drivmeans for adequately cutting both long and ing mechanism is adapted to be incorporated in short hairs. 5 any well known type of electric razor in which Razors which are adapted to out both long and the inner cutter is reciprocated. A .ra'zor of short hair are well known in the art, but it has this type comprises a motorcasing ll which conbeen the practice to provide one set of shearing stitutes the handle of the razor, and in which members for both operations. -It isvobvious that. may be mounted any suitable type of motor in shaving it is necessaryto have "a thin outer ith r of the vibrator or rotating ype.

I shear plate or cutter which will permit the hair ,The shearing head H is located in a longitudito be cut close to the skin, whereas in cutting 118-! slot in the D he casing d secured long hair such a thin outer shear plate is not t e o y a et Screw 88 own in Fig. 4. necessary. In cutting long hair it is necessary Th Shearing h l mp i a fixed Outer shear to provide someform of combing medium having 15 Pl 91 Shearmember ll w h is Substantially teeth by which the hair may be aligned with the rectangul n p having the upp Surface shearing members. It has'alsc been found that ground to an arcuate smi One side of shear an inner cutter which-is satisfactory for shaving mem er or plate 14 is formed with'a flange II is often unsatisfactory for cutting long hair. and having Slo s out herein to form cutter bars and vice ve e, comb teeth I. The upper surface of the shear It'is, therefore, the principal object of this inplate is provided with perforations Il forming vention to provide a shearing head for razors or v shearing edges. 1

this'type, having separate inner cutters coopera- 'I 'he inner cutter 20 (Figs-*7 and 8) is cylining with a specially designed stationary shear ri in p having an eccentricbore, and plate for cutting long and'short hair, respeecut in the thinner Portion of the cutteris a P t l rality of slots located at an angle to thelongi- Another object is to provide separate and distudinal'flxis 0f bore, These slots extend into tinct cutters in the shearing head for cuttin the bore and form cutter bars 2!. A slot 22 is long and short hairs respectively. formed in the inner cutter diametrically opposite A still further object is. to provide an auxiliary v to the bars 2i which is adapted to be engaged cutting member which is adapted to cut long by an arm 23 pivotally mounted on stud :4, and hair, andwhichis driven from the same source reciprocated by the motor. The stud 2|v is as the cutter for short hair. screwed into a bushing 21 secured in-the casing A more clear conception of the construction, "I by any well known means. operation, and further objects of the invention Located in the casing is a plate 25 in which is may be had from the following detail description positioned a pair of spring pressed pins 26 which when taken in conjunction with the accompany.- cooperate with the underside of the inner cuttter, ing drawings,' in whichthereby insuring. close contact between the cut- Flg. 1:1s a side elevational view of an embodi ter bars 2i, and the perforations II in the outer mentof the invention with parts broken away to 40 cutter. show the operating mechanism; i .The perforated portion. of the shear plate when Fig. 2 is a plan view of Fig. 1 with parts moved over the face will pi p the h r which broken away to showthe inner cutter; enters the perforations 11 where it is cut by the Fig. 3 is a plan view of the auxiliary inner action of the bars 2| cooperating with the edges tt for cutting long hair; 46 of the perforations. Since the metal of the shear Fig. 4 is a cross section taken substantially plate is very thin, the hair will be cut close to the along line M of Fig. 1;' v 1 kin.

Fig. 5 is a cross'sectionalview of Fig. 1 taken The bars It in the flange I! (Fig. 4) referredto substantially along line i-J thereof; 1

Fig. 6 isa detail transverse'section showing the operating therewith is an .auxiliary cutter 30.

\ drivingconnection for the auxiliary inner cutter; The cutter is substantially channel shaped. and is Fig. I is a plan'view of the inner cutter for positioned with. the web portion against the side cutting short hair; of the shear plate and the shorter of its flanges Fig. 8 is a front elevational view of the cutengaged with the underside of flange II. The

abov are provided for cutting long hair, and co ter shown inFig. 7-. I as shorter flange a slotted to form .cutter bars 3|.

fcutter bars'3l and I6.

' The angular relation II t a ter projections l to the side wall of the shaver 'head is inclined at an acute angle to provide a 'a' retaining groove for the auxiliary cutter. :With

l the cooperationv obtained from the, resilient lmeans engaging the auxiliary cutter, it is-held in proper operative position for cutting. coop- Letters Patent is? be reciprocated by the inner cutter 20, or by a number of independent means, several types of which will be described hereinafter. The under surface of flange l6 and the upper face of cutter 30 are formed at an angle of approximately to the horizontal. This angular contact prevents the blade 30 from slipping while running. a

In Figs. 1, 2,4, and 5 the cutter '30 is disclosed as being driven by the inner cutter. The shear plate ll has a slot 32 cut therein, through which extends a pin 33 riveted in the web of the cutter 30. The pin 33 is adapted to cooperate with an aperture 34 in the inner cutter in such a out of position manner that any lateral movement of the inner cu -ter will be transmitted to the auxiliary cutter 30. i

Positioned in the plate is a spring pressed pin 35, which has a 'reduced head adapted to enter a'hole in the lower flange of theauxiliary cutter.- The pin 35 forces the cutter upward I against the under surface of the flange ii, there- ;by insuring the close cooperation; of cutting mempi berslfi and 3|. 4

When the cutter bars l6 are tween :the bars and there cut by the action of of the under faces of cuteration with projections IS in cutting long hair without requiring the provision of other :guide means or retaining means to maintainthe auxiliary cutter in operative relation with projections l5. 1

It will also be clear that in using the shaver the surface of theshaver head, formedzwith projections l5 and perforations H, can be'applied to the face or other surface to be shaved, so that when the shaver is moved-in a direction parallel to the'plane of projections I5 and'with'the free ends of projections 15 leading in the direction of movement of the shaver overthe face or other surface, long hairs will be cut first between projections l5 and short hairs will be subsequently and simultaneously cut in-perforations I'L'. When t it isdesired'to shave only short hair,. the shaver may be used in such a way that onlythe'portion I which are adapted to cooperate with bars ii for cutting long hair. The auxiliary cutter 30 may around the inner edges of saidxperforations, an inner cutter mounted to have cutting" edges formed thereon engage the inner surface of said shaving section for cutting cooperation with the cutting edges thereof in the movement of said inner cutter over the inner surface of said shaving section, a plurality of projections extending laterally in spaced parallel relation from one side of said shear member, having the opposite ends free and forming :open endedslots therebetween, said projections lying inj the same plane and having coplanar faces on the side facing said base extending .in inclined relation to the plane of the adjacent side wall of said shear member and toward said base to form a retaining groove with said side wall, and an auxiliary cutter guided in said groove by said projections and side wall having apair of adjacent sides slidably engaged in said .retaining groove in sliding contact with said, coplanarfaces and said side wall and having the portion engaging said cutter projections formed to provide a plurality of spaced parallel cutter bars formed for. cutting cooperation with said projections in ,the reciprocation of said moved across skinv containing long hairs, the hair is combed in be auxiliary cutter; and simultaneous cooperative shaving operation with said shaving section and inner cutter.

2. A shaver, comp I I g a shear. member'hav- I ing a base and a curved shaving section vof substantially thin cross section attached at o posite sides to the sides of said basefsaid shaving section having a plurality of perforations to provide a plurality of cuttingfedges on said sectionabout the margins of said perforations, an inner .cut-. tenmounted in said shear member andhaving cuttinggeclges cooperating with thecutting edges ofsaid .shavin'g- 'section in the movement .ofsaid inner. cutter over the inner .surface of said shearmember, a plurality of spaced parallel projections :40

mounted at one end on one side of" said shear member atone end of said shaving section, said projections extending laterally from the side .of

said shear member'and providing open ended slots therebetween with the ,side edges of said' projections forming cutting edges extending laterally from said shear memben'and an auxiliary cutter having a plurality of spaced parallelproiections formed. to,.-provide, cutting edges on the "sides thereof extending laterally fromthe side of said shear member, havingopen ended slots therebetween and having I cutting cooperation with provided with perforations I7 is engaged with the, 1

surface to be shaved. The side portion'of the shaver under projections I5 is entirely open for a substantial distance to allow the projections be freely and easily engaged with long hair.

This enables the shaver to be used for trimming mustaches, sideburns, the back of the neck, etc.,

with the side projections l5.

What I claim asnew, and desire secure by 1, A shaver, comprising a shear member hav- Y said first-mentioned projections in relative movement thereof, whereby movement of said shaver over thesurface to be shaved with the freeends of said projections in the leadand with the direction, of movement in line with said pn oj ecizions,

, said projections will cooperate to receive and cut 1 cross section 'joinedat opposite sides to the sldes ing a base and an outwardly directed curved shaving section said shaving section having outer and inner partially cylindrical surfaces providing said section with a substantially thin cross section attached at both sides to the remainder of said shear member including said base, said long hair therebetween andsaid shaving section will have the inner cutter cooperate simultaneously with the cutting edges about sa'id perforations therein for cutting short hair.

3. A'shaver comprising shear member having a curved shaving sectlon of substantially thin of the vbase of saidinember and formed'wlth a plurality of perforations; to. provide a. plurality of cutting edges on said, section about the margins of said perforationa, an inner cutter mounted to have cutting edges formed-thereonsection having a plurality of perforations ex-'- .tending between said inner and outer surfaces,

cutting edges being formed on said section engage the inner surface of, said shaving section for cutting; cooperation with ,the cutting edges thereof in the movement of saidinner cut- -ter overthe inner; surface of said shaving section,

a plurality of projections extending laterally in spacedparallel relation fromfoneslde of said shear member adjacent said base and cooperating therewith to form a retaining groove, said projections having slots therebetween open at the a free ends thereof, an auxiliary cutter formed to provide a pair of adjacent sides slidably engaging said projections and the adjacent side wall of said shear member respectively, said auxiliary cutter seating in said retaining groove and having the portion'engaging said projections formed with a plurality of spaced parallel teeth having cutting cooperation with said projectionsin the movement of said auxiliary cutter relative to said projections, resilient means normally operating to project said auxiliary cutter toward said projections for cooperation therewithin retaining said auxiliary cutter in said retaining groove and guiding the same in its cutting operation, and means for actuating said inner and auxiliary cutters simultaneously.

4. A shaver comprising a shear member having a curved shaving section of substantially thin cross section joined at opposite sides to the sides of the base of said member and formed with a plurality of perforations to provide a plurality of cutting edges on said section about the margin of said perforations, an inner cutter mounted to have cutting edges formed thereon engage the inner surface of said shaving section for cutting cooperation with the cutting edges thereof in the movement of said inner cutter over the inner surface of said shaving section, a plurality of projections extending laterally in spaced parallel relation from one side of said shear member having the opposite ends free and forming open ended slots therebetween, said projections lying in the same plane and the plane of said projections extending ininclined relation toward said base to the plane of the adjacent side wall of said shear member to form a retaining groove, an

' auxiliary cutter formed of an angle member having one portion slidably engagingv the sidewall of said shear member and the other portion extending in inclined acute angular relation to the free edge of the first portion and slidably engaging said projections in said retaining groove, said last-mentioned portion being formed to provide a plurality of spaced parallel projections parallel to said first-mentioned projections formed for cutting cooperaton with said firstmentioned projections in the reciprocation of said angle member in said. retaining groove,

resilient means for retaining said angle member in said retaining groove, said resilient means and first-mentioned projections cooperating to normally retain said auxiliary cutter against detachment from said projections and shear member, and means for actuating said inner and auxiliary cutters simultaneously.

5. A shaver comprising a shear member having a base and a. curvedshaving section extending outwardly from saidbase and formed with a plurality of perforations to provide a plurality of cutting edges on said section about the margins of said perforations, an inner cutter mounted to have cutting edges formed thereon engage the inner surface of said shaving section for cutting cooperation with the cutting edges thereof in the movement of said inner cutter over the inner surface of said shaving section, a plurality of pro jections extending laterally in spaced parallel relation from one side of said shear member, having the opposite ends free and forming open ended slots therebetween, saidprojections lying in the same plane and extending toward said base-in inclined relation to the plane of the adjacent side wall of said shear member to form a retaining groove, an auxiliary cutter guided in said groove by said projections and having the portion engaging said projections formed to provide a plurality of spaced parallel cutter bars formed for cutting cooperation with said projections in the reciprocation of said auxiliary cutter, and means foractuating said inner and auxiliary cutters simultaneously having a lever engaging said auxiliary cutter operable to transmit reciprocating motion thereto to produce the cutting operation of said auxiliary cutter and resilient means mounted thereon and engaging said auxiliary cutter i'or normally retaining said auxiliary cutter in operative cutting relation in said retaining groove against detachment.

' GEORGE G. GOING.