US2325794A - Safety razor - Google Patents

Description

Aus. 3, 1943. J. w. @MEALEY 2,325,794

SAFETY RAZOR Filed Jan. 2. 1940 2 sheets-snm 1 ffy/f Q @Q9 Q Maggi J. w. 4o'lvuaALEY 2,325,794

SAFETY RAZOR Aug. 3, 1943.

Filed Jan. 24, 1940 2 Sheets-Sheet 2 QMM l 2 Invntor .-forneys 'Patented Aug. l3,V 1943 i f UNITED STArES"1-PATENT.:OFFICE: i i '1 ,SAFYMZQR Y John Warren Mealeytoston,Massa,

Application 194e, s eria1`no-lsia12o Claims. torso- 7771) z s This inventionv relates to a VVsafetyfragenthe. general object of the inventionbeing to provide a means of adjusting the guard of said razorin relation to. thecutting -edgeof the bladeV sothat anydegree from a verylight to a very close shave may be obtained while the blade is firmly held at the proper cuttingangle at-.all times. Most razors today are designed to position the bladeat not be suitable-to the beard orskinnconditionof the"head` r'nember,` saldi-earsA beingiprojeotedfin the same planebeyondsaid edgeto'jll'lv blade cornerasa yprotection against being cut from the .side of the'blade corner; i

'Another object of the invention'is toprovideV i a saddle of rubber or the like on thespring plate Y but one cutting angle and that angle mayor may part of the guard member over which saddle the j blade is browned in shaving. position Yby'clamping Pressure from the v.head member. "Ihis'saddleis .formed of .resilient material that'it may functionto remove'm'ost ofthe unpleasant vibration plished by means of a spring-pressed `plateopg erating vertically betweenthe inner lateral sides ofthe guard member which is madewith its middle section channeled to reoeivethisplateas Well as the supporting spring. Theyspring'exf tending the full length of the fplate, operatesbetweenthevunder surface ofthe plateandfthe bottom of the channel. .Theplate may be thus lowered .or raised to. its original position, i;-- `e. flush rwith the .topsides vof the guardchannel, under spring tension,` Y.the contributing factors and results of Whichare hereinafter f ullydescribed. 1

Another object of the invention is to makethe lower lateraledge ofthe clan 1pir 1 g member' or headA curveV upwardly from. the center to the ends, towhich curve the blade will conform vwhen positioned for use. Thiswillresult in presentingmore cutting edge to the faceat one time,

thus reducing thegshaving time and making the blade edgeV conform better to the faeialcontours Italso promotes Aa slicing-action and harshnessof the ordinarymetallicrazor, `erfurther `object of heinventionis to rprovide a cha'nnelor groov .on the 'studs 'and/shank'v at hank 'vhen 'f the; blade 1 is no metal .parts vTvvlfiatever thereby apprei'ably a shoulder on the.studsand. a'projeetingpin on the shank at the" same` lateralfplanejjinj'which shoulders Yand pinxen'gag'e the top'su1 faeef 'of` the lspring nplate simultaneously' for` uthe purpose'of forcingutheplate downward vwhen'clamping press' sion. vof` thel rubber saddle. f

.sure is applied and 1:1reve'nting'-undueico-mpresfkm A mthe'rpbjetofjtne mventis'itepiovme a means for removably'holdingthe rotary lmem-7 ber of the handle withinth'e tubular partofthe handle so that fthe .partsn'ay'be readily 'separ rated or Ahandled asfaf'unit This isv accoma 'secondary guard onVthe-headmember to the.

rear of and alignment withtheibladeedge and theguardbar', s o as to assurerthe proper shaving angle. at. all vtimes Aand to` :raise sa Ifold of skin betweenV itself Vand the guardfbari. 4Tir-1e plishedethrouglifthe useof an internalfthread section inthe collar member ofthe handle shaving angle, in the samef'sense ,used should be interpreted as the angle atwhich: the razor is :held on'. the face of; the user; shown as line head member between the secondary guardand the lateral 'edge of the headmemberto-further promote the' rippleof skinabovereferred to.;-f

Y A`A further lobject of. theinvention is to prQYde n -ea'rs or iiangesjat the ends;of;thelatera1 edgeoi" wm-noiCiteertitel g .Y s l1.Adurther o bjedt ofthe inventinis .to` provide .means --of Y determining andholding 'the cutting I throughwhichan external thread on tliefinner end `of thegrota'ry member may .pass intoa clearance void. i The rotary;y member having j an undercvutlsectionfollowingfthis thrad,vmustjbe ex-` tended' slightly) into-'this voidgbeforelits; internal threadsmay engage thetlireaded shank so itfniay be seen thatupon Vreleasing the shankthe rotary `melrlberis` riding free "the handle 'thoughit Y a series of lettered orfnumb'red recesses on'th'e lower edge o f tjhe fined handle .tubefintq 'which Y acam prfproj'eotion'pn therotating'r tigvhten v `ing handle member may' slide l.and ibe'fheldjsepurely `n place underA .the spring .pressureexerted ,1:fresa 3. A hollow handle 34 s adapted to t inthe outer part of the socket Aanda shank 35 passes through the hollow handle and has -a reduced inner end which is providedvwith a flange 36 at its end which is threaded to engage the threads 32. The outer end of the shank 35 which projects from the hollow hand1e34 is formed'with a knurled enlarged part 31 which has a projection 38 thereon for fitting in any one of ahumber of recesses 39 formed in the outer end of the handle part 34, these Yrecessesbeing numbered or otherwise marked, as kshown in Figure 1, this projection or cam 38 and recesses 39 indicating the diierent cutting angles to which the razor may be adjusted. As will be seen by placing the threaded flange 36 of the shank 35 in the socket 3l until the iiange engages the internalv ange, Y

the lower member (handled as -aunit) is applied y to and positioned with the head by means of said Y studs and shank. The rotor v engages the threaded shank` 2 and the clamping pressure exerted through the rubber saddle 22 crowns the blade, at which point .the stud shoulders and shank pin 'I engage the spring actuated plate I9.

c The spring means beneath this plate i-s sufliciently strong fno-withstand this iirst pressure but as additional force is exerted by the furtherv .turni ing of shank or rotor 35 this spring allowsthe entire head section land the plate to be lowered to the guard bars l2. The degree Vvof lowering governs the cutting angle, a variety of which may be obtained, whilethe blade is always positioned at .the correct shaving angle.' l

' shoulderforming-portion at Ione side edge spaced from the thinedge and forming a secondaryv Y guard which cooperates vwith the vguard bar forV To further describe the action of the vblade curve, it is apparent that a Vstraight lateral edge when heldagainst a convexed surface can only contact so much of this surface no matter atx-what angle it is applied. It must be also apparent that if this lateral edge be curved upwardly from its center to its'ends and then held at 40 degree angle (the usual shaving angle) on the convexed surface, more of the edge is contacting the suri face in proportion to the curve permitted `and if drawn downward on this surface a slicing stroke r from the center toward theends 'of the curved lateral edge isactuated. n

The action and purpose of the secondary guard which is in contact with the skin simultaneously with the guard rod and blade is .three fold, namely; it keeps the razor at the correct shaving, angle at all times; it eliminates th'e'possibility of the blade 'cutting the face of .the user when y undue `pressure is applied or the razor is held at such an acute angle .that the primary guard operation, the surface between; the lastmen -tioned guard member and said Vthin edge being,V

respondingly curved'to align therewith. 2. In a safety razor including `,upper and lower leaves theskin and ceases `to function protectively; it promotes a ripple of skinbetween itself and the guard bar thereby allowing the blade i edge to cut the hair ona convexed surface which results Vin an Vextremely close,

f ast and non-irritating shave.

It is thought from the foregoing descriptionv that the advantage and novel features of the in-V vention willbereadilyapparent. v

. It is Vto be understood that vchanges made in the construction and in the combination i and arrangement of the several ,parts provided that such changes fall within lthe scope ofv the appended claims. w Y i Having described ther invention, what' is claimed` 1. In a safety razor including upper and lower 'fjhead parts` and means for holding a bladebe; .tween the said parts in an upwardly bowed posi-A tion with Vitscutting edge bowed downwardly, a guard bar at one side edge of the lower head partf and spaced therefrom, the adjacent side edge of the upper head part having a thin edge which 1 curves upwardly from its center 1 toward each end; the upr'rervedgeofv the guard Vbar being corhead partsv and means for holding a blade'between said head parts with the blade upwardly bowed and with its Vcutting'edge bowed down- Y wardly, a guard bar at one vsidejedge ofther y lower head part land spaced therefrom, the adjacent side vedge of the upper head -part having la` thin edge which curvesl upwardly from its f Y.;

centertoward each end, the upper edge of the guard bar being'correspondingly curved to align therewith, and the upper head' part having a forming a fOldlof Skin, the hairs' on which are out by the'blade, v v .Y Y .v ,j

` r3. In a safety razor including. upper and lower headparts and means for holding a blade in an upwardly bowed position between the head parts, with .the cutting edge'of the blade bowed 'down- Ward1y,j a primaryu guard bar extendingzalong v .a side edge'of lthe lower head member yand., spaced therefrormthe adjacent edge portion .of Vthe up-Y per head. memberv having afthin edge which curves Vupwardly from its center toward each@VV end withvthe Vsaid bar correspondingly curved to align therewith, ,a secondary guardv at said side ofY kthe upper head member and spaced upwardly f Y and inwardlycfrom'said thin edge,the primary' guard bar. andthe secondary guardfacting-to `form a foldof skin between them, the ,hairs on which are cut by the blade during' the shaving concaved, and flanges at the ends ofthereoncaved part.

f JOHN wAR'REN'omEALEY.

may bf

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