US2352112A

US2352112A - Magazine safety razor

Info

Publication number: US2352112A
Application number: US352388A
Authority: US
Inventors: Muros Joseph
Original assignee: Gillette Safety Razor Co
Current assignee: Gillette Co LLC
Priority date: 1940-08-13
Filing date: 1940-08-13
Publication date: 1944-06-20
Anticipated expiration: 1961-06-20

Description

June 20, 1944.

.1. MUROS 2,352,112

` MAGAZINE SAFETY RAZOR Filed Aug.` 13, 1940 2 Sheets-Sheet l I N VENT OR.

June 2o, 1944. .LMUROS Y 2,352,112

MAGAZ INE SAFETY RAZORl Filed Aug. 13,A 1940 2 sheets-shea 2 Patented VJune 20, 1944 UNITED STATES ori-fles 2,352,1i2. 'v l MAGAZINE sAFETYL-mzon J osephMuros, Cambridge, Massl.,las'si`glnonto.Gil-. lette Safety Razor Company, .Boston,f.M-ass. a corporation of'Delaware y Application .August `13, 1940;;iSerialN0-.i35288 i 6`Claims. 'This inventionrelates primarily, to, safety razors of'. thej type organized tol receive fresh sharp blades one by one. asdelivered from. a. magazine source of supply., although certainy of itsfeatures may be usefully applied to safety razorsin which theblades-*are supplied by. hand. Inoneaspectr the inventionrconsistsin anovel combination of safety. razor. and` magazine. in whichvthetvv/orarev` so organized that. the razor receivesbladessubstantially. in shaving position directly by` endwise` movement from the maga.- zine in asingle, continuous step.V -In another. as-` pectthe invention consists in a novel. safety. razor compact in` design, convenientaand. efficient; in useA and. adapted for. vstrapping.; while the blade. remains in. the blade holder. i

The extreme thinnessof safety. razor blades andthe fragile character; of. their shaving; edges renders these blades diicultito handleand to locate inta safety razorreadyfor.. shaving without danger of cutting the user or ofM impairing, the keen edge of .the blade by. contact .with the razor ortheblade packing, Asherein .shown .themagazine .of my invention is shapedto contain eight or, ten blades in, a. stack, 4`maintainingtheirgcut; ting edges.. out of contact vwith,allpartsgofthe magazine. andsubstantially. protecting the blades from exposure. The razononits part is` equipped With a blade holderv designedte receive a blade directly from .themagazirie by; endwisemovement substantially in, shavingpositionA and to clamp itiautomatoallyinlsuch position `when themagaf zine is removed., Animportant feature of my; invention consists in,a-,safeiy'razorY having a stationary.- head carrying xedblade-locating devices,v herein shown specifically-as a pair of spaced hooks, in combina,- tion with a frame mounted to rock in the 4head and carrying `a movably mounted blade holder to which a, blade may be delivered for presentation to the blade-locating devices. A. safety razor of this construction has advantages in compact,- ness. of design and economy of manufacture in that boththe frameandjthe headmay be fasll ion'ed from suitably formed blanks ,of sheetmetal As herein shown spring; mechanism is provided for urgingthe frame at-allvv times in a direction to press the' holder vvithY itsblade toward` stat-ionary bladeghooks'.- AnA operating# arm or lever isprovided forretr'acting theframe' and through it theblade holder, thus-teni-porarilyI withdrawing the edge of the blade-fromthe -blade hooks when Ait is desired-to replace thebladein the razor, `A- convenient constructionistoarrangetriest-rame to Jstandiuprightl at arr-V angle ofi about (C1-Levier.

? `in);thetl'ieadi with.; the blade. maintained.` bytherv blade hooks.; atasubstantially: right. ang-les thereto that.fis;to;say.; with a'tforwa-rd anddovvn- Wardi inclinationof: about 45?.. The frame is providedtin itsiupper.v Wall With. an elongated tongue and@ this is.. bent; forvvardlyand .projected througlfnad slot in .the head; so that it. may serve both asian operating,l lever fon-.rocking thehead wheni it is deSiredtocrelease-an b1ade:.andga1so asi-a; seat: for: the. strop,4 in, the stropping, operation; andiasemguide; in presenting themagazine.4 ...Theimaeazine oem invention isprovidedwith an; element :having: the; two; f,unctions; off regis.- teringgitiirthaproner.relation .toitheblade holder and releasing the used blade so thatanew one.

hemresentedto .the.blade,holden` As hereshown .thiselementmartake the;v form of arlwolongated key-orl armshaped `to pry, the. frame carrying. the, ,bladlefholderv away; fromI the vblade llOQkS VW'lflich-rare--a, part of the, stationary head ofy the razor, At thesame time the magazine it- SeliA S.. ,accllaleli' aligned with, the blade; holder` and; a newfbladamay bev advanced te replace theuselgblade whichhas been released by the aloflfftle'keyw:

yQther,featuresof the invention consist in giv-Y ingfthehey a. forked ,shape to straddle the operati-ng-lever ofthe frame, in -providinggco-operativ aiding means, to vinsure-the proper. pathv of insertion and-.providing col-operating cam surfacesse-that the displacement of the frame and the.` release of' thaused-,blademay be easily broughtabout.. y d Y A i Thesef'and. other features of the invention Will be, best.A understood,Land` appreciated. fromY the following. descriptionof a1 preferred embodiment thereof, selected `for purposes of illustration and shown infthe'accornpanyingdrawings, inwhich- ,Fi'gs 1 andjZ ,are views of the razor headin sideel'evation,,showingzlthe blade "holder Ain two dilollfltp0$.itons i l Eig-` 3 isasiinila vivvfpartly in section, show.- ingm astrop inpos ion yin the Yrazor Fig, 4 is a fragmentary View ofthe razor head irrir on televation;l

- Fig; 5- is asectionarview on menne s-s of Fie. 6;

the base of the razor head. The head may be punching and bending operations. .T hebar II merges rearwardly into a narrow upwardly iiiclined iiange I2 and forwardlyjintoanfupright 23 rearwardly on the shaft I9 against the tension of the spring 21. The top wall of the frame 23 is so located as to provide a seat for the strop 36 and yieldingly presses the latter upwardly against a transverse roll mounted to rotate freely on the shaft 25 between the side walls of the frame, as shown in Fig. 3. The frame 23 thus maintainsyielding engagement between the roll and the strop 3d and eliminates danger of slipping between" the two whileit simplifies the conv 4 v struction of the razor by obviating the necessity formed from a sheet metal blank by suitable""" of additional rolls which would otherwise be necessaryy The-front wall of the frame 23 is inter- 1 ruptedvby thev arm 28 which is formed in part vertical flange portion I3.j Thevertical flange-4 portion I3 in turn merges into an upwardly and forwardly inclined wall I4 and thismerges. into an overhanging horizontal portion I5. The p01*-,

tion I5 is bent upwardly at its forward corners and formed into a pair of spacedblade hooks I6. Between these hooks jthe material of the head is bent downwardly to form a guardJ'I. .The guard is corrugated in its upper surfacesand perforated so that itpresents ,a guard bar-.for engaging the face of theu'ser in advance of the blade edge. The `vertical flange portionA I3-of the head is provided at .its opposite ends with transverse rearwardlyextending ears I8 and between these ears extends a transverse fulcrum shaft I9. The stationary head of the razor thus comprises the integral .sheetA metal 'member shaped as described-'with the blade hooks Vand guard and the fulcru'mshaft supported in the ears I8 thereof. 1 l The movable part of the razor head comprises an elongated, box-shaped,` sheet metal Yframe 23 generally rectangular inlcontour and-incrosssection and, therefore stiff in structure. This frame is pivotally mounted adjacent toits lower side to rock upon thefulcrum shaft` I9V as lan axis between the ears I8.- Its end' walls arecarriedupwardly to providebearing'sgas shown in Fig. 6a, for twoparalleltransverse shafts 25: and 26. Its rear wall extends upwardly Y' aridffo'rwardly,-merging into a fiat top wall `and this inA turn merges into a downwardly extending front wall, all as'shown inFig.v 6a?. This'front wall is spaced slightly to the earof the station'- ary front wall I4 ofthe razor head. The frame I3 may be rocked rearwardly by thepryng action of a linger inserted between the wall I4 and the front wall of the frame, aswill 'presently appear. The frame is constantly urged toward the left or'in counter-clockwise direction about the shaft I9 by astiiflea'fspring 2l shown in Fig. 3. The forward endV of this spring isreceived ina slot provided for that purpose ini the of` the razor head vras front flange portion I 3` shown in Fig. 4. Thespring 2l passes under the shaft I9 andits rear edge` engages in'a notch provided for that purpose .therear wall of' the frame 23. The sprin'gisnorfinally curved'j-and consequently tends to rock the frame forwardly carryingits upper end towardthe 'stationary bladehooks I6. f" Integral with the front wall of the frame 123 and at the upper edge thereof is formed a wide tongue or arm 28. This arm extends forwardly and passes with;.clearance through an aperture 2l!A provided inthe forward Vwall I4l of the razor head. It extends downwardly and .forwardly 4from the aperture 20 inconvenient positionzlto act as an operating arm for rocking the fram'e 75 V'from material thereof, as best shown in Fig. 6a. Pivotallymfounfted in the frame upon the upper transverse shaft 2S is a, blade holder. This `.formed of sheet metal folded to present two flatblade-engaging

plates

32 and 33 connected by 'a resilient cylindrical hub portion which encircles the transverse shaft 25. The plate 324 is intact .butthe plate 331is recessedto provide a. resilient detent 34 adapted to snap into an aperture in a blade presented tothe holder and thus prevent retracting movement of the blade. The shaft 26 carries at .itsleft-hand endl as shown inFigs. 9 and 12 apinion 36 and this meshes with a corresponding pinion 35 located on the left-end of the shaft25. This `geared connection' between the two Shafts causes the blade holder to reverse its position .in `the stropping operation as is customary in safety razors of this general type. z v{.One suitable form of blade .40 for use with the above-described razorV isshown vin Fig. `11. It is a narrow single-edged bladev having end notches 4I and a centrally located apertureliZV with parallel edges and rounded ends. The blade 40 may4 be inserted in thebladeholder by pushing :it forcibly -between the plates 32',and 33 of the holder.A The plates are bevelled. atY their right end to facilitate. presentation of the blade and the vdetent 34 is arranged to snap into the central aperture 42 of the blade when that has been moved into registration with the detent. When a blade is seated E'and held by theV blade hooks I 6"the -blade holder is disposed substantially at` rightla'ngles to the frame 23 or tangentially with respect to the axis ofthe frame. Y

t is advantageous, of'fcourse, tolpresent the blades mechanically from a magazne."l One suit'- able"A -type of magazine' is that disclosed wand claimed inv Letters Patent No.V 2,312,502,v dated March 2, 1943, although `certain modifications are necessary in adapting that magazine for the safetyI razor herein disclosed. The magazine mayrbe'bent to shape from a blank of thin sheet metal'or it maybe moulded from anysuitable thermoplastic material. It comprises an clongated'shell' 44Y of rectangular outline-.forming an'v enclosure of which the topis formed by long'ie tudinallyy inturned flanges `45 and 4'6"'separated astenia terminates below f the plane' ofthe innerface Aof the anges by ananiount'equalv to the thickness of-one of 4the/blades for vwhich themagazine is designed. `The end of this pin in co-operation with the

flanges

45 and 46, therefore, gauges theand'yie'ldingly lift-the'jwhole" stack and maintain the uppermost blade in contact withthe flanges 45rand 46. `Atits left-end the magazine'is provided 'with a projecting arm or key 52 'adapted to be yinserted inth'e safety razor vfor the purpose Nof' registeringthe magazine in the proper position for the presentation of a blade and of temporarily retracting the blade holder. The outer end of the arm 52 is tapered and forked, being provided with an elongated slot 53 so located as to straddle the arm 28 as suggested in Fig. 12. The arm 52 is also provided with a projecting cam rib 54 located just above the slot 53 and with a projecting hook 55 struck out of the metal of the arm. The inclined front wall I4 of the head is provided with an elongated slot 29 at its right-hand end into which the projecting hook 55 may move when the arm 52 of the magazine is inserted in operative position between the stationary forwardly inclined wall I4 of the head and the front wall of the movable frame 23. The hook 55 is in eifect a guiding projection which cooperates with the top edge of the slot 29 to keep and guide the key 52 at the proper level when it is forced into the razor. Adjacent to and within the end of the slot 29 the material of the razor head is formed to present an outwardly diverging wall 2l. The inner face of this wall forms in effect a cam surface which co-operates with the rib 54 when the arm 52 is inserted and is eective to pry the frame 23 rearwardly about the axis of the shaft I9 thereby retracting the blade holder and removing the edge of the blade from contact with the stationary hooks I6. The blade is thus freed so that it may be forced toward the left and out from between the

plates

32 and 33 of the blade holder. It will be understood that in this movement the upper surface of the blade is not wholly disengaged from the hooks and consequently the blade holder is maintained definitely in the angular position shown in Fig. 1,'but as already intimated, the sharp edge of the blade is withdrawn from the bend of the hooks I6. Thus, the old blade or the new blade, or both of them, are always effective positively to prevent angular displacement of the blade holder. The right end wall of the frame 23 is provided with a shallow notch or recess 59, as shown in Fig. 6a, to provide clearance for the arm 52 of the magazine when the arm is inserted between Athe stationary front wall I4 of the head and the front wall of the movable frame 23. s

Assuming that the user wishes to replace the 4blade shown in shaving position in the razor of Fig. 7, he will insert the arm 52 of the magazine in the manner explained between the front wall of the frame 23 and the inclined wall I4 of the head until further movement is arrested by engagement of the razor arm with the bend 52'` of the frame 52. In this position the frame 23 has been rocked and the blade 40 moved rearwardly from the position shown in Fig. 7 to the position shown in Fig. 9, i. e. out of contact with the blade hooks I6. The feed slide 41 of the magazine is now advanced `toward the left `Iforo' ing with it the uppermost' bladet'f the stackin the magazine.` vAs the 'movement vof the feed slide progresses the newr bladeis advanced' between'Y the sides off -thelblade holder -rand theold blade yis progressively pushedl out of the'razor head 5 as indicated in' Fig. 10. Finallyl at the end of its movement the* new, blade is -fully seated in the "razor yhead and 'fthe old blade fullyejec'ted therefrom as suggestedinFig.l 11.3 The magazine may now be retracted whereupon the spring 21 is immediatelyeifective to rock theframe 23 forwardly and seat the cornersv 'of' thenew-bl'ade within the blade hooks IB, 'thus Iaccurately' "establishing ythe proper` shaving relation between thetedge 'of thel blade l and 'the 'stationary guardv i ".111 Y' The frame 23 is held upright in the razor head at about an angle of 45 to the axis of the handle and the blade hooksare so located that the blade carrier makes a forward and downward angle of about 45 when the blade is fully seated in the blade hooks for shaving. .When the operating lever 28 is lifted the frame and blade holder are rocked toward the right sufficiently to clear the edge of the blade from the hooks and consequently the blade holder is free to swing in the stropping operation. The insertion of the arm 52 rocks the frame in the same direction but not suiiiciently to disengage the blade edge from the hooks.

From the foregoing description it will be seen that I have provided a novel narrow-blade safety razor of compact design resulting to some degree from the fact that the two gear rolls are disposed in a line or plane making an angle to the axis of the razor handle and that the rocking frame is disposed in an inclined overhanging position. It should be noted also how the operating lever for the frame is shaped and located so that it serves several distinct functions beside that of rocking the frame. v

Having thus disclosed my invention and shown one embodiment thereof in detail for illustrative purposes, I claim as new and desire to Secure by Letters Patent:

1. A safety razor having a head with a stationary guard and blade hooks thereon, an upright frame mounted to rock about a transverse axis in the head and having a transversely extending top wall, a spring urging the frame always toward the guard and blade hooks, a strop roll in said frame co-operating with said guard and the top wall of the frame to control the path of a strop, and an arm for moving the frame away from the blade hooks and the guard.

2. A safety razor having a head with a stationary wall and blade hooks thereon, a rectangular box frame mounted to rock about a trans-` verse axis in the head and v'having end walls carried upwardly above the body of the frame, a blade holder pivotally mounted in the space between said end walls land above the body of the frame, the said frame being spaced from the said stationary wall to receive a prying member therebetween, and a spring tending always to oppose rearward movement of the frame.

3. A safety razor having a head with an upright stationary wall and blade hooks thereon, a rectangular frame mounted in the head to rock about a transverse axis and having a front wall spaced from the stationary wall of the head, an operating arm` extending from the frame with clearance through said stationary wall, and

spring means @posing- Separation 0f .thelfrm from-said stationaryiwalh 'Y s L1A-safety ragoiyhaving afheadwith an uprightgstationary wall. and blade` hookvsthereon, a rectangular frame mounted in the head towrook towardl and from saidV stationary wall and itself having a frontwall spaeed'therefrom to admit a prying member, the said stationarywall having a. longitudinal slot providing a guiding e dge,` and springmeans for opposing yseparation of the verse top wall dspaced beueaththe said ro11,vana yielding meansfor maintaining `the framesV in-` clined ata forwardangle with respect tosaid handle thereby pressing a. V strop against said roll. f a

(i. Asafety razorhaving a stationary head with .blade hooks projecting from its forward side, a box-shaped .elongated framey pivotally mounted to swing on a transverse axis adjacent toits lower side and having its lend walls extended upwardly to provide journals substantially above the body of the fraine, a blade holder pivota1lymounted in Vsaid journals, and means within the holdenfor interlocking with a Yper- 15 forated blade presented thereto.4

' JOSEPH MURSJ