US2190481A

US2190481A - Dry shaver

Info

Publication number: US2190481A
Application number: US215364A
Authority: US
Inventors: Barney R Nyhagen
Original assignee: Individual
Current assignee: Individual
Priority date: 1938-06-23
Filing date: 1938-06-23
Publication date: 1940-02-13
Anticipated expiration: 1957-02-13

Description

Feb. 13, 1940.

B. R. l NYHAGEN DRY summa Filed June 23, 193s l www ATTORNEYS `P atentedFeb'.13,7194() e y 'I .l l

j STATES PATENT `.QFFICE t' 1 2,190,481 f u v e y y b DRY srrAvER- Barney n. Nyhagen, ,New-Yoran. Y.'l :Application june 23,1938, serial No. 215,364:y claims.. (ci. V.eo-+1513) This invention relates toelectric razors or dry inthehandle Gand protrudes through land be- Shavers and-is directed to an 4improved cutter yelld'lhe grOOVed upper end T0 end iS Provided he'adoftheitypewhich `ine1udesf1xed andmovwith an eccentric pin 14 at the terminal thereof.

l able cutterfelements respectively provided with '.Thellilierhead D in this `fOrm ofthe IlVen- 5 complementary cutting teethin which the teeth tion consists of a fixed cutter element 80 which of the movablecutter element la'readapt'ed to enr`is of substantially H-shaped formationin cross l gagethe `slrm during 'thefshaving operation. J l section, thek lower portion of whichis of'a width 'The linvention broadly 'comprehends'in comand length 110` snugly flWhiIl the gIOOVe T0 and binati'onfwith'a dry shaverof the' 'indicated charis provided on one side with a depression'l lto logac'tr, aguard element adaptedtoengage'the .skin accommodate the terminal of the set screw'y 1I 10 which is connected to-and movable with the movfor releasably retaining `thexed cutter element able cutter element and which is spaced from the within the sreoved portion 0f the handle CL cutting teeth thereof, f 'Ihey fixed4 elementV 8B defines ra longitudinal The invention furtnerembodies in a `tlry shaver` y,groove 82 on its underside 'and is'plrovded with of this type adfconnerction between the guard a Pair Qf purellelfuDS-Ild'rlg Side Walls 83, the 15 member and the-movable cutter element which Outer `Sllrfuees 0f Which `are set back from the extends through a slotted portiony of the fixed outer surfacesof the lower portion to provide cutter' elementso as to'guide themovable cutter 'Ong'lldrlal ShOlldelS 34- The Upper ell-d p0rnd.. guardf gements. inv then-movement with tions of the side wallss are provided with later- 2o referenoeto thanked cutter element. 'e ally projecting edees'and are'ytransversely 20 -As ga' lfurtl'ier featrurevthe invention resides in slotted so astodene'longitudinally spaced cutthonovel construction and assembly ofthevcutter tihgteeth. the upper and lowenfaces .of which elements so as .tol permit ofv` ready disassembly of converge outwardly. The wallsl83 are formed the ovable cutter element fromthe x'ed cutter With llgtlldnlly SDaCed-elged pairs of @Slots element iorthe purpose of vcleaning and regrind- `35,` tiled-Purpose O Whfleh jW `11. 1 be hereinafter 25 r ingth'teeth thereof. i setiorth. f i

The' invention further provides an improved A movable cutter element, designated generally means for releasably `holding the movable elebythe reference characterS, isof substantially mentin assembled relation with the xed ele- T-,Shaped CrOSS SECOnl COIl'gllltiOnend 0f a ment, which'means also functions to resiliently f Size to snugly fit between the side Walls 83 of the 30 impinge the confronting faces of the cooperating `iXed cutter element and reeprOeate lngtllde teeth of `the fixed and movable cutter` elements. i nally with referencethereto. The upper POrOn IWith the above. and other objects and ad- 9| of the movable cutter element is formed with vantages in View, :the invention is set forth in leter'edly projecting edges 92, the lower surfaces trated in thev accompanying drawing and pointed flatly engage against the upper surfaces ofl the out in the appended claims. edges 85. The upper portion of the movable cut- In the drawing:l ter element 90 istransversely slotted, to provide Fig. l is a longitudinal Avertical sectional view cutting teeth complementary to the cutting teeth greater detail in the following.speciiicationl illusof which correspond to the'incliriation of and 35 40 taken approximately on .the line Il-l' of Fig. 2` dened by slotting the upper portion of the walls 40 and'illustrating an'adaptation'of the invention. 83. l l n Fig. 2 is `a vertical transverse sectional view The lower portion of the movable cutter eletaken approximately on the line 2-2 of Fig. 1-. f ment 90 is provided with aV central notch 93 and l Fig. 3 is a collective perspective view illustratlongitudinally spaced notches 94, while the oppoing the cutter and. guard elements in separated site longitudinal ends are each recessed topro- 45 juxtaposition. vide a shoulder 95 and an inwardly inclined face Fig. 4 is an end view of the device as shown in 9G. Thetcentral notch 93 is adapted vto be en- Fig. .l. gage'd by the eccentric pin 14 so that upon rota- Referring to the drawing by 'characters of l tion of the motor shaft 12 the movable cutter a dry shaver which houses a motor, not shown, ence to the xed cutter element 80.

and which handle is provided at its upper end In order to detachably retain the movable cutwlth a groove 10 into which extends the terminal ter element in assembled relation with reference of a. set screw 1|. .The rotary shaft 12 of the to thexed cutter element and at the same time motor extends upwardly through an opening 13 exert a tension to impinge the undersurfaces of 55, l

0 reference, C designates generally the handle of element 90 is caused to reciprocate with refer- 5o the teeth of the movable cutter element against the `upper surfaces of the teeth of the xed cutter element, a pair of latch arms 91 are provided,` the upper hooked terminals 98 of which are adapted to engage with the shoulders 95 and the lower terminals of which are fulcrumed by pins 99 to the terminals of leaf springs |00 which are anchored at l0l to the underside of the fixed cutter element Within the longitudinal groove 82. The latch arms protrude through slots |02 formed inthe web of the H-shaped xed element 80 to provide a clearance for the rocking movement of the latch arms when the movablev cutter element 90 is reciprocated.

Ihe cutter head further includes a pair. of: guard elements, designated generally by theref`- erencecharacter H0 and each of Whic'hconsists of a base portion l l l and a cross sectionallyarcu ate flange portion H2 which is curved upwardly 'and has the upper freeV terminal H3 thereof spaced fromandparallel tothe edges of the complementary cutting teeth,v of the xed` andv mov.- able cutter elements 80 `and 9 0.

ting ,teeth Inorder `to connect the guard elements H0 with the fixed cutterelement 80 and to provide meansvvvhereby the Same Will be reciprocated by and with the movable cutter element 90 and have guided movement With reference to' the i'lXed cutter element, transverse rivet pins Il 5 extendf transversely` through the base portions- Illof theguard elements H0, throughthe slots f Iin the Walls 83 and through the notches 94 of the -movable cutter element 90. The rivet pins between the inner surfaces of the bases H tare surrounded `by a hardened tubular sleeve H5 which prevents Wear on the rivet pins. Obviously, the engagementof the notches 94 of `themovable cutter element With the sleeves H6 of the rivetpins 'causes the guard elements H0 to be reciprocated by and with the movablevcutter element so that the guard elementsl and the tooth v. portion of, the movablecutter element are.- both i in motion and move simultaneously whilefin. con- The danced portions are transversely slotted as vat, H4 ,tof* DlQvide guard teethy corresponding to the cut- What is claim-ed is: f n l. A cutter head for dry shavers including xed tact with theskin during the shavingoperationi and movable cutter elements having complemen-- tary cutting teeth, and a yreciprocatory 'guard connected with the movable cutter element to move therewith vand adapted to engage With thel s 2. A cutter head for dry shavers including xed l0.

and movable cutter elementsrhaving complementary cutting teethv in whichthe teeth'ofthe movthe skin,y and a reciprocatory guard element connected to and movablewith the movable cutter element, said Iguardv element. havingI la, toothed free Aedgespaced from.andjparallel to the ,teetl'lf cttlie movable cutter element `and adaptedsto,

engage with the v skin.'l

Y 4. A cutter. head ierdry Shavers. including pairr of, inner `land outerinterfttingl relatively ingv complementary -cuttingrteeth, andf-afgguard;

elementhavingffaffreevedge terminal, spaced from." "n I and parallel witn the cutting, teethandcongnected to theoutercutter element for1reciprocation therewith. j'

5. AA cut.terfheadfor-.drylshavers includingra pair. of intertting fixed :and reciprocable vcutter elements having complementary cuttingtteeth.,

f longjituclinallyf reciprocabley cutter elementsdiavfl 1 keepermeans at the opposite ends :of theymova ableeut'ter element androckablespring; pressed:

latches adjacent theopposite endsof:.theciixecl Y cutter element `and adjustablyengaged withfthe keeper, means'of .the movablecuttenelernent1forvr assembling, the. cutter A elements vand for draw-l ing and. maintaining the confronting surfaces,ot`

the .cutting teeth into,` engagement with., each' other.v-`

NYIiAGEnT