US1600832A - Safety razor - Google Patents

Description

Sept. 21 1926.

- 4c. E. .LINDGREN ET AL SAFETY RAZOR Original Filed Dec. 17, 1924 0%. M mw g 9 w M ww M M e www CHHL EucE/v LlNoenEN G one KARL VlLms/.M U'onnwsmv 5 clean after use. When the safety razor has which forms the subject of this inventionyis face.

Patented Sept. 2l, 1925.

unirse stares CARL EUGEN LINDGRN, QF STOCKHOLM, AND GEORG KARL VILI-IELM Y SKARSATRA, SYVEDEN.

y SAFETY RAZOR.

Original application filed December 177, 1524, Serial ANo. 756,401, and in Sweden August 26, 71924.' Divided and this application filed March 8, 1926. Serial No. 93,163. i x y A I The present vinvention relates to an iin-V provement in safety7 razors for drying-the same after use. It is a well lrnown fact that the usual safety razors are very diiiicult to been rinsed or washed in water for removing the soap lather from the saine, it inust be carefully dried in order to prevent the blade and the other parts of the razorfrom becoming rusty. This entails the risk of cutting ones fingers, however, and it might .also veasily happen that the towel Aor the like Vlby Ameans of which the blade is being dried,

-is cut by the sharp blade and is thus ruined. Now, the purpose of the improvement `to avoid the said inconveniences. vFor this lpurpose the improvement consists' princi'- pally in that the vshaft of the razor which carries the razor blade and the protecting plates constituting the yrazorv head for the saine, is rotatablein a sleeve or the like, which'serves as a handle for the razor, and is connected with a device" for putting the said Shaft and thus also the blade as Well Las the protecting plates for the same, in rapid rotation around the axis of said shaft. ln ythis manner therinsing water remaining on the razor is rapidly thrown off, so thaty the razor will become dry in few moments, particularly if it wasV previously rinsed 4or washed in hotwater. The device for rotating'pthe razor head may be constructed in several different ways. It may, consist, for `instance, of a spring which is'put under 'tension eachltime it is toy be used, or of a small roller with a string or the like woundl said stringthe roller maybe caused toro-"v tate rapidly, or of a small disk whichr may ton `froni droppingout of the cap it is provided 'with a pair of `hooks 34 engaging theinside of a iiange inthe cap; "The Vbe rotated rapidly, for instance byv rolling the same over a table or other suitable sur- 4"bodiinents of the' invention are shown by A wayof example." Figi is a longitudinal j section through a safetyr razor arranged ac- 5O'the saine when the razor is. used for the shaving, and Fig. `2 shows tliesaine safety .ra'zporj viewed 'from the side and with the Q parts in the positions occupied by the same Vln the accompanying drawing two ein-l .insana JoHANsoN, or i when the razor isito be rotated. Figs. 3 and l tshow, both in section, a second embodiment with vthe parts in different positions. v I

Iny the constructional form, ofthe invention illustrated in Figs. 1 and 2, thegldevice for rapidly rotating the razorconsists of-a comparatively long strong coil' spring 2l which isv placed around the shaft 23 rigidly .secured to the razor head 22. and Vis secured to said shaft at one end at 24. `The shaft`23 is rotatable in a sleeve 25 which `forms the .handle ofthe razor, and is longitudinally of thc sleeve 254 and serves for placing the l spring 2l undertension. For this purpose a smallcoil spring 30 which acts as a pawl,

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is inserted between the sleeve 2 5 and the cap f 29, which spring allows the cap to be turned on the sleeve yin one directioinffor placing the spring 2l underA tension', but prevents rotation of the cap in the opposite direction.

'The sleeve 25 is provided inthe end directedr towards the: razor head22 with ya number of axiallydirectedA slots 31 which are open aty the endofthesleeve, and with which` a pin 32 secured totheV shaft 23 may engage, in

order in thismannerto prevent rotationmof theshaft in the sleeve, whenf the apparatus is lused for shaving. In order that the shaft Y* shall be ableto rotate in the sleeve 25 it must therefore be axially `displaced in such manner that the pin`32 disengages said slots i 31. 4For this purpose a sliding push button 33 is provided in the cap 29` against which l button the preferably pointed end ofthe stud '27 bears. ln order to prevent said butdisplacement ofthe shaft 23 in anu'pw'ard bear against thev balls V26 `when' theshaftfis pushedl'upwards'. rfflhe shaft 23 is also'sur-` rounded by. a vnumber of sleeves 37'which prevent the 'turns of the spring 21 from touching` the shaft 23 and thus from braking the rotational and sliding movement of said shaft. JBetween thelowermostsleeve Y ce i yand the bottom 28 of the cap 29 a disk d8 is placed which is so connected to the bottom 28 that it is rotated with said cap. Said dislr is provided withga hole which is normally engaged by the .lowermost bent end 49 of the spring 2l, as illustrated in Fig. l. The described apparatus. operates in the. following manner. When the apparatus has beenV used for shaving, when the various parts shall occupy the `relative positions illustrated in Fig. 1, so that theshafti23 can .not rotate in the handle sleeve ".25, and after the apparatus has been rinsed, the spring 2l lis placed under tension by turning' the cap 29 through .a few revolutions. .The button 33 is kthen. pressed upwards, so that the shaft 23 is Adisplaced upwards in the .sleeve 25, while the spring 21. is

.stretched since owing .to the tension of saidv @spring its lowerinostend 4:9 will retain' its ,engagement with .the hole in .the disk e8. As lsoon as the pin 32.has in this manner i been moved out of engagement with'the 'slot 3l, ias `shown in Fig. 2, .the `wound spring A21 begins to put'the shaft 23 and the razor -head 22 ,attached to the same in rapid lrotation varound tlie longitudinal axis of the shaft. lVhen now the tension ofthe springV .2l decreases, .itslend 49 will lose engagement with the. hole in the disk 48,. so .that the spring 2l may again contract and retract its endA a9 from said hole, so` lthat the razor 'head 22 may .continue the rotation initiated .by the spring, until the water on the-razor has been thrown off owingto the 'action of 1the centrifugal force. vIt is .therefore possible, ias a rule, in .this .manner to .dry the razor -completely'in a few. seconds time.

Y When the xshaft 23 is afterwards again pushed in-to the {position shown in Fig. '1,

Y .and the cap 29 is turned, .the end 4:9of the spring;I vwill again engage .the hole in Ithe i disk a 48.

Y vthe embodiment illustrated inl Figs. 3 and d :the `device vfor rotating the Vrazor r'headconsists of a small roller 38 secured to the outer end .of the shaft v23 of the razor e head 22, :on which roller va stri-ng l39 or the liilre is'iwound, the inner .end `of which is suitably .attached to `=the roller..Y this -case :the shaft .23 is rotatablyand `slidablyrjournalled in a .sleeve 40' serving yas a handle. Such j..ournalling is in .this case .effected meansl oft-woV ball bearings l.ll

' and 42, one bearing il of which is provided :in 'the sleeve d0, Aand' the fetlier bea-ring l2 Yin a second sleeve @which is slida'b'le -onl the vsleeve 40, saidsecond sleeve43 also enclosi'ngftfhe roller 38, as shown in Fig. 3. Rota- :ftion of the shaft .23 relatively tothe sleeve handle ,40 when ithe apparatus Vis yused for Y shaving, is iin this case prevented by the Vrazorl .being provided with a boss for pro- .iedtionle Ywhich ditstiglitly intothe sleeve 40 and engagesthe upper end of vthe saine the result Also in` shaft Q3 upwards from the position shown When the apparatus has been used for shaving` and 'afterwards been rinsed, Ythe sleeve is slid upwards onthe sleeve 40. This displacement of the sleeve 43 Vfirst eX- poses the roller 38.l inniediately afterl2 for effectingthe displacement of the soY wards the balls 42 engage the collar i6 with y,

that on continued displacement upwards of the sleeve 43, the shaft 23 is also displaced unvards, and the projection la thus moved out of engagement with tilie `upper 4end of the sleeve Li0, so that the shaft 23'willbe free to turn in the liant-lle.Y 'The various parts new occupy the positions shown in Fig. l. The outer end of 'the spri 39 which isr placed in a slots?? inVV the outer end Vwall of the roller 33, and which is thus easily accessible, is now. gripped, andby a strong tpull inthe string the shaft 23 andthe razor attached to the fasi-e is rapid-ly rotated around the `longi. tudiiial airis. ofthe shaft 23, so'that the id/lien the razor has been dried in this manner, the string .39 is again wound on .the roller 33, and lthe sleeve 4.3 is hushed down-` wards that the parts. again come to occupy the'positions shown in Fig. V3. The: razor is now ready to bev replaced in its case.

4The embodiments ofthe invention above described and illustrated in thedrawings are only to be `regarded as examples, and it will be evident that the `sai-ne lmay Vbe modified in vseveral ways in regard to their details without. departing from the principle and scope of the invention.

4We claim:

lwater on the razor is rapidly kthrown olf. V

lio

1.-]n a safety razor .the combinationV ofv a I razor'head, a shaft` ycarrying said head,` a sleeve serving as a handle in whichsaid'shiaft is rotatably journalled, `and a device for rapidly rotating .said shaft in said sleevev .around ythe longitudinal a-Xis of the shaft.v

3. In a safety razorv the combination .of a y razor headfa shaft carrying said head, a sleeve .serving as a handle in which saidy shaft is rotatably journalled, a cap rotatable on said sleeve, a pawl device between said cap and said sleeve permitting rotation of said cap on said sleeve'in one direction only, and a coil spring surrounding said shaft and secured at one end to said shaft, the other end of said spring being adapted to be connected to said cap.

4. In a safety razor the combination of a razor head, a shaft carrying said head, a sleeve serving as a handle in which said shaft is rotatably'journalled and is slidable axially, means for locking saidshaft to said sleeve by axial displacement of said shaft in said sleeve, and a device for rapidly rotating said shaft in said sleeve around the longitudinal axis of the shaft.

5. In a safety razor the combina-tion of a razor head, a shaft carrying said head, a sleeve serving as a handle in which said shaft is rotatably journalled and is slidable axially, means for locking said shaft to said sleeve byaxial displacement of said shaft in said sleeve, a cap rotatable on said sleeve,

land a coil spring surrounding said shaft and secured at one end to said shaft, the other end of said spring being adapted to be connected to said cap.

6. In a safety razor the combination of a razor head, a shaft carrying said head, a"

sleeve serving as a handle in which said shaft is rotatably journalled and is slidable axially, said sleeve having a slot, a pin on said shaft adapted to be moved into engagement- With said slot by axialdisplacementof said shaft in said sleeve, a cap rotatable on said sleeve, anda coil spring surrounding said shaft and secured at one end to said shaft,

7. In a safety razor the combination of av razor head, ashaftcarrying said head, a sleeve serving as a handle in Which said Sima is rotatably journaiiea and is sudati@ axially, said sleeve having a slot, a pin on said shaft adapted to be moved-into and out of engagement With said slot by axial ,displacement of said 'shaft in said sleeve, a cap rotatable on said sleeve, a pavvl device betiveenosaid cap and said sleeve permitting rotation of said cap on said-sleeve in vone Vdirection only, and a` coil spring surroundthe other end of said spring being adapted to be connected to said cap in such lmanner as to enable said spring to be Wound up byA rotation of said cap after locking said shaft to said sleeve and to become disconnected from Vsaid cap upon said spring unvvinding by rotating said shaft When released from said sleeve.

CARL EUerN LiNDGREN. Grone KARL VILHELM JoaAasoN.

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