US1848078A - Safety razor - Google Patents

Description

March l, '1932. B G. JANSSON 1,848,078

SAFETY RAZOR Filed Jung. 20, 1931 2 Sheets-Sheet lv March 1, 1932.

B, G. JANSSON SAFETY RAZOR 1951 A2 Sheets-Sheet Filed June 2OI Patented Mar.` 1, 1932 BENNETT G. JANSSON, -oE KITTEEY, MAINE, ASSIGNOR To EivrEI/asoN APPARATUS COM'- :eANxnY OE MELROSE, MASSACHUSETTS, A; CORPORATION OE RHODE ISLAND v o SAFETY:RAZOR Application filed June v2o,Y

To most users of safety razors the ability K to change blades quickly is a Very important blade, the introduction of a new blade, and

the clamping of the new blade in shaving' position, but it also involves the question of so relating these parts that the-danger ofcutting the fingers will be minimized', and liabilf ity ofdropping or misplacing parts of the razor, or gettingthem out of adj ustment,'will be obviated. i f

These requirements suggest lthe desirability of a construction in which a 'spring will be used to operate parts for holdingthe blade clamped in shaving position with sonie'man-` ually operable means for "releasing the bladev against the tension of the spring. l

An important objection, however, to any razor in which the blade is held clamped by a spring is that the edge ofthe blade is likely to lvibrate during shaving. '.In fact, this objection exists in razor constructions of other types. Vibrationofsthe blade during shaving is not onlylikely to result in a poor4 shave, but'it also increases the scraping and cutting the face.y

The present inventionv lis lespecially con-` cernedV with these considerations. It aims to devise a razor construction which will per` mit the quick and convenientchanging of the blades while minimizing the danger of cut-, ting the fingers, and in which any substan-- tial-vibration of the `cutting edge of the blade vdanger of during shaving will beprevented.

` The-nature of thevinvention will be readily understood from the` following description when Aread in connectionwith the accompanyf ing-drawings, and thevnovel features will be" particularly pointedout Ain the appendedy claims. Y i

In the drawings, g l

Figure l is a perspective viewy of a safety Figs. Zand 3 1931.A seriaiNp'. 545,714. Y 1 p razor constructed inv accordance with thisl in# vention; f A

are longitudinal Sectional views of the razor Shown in Fig; l, showing Y thefblade holder in openkrand closed posi#y tions, respectively;

rig. 4 1s a plan View of a razor Similarto that fsliown iin-Fig;V l, but modiliedin minor"V of the handle particulars, the. grip portion being shown in secton;

ig. 5 is a view similarpto Fig. 4 Showing' Vanother modification;

VVFiga 6 is alongitudinal,"sectional view of` the construction shown in Fig. 5 but. at'rightl angles to the latter figure;

Fig. -7 isa rear elevation' of razor shown in Figs. 5 and 6;; Y

Fig. 8 is a sectional view on the line 8-8,

parts ofthe Figg'and Fig; 9 is a sectional view on the line 9 9,

Fig.l 2.

GitV

f -Referring first to Figs. 1,2 and 3,-the

razor there shown ,comprisesv a blade holder consisting 'of'upper andlower jaws 2 and 8,

respectively, arranged to clamp a razor blade 4' between them: "hefupper jaw forms a cap and the lower jaw a guard for the razor throughV which `a hinge pin 6 extends, thusA blade, the latter -jfaw having-guard fingers `5 similar to those used on razors of prioreonpivotingf'thetwo. jaws together for relativeV y swinging 'movementinto blade clamping and releasing positions. 1n thevform shown-'the lowerjaw 3 of the blade holder is provided' Iwitlra relatively'iiat'upperl face @,iFig. '1, onl which the blade l may. be; positioned, this particular form of blade being comparatively narrow, and thev upper j aw has a corresponda ing fiat face 5 to cooperatev with the faced in gripping the blade;v The bl'adehas two holesA 7+-7 therethrough and the .lowerj'a'w v `j Bfis 'provided withA positioning .spins 8;-8k

to enter 'these -holes,fthe upper aw.- beingcut out, as shown at 9, Fig. 2, to receive the pins. It may also be noted that the holder is slotted quite deeply to-receive the blade so that when the blade is in its shaving position, as shown in Fig. 3, its rearward edge lies considerably behind the pivot pin 6 and well back toward the rearward edge of the holder, this arrangement being provided partly for the purpose of reducing the overall width of the holder.V

The razor also includes a handle for the holder, the handle consisting of a tubular grip portion 10 and a forked shank portion 12. This shank portion may conveniently be formed integral'with the cap or upper jaw 2 of the blade holder, and in any eventshould be rigid with the latter member. It also includes a part 13 which extends into the upper end of the grip 10 and is secured thereto by a pin 14, The shank also is curved, as best shown in Figs. 2 and 3, to oiiset the blade holder relatively to the grip portion 10- of the handle so that the cutting edge of the blade will be positioned closely adjacent to the axis of the gripy 10. rfhis relationship materially improves the hang of the razor and facilitates the guiding of the razor by the hand since the line along which the guiding movement is directed passes through or close to the shaving edge which is, of course, the part thatv must be accurately moved and controlled.

For the purpose oi? operating the blade holder to; clamp. or release a blade, a plunger 15 is mounted to slide longitudinally in the grip portion 10 of the handle and is positively connected with they lower jaw 3 by a link 16 and an arm 17, the-arm being integral with, or otherwise rigidly secured to, the jaw A coiled spring 18 located in the grip. 10 encircles. a part of the plunger 15 and abuts at its lower end against a disk 2O which is rigidly secured to the lower end of they plunger. The upper end of the spring abuts against the lower end oit the sha-nk meinber 13.. 'lhis spring, theretore, tends to :torcev the plunger downwardly and serves to maintain the jaw 3 in its closed or blade clamping position.

vFor the purpose of pushing the plunger upwardly to swing the lower jaw into its open position, a short plunger or push button 21 is slidably mounted in the lower end of thegrip 1(2), the upper end of this button being drilled; to receive the lower extremity of the plunger loosely.y Consequently, by pushingupwardly on this button the lower jaw 3 may be swung into its open position, as shown in Figs. 1 and' 2. As soon as the button is released the spring 18 acts immediately tereturn the lower Vjaw or guard itsfclesed or bladel clamping positiony agaenr.v Y l The oiaeration of the plunger is` facilitated by providing'the grip 10 of the handle with isfiaor's a disk-like enlargement 22 which can be engaged by the iingers while the thumb presses on the button 21, as shown in Fig. 1.

For the purpose oi locking the blade holder in its open position, a bayonet slot 23 may be formed in the lower part of the grip and a pin 2i secured transversely in the push button 21 where its end will extendinto the slot 23, so that by turning the button to the right, Fig. 1, when it has been pushed inwardly, it may be entered in a horizont-al port-ion of the slot where it will prevent the spring 18 from forcing the plunger downwardly. The lower end of the button also maybe roughened, as shown in the drawings, to give the thu-nib a better grip on it in making the turning movement either to locll or release the button.

Preferably, although not necessarily, the upper portion of the plunger 15 is Aflattened where it extends through the part 13 of the shank, and thislpart is slottedto 'orrn a guide for theiat part of the plunger, the iiattened portion ot the plunger also being slotted, as shown at 25to receive the pin 14. The lower end of this plunger is guidedA by the engagementot the head or washer 20 with the walls f the bore in the grip 10.

In using this razor a blade may be'very quiclrly removedvby holding the-rwor in a horizontal positien, as-shown in- Fig. 1, pushin-Lginwardlyv on the button 21 and thereby swinging the lower j aw or guard 3 into a substantially horizontal open positionV where it lies against the arms of the sha-nir 12', and' then picking up the razor blade by its ends, as alsoindicated in sai-d figure.y A. new blade may then be placed in the holder while holding the blade by its ends between the thumb and tore This placing oi a new blade in position is facilitated? by holding the razor horizontally with the jaw 3: in a horizontal plane, as shownl in 1 As soon as the blade has been dropped on to the surface a with the pins 8 8V entered in the holes 7-".7, the button 21 may be released, whereupon the spring 18l immediately swingsthe lower jaw 3 into its closed. position, as shown in Fig. The razor then is ready for shaving. Usually the razor is held by the lingers and thumb of the right hand while the blade is removed and a new one replaced' by the thumb and fore finger oit the leit hand. The hold'eiA of the razor may be steadied during this operation, if desired, bythe third or little finger, or both, ofthe leit hand.

Attentiony is' particularly directedl to the' v fact that in this constructionthe lower jaw or guard 3 only is moved, the upper )aw or cap 2 being rigid with theh-andle. This is important inv the razor construction here shown; in which; the blade Aclamped in its shaving position by a spring, since the torce exerted on the blade by the' resistance of the beard during'shaving tends to move theblfade backwardly into its holder Aand -toV crowd it.

i against the upper jaw or cap 2.` This Vupper jaw, however, and the rear walls ofthe slot in which the blade is located' are all rigidwith the'handle, so that the'bl'ade is rigidlysupported adjacent toV its-edge and any substantial vibration of `the blade during shaving is'` prevented, notwithstanding the fact that the. blade is `clamped in shaving position-'solely by the action of the spring 18. tendency ofthe blade to slip backwardly injthe holder is prevented by the pins 8 8, 'the force soV exerted on the pins tending, due to the relationsliip oit' the pins to the hinge pin `6, to

close the jaw 3 all the more lirmly and thus to assist, rather than oppose, the action of the spring 18. lnltliisarrangement, therefore,'the secure clamping of the blade which is essential to a goodshave is obtained ina construction which permits a very quick changing of the blades and in which noV parts of the razor areremoved during thev chan-ging.`

operation so that any possibility of dropping parts or placing them in poorly adjusted positions is prevented.

Fig. 4 shows a. construction substantially like that illustrated in Figs. 1, 2 and 3, eX- y the link 16 and in providing a differentV push button construction. In this embodiment ofi Y the invention theplunger 28, which corresponds to the plunger 15, is extended upwardly and is connected directly to the arm 17 by a pivot pin 30, this pivot'pin extending through a. slot formed in the eXtreme'upperr end of the plunger. .y

The push button 31 is slotted, as shown at 32, so that it can slide up and down `past la pin` i 83 which is liXed transversely in thetwo walls of the grip 10, and this button is notched,

as shown at 34, Fig. 5, tovreceive the pin when' the button is given a slight rotatingmovenient toward the right after being pushedupwa-rdly to its extreme limit. When so positioned the button and pin lock-the holder s connecting` said grip portion with said uppery jaw, said shank being curved toA offset said open. This arrangement, however, avoids the slotting of the lower end ofthe grip 1() which is desirable toprevent the entrance of lather and water into the bore of the'grip where they might cause .corrosion of the parts. rllhe relatively close lit of the flattened portion of the plunger where it slides through the part 13 ofthe shank also is ofV advantage for this reason. Y y

While I have hereinshown and described preferred embodiments of .my` invention, it

will be understood that the invention may be y;

embodied otherorms withoutdeparting movement,*a handle for said' holder eXt/e'nd'- i ing at approximately right angles thereto and secured]- rigidly to said 'upper jaw," a vplunger slidable in said handle longitudinally thereof, positiveV connections between said plunger and said lower lj aw whereby the lower jaw may beopened and closed by moving said plunger, and a spring in said handle for acting on said plunger in a direction to" hold said lower jaw close Y 2. A-safetyrazor I comprising a blade holder including upper and lower jaws for clamping a razor blade between them,'s`a`id upper ja'w forming-a cap andsaid lower jaw 'a guard for the'razor` blade, a. hinge connecting said jaws for relative opening and closing movement, a hand-le for said 'holder extend-` ing jat approximately right 'angles' thereto and `secured rigidlyI to said` upper jaw, a plunger slidablein said handle' longitudinally said plunger,'a spring in said handle'forv c actingon saidplunger in a direction to hold said lower jaw closed, and an Voperating element for.V Ysaid plunger comprising a push?Y button projecting from the lower endof the grip portion `ofthejhandle, the handle being ,provided .with-an enlargementabove its lower end or'ailordinga grip .forthelingers while i i the thumb pushes said buttonupwardly' 3. A safety razorcomprising a blade holder including upper and lower jaws Jfor clamp-l ing a razor blade between them,` saidY upper 'i thereof, positive connections between said jawforming a cappandsaid lower jaw 'a C guard-for the razor blade,- a hinge connecting i said-jaws for relative opening ande-losing movement, a handle for said holder extending at approximatelyright anglesvthereto and secured rigidly to said upperjaw,xsaid j' handle including a grip portion and a shank holder relativelyto the axis of the grip poraxisto extend closely adj aoentV to the cuttingV v edge oa blade clamped in shaving position in said holder, a plunger slidably mounted in said handle, positive connections4 between said plunger and said lower yjawfior causing l the movement oftheplunger to swing v'they lowerrjawinto open and clo-sedpositions, v

.iso f y y tion o-tli'ehandle sutliciently'to cause said Y nr u:

fin

closed, and amember operatively connected. with said plunger and arranged to be engaged by the hand to move said plunger against the action of said spring.

el. A safety razor comprising a blade holder including upper and lower aws for clamping a razor blade between them, said upper j aw forming a cap and said lower jaw a guard for the razor blade, a hinge connecting said jaws for relative opening and closing movement, a handle for said holder extending at approximately rightangles thereto and se# cured rigidly to said upper jaw,l said handle including a shank rigid with said uppervjaw and a tubular grip portion separate from but rigidly secured to the lower end of said shanlna plunger slidable in said handle, positive connections between said handle and said lower jaw for causing the movement of the plunger longitudinally of the handle to swing said lower jaw into its open and closed positions, said plunger being guided in the shank portion of said handle and also in the lower part of t-he grip portion or the handle, and acoiled spring in said handle encircling said plunger and operating thereon t0 push the plunger downwardly and thereby serving l normally to hold said lower jaw closed.

5. A safety razor comprising a blade holder including upper and lower jaws for clamping a razor blade between them7 said upper jaw forming a cap and said lower jaw a guard for the razor blade, a hinge connecting said jaws for relative opening and closing movement7 a handle for said holder extendingl at approximately rigat angles thereto and secured rigidly to said upper jaw, plunger slidable in said handle longitudinally thereof, positive connections between said plunger and said lower jaw whereby the lower jaw may be opened and closed by moving said plunger, a spring in said handle Vacting on said plunger to push it downwardly and thereby tending to hold said lower aw closed7 a push button projecting from the lower end of said grip portion and operable to push said plunger upwardly to open said lower jaw, and a transverse pin secured rigidly in said handle beside said buttom said button being out away to enable it to move longitudinally of the handle relatively to the pin and having a transverse notch therein to receive said pin to loclr said lower jaw in its open position.

6. In anale/ty razor, the combination of a blade holder inoluding a guard having a blade supporting face on the upper side thereof, a cap cooperating with said guard to clamp the blade on said 'face in position for sha ing, said cap and guard cooperating to enclose the greater part of said blade leaving the edge portion thereof exposed, saidcap and guard having interengaging hinge lugs extending from the rearward portions thereof, a pivot pin extending through said lugs and connect- BENNETT G. JANSSON.

CERTIFICATE 0F CORRECTION.

Patent No. 1,848,078. Granted March 1, 1932, to

BENNETT G. JANssoN.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 4, line 1, claim 3, for the word "connected" read associated; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed `and sealed this 12th day of April, A. D. 1932.

. M. J. Moore, (Seal) Acting Commissioner of Patents.

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