Патент USA US2126728код для вставки
Aug. 16, 1938. L . h. L. BUELL ‘ ' ‘2,126,723 AUTOMATICALLY ADJUSTING. RAZOR J Filed March 15, 1933 ' IliMW-QW'M V 2,126,728 , Patented Aug. 16.1938 UNITED STATES PATENT OFFICE 2,128,728 AUTOMATICALLY ADJUSTING RAZOR ' Charles L. Buell, Xenia, Ohio,’ assignor to John ' W. Anderson, Gary, Ind. Application March 15, 1933, Serial No. 660,883 15 Claims. (CI. 30-87) This invention relates to razors of the “safety” cutting position, have but few parts, and unlikely type. and more particularly to a construction to get out of repair. whereby the head of the razor is enabled to auto A further object of the invention is to provide matically adjust itself to the most advantageous a safety razor, the head of which is revolubly cutting position inclined to the line of draft. connected to the handle for free rotation relative For the purpose of illustration, but without thereto and yieldingly responsive to variations of desire to unduly limit the application or scope resistance and pressure. of the invention, it has been illustrated applied A further object of the invention is to provide to a-well known form of razor wherein a thin means for automatically inducing a partial rota 10 ?exible wafer style blade is clamped under ?ex tive movement of the head about the handle 10 ing tension between cap and guard members by under in?uence of the draft movement of the adjustment of the razor handle which is screw threaded upon a stud “projecting from the cap or razor over the operator's face. clamp plate. an automatically adjustable razor head which will automatically reverse its position when oper 15 It will be understood, however, '15 that the invention is not limited to this speci?c type of construction, but may be applied to vari ating upon opposite sides of the operator's face. ous other forms of “safety" razors of which there In the embodiment of the invention, as here A further object of the invention is to provide means for varying the draft resistance to the movement of the razor head throughout the handle, in which adjusting movement it may be controlled by contact of the operator’s ?nger tip a differential adjustment of the opposite ends of the cutting blade. A further, and none the less important object are numerous styles now available. 20 illustrated, the head of the razor is revolubly mounted for free rotation about the axis of the with a knob or terminal extension at the end of 25 the handle connected to and rotating with the revoluble head. The cap or clamp plate of the head is corrugated at an angle to the cutting edge of the blade whereby the frictional resistance in drawing the razor over the face will tend to align 30 such corrugations with the line of draft and so length thereof, thereby automatically effecting of the invention, is to provide ?nger tip control justment by ?nger e?ort. A further object of the invention is to provide reverse control means for the razor head when operating upon opposite sides of one’s face, 30 whereby the razor will be equally as effective upon to effect a draw out or searing action. Inasmuch one side as upon the other. as the cutting angle most desirable while shaving one side of one’s face is quite contrary to the angle most effective when shaving the opposite side, the directional corrugations are arranged in two reversely disposed series adjacent the op A further object of the invention is to provide a reversely corrugated clamp plate or head. A further object is to provide an improved form of guard plate having inclined marginal teeth or projections, the teeth or projections of opposite edges of which are inclined in reverse directions. With the above primary and other incidental objects in view, as will more fully appear in the and the customary marginal teeth of the guard till. plate are extended in like directions. The automatic adjustment of the razor head to proper inclined relation to the line of draft may be effected not alone by the “tracking” effect of the inclined corrugations, but may be otherwise achieved by varying the frictional resistance throughout the length of the head of the instru ment whereby one extremity of the blade will be retarded to greater extent than the other thereby 50 causing it to assume the desired angular relation. The object of the invention is to simplify the construction as well as the means and mode of operation of safety razors, whereby they will not only be cheap in construction, but will be auto matically adjustable to the most advantageous 20 means for regulating the automatic adjustment 25 of the blade and if desired, augmenting such ad present the cutting edge at such angle thereto as ‘ posite margins of the convex cap or clamp plate, 55 A further object of the invention is to provide speci?cation, the invention consists of the fea tures of construction, the parts and combinations thereof, and the mode of operation, or their equivalents, as hereinafter described and set forth 45 in the claims. In the accompanying drawing, wherein is showed the preferred but obviously not necessarily the only embodiment of the invention, Fig. l is a perspective view of a safety razor, embodying the present invention and illustrating the man ner of grasping the razor to control the adjust ment of the freely rotatable head by contact of the operator's ?nger upon the terminal knob or extension on the handle. Fig. 2 is a longitudinal sectional view of the assembled razor. Fig. 3 2 2,196,738 is a perspective disassembled view of the several parts. Fig. 4 is a plan view of the cap or clamp plate. Fig. 5 is a similar view of a modified form of the corrugated cap or clamp plate. Fig. 8 is a detail view of the guard plate. Fig. '7 is a detail disassembled view of .the handle. Fig. 8 is a disassembled side view of the cap and guard plate illustrating the preferred blade locating means. Fig. 9 is a plan view of the guard plate 10 embodying the preferred locating studs. Like parts are indicated by similar characters of reference throughout the several views. Referring to the drawing, wherein for illus trative purposes there has been shown a Gillette 15 type razor, although the present invention is not limited to such specific construction, I is the usual cap or clamp plate of slightly convex form, hav ing projecting from its under side a centrally dis posed screw threaded stud 2, and, in the usual 20 construction, a longitudinally disposed medial rib I, for locating the cutting blade relative thereto. However, in lieu of the customary rib on the cap I, there is preferably employed the construction shown in detail in Figs. 8 and 9 25 and hereafter described. The wafer type cut ting blade 4 is interposed between the cap or clamp plate I and a guard plate I, also of convex form. The guard plate 5 and interposed cutting blade I are slotted or otherwise apertured to agree 30 with the locating means whether it be the rib 3 or other suitable projections. The screw threaded - stud 2, extending through the interposed cutting blade 4 and the guard plate 5 is engaged within the screw threaded extremity 6 of the handle 35 shaft. As thus far described, the device com~ prises a typical form of safety razor which broadly forms no part of the present invention. In order that the head of the razor may be free to rotate about the axis of the handle, the handle 40 includes a relatively rotatable sleeve ‘I, journaled at one end upon a shoulder or annular rabbet 8 upon the terminal portion 6 of the handle, and likewise journaled at its opposite end upon a corresponding shoulder or annular rabbet 9 upon 45 a terminal knob II. A shaft or stem II, ?xedly secured to the terminal 8 of the handle shaft, extends axially through the revoluble sleeve 1 and is screw threaded at its extremity for en gagement of the terminal knob III. The ter minal knob I I, when tightly screwed upon the stem II, becomes in effect a unitary part of the stem II and the terminal 8 which has screw threaded connection with the stem 2 of the cap or clamp plate I. The grip portion ‘I of the han 55 dle is, however, loose upon the remaining portions which may freely rotate therein in unison with '50 rotary adjustment of the head while the grip portion ‘I is grasped in the operator's hand. It will be understood that when assembled for use, the terminal portion 6 of the handle, the shaft II', and the knob III, are fixedly secured to the head of the razor by the screw threaded engagement of the portion 8 with the stem 2 which serves to clamp the blade I under tension 65 between the cap I and guard plate I. In order to afford resistance to movement of the razor head over the face with the cutting blade at right angles to the line of draft and to cause the head to automatically rotate within the grasped grip portion ‘I until the blade as sumes a line of least resistance, the outer face of the cap I is corrugated. The corrugations I2, of the cap I, are arranged in two series contigu ous to the opposite edges of the cap or clamp 75 plate I and disposed in reversed angular relation. The corrugated areas may be of equal width, as illustrated in Fig. 5, or such series of corrugations may be of tapering contour, the corrugated areas being wider at one end than at the other, as is illustrated in Fig. 4. By the latter means the frictional resistance to movement of the cap or head I over the face varies at different points throughout the length of the head I, and due to such variation of resistance the head is turned _ to an inclined position relative to the line of 10 draft. The same result is achieved in the con struction illustrated in‘ Fig. 5 wherein the re sistance to the movement of the cap or head in a direction coincident with the inclination of the corrugations or ribs II will be less than in a direction transverse to such ribs and hence the tendency will exist for the head to automatically adjust itself about the axis of the handle to pre sent the ribs I2 in parallel relation with the line of draft and hence in the line of least resistance. 20 The corrugations I2 are preferably, though not necessarily, rounded at their bottoms and also at their tops although other forms are effec tive for the purpose. The guard plate 5, in the present instance. is 25 also modified to agree with the directional corru gations of the cap or clamp plate I. It is custom ary to provide marginal spaced teeth or projec tions I3 upon the guard plate 5. In the pres ent instance, these spaced projections or teeth 30 II are inclined in reverse directions at the oppo site edges of the guard plate with their degree of inclination substantially equal to that of the corrugations I2. These inclined teeth or pro jections are therefore aligned with the direction 35 of draft movement of the head. When in use, with the operator grasping the revoluble grip portion ‘I and the head and stem free to rotate relative thereto, the head will auto matically change its inclination to agree with 40 the varying contour of the operator’s face, over which it is drawn, always assuming, however, an inclined relation to the line of draft so that it affords a draw out or shearing action. However, to control and retard this action, and, if desired, 45 to hold the head in its adjusted position after it has automatically assumed proper inclined rela tion, the operator may lightly rest his ?nger upon the knob I0, and by slight pressure can yield ingly resist the automatic adjustment of the head, 50 and if necessary or desirable, by slight pressure thereon, can effect an oscillatory or rotary ad justment independently of the influence of the corrugations I2. It has been found that the freedom of movement of the revoluble head of 55 the razor not only facilitates the shaving opera tion and enables it to be accomplished com fortably and efficiently, but it also obviates tend ency to cut oneself, which is usually the result of drawing the razor in a direction in which it 60 should not be drawn or by engaging the face with the corner of the cutting blade which is auto matically avoided in the present instance by the rotation of the head and cannot be effected ex cept for forcing the razor contrary to its normal 65 tendency. In lieu of the customary rib extending longi tudinally of the cap or clamp plate, the preferred locating means comprises two relatively spaced studs I4 projecting from the top of .the guard 70 plate 5. These studs are located coincident with the ends of the medial slot in the cutting blade 4 and project into correspondingly spaced holes IS in the under side of the cap or clamp plate I. One of the studs I4 is preferably undercut or 75 2,12%728 notched at its outer side as at it, thus forming a hook upon which the blade is retained while the opposite end is being positioned upon the second 6. In a safety razor, a blade carrying head, a handle therefor including a relatively revoluble grip portion and a stationary terminal portion ?xedly connected with the head portion, said ter minal portion being arranged for a little ?nger tip control. '7. In a safety, razor, a rotary blade carrying head portion, and a handle therefor including a ' stud. From the above description it will be apparent that there is thus provided a device of the char acter described possessing the particular features of advantage before enumeratedsas desirable, but which obviously ‘is susceptible ‘ of modi?cation freely revoluble grip portion and stationary 10 in its form, proportions, detail construction and ,mounting portions for the grip. arrangement of parts without departing from the principle involved or sacri?cing any of its advantages. ’ 8. ‘A handle for a safety rabor including a shaft, a‘screw threaded socket at one end of the shaft, a knob secured to the opposite end of the shaft and a revoluble sleeve forming a grip portion ‘ While in order to comply with the statute, the 15. invention has been described in language more or less’speci?c as to structural features, it‘ is to be understood that the invention is not limited to the speci?c features shown, but that the means 10 vfreely‘rotatable about the shaft intermediate the socket and knob. - 9. A handle for a safety razor, including a shaft, a coupling member secured at one end of the shaft for engagement with a blade carrying head, a knob carried at the opposite end of the shaft, an 20 nular bearing rabbets on the adjacent sides of and construction herein disclosed comprise the 20 preferred form of several modes of putting the invention into effect, and the invention is there» fore claimed in any of its forms or modi?cations said coupling member and knob. and a ‘tubular . within the legitimate and valid scope of the an grip member revolubly engaging said heating pended claims. rabbets. _ . 25 Having thus described my invention, I claim: 10. A safety‘ razor including a corrugated cap 25. 1. A safety razor including a blade carrying portion having diagonal corrugations of progres— '1 head and a handle therefor, upon which the head is pivotally mounted for free rotary motion sub 30 sively varying length disposed in reversely inclined series adjacent to opposite margins of the cap. 11. A safety, razor including a corrugated cap stantially in the plane of the head and about the , axis of the'handle. ‘ 2. A safety razor including a blade carrying head, a shaft, a coupling member secured at one end of the shaft for engagement with the blade , portion having two converging, series of corruga . 30 tions. ‘ 12. A handle for a safety .lrazor including a shaft carrying head, a knob carried by the opposite end and ‘coupling member secured at one end of the 35 of the shaft, a tubular grip member rotatably _ shaft for engagement with a blade carrying head, a knob carried at the opposite end of the shaft 35 mounted upon said shaft intermediate said - coupling unit and said knob, and means affording variation of frictional resistance throughout the 40 length of "the head to movement over the face of the operator wherebyone end of the head ‘will be retarded in its movement relative to the opposite end thereby causing the head and coupling unit to have a relative movement with respect to said tubular grip member. 3. A safety razor including a blade carrying’ 45 head having recesses formed therein and inclined to the longitudinal center line thereof, a handle . . portion therefor upon which the head is mounted for relative rotary motion about the axis of the 50 handle, ‘and . a plurality of de?ecting portions formed on said head intermediate said recesses for effecting automatic rotary adjustment of said head with respect to said handle, in response to frictional variations throughout the length of the head to movement over the face of the operator. 4. A safety razor including a blade carrying head, a handle portion therefor upon which the head is mounted for relative rotary motion, andv inclined corrugations upon ‘the head'tending to 60 align themselves with the direction ‘of movement over the face of the operator and thereby auto matically rotate the head about the axis of the handle to an inclined position relative to such direction of movement. 5. A safety razor including a‘ blade carrying head, a handle portion therefor upon which the head is revolubly mounted for free rotary motion about the axis'of said handle, and means upon the handle for controlling the independent rotary 70 motion of the head, said means being arranged for a little ?nger tip control. and a tubular member rotatably mountedupon said shaft intermediate said coupling‘member and said knob. ' ' ~ ‘ . , 13.‘ In a safety razor, a handle, a blade~carry ing holder carried by and readily, movable with 40 respect to said handle about a pivot extending transversely to the longitudinalicenter line of the holder, said holder being freely movable to readily align itself longitudinally with the body of a user when brought intocontact therewith to provide a uniform’ distribution of pressure throughout 45 the entire cutting edge of the‘blade upon said body; ' , 14. A safety-razor including a blade-carrying head, a handle portion therefor upon which the 50 head is mountedfor relative rotary motion about an axis extending transversely to thelongitudinal center line of said head, and inclined corruga tions upon the head tending to (align themselves with the direction of movement of the razor over 55 the face of the operator and thereby automati cally rotate the head about said axis to an in clined position relative to such direction of move ment. ‘ , ' 15. In a safety-razor, a handle, a blade-carry ing head carried by said handle on a pivot having an axis extending transversely to the longitudinal center line of the head, said head being movable about the axis of said pivot for aligning the head and blade carried thereby longitudinally with re 65 spect to the body of the user when brought into contact therewith and to provide. a substantially uniform distribution of pressure throughout the entire cutting edgeof the blade upon said body. 70 CHARLES L. BUELL.