US1017138A - Safety-razor. - Google Patents

Description

H. GHRISTIANSEN.

SAFETY RAZOR.

APPLICATION HLED 1,111.18, 1911.

1,01?, l 88 Patented Feb. 13,1912.

entran sfrarns 'Parana ersten.

. HANSCHRISTIANSEN, 0F BOSTON, MASSACHUSETTS, ASSIGNOR TO BEDFORD SAFETY RAZOR COMPANY, OF BEDFORD, MASSACHUSETTS, A CO]3I"O1R,ATIO1TA OF MASSACHU-4 SETTS.

SAFETY-RAZOR.

animas.

Application led January 18, 1911.

To all 'whom t may concern.' l

Be it known that l, HANS CHRISTIANSEN, of Boston, in the county of Suffolk and State of Massachusetts, have invented cer-- tain new and useful Improvements in Safety-Razors, of which the following is a specification.y

This invention relates to razors ofv the type known as safety razors, and has particular reference to implements of this character of a type designed to enable the bladeholder and blade to be adjusted relatively to 'the handle.

One of the -objects of the invention is to provide a safety razor h'aving means where-` by the blade can be adjusted at various anstructed in accordance wit-h my invention,

the view being from the rear of the bladeholder, the handle vbeing broken out. Fig.

2 is al erspective view looking from thel front o the blade-holder. Fig. 3 is a plan View of the razor folded.. Fig. 4 is an`enlarged sectional det-ail of the friction joints betweenl the handle-arm and the bladeholder. Fig. 5 is a detail perspective view of the springwasher used in connection with through the razor, and showing by full and dotted lines two adjustments. Fig. 7 represents a section on line`7-7 of Fig. 6, but on a larger scale. Fig. `8 is a perspective view of the razor when adjusted toV position to use it in a manner o f holding similar to that of an ordinary razor. Fig. 9 is a front elevation, partly insection, of another modiication in the mounting of the blade clamp. l All of the figures of the drawing, excepting Figs. 4.and 7, are substantially full size. imilar reference characters indicate the same or similar parts in all of the views.

Referring first to the embodiment of the invention illustrated in Figs. 1 to 8, inclusive, the blade is indicated at a. Preferably, this blade is of exceedingly thin steel and having but one sharpened edge. l do not limit myself, however, to the particular type of blade illustrated, since any other well known form of blade might be employed, provided such blade be of a size to lit the holder. The blade-holder 15 is of sheet metal and preferably iiat,excepting at its front and rear edges, its front side being adapted to support a flat blade and being wider than the blade, and its front edge portion being curved rearwardly, as at 16. The curved edge portion of the-holder is formed with a longitudinal slot 17, and while the extreme edge of the curved lportion is preferably smooth, so as to form practically a straight part to move easily over the skin, the part thereof which forms the outer edge of the slot 16 is corrugated as at 18 to more readily `permit lather and severed hair to -pass the guard and escape through the slot 16'. The corrugated edge of the slot is offset inwardly from the blade-supporting side by the curvature of the said edge portion of the' blade. The rear edge of the bladeholder 19 is provided with hinge members, as by rolling the piece of sheet metal over, as best indicated in Fig. .4. Pivotally mounted in this rolled over edge 19 is a wire clam 20, said clamp having astraight elonate portion to bear against the outer surace of the blade a, and bent. end portions or arms 21, the extremities of which are bent inwardly t0 form hinge members or pintles, which are inserted in the rolled edge 19to form hinges on which the clamp may be swung, and'portions of the arms 21 being curved, this curvature being not only rearwardly, as best shown in Fig. 4, but. also curving somewhat inwardly or toward each other behind the end edges `of theiholder 15, as shown in Figs. 2 and 3. When .the blade a is laid against the holder lwith one edge against the thickenedory rolled over portion 19, the clamp having been previously'swung outwardly, said blade may then be `quickly and firmly locked in place .by the return of the clamp tothe position shown in Figs. 3

Patented web. is, rara. j

serial No. 603,269. Y y

and 4, the curved arms 21 of the clamp snapstraight elongated part thereof will bear firmly against the outer face q f the blade and be locked in that position. To release the blade it is only necessary to press outthe outward pressure being sufficient to spread the arms 21 outwardly as they pass the end edges of the holder 15. The said end edges constitute rigid locking members, while the curved arms 21 constitute resilient or yielding locking members adapted to cooperate with said rigid members in locking the clamp in its blade-securing position. Suitably connected with the rear face of the holder 15 is a hinge socket 22 (see Figs. 1 and 4), the orice of which is tapered to fit a tapered hinge .pintle 23 of an innen handle member 24, the end of said pintle 23 being threaded as at 25, to receive a nut 26. Between the nut and the end of the socket 22 is a spring washer 27, the construction being such as to constantly exert a tendency to draw the tapered pintle 23 into the tapered socket orifice to exert sufcient friction to hold the socket 22 on the pintle 23 and yet permit the socket to be turned when it is desired to adjust the angle of the bladeholder relatively to the handle.A In practice I find that this tapered joint enables suiiif cient friction to be obtained to hold the blade-holder with sufficient firmness atl any A angle at which it is desired to'use therazor. It will be noted that the axis of the socket of bearing 22 is in a plane parallel with the plane of the blade-supporting portion of the blade holder and at right angles to the longitudinal axis thereof. The other end ofthe handle member 24 is connected by a pivot or hinge pintle 28 with an outer handle member 29, said outer member having a sleeve 30 that is longitudinally agdjustable for a purpose presently described. The outer member 29 is slotted as at-31, and the end of the inner member 24 extends into said slot. This slot 31 is of a length to permit the greater portion of the member 24 to fit within it when the sleeve 30 is slid along and the parts occupy thefolded position shown in Fig. 3. The end of the member 24 within the slot 31 is formed as a toothed segment 32, either of the recesses between the teeth being adapted to be engaged by a thin or sharpened edge or tooth 33 at the end of the sleeve 30, when said sleeve is adjusted to the position shown in' Fig. 6. In order that the sleeve 36 will remain in the position indicated. in Fig. 6, the end of the outer member 29 is slightly tapered as at 34 (see Fig. 7,) the inner surface of the sleeve 30 being also preferably slightly tapered, so that when the sleeve is slid along to the position shown in Figs. 6 and7, it will bind frictionally in that position, and by reason of its edge or tooth 33 engaging .the handle members being as shown in Fig. 3, the sleeve-is slidable on the member 29 and may be moved to the position shown in Figs. 1 and 3. To prevent the sleeve from slipping entirely off the member 29, the latter may be provided with a longitudinal groove 35,.into which a pin 36 projects `from the sleeve 30. The inner handle member 24 extends at an angle with its pintle 23, so that the inner member-is adapted to either project outwardly from the back of the holder at an angle with the cutting edge of the blade, as shown by Fig. 1, or to extend beside the back of the holder and approximately parallel with the cutting edge, as shown by Fig. 3. It will be seen that two hinges are provided, one formed by the socket 22 and pintle 23, and having its axis substantially at right angles with the cutting edge of the blade a, while the other is formed by the'pivot or pintle 28, and the end of the inner handle through which said pintle passes, the axis of the last mentioned hinge being substantially at right angles with the axis of the other hinge. This arrangement of hinges and the means provided for locking the two handle members together permit the following adjustments: First, when the handle members are interlocked the entire handle may be either extended backwardly from the holder to permit the razor vto be used as a hoe; secondly, the entire handle (its members being interlocked) may be extended beside the back of the holder, the handle being in a plane approximately parallel with the cutting edge of the blade, and the outer end of the handle projecting from one end of the holder and blade so that the razor may be used like an ordinary razor. In either ofthese adjustments the handle members may be adjusted to form an angular handle, as shown by full lines, or a straight handle, as shown by full and dotted lines, (Fig. 6). Thirdly, unlocked, the handle may be folded to materially reduce its len th, as shown by Fig. 3, and swung inwarfly against the back of the holder, thus enabling the razor to be packed in ar Vrelatively small case. When the handle is the member 29, the tooth or edge 33 of the 130 If it be desired that the member j.

Asleeve is simply caused to extend outside of the last tooth of the segment 32, as indicated by dotted lines in Fig. 6. `The adjustments described enable the razor to be handled or used very much in the same manner as an ordinary razor not of the safety type. This adjustment is lshown in Fig. 8, where the parts occupy almost the position shown in Fig. 3, excepting that the outer handle member, when in the position of Fig. 8, is swung around into alinement with the inner member, instead of being folded against the latter, as shown in Fig. 3.

In Fig. 9 the blade clamp is practically the same as in the struct-ure illustrated in Figs. 1 and 2, excepting that instead of the ends of the wire forming the pivots by extending into the rolled edge 19, theends of the wire forming the spring clamp are formed with openings to receive a pintle 43, having a head 44 at one end and mounted in the rolled edge 19 of the blade-holder, a nut 45 being employed to hold the pintle in place.

As indicated in Fig. 1, the end of the groove 35 branches as at 37 both to the right and to the left, these branches'not being at a right angle to the main portion of the` groove 35, but nearly so, so as to actas cam grooves or branches to co-act with the -pin 36 to force the sleeve positively to position to lock the arm 24 as hereinbefore described. When the sleeve 30 is slid from the position shown in Fig. 1 to the upper end ofv the groove 35 and then turned either to the right lor left, the pin 36 travels along one of the cam branches 37 to force the interlocking edge or tooth 33 of the sleeve to position to lock the member 24.

1n each of the above-described embodiments .of my invention relating to the bladeclamping means, the clamp is permanently connected with the blade holder in such mannerthat it is adapted to move toward and from its blade-securing position, the holden and clamp being provided with cooperatmg hinge parts or members permitting these movements of the clamp. The

clamp and holder are also provided with cdperating locking means which automatically hold the clamp positively 'in its blade-securing position and permit the displacement of the` clamp by the application of pressure tending to separate the elements of said locking means. rlhe holder equipped with a clamp and connecting andy locking means' .therefor characterized as above stated, is adapted to be made in either of the simple and vcompact forms illustrated, the

construction cooperating with the .handle construction in reducing the device to a compact form for storage and in e'ecting any desired relation between the handle and blade desired vto permit the razor to be manipulated in various ways andl particularly with the handle extending approximately lengthwise of the cutting edge.

The arms 21 included in the form of clamping member shown by Figs. 1, 2, 3, 4, 6, 8 and 9, by reason of the fact that they project across the ends of the holder and outwardly from its inner side, constitute push pieces whereby the elongated clamp 20 may be forced away from the holder to release the blade. Said arms also constitute stops which bear against the oppo-site ends of the blade and prevent endwise displacement thereof in either direction.

'I claim 1. A. safety razor comprising a blade holder, a handle pivoted to the back of the blade holder in a plane parallel with the plane of the blade supporting portion and at right angles to the longitudinal axis of the blade holder, whereby said handle may swing into a position parallel with said axis, and means for permitting adjustment of the relative angle of said blade holder and handle when the parts are swung into parallel position.

2. A safety razor comprising a blade holder, an angular arm pivoted to the back 'of the blade holder in a plane parallelwith ber adapted to extend parallel with said axis, and a handle pivoted to said member to permit relative angular adjustment of said handle and arm irrespective of the relative positions of said arm and blade holder. j

3. A safety razor comprising a blade holder, an angular arm pivoted to the back of the blade holder in a plane parallel with the plane of the blade supporting portion and at right angles to the longitudinal axis of the blade holder, said arm having a member adapted to extend parallel with said axis, a handle pivoted to said member to permit relative adjustment of said handle and arm irrespective of the relative position of said arm and blade holder, and means for interlocking said arm and said handle in different relative positions.

4. A safety. razor comprising a blade holder, an angular arm pivoted to the back of the blade holder/in a plane parallel with the plane of the blade supportin portion and at right angles to the longitu inal axis of the blade holder, said arm having a member adapted to extend parallel with said axis, said member having a notched outer end, a handle pivoted .to said member to permit relative angular adjustment of said handle and arm irrespectiveof the relative position of said arm and blade holder, and means for engaging said notched end to lock said arm and handle in different relative positions.

'5. A safety razor comprising a blade holder, an angular arm pivoted to the back of the blade holder in a plane parallel with the plane of the blade supporting portion and at right angles to the longitudinal axis of the blade holgder, said arm having a member adapted to extend parallel with said axis, said member having'a notched outer end, a handle pivoted to said member to permit relative angular adjustment of said handle and arm irrespective of the relahandle or at right angles to the latter in shaving, said curved edge portion serving as a detent to engagev the handle when the latter is parallel with the blade holder.

7. A safety razor comprising a substantially Hat bladcholder, an elongated clamping member formed of wire having its ends pivotally supported in said blade holder and adapted to secure a flat blade against one side of the latter, portions of said Wire rbeing curved to form stops to prevent endwise movemx'ant of the blade, Isaid wire being also vprovided with means for frictionally engaging said blade holder.

8. A safety razor comprising a substantially flat blade holder, an elongated clamping member formed of a wire having its ends pivotally supported in said blade holder and adapted to secure a flat `blade against one side of the latter, portions of said Wire .at each end of said clamping member being curved to form stops to prevent endwise movement of the blade, said curved portions being also bent toward each other to frictionally engage the adjacent edges of the blade holder. l

9. A safety razor comprising a substantially fiat blade holder, an elongated clamp- 1ng member adapted to secure a tlat blade against one side of the latter and having arms at its ends pivotally supported in said blade holder, and said arms forming stops to prevent endwise movement of the blade, and push pieces whereby the clamp may be displaced.

10. A safety razor comprisin a blade holder having a rearwardly pro]ecting tapered socket the axis of which is in a plane parallel with the blade holder and at right angles to the longitudinal axis thereof, a handle having a taper pintle projecting from one end atan angle thereto and formed to lit said socket, the pintle having at its smaller end a screw threaded portion which projects from the smaller end of the socket, a nut engaged with said threaded portion,

and a spring washer interposed between the nut and the socket, and adapted to press the tapered surface of the pintle against the tapered surface of the socket, and maintain a constantfrictional resistance to a turning movement of the blade holderrelative to the handle, the nut permitting said resistance to-be adjusted.

In testimony whereof I have alixed my signature, in presence lof two witnesses.

HANS CHRISTIANSEN.

Witnesses:

Y A. W. HARRISON,

P. W. PEzzE'rrI.

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