US1886689A - Safety razor - Google Patents

Description

Nov. 8, 1932. B. G. JANSSON 1,886,689

SAFETY RAZOR Filed May 16, 1929 i so I Patented Nov. 8, 1932 I UNITED STAT tsetse BENNETT s. JANssoN, or KITTERY, MAINE, AssIG oa, BY rms'NE ASSIGNMENTS, T

EMERSON APPARATUS COMPANY, OF MELROSEv CORPORATION OF RHODE ISLAND Application filed May 16',

and making the razor easier to clean and more convenient to use. The invention also aims to devise an improved blade construction. While the invention is especially concerned with the earlier razor construction above re ferred to, it will be understood thatsome of its features can be used in razors of a different type. V I

The nature of the invention will be readily A understood from the following description when read in connection with the accompanying drawing, and the novel features will be particularly pointed out in the appended claims.

In the drawing, I

Figure 1 is a rear view of a razor embodying the invention; r

r Fig. 2 is a perspective view of the razor on a larger scale;

Fig. 3 is a sectional view on substantially the line 33, Fig. 1; and 7 Figs. .4 and 5 are sectional views on approximately the lines 44 and 5-5, respectively, Fig. 3.

1 The construction shown comprises a blade holder which includes a head 2 and a cooperating blade clamping member or cap 3. The head has a blade supporting face 4 and a. guard 5 which preferably consists of a series of round ended teeth integral with the head, the upper surfaces of these teeth being grooved as shown at 6. The holder is designed to support a blade 7 in substantially the position shown in the drawing HIGHLANDS, MASSACHUSETTS, A

SAFETY RAZOR v 1929. Serial l\T0. 3'63,579.

where it is clamped on the face 4 by the cap l member 3. V I

In order to permit the clamping or releasing of the blade the head 2 and clamping member 3 are provided at the rearward side of the holder with interengaging hinge lugs, those on the part Sbeing shown at 8, while those on the head 2 are indicated at 9. A pivot pin 10 extends through the'entire series of lugs and operatively connects the parts 2 and 3 together.

The handle for the razor comprises ashank portion '12 andfa grip'13.- Preferably the shank is split as clearly shown in the drawing and its lower end is screw threaded, as

indicated in Fig. 3,.into the upper end of the grip portion 13, while the split members of the shank are spread apart at their upper ends and secured to, or formed integral with, two of the lugs 9 of the head 2. The grip portion of the handle may be made either of metal or of some suitable non-metallic substance such as .bakelite, celluloid, or the like.

In order to move the clamping member 3' toward and from its blade clamping position, one end of a spring arm 14 is secured in the member 3, this arm also passing through the pivot pin-10, and the greater portion of i the arm, when in its normal position, extends along the handle as shown in Fig. 3. The lower extremityof this arm projects into a recess 15 formed in the handle at approximately the junction of the shank and grip,

and it is 'rele'a'sably locked'in this position by a keeper 16 which is rotatably mounted on the shank portion of the handle. A slot 17 Figs. 2 and 4, formed in the'keeper permits the passage of the end of the arm 14 into or out of the recess 15. Rotation of the keeper is facilitated by providing it with a knurled circumferential flange a.

It'will be clear from an inspection of the drawings that the slot provided in the holder to receive theblade 7 is relatively thin and narrow, and that the arm 14 extends through the rearward part of this slot or socket. It will also be observed that the blade 7 is provided with a notch Z), Fig. 2, to receive this part of the arm 14, the notch and arm serving to center the blade in the holder, as clearly shown in Fig. 5, and to prevent any endwise movement of the blade. The sharpened or cutting edge of the blade overlies the groove 6, as shown in Fig. 3, and the fingers 5 cooperate with this edge, in the usual inanner. There is, however, some danger of being cut by the corners of the blade, and for this reason the two endmost fingers 5 are extended upwardly beyond the others, as clearly shown in the drawings, to form stops for the blade. The corners of the blade at the cutting edge bear against these two stops when the blade is in its operative or shaving position.

Preferably the blade is made of relatively thin steel'and'of approximately rectangular form, but is very narrow in proportion to its length, since this shape economizes material and simplifies manufacturing operations. For example, the blade may he, say, one and one-half inches. in length and one-quarter inch, or even less, in width. The blade is sharpened on one of its long edges and notched centrally at its opposite edge to take the rod 14. This notch in the rearward edge of the blade is of advantage not only in centering it but also is useful in indicating to a user which edge is sharpened and therefore preventing the placing of the blade in the holder in a reversed position.

In order to release the blade from the holder the grip 13 of the handle usually is held in the right hand and the keeper 16 is turned or rotated far enough to release the arm 14, allowing itto move into approximately the position shown in Fig. 2. The arm prefer ably is made of spring metal so that it will fly away from the handle immedately upon being released. This opens the holder. A blade held at its ends between the thumb and forefinger then is placed in the holder, the latter being held in approximately a horizontal position at this time so that the back edge of the blade drops into the angle between the parts 2 and 3. The thumb and forefinger which hold the blade naturally are brought against opposite ends of the holder so that they center the blade and register the notch 12 with the rod 14. By ressing on I the rod with the thumb of the left hand, its

free end may be swung into the notch 15 and the keeper 16 then is turned with the right hand to lock the rod securely but releasably to the handle. A'groove 18, Figs. 3 and 4, is formed in the keeper opposite to the slot 17, and the rod 14 snaps into this groove when the keeper has been given approximately half a revolution. These parts thus cooperate to prevent any accidental unlocking of the arm. The swinging of the member 3 into its blade clamping position by the movement of the arm just described advances the blade until it strikes the stops 5 and finally secures the blade firmly in the holder. Preferably the blade engaging faces of the parts is even more convenlent to use, is exceptionallyeasy to clean, and in which the manufacturing operations have been simplified.

t will be observed that the arm 141 1 the pivot pin 10 centered in the holderk'and thus avoids the necessity for any heading of the pin. Also, since the clamping pressure applied to the blade through the member 3 is of a yielding nature, due to the resiliency of the arm 14, any variations in thickness of the blade are automatically-compensated for. Because the blade is very narrow the over-all width of the holder. can be reduced,

which is a convenience in shaving around the nose. The location of the pivot pin 10 under the rearward edge of the blade also is of advantage in reducing the over-all width of the holder.

While I have herein shown and described 4 a preferred embodiment of my invention, it will be understood that the invention may be embodied in other forms without depart ing from the spirit or scope thereof.

Having thus described my invention, what a I desire to claim as new is: 1'. In a safety razor, the combination of a blade holder comprising a head having a blade supporting face and a cap pivoted thereto for clamping said blade on said face, a handle connected with said head, an arm extending from said cap for moving'said cap into and out of blade clamping relationship to said head, said arm having a portion extending along the handle and said handle having a recess to receive the end portion of said arm, and a keeper embracing said handle and held against substantial movement axially of the handle but mounted thereon to turn about the axis of the handleto lock said arm in its blade clamping positionand 'to unlock the same. i j

2. In a safety razor, the combination of a blade holder comprising a head having a blade supporting face and a cap pivoted thereto for clamping said blade on said face, a handle comprising agrip portion and a forked shank portion extending from "the grip, the ends of the fork members being securedto said head, an arm connected torecess.

BENNETT G, JANSSON.

and a keep

Images