US2757449A

US2757449A - Continuous-blade razor

Info

Publication number: US2757449A
Application number: US312026A
Authority: US
Inventors: Abajian Aram Christian
Original assignee: Individual
Current assignee: Individual
Priority date: 1952-09-29
Filing date: 1952-09-29
Publication date: 1956-08-07
Anticipated expiration: 1973-08-07

Description

7,, 9 A. c. ABAJHAN CONTINUOUS-BLADE RAZOR Filed Sept. 29, 1952 INVENTOR. M/PMM K. #fiww/mn ATTORNEY United. States Patent This invention relates to a continuous-blade razor;

that is to a razor of the type wherein the blade is in the form of a flexible strip of metal which may be unrolled little by little for use in a position where it is exposed for use, and may be rolled up as it is used.

It is an object of this invention to provide a device of the character described which will be neat, compact, and convenient to use, which will be of extreme simplicity, which will have few parts, and which will be inexpensive to manufacture, so that, if desired, it may be discarded after the entire strip has been used up.

One aspect of the invention lies in providing a device in which the supply and take-up portions of the strip may be carried in concentric rolls, and in which the feeding may be simply but eifectively operated.

Another aspect lies in providing a device of the character described in which the cutting edge of the blade,

strip is protected from damage to the cutting edge while it is being fed to cutting position.

Another aspect lies in providing a device in which the supply and take-up are concentric about a single axis, in which nevertheless, the supply reel will not overrun, during the feeding operation, no matter what the relative sizes of the supply and take-up rolls may be.

The invention accordingly comprises the device recited in the accompanying claim, a practical embodiment of which is shown in the accompanying drawings; in which:

Figure 1 is a perspective view of a razor embodying this invention;

Fig. 2 is in part a front elevation thereof and in part a section along the lines 2--2 of Fig. 1;

Fig. 3 is a vertical central section thereof along the lines 3-3 of Fig. 1;

Fig. 4 is a top view as the device is seen in Fig. 1; and,

Fig. 5 is an enlarged fragmentary section thru the cutting portion of the razor.

The device comprises primarily a case enclosing a roll 11 of a thin metal strip 12 having one edge 13 sharpened for shaving. This strip is drawn from a supply roll 11 thru guides 14 into a supporting slot 15 which exposes the cutting edge. From the slot 15, it passes to a take-up roll 16 which is concentric with the supply roll 11 The case, in the present instance, is semi-cylindrical,

coaxial with the rolls of strip, at its lowerportion, but its upper portion has roughly the shape of a rectangular box the sides of which merge tangentially with the curved surface of the semi-cylindrical portion. This rectangular portion has its front face curved back toward the top, so as to expose the cutting edge of the strip for shaving as it lies within the slot 15.

Coaxial with the semi-cylindrical portion, there is journalled within it a reel 17 having a handle 18 by which it may be turned. This reel is divided into two portions 20 and 21 by a central flange 19. The rear portions 20 passes thru the center of the roll 11, so that the latter may revolve freely around it; while the for- 2,757,449 Patented Aug. 7, 1956 ice ward end of the strip 12 is firmly attached to the front portion 21 so that, as the reel is rotated, the strip is wound upon the take-up roll 16 and is thus drawn thru the guides 14 from the supply roll 11.

The strip, as it moves from one roll to the cutting position and then to the take-up roll, must be moved edgewise. This is accomplished by making the guide 14 in the form of a ramp which gradually pushes the strip over into the plane of the supporting slot and after it leaves the slot moves it over to the plane of the takeup roll. To facilitate this movement, the slot 15 itself may, if desired, be cut somewhat at an angle to the plane of the supply roll 11.

The slot 15 supports the strip firmly from both top and bottom faces, at the non-cutting edge, as seen in Fig. 5, but the upper wall of the slot terminates short of the cutting edge as shown at 22, while the lower wall is recessed away from the blade as shown at 23 to receive the material shaved from the face.

Fingers 26 extend up to meet and support the lower face of the blade at frequent intervals along the recess, to help in shaving. The exact shape of the guides leading from the supply roll and to the take-up roll, will depend in part on the cross-sectional dimensions of the strip forming the roll. Also the shape of the fingers 26 will be determined by the extent by which the strip protrudes from the slot and by the angle of the bevelling which produces the cutting edges. Such knowledge is common in the art.

In using the device, it is grasped in the hand and cutting edge passed over the face in the usual manner. When it is desired to renew the cutting edge this may be accomplished by simply twisting the handle 18 to bring a new portion of the strip into position. At the beginning, with a new razor, the supply roll will be large and the take-up roll will be small. During this time the roll 11 will turn much slower than the take-up. This is easily possible, however, because the supply roll 11 is loose on the reel. There is no tendency for the supply reel to unwind too much, however, since it is confined by the walls of the case 10.

The case 10 is conveniently made in two separate parts as shown in Fig. 2, a body portion 27 containing the I guides and the back journal for the reel, and a cover portion 28 which contains the front journal, and preferably provides at least a portion of the lower wall of the slot. This cover is put on after the strip is in place, at which time it may be snapped or cemented or otherwise fastened in place.

The case is preferably made of a transparent plastic, so that the user may determine how much of the blade is available. The blade itself may be made of a stainless steel, marked with suitable indicia to indicate the various blade sections to be used. This may take the form of numeral or section marks on the blade strip.

Since certain changes may be made in the above article and different embodiments of the invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawing shall be interpreted as illustrative and not in a limiting sense.

I claim:

A razor comprising an elongated case having a slot at one end of said case extending generally perpendicularly to the sides thereof, a reel journaled within said case about an axis substantially parallel to said perpendicular direction, a flexible cutting strip having a sharpened edge and wound in a coil concentric with said reel, said strip passing thru said slot and having one end attached to the reel in front of said first-mentioned coil whereby on rotating said reel said strip is drawn from said coil thru said slot and wound on said reel, means within said case References Cited in the file of this patent UNITED STATES PATENTS 1,682,794 Moore Sept. 4, 1928 Jones et a1. Dee.

' Graef Dec.

FOREIGN PATENTS Great Britain Apr.

France Oct.