US2561575A - Continuous strip magazine razor - Google Patents

Description

July 24, 1951 e. a. JENSEN 2,561,575

CONTINUOUS STRIP MAGAZINE RAZOR Filed April 24, 1947 2 Sheets-Sheet l v INVENTOR ATTORNEYS y 24, 1951 G. BJJENSEN 2,561,575

' CONTINUOUS STRIP MAGAZINE RAZOR Filed April 24, 1947 2 Sheets-Sheet 2 l INVENTOR t Guszav B dwse 1 J6 J0 BY J0 wdmw ATTORNEYS Patented July 24, 1951 UNITED S TATES PATENT OFF g 2,561,575 Q i ooN-rmooos STRIP MAGAZINE. Razors.

Gustav B. Jensen, N'ewYork, N. Y.

Application April 24, 1947-,serial-Na 743.516

This invention relates to safety razors, and more particularly to continuous strip safety razors of the magazine type wherein a. continuous strip blade providing the equivalent of ma y individualblades is enclosed in a unitary expendable magazine which is readily insel'table in and'removable from a razor frame. The blade of the razor of the present invention is wound upon supply and takeup spools within the magazine, which encloses the blade completely except for the length thereof in. use and provides protection both to the blade and to the user thereof. The magazine is designed to be permanently assembled together upon manufacture with the blade therein, so that when the whole length of the blade in the magazine has been used the magazine is to be discarded.

An'object or the present invention i to provide a razor employing a continuous strip blade in Whichthe blade will be substantially enclosed in a magazine removably insertable in the razor, so as to obviate all need? for handling of the blade by the user.

Another object of the present invention i to provide a razor in which the cutting member is enclosed within a disposable magazine containing the equivalent of a largenumber of the common single or double-edged blades.

My invention will be better understood from an examination of the following detailed description taken in conjunction with the accompanying drawings in which:

Fig. l is a perspective view of a razor embodying the principles of the present invention;

Fig. 2' is a perspective view of the razorframe with its cover lifted exposing the magazine mounted" therein and showing the engagement of the portion of the blade in position for use witha support and guard therefor forming part of the razor frame;

Fig. 3 is a perspective view of the magazine removed from the razor frame;

Fig. 4 shows] the interior of the magazine with a strip blade wound upon supply and take-up spools and passing over guides which stretch and position it for engagement with the support and guard of the razor frame;

Fig. 5 is a view of the interior of the razor frame with the magazine removed, exposing the driving mechanism by which the continuous strip blade is advanced; p

' Fig. 6 is a lengthwise sectional view of the assembled razor, taken along line 6-6 of Fig. 1 but showing the razor in inverted position, as it would be held in use; and

2 Claims. (Cl. Ell-40),

Fig. 7 is a cross section. of the assembled razor, taken along line 1-1 of. Fig. 6, also showing the razor in inverted position.

Referring to .Fig. 1, the. razor of the; present invention. when seen from the exterior presents a frame 4 to'which is hinged a cover 5... A strip:

blade shown at 10 in position for use is supported within a guard 6 extending between a pair of jaws 1 extending from and. forming part. of the frame 4.

The guard. d, shown in cross section in Fig. 6, is formed with a slot 2| just wide enough to accommodate the blade l0 and has a depth of some. three-quarters of the width of the blade. The blade I0 fits snugly within the slot 21, and abuts against the. bottom thereof. Front and rear lips 22 and 23 on the guard provide for proper exposure of the blade while preventing its. contact with. the. users, skin except in a position nearly parallel thereto.

Referring again to Fig. 1, suitable clasping means are provided, to retain the cover 5 closed with the frame 4. The. frame 4 and cover 5 are formed with. a recess 8v behind'the jaws 1,. but closure between the frame and cover is; complete along the edge of the cover. A razor so. constructed may be roughly 3 3 2" x and is readily grasped in. the users hand.

Fig. 2 shows the interior of the razor frame 4' with the cover 5 thereof opened. A magazine 3.0 contain the continuous strip blade and sub stantially fills the interior of the razor frame, ex cept. for a space below the magazine occupied by the driving mechanism which advances the blade.

The strip blade, which is wound upon supply. and

take-up spools within the magazine, passes in its progres from one to the other of these spools over a pair of projecting guides 34 formed in the magazine, and in its passage between these guides engages the guard 6. The magazine may be accurately located in the frame 4 by means of bosses projecting. fromthe. frame, so that the portion of the blade in use in. the guard twill be supported by the guard alone, free of stresses imposed by the. magazine except for a stretching between the guides 34. A driving wheel 65, which rotates the take-up spool, projects up through an aperture 39 through the magazine, as described below.

Fig. 3 is. a perspective view of the magazine 39 removed from the razor. The magazine is formed of upper and lower stampings 3i. and 32 joined.

by conventional means, such as detents- The height between the faces of the stampings 3 l and 32 is sufficient to accommodate the blade which.

is wound on the supply and take-up spools enclosed between the stampings. The strip blade 1 may be observed stretched across the guides 34 and entering the magazine through a slotted opening 33 from which it passes tothe take-up spool. The blade coming from the supply spool emerges from a complementary slotted opening (not shown) on the other side of the magazine in order to pass over the guides.

Two cylindrical apertures 35 and 39 are shown extending "through the magazine. These apertures form the centers about which the supply and take-up spools rotate. Flanges 33 extend into v I these apertures from the upper and lower stampings, so as to provide cylindrical surfaces on which the supply and take-up spools may ride. The supply and take-up spools, numbered 56 and respectively, may be seen between the opposite flanges 38 of the apertures 35 and 39. An annular projection 53 on the take-up spool 5| extends radially inward from the cylindrical surracedefined by the flanges 38 which carry the take-up spool. This annular projection 53 is slotted at diametrically opposite points 54 for engagement with the driving wheel of the razor frame which serves to advance the continuous At these openings the side 31 is cut back from the bottom 36 and bent inwardly to provide, in conjunction with the guides 34 which likewise consist of curved portions of the side 31, a smooth bearing surface for the-blade In in its motion from the supply to the take-up spool. When the magazine is first placed into use the entire length of the blade l0, except that necessary to be threaded across the guides 34 of the magazine and around to the take-up spool 5|, is coiled on the supply spool 59. As the section of blade stretched in the guard 6 of the razor frame "4 between the guides 34 becomes dulled, a fresh length of the blade is drawn into position between the guides by rotation of the take-up spool. The supply spool and; except for a projection required for driving it, the take-up spool also may be made in the form of simple cylinders. Retaining flanges thereon are unnecessary since the stampings 3i and 32 which form the top and bottom of the magazine prevent movement of the blade axially of the spools. The supply spool 53 thus consists of a simple cylinder frictionally retained on flanges 33 of which the lower flange belonging to the lower stamping 32 is shown in Fig. 4. The supply spool fits snugly on these flanges so as to prevent slackening oi the blade between the guides 3-? where it engages the guard G. The blade Ill is sharpened along its edge and is preserved from damaging contact with the upper stamping 3I by suspen j sion in an oil bath.

The driving mechanism which advances the blade to. provide a fresh section thereof in the guard is shown in Figs. 5 and 6. Aifixed to the inside'of the frame 4- shown in Fig. 5 is gear plunger Bl] includes two longitudinal members GI and 62 fitting into guide rails 63 aflixed to the inside of the frame. One longitudinal member 62 carries teeth forming a rack 61 which engage a gear 64 journaled in the frame between the longitudinal members. A one-way clutch is provided between the gear 64 and the wheel 65, which is concentric therewith, so that the wheel 65 rotates only when the gear 64 is driven counterclockwise as the plunger Bil is pushed back into the frame after being drawn out. The one-way clutch may consist of a ratchet wheel 10 aflixed to a shaft i l which is journaled in the driving Wheel 65. This construction is best seen in Fig. 6. The shaft II has a square end 12 which engages a square hole in the gear 64. A pawl 13, mounted in the driving wheel 65, constrains the driving wheel to turn with the ratchet wheel and gear when the latter turns counterclockwise under the influence of the rack 61 and plungerfill.

While I have disclosed my invention by reference to a specific embodiment, it is intended to be illustrative of the principles thereof only.. It will be understood that 'all variations and modifica train which translates'the reciprocating motion of a hand-operated plunger til into rotary motion of a driving wheel 65. The driving wheel 85 engages the take-up spool 5! by means of keys 6G thereon which mate with the slots 54 in the annular projection of the take-up spool when the magazine is inserted into the razor frame. The

tiohs falling within the true scope of my invention are intended to be included within the scope of the appended claims.

I claim:

1. A blade magazine for a razor employing a continuous strip blade, said magazine comprising upper and lower casings forming 'a'closed fiat box having a substantially rectangular shape of greater length than breadth, a pair of jaws extending one from either side of one end of the magazine in a direction generally parallel to the long dimension of the magazine, two circular apertures in each of said casings disposed one behind the other along the long dimension of the magazine, the apertures in one casing being respectively coaxial with the apertures in theoth'er casing,- inwardly extending flanges on the said apertures, a-supply spool journaled on the flanges of the apertures adjacent the said jaws, a takeup spool journaled on the flanges of the apertures remote from the said jaws, an annular ring on the said'take-up spool adapted to provide positive engagement with driving mechanism externalto the magazine, slotted apertures in the said jaws, and a continuous's'trip blade wound upon the supply and take-up spools and led from the supply to the take-up spool outside the magazine through one of the said slotted apertures, between the jaws, and through the other of the said slotted apertures back into the magazine and onto the take-up spool. I

2. A continuous strip razor comprising aframe formed of asubstantially rectangular fiatjbox with projecting jaws at one end thereof and a slotted'blade support and guard extending therebetween to accommodate externally of the box a section of a continuous strip blade, a magazine for the blade formed of a substantially rectangular flat box possessing substantially the same proportions as the razor frame except for the slotted blade support and guard and adapted to fit with-. in' the frame, the said magazine accommodating supply and take-up spools therein one behind theother in the sense of the long dimension of the frame, acontinuous strip blade coiled on the supply and take up spools within the magazine and passing from one to the other of the said spools externally of the magazine over the jaws thereof, and means to, advance the blade ,by a known and substantially constant amount includ ing a spool-engaging member affixed to the in up spool upon insertion of the magazine into the frame, a gear affixed to the frame concentrically with the said spool-engaging member, a one-way clutch arranged between the gear and the spoolengaging member and a rack arranged on the frame and engaging the said gear, whereby a single stroke of the rack rotates the take-up spool through a fixed angle and advances the blade by a. substantiall constant amount.

GUSTAV B. JENSEN.

REFERENCES CITED The following references are of record in the file of this patent:

6 UNITED STATES PATENTS Number Name Date 1,905,608 Schoenfeldt Apr. 215, 1933 1,910,430 Fougner May 23, 1933 2,026,960 Branch Jan. 7, 1936 2,053,642 Steinmetz Sept. 8, 1936 FOREIGN PATENTS Number Country Date 10 295,334 Great Britain Aug. 9, 1928 301,566 Italy Oct. 6, 1932 441,003 Great Britain Jan. 10, 1936

Images