US3003234A

US3003234A - Safety razor

Info

Publication number: US3003234A
Application number: US28712A
Authority: US
Inventors: Leslie F Burch
Original assignee: Individual
Current assignee: Individual
Priority date: 1960-05-12
Filing date: 1960-05-12
Publication date: 1961-10-10
Anticipated expiration: 1978-10-10

Description

L. F. BURCH SAFETY RAZOR Oct. 10, 1961 Oct. 10, 1961 L. F. BuRcH 3,003,234

SAFETY RAZOR Filed May l2, 1960 2 Sheets-Sheet 2 l'llig;

l1 IO INVENTOR.

LESLIE F. BURCH BY a# ATTORNEYS United States Patent O 3,003,234 SAFETY RAZOR Leslie F. Burch, 11.73% S. Norton, Los Angeles 19, Calif. Filed May 12, 1960, Ser. No. 28,712 2 Claims. (Cl. 30-63) The present invention relates to improvements in a safety razor and it consists in the combinations, constructions, and arrangements hereinafter described and claimed.

An object of my invention is to provide a safety razor in which novel means is provided for preventing the soap and other material removed from the face by the razor blade during the shaving operation from clogging the cutting edge of the blade.

A further object of my invention is to provide a device of the type described in which the razor blade is formed with only one cutting edge and novel means is provided for positioning the blade `so that its cutting edge is disposed the desired distance from a face-contacting exteriorly grooved roller; whereby a ne or a coarse shaving of the face can be effected.

Still a further object of my invention is to provide a device of the type described in which the safety razor head can be readily removed from the guard and bladesupporting member to permit the changing of blades when desired.

'I'he safety razor is simple in construction and is durable and efficient for the purpose intended.

Other objects and advantages will appear as the specification continues and the novel features will be set forth in the claims hereunto appended.

Drawings For a better understanding of my invention, reference should be had to the accompanying drawings, forming part of this specification, in which:

FIGURE l is a vertical section through the safety razor shown on a scale of about twice the normal size;

FIGURE 2 is a section taken along the line II-II of FIGURE l, and shows a view at right angles to that shown in FIGURE l;

FIGURE 3 is a top plan view of FIGURE l, and shows the safety razor at twice its normal size;

FIGURE 4 is a front elevation of the safety razor shown about twice the normal size;

FIGURE 5 is a horizontal section taken along the line V-V of FIGURE 2; and

FIGURE 6 is a plan view of the safety razor blade shown twice its normal size.

While I have shown only the preferred form of my invention, it should be understood that various changes or modications may be made within the scope of the annexed claims without departing from the spirit thereof.

Detailed description In carrying out my invention I provide a substantially rectangularly-shaped guard and blade-supporting member indicated generally at A in FIGURES l and 2. A top plan view of the guard member is shown in FIG- URE 5. In FIGURE 2, the upper surface 1 of the guard member A, is shown preferably hat so as to provide a supporting surface for a safety razor blade B.

The guard member A, is provided with a central slot 2, see FIGURE 5, and one end of an anchor sleeve C, is slidably received in the slot. Both FIGURES l and 2 show the anchor sleeve as being provided with an annular flange 3, and the slot 2 in the guard A, has a shoulder 2a, against which the flange bears. The portion of the anchor sleeve C, that depends below the undersurface of the guard member A, is threaded as at 3. A clamping nut D is threaded onto the threaded ice portion of the anchor sleeve C, and after the sleeve has been movedalong the slot 2 into the desired position, for a purpose hereinafter described, the clamping nut D, can be tightened against the underside of the guard member A, for rigidly securing the anchor sleeve C, in place with respect to the guard member A.

An inner sleeve E, has one end rotatably mounted in the anchor sleeve C, as shown in FIGURES l and 2, and the inner sleeve has an annular flange 4, that isV rotatably received in an annular groove 5, provided in the cylindrical bore of the anchor sleeve C. This construction permits the inner sleeve E, t0 rotate Within the anchor sleeve C, while preventing relative longitudinal movement between the two sleeves. The portion of the inner sleeve E, that is rotatably received within the cylindrical bore of the anchor sleeve C, is internally threaded at 6 for a purpose now to be described.

A blade-centering and clamping head F, is shown in section in FIGURES l and 2, and in FIGURE 3, the top plan view of the head shows that it is substantially rectangular in shape. The head preferably has a flat under surface for contacting with the adjacent surface of the safety razor blade B. The head F, also has a central threaded shank 7, that may be screwed into the threaded portion 6, of the inner sleeve E, when the latter is rotated for moving the head F, toward the guard member A. The elongated inner sleeve E has a handle 8 formed at its free end so that the sleeve may be rotated by manually turning the handle. An outer sleeve G, has a threaded end `8 for receiving the exposed threaded portion of the anchor sleeve C. The other end of the outer sleeve G, rides on an annular shoulder 9, provided adjacent to the handle S. The outer sleeve G, constitutes the hand grip portion for the safety razor and it may be tightened against the clamping nut D, for acting as a lock nut therefor.

The safety razor blade B, see FIGURE 6, has a central recess 10, extending inwardly from an unsharpened rear edge 11, of the blade. The edge 11, parallels the sharpened cutting edge 12, of the blade. In addition the single cutting edge blade B, has a pair of blade-centering pin-receiving openings 13-13, one being disposed on each side of the recess 10, and substantially midway between the front and

back edges

12 and 11, of the blade. The head F, has two blade-aligning pins 1'4-14 that depend from the undersurface of the head and are designed to enter the blade openings 13-13 and then be received in two slots 15-15, provided in the guard member A, one slot 15 being disposed on each side of the central slot 2, and paralleling this slot.

The safety razor blade B, is shaped to be quickly assembled on the pins 15-15 and to this end the blade has the recess 10, that receives the central threaded shank 7 made of a predetermined depth so that the inner edge of the recess will strike the shank when the blade is moved laterally into place. When the inner end of the blade recess 10, strikes the shank 7, the operator can then use the shank as a pivot and swing the blade for aligning the blade openings 13-13 with the pins 14-14, whereupon the blade may be moved toward the head F, for causing the pins to enter the blade openings. This operation may be accomplished while the head F, is entirely freed from the guard member A, or the handle 8 may be rotated for rotating the inner sleeve E, for spacing the head from the guard member slightly more than shown in FIGURE 2. This will space the pins 14 from the guard A, a distance sucient to permit the blade B to be removed from the head and cleaned and then reassembled in the safety razor or a new blade substituted for the old one. The head F, has its ends provided with recesses 16 which will expose the ends of the blade B, see FIGURE 3. This permits the operator 3 toY grasp the ends of the blade when removing it from the head.

It will also be noted from FIGURESI, 2 and 3, that the head F, has four flanges 17 disposed at the four corners of the head and designed to aid in positioning the bladeV B, properly with respect to the guard member A, 'when the head is moved into blade-clamping position. The anges 17, depend from the head F, and will contact with the ends of the guard member A as the head is moved into place.

I provide novel means for preventing soap and other material scraped from the face by blade BAfrom clogging Vthe cutting edge V12 of the blade. FIGURE 5, shows the guard member A, provided with two ears 1-8, disposed at the ends of the guard and underlying the cutting edge of thewblade. FIGURES 2 and 4 show the ears 18 supporting a rod 19, that has its ends mounted in the ears 18. The ears 1S are provided with bores for receiving the ends of the rod 19 and one -of the bores is threaded for receiving a threaded portion of the rod.

A roller H is rotatably mounted on the rod 19and it extends between the inner surfaces of the ears 18. VThe outer surface of the roller H is provided with a plurality of annular grooves 20, see FIGURE 5, and I preferably provide 32 grooves to the inch although I do not wish to be conned to this exact number. When the razor is used for shaving purposes, the grooved roller H will contact with the face or other surface being shaved and will be rotated in a clockwise direction when looking at FIG- URE 2, assuming that the razor is being moved downrwardly in this figure. The outer surface of the roller is spaced a slight distance from the undersurface of the blade when the blade is clamped in position and, therefore, a rotation of the roller H in a clockwise direction when looking at FIGURE 2 will cause any soap and other material that has been removed from the face by the blade, to be carried through the space between the roller and the blade. The outer surface of the roller is also spaced a slight distance from the body of the guard member A and, therefore, the roller will convey away all material that would normally collect adjacent to the cutting edge tooth blade and the guard and clog the cutting edge. Since the roller will convey raway the material removed by the blade cuttingedge, there is no chance for the clogging ofthe blade.

A second rod 21 has its ends carried by the ears 18, see FIGURES 2 and 4, and this rod `is disposed close to the outer surface of the cylinder so as to act as a cleaning member and to'remove any material from the outer surface of the roller as the latter revolves. In this Way a cleaned surface of the roller ispres'ented to the surface of the face as the safety razor is moved through its shaving stroke.

I also provide novel means for adjusting the position of the cutting edge l2 of the blade B with respect to the roller H so as to cause tine 'safety razor to provide a coarse shave or a fine shave. To this end the guard member A is provided with the slots 2 and 15. The upper surface 1 of the guard member A is provided with a plurality of ne teeth 22, see FIGURES 2 and 5. These teeth parallel one another and are disposed adjacent t0 the rear edge Z3 vof the guard member. The undersurface of the razor head F has a single tine tooth 24 that parallels the rear edge of the -head and is positioned behind the rear edge of the blade when the blade is mounted in position. The single 'tooth 24 on the undersurface of the head F is preferably Vas long as -the length of the head and this ytooth will engage with one of the plurality of teeth 22 on the surface r1 ofthe guard member A when the head is clamped `into blade clamping position. The single tooth 24 has a thickness greater than the thickness of the razor blade so that the* tooth can be received in any one of the desired teeth 22 when the head F is moved into clampingposition.

I propose to make the central slot 2 inthe guard membei' A and the Vside slots 15 of a sufcient length which will permit the blade B to be adjusted laterally with respect to the guard member through a dist-ance of approximately '0716 of an inch. In FIGURE 2 the cutting edge, 12 of the blade B is shown substantially i'nfits mid position and the cutting edge will be disposed "substantially vertically above the axis roller H. If the operator wishes a different kind of a shave either coarser or finer, he can loosen the outer sleeve G a few turns so as to free the clamping nut D. The clamping nut may now be 'loosened a few turns so as to free the anchor sleeve C and permit it to slide 'in the slot 2 into the desired position. Of course the handle 8 Vhas' been previously rotated a few turns so as to move the head F away from the guard member A as shown in Y FIGURE 2. This will free the tooth 24 from its previous registration with the central tooth in the plurality of teeth 22. The operator in moving the anchor sleeve `C along the slot 2 will also move the head F and its single tooth 24 with respect to the teeth 22 on the guard member A. vWhen the desired position has been reached, the operator tightens the clamping nut D to rigidly secure the anchor sleeve C to the guard memberA. The outer sleeve G is then rotated against the clamping nut. to secure it in a place. The handle 8 is now rotated for moving the head F toward the guard member A and this will cause the tooth '24 on the undersurface of the head to engage with the desired tooth 22 on the guard member A. In this relatively simple manner the operator is able to adjust the cutting edge 12 with respect to the roller H and cause the razor to make a close shave or a coarse shave.

The parts can be disassembled after the shaver has been used so that the safety razor can be cleaned. If desired, the head F can beV entirely removed from the guard A for washing purposes or it can kbe freed Yfrom its blade clamping position as shownrin FIGURE 2 for the purpose of cleaning the safety razor.l The tine teeth 22 on the guard Ymember A, do not projectabove the surface Y1 of the member. Therefore the teeth 22 will -not interfere with `any lateral adjustment of the razor blade B, on the top of the guard member A.

I claim: Y f

l. A safety razor comprising a substantially rectangularly-shape'd guard land blade-supporting member having a central slot that extends at right angles to the longer parallel sides of the guard; an anchor sleeve having one end slidably received in the central slot, said sleeve extending substantially perpendicularly to the plane of the guard; cooperating means on said guard member and anchor Vsleeve for connecting the two together while permitting sliding movement of the anchor'sleeve in the slot; the portion of the anchor sleeve depending below the guard member beingy exteriorly threaded; a clamping nut received on said threaded portion of the anchor sleeve and being rotatable for clamping the anchor sleeve rigidly to the guard after said sleeve has been moved into the desired position along the central slot; a blade-centering and clamping head, substantially rectangular in'shape and having a centralV threaded shank; an inner sleeve having one end internally threaded and rotatably mounted in the anchor sleeve and'being held from longitudinal movement with respect to said anchor sleeve; the threaded portion of the inner sleeve removably receiving the central threaded 'shank of said head for clamping the head to the guard member for clamping a razor blade therebetween; a razor blade mounted between the head and guard member and having a cutting edge projecting beyond the adjacent 'edges of the Vhead 'and guard; said head having another edge paralleling the one disposed near the blade cutting edge and being disposed `on the opposite side of the -central threaded shank and extending beyond the edge of the blade paralleli'n'g the cutting edge; and markings on the surface of the guard member disposed closest to the lastmentioned edge of the head; whereby lthe clamping nut may be loosened and the guard member adjusted with respect to the head for bringing the desired marking into registration with the adjacent edge of the head for projecting the blade cutting edge the desired distance beyond the adjacent guard member, whereupon the clamping nut may be tightened and the inner sleeve rotated for clamping the blade in the desired position between the guard member and the head.

2. The combination as set forth in claim l; and in which said guard member has two -additional slots paralleling the central slot and being disposed on each side thereof; said head having blade-aligning pins receivable in openings provided in the blade and also being slidably received in said two additional slots; and flanges carried by the head and adapted to contact both ends of the guard member for aligning the head with the guard as the inner sleeve is rotated for clamping the head to the guard; said flanges also aiding in positioning the blade properly with respect to the head and guard.

References Cited in the file of this patent UNITED STATES PATENTS 1,773,614 Dalkowitz Aug. 19, 1930 1,825,335 Connolly Sept. 29, 1931 2,038,230 McWilliams Apr. 21, 1936 2,101,737 Gesler Dec. 7, 1937 2,532,714 Grunn Dec. 5, 195o 2,848,807 Shnitzler et al Aug. 26, 1958