US2705364A - Safety razor - Google Patents

Description

April 1955 E. w. GENT 2,705,364

SAFETY RAZOR Filed Dec. 8, 1951 2 Sheets-Sheet 1 wi, l9 25 w 5457 Fi s INI 'ENTOR. 4 m/e 1/. aewr M,M,WM+ 5M6 April 5, 1955 I E. w. GENT 2,705,364

SAFETY RAZOR Filed Dec. 8, 1951 2 Sheets-Sheet 2 INVENTOR. EDGAR 14 E/VT BY a M 114M" 41% SAFETY RAZOR Edgar W. Gent, Morristown, N. J.

Application December 8, 1951, Serial No. 260,621

9 Claims. (Cl. 30-40) This invention relates to a safety razor and more particularly to a safety razor with a tape blade and means for containing and dispensing the same.

This application is a continuation in part of my copending application Serial Number 162,357, filed May 16, 1950, now abandoned.

It is an object of my invention to provide a safety razor of relatively simple and economical construction employing a minimum number of parts or details of manufacture.

Another object of my invention is to provide a razor with novel means for holding a supply of tape blade of material length and which can be properly positioned in a shaving zone in said razor, and novel means for taking up the used portion of the tape.

Another object of the present invention is to provide a safety razor for containing supply and take-up means for a tape blade which extends substantially around the perimeter of the razor.

Still another object of the present invention is to provide a compact safety razor requiring a minimum number of parts to make and assemble in which the body and handle member form a one piece structure and which accommodates a magazine for a roll of razor tape and a magazine for taking up the spent or used portion of the tape.

Another object of my invention is to provide a razor of unitary construction having a spiral tape blade therein adapted to be moved across the shaving zone for providing a plurality of shaves.

A specific object of the present invention is to provide a safety razor of triangular shape in which the faces thereof have tape confining means and the base portion is longitudinally extended so as to form a surface contacting channel portion adapted to retain therein a blade having a cutting edge which can be moved to bring into shaving position, an unused section of blade.

Another object of my invention is to provide a quick and ready means whereby the used tape can be disposed of in its magazine and a magazine of new tape properly inserted and positioned without hazard to the operator.

Other objects and advantages of my invention will become apparent from the following description taken in conjunction with the accompanying drawings, in which:

Fig. 1 is a frontal face view of a preferred embodiment of my invention;

Fig. 2 is a side view of Fig. 1;

Fig. 3 is a top plan view of Fig. 2;

Fig. 4 is a fragmental, sectional view taken on line 44 of Fig. 3;

Fig. 5 is a detail taken on line 5-5 of Fig. 1, showing tolerance between blade and sides of accommodating groove;

Fig. 6 is a detail taken on line 6-6 of Fig. 1, also showing tolerance between blade and sides of accommodating groove;

Fig. 7 is a detail taken on line 7-7 of Fig. 1, showing the seating of the blade in the groove at said portion;

Fig. 8 is a detail taken on line 8-8 of Fig. 1, showing available clearance about blade;

Fig. 9 is a plan view of a spiral roll of blade tape hardened to form such a roll forming part of the in vention;

Fig. 10 is a plan view of the body or container of the magazine forming part of the invention;

United States Patent 0 Fig. 11 is a sectional view taken on line 11-11 of Fig. 10;

Fig. 12 is a top plan view of the lid or cover for the bogy or container of the magazine shown in Fig. 10; an

Fig. 13 is a sectional view taken on line 1313 of Fig. 12.

Referring now to the drawings in which similar reference numerals refer to like parts throughout, it will be noted that I provide a razor 10 having a handle 11 and a body member 12 integral with said handle. Said handle 11 is inclined with respect to the front plane 13 of the body portion to lend ease in shaving. It will be noted that said handle and body portion are integral with and relatively disposed at an angle with respect to each other. Said front plane 13 is provided with a front recess 14 provided with bayonet slots 15 for accommodating bayonet pins 16 on magazine 17 which is adapted to fit into said recess, 14.

The rear plane surface 18 is provided with a rear opening or recess 19 containing bayonet slots 20 for accommodating bayonet pins 21 of receiving or take up magazine 22 for a tape blade 23. It will be noted that the plane of said rear surface 18 is not parallel with the frame plan 13 but intersects it to the left and at an extension from the body 12 as shown in Figs. 2 and 3. The body portion 12 as shown in Fig. 1 is of substantially triangular shape with its apex 24 merging with handle 11 thus leaving the base or face contacting portion 25 extending upwardly and angularly with respect to said handle 11, as shown in Fig. 7. Said body portion, furthermore, is provided with a continuous groove or slot 26 which extends in the body from opening 14 to the right side 27 of body portion 12, then curves laterally into the groove or slot 27a in the face contacting portion then downwardly and at an incline in groove or slot 28 and obliquely into the opening 19 in the rear face. This slot accommodates the spiral roll of tape blade 23 extending from magazine 17 as shown in Fig. 6. It will be noted that the slot 26 and 28 allow for clearance of the blade 23 therein, as shown in Figs. 5, 6 and 8, while groove or slot 27a is narrow and provides a small clearance so as to keep the tensioned blade extending from roll 23 in magazine 17 in relatively flat parallel position with respect to the groove 27a in the face contacting portion as shown in Fig. 7. Such a tight fit prevents any mobility of the blade in this groove and also affords excellent shaving qualities of the blade in the body portion.

It will be noted that the face contacting portion 25 is set back from the plane 13, as shown in Fig. 2, providing a slight recess in the upper lip 29 thereof to permit extension of the cutting edge of the blade 23, as shown in Fig. 7. In other words, the lips gradually increase in height around the curves of the slots from 26 to 25 and are of the same protecting height when they join the tangent lips around the bends leading to and from the face contacting portion 29 respectively. Furthermore, as indicated in Fig. 8, there is a clearance channel open at the rear of the body portion, the clearance being sufiicient to permit warping of the tape blade as it is being taken up by the take-up magazine 22.

As to the tape blade 23, it is spiral hardened and is in the form of a tape of material length, very thin and narrow, and sharpened at one edge. Each end, however, is unsharpened to permit handling and loading in razor 10, and the entire length is hardened to form a spiral in the normal free state. Due to the initial curvature of this type of blade smaller radii can be used in the end portions of the shaving zone in the face contacting portion because there is less distortion in the blade due to its initial curvature. Also, it is to be noted that with a spirally hardened blade there is less friction drag when the blade is dispensed from the supply magazine since there is less distortion of the roll when it is in place in the magazine. When the normally curved blade is in position in the horizontal channel of the shaving zone, it exerts a flexing effort and this results in a retaining effort within the channel at the shaving zone.

Magazine 17, as shown in the drawings, includes a cup member 29 and a lid 30. The description of magazine 17 is also applicable to take-up magazine 22 because they are identical. The magazine cup 29, as shown, is provided with spaced slots 31 in circular Wall 31a which extends from the open end to the base 32. The base, as will be noted, is a plane flat surface and is provided with two diammetrically opposed bayonet pins 16 as hereinabove indicated, which are located on the outer surface and flush with the underside of the base 32. The top rim 33 of said cup 29 has a beveled lip 34 extending around the top. The lip in turn is provided with an overhang 35 which has a sharp corner with a rounded top or approach to aid in tightly snapping the cover or lid 30 thereon.

It will be noted that because of the construction of the cup 29 that the diameter of the top lip 34 is such that when spiral roll of blade 23 is inserted and the lid or cover 30 is snapped on or into final position the top of the cup 29 is reduced in diameter causing the normally cylindrical cup cubage to take on a frustum of a cone cubage. In this manner the outer surface of the roll of tape is positioned in contact with the inside of the bottom of the cup thus insuring that the blade will be free of any damage to its cutting edge and also the blade will be withdrawn or dispensed with the same relationship to the landing surface at the bottom of the channel or groove in the shaving zone so that the blade will always be properly positioned in the slot or groove 27a in the shaving zone of the face contacting portion.

In somewhat similar manner the tape at the other end of the shaving zone, when it is withdrawn by operation of magazine 22, will also be properly positioned against the bottom of the shaving channel 27a due to proper positioning of the bottom of the slot in the magazine cup Where the sharp edge of the blade is engaged with the inside surface of the bottom of the take-up magazine cup. In positioning a new blade, the cover provided with hub 30a of the take-up magazine is rotated until the slot 36 in the cover is in line with the tape slot 36a in the cup.

The tape outlet slot 36a is provided in the cup of the magazine properly located with respect to the bayonet fastenings. When magazine 22 is used in the take-up position the end of the tape can be readily inserted in the slot 36 in the cover and into the slot in the stud which is in line with the slot in the cover and forms an integral part of the cover. The razor would be supplied initially with a magazine of new blade and an empty take-up magazine having its cover snapped in final position. When this supply of blade is exhausted the take-up magazine and used blade will be removed and discarded as a unit. The empty supply magazine will be replaced by a new magazine of blade and the empty supply magazine will be put into position as a take-up magazine.

The cover or lid 30 is preferably of transparent plastic material such as Lucite to show at a glance the supply of tape available in the cup or magazine and to enable the operator to more readily insert tape into the slot of the take-up magazine.

Take-up magazine 22 can be easily operated by mere ly rotating knurled lid 30 whereupon the tape blade from roll 23 is drawn in the desired amount through the slots 26, 27, 27a and 28 into the take up magazine.

From the foregoing description of my invention taken in conjunction with the accompanying drawings, it will be noted that I provide a safety razor employing a tape blade having a minimum number of details of manufacture. The tape blade as assembled in manufacture eliminates many hazards which would be associated if the blade were to be placed into position by the user. Furthermore, after the blade is assembled, the magazine is readily sealed. The magazine is of simple construction and can be produced at relatively low cost as a moulded part.

The advantages of my invention are that a very small number of parts is needed to manufacture the same, and the safety zone channel or groove is an integral part of the body member, thereby permitting easy handling of the razor.

The blade tape is positioned by the physical characteristic of the body member coacting with the bases of the magazine. In addition, there are no hazards in handling the blade nor are there any supplemental parts required which, as heretofore, could be readily lost or mislaid.

There are also provided in my invention frictional means employed between the cover and the side cup in the magazine to provide tension and proper alignment of the tape blade in the shaving zone. The lips associated with the shaving zone are so positioned and contoured as to provide safe and easy shaving, and the clearance between channel walls and blade is reduced to a minimum to prevent any lodging of hair. Any water or soap entering the magazine is easily discharged from the slots in the cup of the magazine.

While a preferred embodiment of my invention has been described and illustrated, it is to be noted that various changes as to form, use and arrangement of parts and/or materials may be made without departing from the spirit and scope of the invention as claimed.

I claim:

1. A safety razor comprising a handle, a substantially triangular shaped body integral with the handle at an apical portion thereof and extending angularly from the handle when the razor is brought into working contact with the face, a continuous tensioned spiral roll of razor tape in the front face of the body adapted to extend along and be exposed from part of the perimeter of the body portion to permit shaving, and a take-up magazine in the rear face of the body arranged obliquely of the plane of the front face of the body for drawing said tape across said perimeter and obliquely of the front face, said magazine having an obliquely arranged slotted cup with an overlapping lip and a lid with an inwardly extending lip adapted to slide over the lip of the cup and form a compressed relatively tight fit with same.

2. A safety razor comprising a handle, a substantially polygonal shaped body member connected with the handle and extending angularly therefrom, said member having a slot adjacent the perimeter thereof and a plane face with an opening therein, a magazine in said opening, a roll of tensioned razor tape in said magazine adapted to extend along the slot and be exposed from part of the perimeter of said member to permit shaving, said body member having an oblique rear face with an opening therein, the plane of which intersects the plane face, and another magazine parallel with said other face of the member for drawing said tape across said perimeter of the member, each of said magazines having a slitted cup with an outwardly flanged lip adjustably fitted in the respective face of the body, and a lid adapted to crimp one end of the cup to form a closure therewith to position and contain the tape.

3. A safety razor comprising a handle, a member integrally connected with the handle and extending angularly therefrom having a front and a rear opening in a front and rear face respectively, a spiral roll of tensioned razor tape in said member adapted to extend along and be exposed from part of the perimeter of said member to permit shaving, a magazine for said tape parallel with and in the front face of the member for supplying said tape across said perimeter and another magazine parallel with the bottom surface. in the opening of the rear face for taking up the used tape, each of said magazines comprising a slitted cup member with an outwardly flanged lip and a rotatable lid thereon with a downwardly extending flange adapted to overlap the lip and compress the same, said lid having means for holding one end of the tape to wind the same therein.

4. A safety razor comprising holding means and a head member integral with said means having a circular opening, a supply magazine in said opening adapted to retain a roll of continuous shaving tape therein, an opening in the rear portion thereof, a take-up magazine in said last opening for receiving the tape in roll form, said head member having an exposed groove in the perimeter thereof for accommodating the tape and forming and permitting exposure of the cutting edge of the tape to form contact with the face, each of said magazine openings having bayonet slots therein, and each of the magazines having lugs for engagement with the slots, and a manually operable rotatable lid sealing the magazine having a slotted hub extending into said magazine for accommodating the roll.

5. A safety razor comprising holding means and a head member integral with said means having a circular opening in one face thereof, a supply magazine in said opening having a spiral and tensioned continuous roll of shaving tape therein, an opening in the rear portion of the member having its face in an inclined plane intersecting the plane of the first face, a take-up magazine in said rear opening for receiving the tape in roll form, said head member having an exposed groove in the perimeter thereof for accommodating the cutting edge of the tape and forming a shaving zone in contact with the face, each of said magazines having a cup adjustably fitted in the respective face of the body and lugs for engagement with the opening, and a rotatable lid adapted to crimp one end of the cup to form a seal therewith to contain the tape.

6. In combination, a safety razor having a handle and a triangular shaped head member extending at an angle greater than a right angle and having a groove at the perimeter thereof adapted to retain a shaving tape for depilating contact, an opening in the front portion thereof and a rear opening, each of said openings having bayonet slots therein and a magazine for each of said openings for a roll of continuous cutting tape, each of said magazines having a slotted cup with diametrically opposed lugs for said slots, and an overhanging peripheral lip and a rotatable lid with a downwardly extending beveled flange adapted to slide over the lip of the cup, said lid having a hub with a slot therein to retain one end of the roll of tape in the take-up magazine.

7. A safety razor adapted to hold and use a continuous shaving blade comprising a holding member, a head member extending angularly from said holding member, said head member being of substantially triangular shape whereby one of the apical portions thereof, when viewed in plan, is integral with said holding member and a face contacting base portion is disposed opposite said apical portion, said head member having a plane front and an oblique rear face with an opening respectively in each face and the planes of the bottom surfaces intersecting, a slot extending from one opening along the perimeter of said base portion to the other opening to accommodate a shaving tape therein, a rotatable magazine for each of said openings for said tape for retaining and taking up said tape respectively, said magazines each being slotted at spaced portions thereof and having an overhanging peripheral lip, and having a cover slippable over the magazine forming a rotatable compressible fit, said cover for each magazine being adapted to seal each magazine.

8. A safety razor, adapted to hold and use a tensioned continuous blade, comprising a handle, a head member extending angularly from said handle, said head member being of substantially triangular shape whereby one of the apical portions thereof is connected with said handle and a base portion is disposed opposite said apical portion, said head member having a front and rear opening each of Whose planes intersect the other at a line beyond said base portion, said head member having a slot extending along the perimeter thereof from one opening across said base portion to the other to accommodate a normally spiral roll of shaving tape, a portion of said slot in the base having a recessed front permitting exposure of the cutting edge of the tape, and a rotatable means in said openings for retaining and respectively taking up said tape, said slot extending from the front opening to the recessed front and inwardly toward the opening of the member, said rotatable means comprising a cup adjustably fitted in the respective opening of the body, and a lid adapted to crimp one end of the cup to form a seal therewith to contain the tape.

9. A safety razor adapted to hold and use a tensional continuous tape blade from its spiral roll form comprising a holding member and a head member angularly from said holding member, said head member being substantially polygonal shaped whereby when viewed in plan, one of the apical portions thereof is connected with said holding member and a base portion is disposed opposite said apical portion, said head member having a plane front face and a rear inclined face whose plane intersects the plane of the front face beyond the: head member, each of the faces having an opening with opposed bayonet slots therein, and a tape holding magazine for each of said openings, said magazines each having a body with pins for setting in said slots, and a slitted cover rotatable on said body, said head member further having a groove extending adjacent the perimeter of the member from one of said openings across said base portion to the other opening to accommodate a section of shaving tape with the cutt ng edge opposed, the groove along said base portion having one of its lips slightly recessed to permit exposure of the cutting edge of said tape, said tape forming a close fit in said groove along the base portion.

References Cited in the file of this patent UNITED STATES PATENTS 1,308,801 Mergenthaler July 8, 1919 1,682,794 Moore Sept. 4, 1928 FOREIGN PATENTS 301,566 Italy Oct. 6, 1932 442,886 Great Britain Feb. 17, 1936 836,099 France Oct. 10, 1938

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