US1952370A

US1952370A - Safety razor

Info

Publication number: US1952370A
Application number: US642871A
Authority: US
Inventors: John D Garretson
Original assignee: Individual
Current assignee: Individual
Priority date: 1932-11-16
Filing date: 1932-11-16
Publication date: 1934-03-27
Anticipated expiration: 1951-03-27

Description

March 27. 1934. J, D, GARRETSON 1,952,370

SAFETY RAZOR Filed NOV. 16, 1932 Patented Mar. 27, 1934 UNITED STATES PATENT' ori-"ICE 5 Claims.

This invention relates to that class of safety razors' in which two clamping members, a guard member and a blade backing member, are provided, and a thin, flexible blade is clamped between. the guard and backing members to retain the cutting edges of the blade in shaving relation to openings'in the opposite edges of the guard.

.An object of the invention is to provide a safety razor of the type mentioned, on which the blade may be conveniently mounted and which can be e'iciently cleansed without the necessity of taking apart the safety Vrazor with the consequent liability of loss of parts. l

- A further object of theinvention is to provide a'safety razor of the type mentioned which permits of quick mounting and dismounting of the blade, and wherein the two clamping members are so constructed that their relative positions for mounting and dismounting the blade are predetermined by stops on one of said members for cooperation with-the other member.

A still further object ofthe invention to provide a slotted blade for cooperation with a safety razor-of the type specified, that will be superior inV point of simplicity, inexpensiveness of construction, positiveness of operation, and facility and convenience in use and general efciency.

, In this specication and the annexed drawing, vthe inventionzis illustrated in the formconsidered tobe the best, but itis to be understood that the invention is not limited to such form, because it may be embodied in other forms; Y and itis also ltobe understood 'that in and bythe claims following the description, it is desired to cover the invention in whatsoever form it mayb embodied. Y

In the accompanying one sheet of drawings:

'-Fig. 1 is a cross section througha razor constructed in accordance with my invention, showing the razor in'disassembled position.

Fig. v2 is a section similar to Fig. 1, showing the razor in operative position.V Y. Fig.,3 is a plan view of Fig. 1.

Fig. .4 is a plan view of the blade to be used on my razor. v

Fig. 5 is aside view of a fragmentary portion of a modifiedl formjof safety razor showing the method of applying or removing a modified form of blade.

Fig. 6 is aplan view of the modied form of blade referred vto in Fig. 5. s

' In the drawing, the numeral l indicates a guard' member, provided with aslot 2 along each of its opposite Vlongitudinal edges. The upper center surface of the guard 1 isflattened as at3, and the sides of the guard adjacent the flattened portion 3, are curved downwardly and outwardly as at 4, at a propel' angle for contactingthe razor with the face during the shaving operation. In the longitudinal center line of the guard member are provided, on the blade receiving surface 3 thereof, Y

two spaced blade positioning studs 5 of any suitable conguration. In the case illustrated, these studs are rectangular.

rThe guard member is mounted Von a hollow handle 6, which is iixedly secured to the center of the guard on the' under side thereof.

A'spindle lis slidably confined in the tubular handle 6. The lower end of the handle 6 is shouldered and'threaded to receive a head 8, said head 8 being rotatable upon the said lower end of the handle 6. Thelower end of the spindle '7 and throughout a portionof the length thereof, is provided with a threaded portionV v9 thereon with which alpin 10 on the rotatable head 8 engages, whereby rotation of the head-8 and the pin 10, through the engagement thereof with the threadedl portionfon the spindle '7will cause said spindle to move axially in the handle 6.

The upper end of the spindle Y'l is provided with a reduced extension-'12 of rectangular cross section, the difference in cross section of the spindle 7 and the extension 12 providing a'pair of shoulders13. The extension 12 on the spindle 7 is adapted to Vextend through an opening in the center of the guard member 1. The stops 13 on the spindlev rl,'by engaging the under side of the guard 1,;limit-the extent to which the spindle. 7 may move axially within the handle 6. The outermost end of the spindle extension 12 has a blade backing member 14 securely mounted thereon. The opposite longitudinal side edges 15 of the blade backing member 14 form blade engaging faces, as will be hereinafter described.l The blade backing member 14 is also provided with enlarged shoulders 16 thereon to receive and accommodate the-positioning studs 5.

Portions ofthe blade engaging member are cut away as atl?, in order that the safety razor may be readily cleaned. The length of the spindle exten-sion 12 is suicient to permit the blade backing member le to be moved away from the guard 1, and to clear the blade engaging member 14 from the positioning studs 5. Y

The blade 18, to be mounted upon the razor above described, is of the thin, flexible type, having two cutting edges 19, and is pro-vided with a centrallongitudinal aperture 20, which is in the form of a central longitudinal slot. 'Ihe length of the slotis greater than the distance between the studs.

the outer faces of the pair of spaced positioning studs 5 on the guard 1, and is greater than the length of the backing member 14, whereby, when the blade is dropped over the backing member 14 and onto the studs 5, it cannot move lengthwise in either direction. The width of the slot 20 also corresponds to the width of the studs 5, whereby the said blade may not move sidewise relative to The contour of the slot 20 corre* sponds, obviously, to the outline or boundary of the cross sections prescribed by the positioning studs 5. The width of the slot 20 also exceeds the distance between either longitudinal edge of the blade backing member 14 and the face of the spindle extension 12 furthermost away from said edge of the blade backing member, to permit the blade to be passed over and around the blade backing member 14 when the blade is to be mounted upon or taken off the razor in the manner tobe described.

In Fig. 2 of the drawing, the razor elements are in their shaving positions, the blade 18 being clamped between the guard and blade backing members. In order to clean the razor after shaving, the tubular handle 6 is taken hold of with one hand, and the head or knob 8 is turned by the other hand in the proper direction whereby, by the action of the pin 10 in the slot 9, the blade engaging member is shifted away from the guard member until the shoulders 13 on the spindle 7 abut against the under face of the guard l, the elements being then in the position shown in Fig. 1, when the guard and blade backing members and the blade may be eciently wiped or cleaned, without actually taking apart the razor.

If the blade is to be placed on the razor, the

razor elements are rst brought into the position shown in Fig. 1 of the drawing. The opposite ends of the blade are grasped between the fingers, and the central opening 20 of the blade is first passed over and around one side of the blade backing member 14 as shown by dotted lines, until one side of the slot 20 strikes one side of the spindle extension 12, thus allowing the other side edge of the slot 20 to pass around the other side edge of the blade backing member 14, thus permitting the opposite ends of the slot 20 to be passed down over the positioning studs 5. The blade would be removed from the razor by a reversal of the movement heretofore described. When the blade is properly positioned on the guard, the blade clamping member is shifted from the position shown in Fig. l into that shown in Fig. 2, after which the spindle '7 is turned in the proper direction to move the backing member into safety clamping relation with the blade and guard member.

In the modified form of safety razor shown in Figs. 5 and 6, I have provided a guard 30 with a tubular handle 31 depending therefrom; a spindle 32 slidable axially in the handle thru the guard, and a blade backing member 33 iixedly secured to the spindle. The spindle 32 has a rectangular cross-section where it projects thru and above the guard, and the longer sides of said spindle lie at right angles to the longitudinal side edges of the Iblade backing member. An edge of the spindle is cut away at 34, The blade 35 to be used on the modied form of razor is provided with a central longitudinal slot 36 having enlargements 37 at each of its opposite ends and a middle enlargement 38 on opposite sides of its center. The length of the slot is greater than the distance between the outer faces of a pair of spaced positioning studs 39 on the upper face of the guard 30, and

is greater than the length of the backing member 33. The width of the slot 36 is also greater than the distance between the cut away portion 34 of the spindle and the longitudinal side edge of the backing member 33 furthermost away from the cut away portion 34, to permit the blade to be passed over and around the blade backing member when the blade is to be mounted upon or taken on? the razor. The central enlargement 38 in the slot 35 is adapted to receive the section of the spindle 32 when the blade is being placed onto or removed from the guard, as is shown by dotted lines in Fig. 5.

Having thus described this invention, what I claim and desire to secure by Letters Patent is:

l. A safety razor, comprising a guard member provided with blade positioning studs; a blade backing member; means slidable at right angles to said guard member, said backing member being xedly mounted on said shiftable means to cause each of its longitudinal edges to substantially coincide with the longitudinal edges of said guard member; a blade adapted to be clamped between said guard and blade backing member having a central longitudinal slot the ends of which iit said positioning studs and being of a length exceeding that of said blade backing mem` ber, the width of said slot exceeding the distance between one side of the blade backing member and the slidable means the area of said slot being less than the area of theblade fixed backing member, said slot permitting the blade to be moved over said shiftable means and said backing member when the latter is spaced away from the guard; and means for relatively moving said blade backing member into blade clamping position with the guard. f

2. A safety razor, comprising a guard member provided with blade positioning studs; a blade backing member; means slidable at right angles to said guard member, said backing member being xedly mounted on said shiftable means to cause each of its longitudinal edges to substantially coincide with the longitudinal edges of said guard member; a blade adapted to be clamped between said guard and blade backing member having a central longitudinal slot the ends of which are enlarged to t said positioning studs, and the central portion of which is enlarged and being of a length exceeding that of said blade backing member, the width of said slot Vexceeding the disrance between one side of the blade backing member and the slidable means, said slot and the enlarged central portion thereof permitting the blade to be moved over said shiftable means and said backing member when the latter is spaced away from the guard; and means for relatively moving said blade backing member into blade clamping position with the guard.

3. A safety razor, comprising a guard member provided with blade positioning studs; a blade backing member; means slidable at right angles to said guard member, said backing member being iixedly mounted on said shiftable means to cause each of its longitudinal edges to substantially coincide with the longitudinal edges of said guard member, said means having a portion thereof cut away; a blade adapted to be clamped between said guard and blade backing member having a central longitudinal slot, being of a length exceeding that of said blade backing member, the ends of which are enlarged to fit said positioning studs, and the central portion of which is enlarged, the width of said slot exceeding the distance between one side of the blade backing member and the cut away portion in the slidable means, said slot and the enlarged centralv por' tion thereof permitting the blade to be moved over said cut away portion in the shiftable means and said backing member when the latter is spaced away from the guard; and means for relatively moving said blade backing member into blade clamping position with the guard.

4. A safety razor, comprising a guard member provided with blade positioning studs on one side thereof and a tubular handle on the other side; a blade backing member having opposite end edges thereof recessed to receive the blade positioning studs; a stem to mcve axially in said handle and having said backing member xedly attached to an end thereof whereby the plane of said backing member is parallel to the plane of the guard member at all times; a blade adapted to be clamped between said guard and blade backing member and having a` central aperture of less area than the blade backing member, said blade positioning studs being engageable with opposite ends of the aperture and said aperture being of a length exceeding that of said blade backing member, and of a width exceeding the distance between one side of the stem and the opposite side edge of the blade backing member; and coacting means on the stem and handle for relatively moving said blade backing member into bladeclamping position on the guard.

5. A safety razor, comprising a guard member provided with blade positioning studs on one side thereof and a tubular handle on the other side; a blade backing member having opposite edges thereof recessed to receive the blade positioning studs, and prolongations of each end recess being provided in the backing member to facilitate cleaning thereof; a stem toY move axially in said handle and having said backing member xedly attached to an end thereof whereby the plane of said backing member is parallel to the plane of the guard member at all times; a blade adapted to be clamped between said guard and blade backing member and having a central aperture of less area than the blade backing member, said blade positioning studs being engageable with opposite ends of the aperture and said aperture being of a length exceeding that of said blade backing member, and of a width exceeding the distance between one side of the stem and the opposite side edge of the blade backing member; and co-acting means on the stern and handle for relatively moving said blade backing member into blade clamping position on the guard.

JOHN D. GARRETSON.