US2020499A

US2020499A - Safety razor

Info

Publication number: US2020499A
Application number: US668942A
Authority: US
Inventors: John D Garretson
Original assignee: Individual
Current assignee: Individual
Priority date: 1933-05-02
Filing date: 1933-05-02
Publication date: 1935-11-12
Anticipated expiration: 1952-11-12

Description

Nov. 12, 1935.. J. D. GARRETsoN SAFETY RAZOR Original Filed May 2, 1935 IN V EN TOR.

Patented Nov. 12, 1935 UNITED STATES PATENT o'FFlcE Application May 2, 1933, Serial No. 668,942 Renewed June 25, 1934 11 Claims. (Cl. 30-61) This invention relates to a safety razor consisting of a guard member, and a blade backing mem'- ber, and a thin iiexible blade to be clamped between the guard and backing members to retain the cutting edges of the blade in relation to openv ings in the opposite edges of the guard, the blade backing member being hinged to assume a folded position at times to permit the installation or removal of the blade.

l0 An object of the invention is to provide a safety razor on-which the blade may be conveniently mounted and relative to which the blade can be either installed or removed without the necessity of taking apart the safety razor, and the subsequent liability of loss of parts.

A further object of the invention is to provide a safety razor of the type mentioned, which permits of quick mounting and dismounting of the blade, and wherein the blade backing member is foldable to pass through an elongated slot in the blade, said blade being of the slotted type for cooperation with a safety razor of the character specied, the assembly being superior in point of simplicity, inexpensiveness of construction, positiveness of operation, and facility and convenience in use and general eiciency.

In this specification and the annexed drawing, the invention is illustrated in the form considered to be the best, but it is to be understood that the invention is not limited to such form, because it may be embodied in other forms; and it is also to be understood that in and by the claims following the description, it is desired to cover the invention in whatsoever form it may be embodied.

In "the accompanying drawing:

Fig. 1 represents a vertical cross section through a razor constructed in accordance with my invention, and showing the blade backing member in elevated position.

Fig. 2 is a vertical cross section similar to Fig. 1 but showing the blade and blade backing memberin position on the guard in readiness for a shaving operation.

Fig. 3 is a cross section taken through Fig. 2

on the line 3-3.

Fig. 4 is a plan elevation of the razor in readiness for shaving operation.

Fig. 5 is a plan view of the razor blade.

J0 In the drawing the numeral I indicates a guard member provided with a slot 2 along each of its opposite longitudinal edges. The upper center surface ofthe guard I is flattened as at 3, and the sides of the guard adjacent the flattened portion, are curved downwardly and outwardly as at 4 at a proper angle for contacting the razor with the face during the shaving operation.

On each of the upper ends of the guard, on the longitudinal center thereof, are provided the blade positioning studs 5, the opposite upper sur- 5 faces of each stud 5 being curved or beveled for the purpose of giving a cam action, as will be hereinafter brought out. The studs 5 are substantially rectangular in cross section.

The guard member is mounted on a hollow 1o handle I, which is secured to the` center of the guard on the underside thereof. A spindle 1 is 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 being ro- 15 tatable around the lower end of the handle 6. The lower end of the spindle 1 throughout a portion of the length thereof, is provided with a threaded portion 9 with which a pin I0 on the rotatable head engages, whereby rotation of the 20 head 8 and the pin I0 thru the engagement thereof with the threaded portion on the spindle 'I, will cause said spindle to move axially in the handle 6.

The upper end of the spindle 1 is provided with 25 a reduced extension I2 of rectangular cross section, the difference in cross section of the spindle 'I and the extension I2, providing a pair of shoulders I3. The extension I2 on the spindle 'I extends thru an opening I4 in the center of the 30 guard member I. The upper end of the extension I2 is provided with a head I5 thereon, within which a laterally extended shaft I6 is confined. A blade backing memberconsisting of a pair of like halves I1', is swingably mounted on opposite 35 ends of the shaft I6, whereby the blade backing member may be placed in the collapsed position shown in Fig. 1, or swung into extended position shown in Fig. 2. The opposite longitudinal edges I8 of the blade backing member form surfaces to 40 engage opposite sides of the blade adjacent the cutting edges thereof. Opposite .ends of the blade backing members I1 are recessed to receive and accommodate the blade positioning studs 5.

The underside of each of the halves of the blade 45 backing member is provided with a bearing I9 thereon, each bearing having a pin 20 conned therein. A bar 2I has its upper yend journaled on or pivotally connected to each of the pins 20 on opposite sides of the extension' I2. Each bar 2| 50 extends or depends through the opening I4 in the guard member, and the lower end of each bar 2I is bent at right angles to form an outstanding handle I. 'Ihe flanges 22 are adapted to rest on top of the shoulders or stops i8 provided on the spindle 1. Y

Whentheheadlonthehandleisrotated from the position shown in Fig. 2, the spindle 1 is advanced axially in the handle to raise the blade backing member from the extended position shown in Fig. 2 into the collapsed and elevated position shown in Fig. 1. The blade backing member is held in the extended position showninliig.2byturningtheheadlonthehan die to exert a downward pull on the center portion of the opposite halves of the blade backing member, which prevents said blade backing member from buckling. When the blade backing member is in the elevated position shown in Fig. 1, the shoulders I3 on the spindle 1, force the opposite flanges on the bars connected to the halves of the blade backing member into engagemmt with the under surface of the guard member and thus prevent the opposite halves of the blade backing member from swinging to one side or the other. If the opposite halves of the blade backing member were merely hinged to the extension on the spindle, then said halves would be free to swing in either direction. By providing the bars in pivotal connection with each of the opposite halves of the blade backing member on the under side thereof, said halves of the blade backing member are positively prevented from swinging when the said blade backing member is in elevated position.

Whenever the blade backing member is lowered from the elevated position shown in Fig. 1 into the position shown in Fig. 2, the upper surfaces of the stops 5 act to swing the edges of the opposite halves of the blade backing member into the extended position. The length of the spindle extension l2as well as the length of the bars 2|, is such as to permit the blade backing member to be moved away from the guard I and to substantially clear the blade backing member from the studs I.

The blade 2i to be mounted upon the razor above described, is of the thin, flexible type, having the cutting edges on each of the opposite longer sides thereof, and is provided with a central longitudinal aperture 26 which is in the form of a central longitudinal slot. 'I'he length of the slot is greater than the distance between the outer ends of the opposite studs 5 on the guard I and is greater than the length of the'backing member, whereby when the blade is dropped over the backing member in the collapsed position shown in Fig. 1, and onto the studs 5, the blade cannot move lengthwise in either direction.

The slot is provided with enlargements 21 at each of its opposite mds, which enlargements are adapted to engage the studs 5 and prevent sidewise movement of the blade 25. The width of the slot 20 is slightly greater than the overall thickness of the opposite halves of the blade backing member when in the folded or collapsed position shown in Fig. 1, whereby the said blade will pass freely over the collapsed halves when either placing the blade on or removing it lfrom the razor. The contour of the slot 28 and its enlargements 21 correspond to the outline or boundary of the backing member when in the collapsed position, and of the positioning studs.

Ifthebladeistobeplacedontheraaor, the razor elements are nrst brought into the position shown in Fig. 1. The opposite ends of the blade are grasped between the fingers and the central openingllofthebladeisiirstpasseddownover shown in Fig. 2 and clamps the opposite cutting 1o edges of the blade in shaving position along the opposite sides of theguard member.

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

1. A safety razor, comprising a guard mem- 15 ber provided with blade positioning studs on one side thereof and a tubular-'handle on the other side; a blade backing member hinged on its longitudinal center line to form complementary halves; a stem to move axially in said han- 2o die and having the upper end thereof pivotally connected to the opposite halves of the backing member, wherebyv said backing member is movable from an extended position in contact with the guard into a collapsed position above the 25.

guard, and'vice versa cam members on the blade positioning studs to move the opposite halves of the blade backing member from the collapsed and into the extended position when the blade backing member is moved toward the guard; a 30 blade to be clamped between the guard and blade backing member and having a central longitudinal slot fitting over the blade positioning studs and being of a length and width exceeding that of the blade backing member when in the collapsed position; and coacting means on the stem and handle for relatively moving said blade backing member into and from blade clamping position on the guard.

2. 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 hinged on its longitudinal center line to form complementary halves; a stem to move axially in said handle and having the upper end thereof pivotally connected to the opposite halves of the backing member, whereby said backing member is movable from an extendedposition in contact with the guard into a collapsed position above the guard,

and vice versa; means pivotally connected to each of the opposite halves of the blade backing member to hold said halves in collapsed position when the blade backing member is elevated above the guard; cam members on the blade 5;,

positioning studs to move the opposite halves of the blade backing member from the collapsed and into the extended position when the blade backing member is moved toward the guard; a

blade to be clamped between the guard and blade 00 backing member and having a central longitudinal slot iltting overthe blade positioning studs and being of a length and width exceeding that of the blade backing member when in the collapsed position; and coacting means on the stem and handle for relatively moving said blade backing member into and from blade clamping position on the guard.

3. A safety razor, comprisinga guard memblade backing member consisting of complementary halves hingedly connected along one side thereof; means slidable at right angles to said guard member, the halves of said blade backing ber provided with blade positioning studs; a 70 member being hingedly mounted on said slldu lapsed position on opposite sides of the slidable means'when in theraised position; cam'means on the blade vpositioning studs for swinging the j opposite halves of the blade backing member into extended position as the same is moved toward the guard; a blade adapted to be clamped between Y said guard and blade backing member having a central longitudinal slot, the ends ofwhich lt said blade positioning studs and being of a length exceeding" that of said bladel backing member, the width of said slot exceeding the Width of the halves of the blade backing member when in the folded position, said slot permitting the blade to be moved over the folded halves of the blade backing member and said slidable means when .the latter is raised away from the guard; and .means for relatively moving the said blade backing member into clamping `position with the guard.

4. A safety razor, comprising a guard member providedv with blade positioning studs; a blade backing member consisting of complementary halves hingedly connected along one side thereof; means slidable at right angles to said guard member, the halves of said blade backing member being hingedly mounted on said slidable means to cause each of the longitudinal edges thereof to substantially coincide with the longitudinal edges of said guard member when in the extended position and to fold intoa collapsed position on opposite sides of the slidable means when in the raised position; means pivotally connected to each of the opposite halves of the blade backing member to hold the opposite halves in non-swinging folded position on opposite sides of the slidable member when the blade backing member is in the raised position; means on the blade positioning studs for swinging the opposite halves of the blade backing member into extended position as the same is moved toward the guard; a blade adapted to bev clamped between said guard and blade backing member having a central longitudinal slot, the ends of which fit said blade positioning studs and being of a length exceeding that of said blade backing member, the width of said slot exceeding the width of the halves of the blade backing member when in the folded position, laid slot permitting the blade to be moved over the folded halves of the blade backing member and said slidable means when the latter is raised away from'the guard; and means for relatively moving the said blade backing member into clamping position with the guard.

5. A safety razor, including a guard member; a blade; and a cap to engage the blade with the guard member, said cap being divided on its central longitudinal axis into two halves hingedly connected, whereby the cap may be elevated relative to the blade and the two halves of the cap will fold down into a position at right angles to the plane of the guard.

6. A safety razor, including a guard member; a blade; and a cap to engage the blade with the guard member, said cap being divided on its central longitudinal axis into two halves hlngedly connected, whereby the cap may be elevated re1- ative to the blade and the two halves of the cap will fold down into a position at right angles to the plane of the guard; and means to hold the two halves of the cap in a non-swinging position when the cap is in the folded elevated position.

7. A safety razor comprising a guard member provided with bladepositioning studs on one side thereof and a tubular handle on the other side; a blade backing member consisting of connected foldable complementary halves; means slidable at right angles to said guard member, the halves of said blade backing member being mounted on said slidable means whereby each of. the longitudinal edges thereof when in extended position lie parallel with the longitudinal edges of said guard member, and when in the raised position said halves fold up against opposite sides of said slidable means substantially at right angles to the plane of the guard member; means connected to each of the opposite halves of the blade backing member tohold the said opposite halves in non-swinging folded position on opposite sides of the slidable means when the blade backing member is in the raised position; means on the blade positioning studs for swinging the opposite halves of the blade backing member into extended position as the same is moved toward the guard; a blade adapted to' be clamped between said guard member and blade backing member having a central slot fitting over said positioning studs and being of a length and width exceeding that of the blade backing member when in the folded position, said slot permitting the blade to be moved over the folded halves of the said blade backing member and said slidable means when raised away from the guard; and co-acting means on the handle and slidable means for relatively moving said blade backing member into and from blade clamping position on the guard member.

8. A safety razor comprising a cap member, a blade and a guard member; said guard member having studs upon one side thereof for positioning the blade and cap and for extending the cap member into clamping position upon the guard member; a tubular handle on said guard member; means slidably mounted in said handle upon the outer end of vwhich is mounted the cap member; said cap member being centrally divided into halves foldable upon opposite sides of the slidable means; means to hold the cap member in a non-swinging position at an angle to the guard member for blade placement; co-acting means on the handle and slidable means for raising and lowering the cap member from and into clamping position upon the guard member; a blade adapted to be clamped and flexed between the cap member and the guard member and having a central slot fitting over the blade positioning studs and being of a width and length permitting the blade to be moved over the folded halves of the cap member and slidable means when the same are in theraised position.

9. A safety razor, including a guard member; a blade; and a cap to engage the blade with the guard member, said cap being divided on one of its major axes into two halves; and means whereby the cap may be elevated relative to the blade so that the two halves of the cap will fold down into a position at right angles to the plane of the guard.

10. A safety razor, including a guard member; a blade; and a cap to engage the blade with the guard member, said cap being divided on one of its major axes into two halves; means whereby the cap may be elevated relative to the blade so that the two halves of the cap will fold down into a position at right angles to the plane of the m m W ,m m

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the :und member member and being e wnrclly from the center thereof 1o tions and the upper surface tween seid ltuds being nat to in: area for nexing the blade liteedesofthe