US2048559A - Safety razor - Google Patents

Description

July 21, 1936. Y J. MUROS 2,048,559

SAFETY RAZOR Filed Sept. 24, 1935 mm. MI W1 24 Z5 1 'Hs] M U Z1 Fig. 4.

5 A T/WR/VEY Patented July 21, 1936 "UNITED PATENT OFFICE lette Safety Razor Company, Boston, -Mass., a corporation of Delaware 'Applic'ation September 24, 1935, Serial No. 41,914

4 Claims.

This invention relates to safety razors "of the type employing a sectional cap in combination with a guard or other blade-supporting member.

Such a razor is shown, for example, in my prior Patent No. 2,009,272. The general object of the present invention is to simplify the construction of razors of this general type and to provide 'a construction which may be manufactured advantageously and at low cost.

under face of the guard.

The actuating nut let into the body of the handle in an opening provided for that purpose, I

may be journaled at one end to turn upon a stationary boss which projects from the handle into such opening. The connection between the nut and the cap sections may be supplied, as herein shown, by a short threaded .pin or stud of less length than the nut and arranged to be received therein.

These and other features of the invention will be best understood and appreciated from the following description of a preferred embodiment thereof, selected for purposes of illustration and shown in the accompanying drawing, in which,

Fig. 1 is a view in perspective of the razor in closed condition;

Fig. 2 is a similar .view of the razor head in opened condition;

Fig. 3 is a view of the razor head in vertical cross-section; and

Fig. 4 is a sectional View at right angles to that shown in Fig. 3 and on an enlarged scale.

In the preferred embodiment of the present invention the guard I is utilized as a blade-supporting member for shaping the blade when it is clamped in shaving position. The guard is constructed of heavy sheet metal and provided upon its longitudinal edges with guard teeth H of the usual construction.

It is formed by die-pressing and bending a single blank and is provided with an elongated depressed recess or chamber I! of diamond-shaped contour and this chamber is bounded about its upper margin by an outwardly extending convex blade-supporting face.

The

guard is provided centrally at each end with a slotted opening through the wall of the chamber l2 to permit the passage of the ends 2| of the bar 20, to be presently described. The guard is also provided adjacent each corner with square "5 notches l3 to permit free passage of the cap section arms 25.

The guard I0 is rigidly connected to a fiat handle I4 by rivets or the like and the handle is provided in its upper end with a rectangular 1'0 recess beneath the guard into which projects a boss l5 and upon this is centered a knurled cylindrical nut ll. Threaded into the upper end of the nut l1 and projecting upwardly through the bottom of the guard H] is a threaded pm Hi. In the upper end of the pin is a transverse pivot l9 to which is connected a downwardly extending stem upon the cross-bar 28, the pivot connection permitting a slight rocking and equalizing movement of the bar and the blade carrier of which 2? it is a part. The bar is made by longitudinally folding a sheet metal blank and its ends 21 are offset downwardly and pass out through the slots of the end of the recess l2 of the guard. The offset ends 2| terminate in transverselyrdispos-ed 5 arms 22 which extend across opposite ends of the guard and are movable freely up anddown with the bar and the pin l6 independently of the guard. Limit stops in the form of ears 2'! are struck outwardly from the lower side of the end portions '3?) 2| and these are arranged to bear against the lower face of the guard in the uppermost position of the bar 20.

In Fig. 2 is shown one form of blade 23 suitable for use in a safety razor of my invention. It is provided with a long central slot designed to fit accurately upon the bar 20 and so locate the blade in the razor and with reentrant recesses at each corner which define an elongated unsharpened centrally-disposed portion at each end of the blade. The blade is sharpened at its opposite edges for shaving and the blade slot may be provided with spaced transverse enlargements for the reception of blade-locating studs of various shapes in other safety razors.

The arms 22 of the bar 20 are located beneath the elongated ends of the blade 23 and act to lift the blade and move it away from the blade engaging face of the guard when the bar 20 and the carrier structure associated therewith is moved upwardly.

The cap sections 24 are transversely concave in contour and co-operative with the guard 10 in imparting a transverse curvature to the blade when the latter is clamped in shaving position.

Each cap section 24 is provided at both of its up-- per corners with downwardly extending arms 25 andrthese in turn are p-ivotally connected to the outwardly extending arms 22 of the carrier.

Each'of the arms 25 is adapted to pass downwardly through one of the notches l3 in the Qcorners of 'the guard and. each arm is formed at its lower end or otherwise provided with a semi-- circular inwardly projecting cam piece 26. These cam pieces 26 are adapted to co-operate with the stationary shoulder of the guard adjacent the notch 13 as the carrier israised and accordingly acts to swing the cap sections into open position as the carrier is moved upwardly. In this movement the arms 25 swing outwardly into sub stantially horizontal position as shown in Fig. 2 H 7 and the cap'sections rest upon the guard teeth I I, the flat faces of the earns 26 extending almost.

vertically in this position of the cap sections.

.In the downward movement of the carrier the pivotpoints of the arms 25, being moved below the walls of the'notches IS, the arms are swung upwardly by engagement with the shoulder of the notchan'd the cap sections moved toward their closed position, the cams 26 turning and, passing endwise through the notches l3,

r The vertical position of the pin I5 and associated parts is positively determined at all, times by the threaded connection with the cylindrical nut I 1. It will be understood-that the -nut isheld V positively against vertical'displacement between:

the bottom of the guard IE3 and the boss I5 of the handle. .;'Figs.- 1 and 3 represent :the razor in closed condition with the nutv l'l turned so as to force the pin '15 into itslowermost position in' which the blade is securely clamped in a transversely convex condition between the cap sections 24 and the guard lfi with the nut 11 reacting against the bottom of the guard. If the user now desires to release the blade and open the razor for the purpose of cleaning or replacing the blade he has onlyto turn the knurled nut i7 toward the left as seen in Fig. 3. This movement lifts the pin l6 and the bar 28, at once releasing the blade and by the co-action of the cam projections 22 with theshoulders of the notches i3 causing the cap sections to open as they are carried upwardly with the bar 28, until they are arrested in open position, as shown in Fig. 2, by contact of the cap sections with the guard teeth .or by contact of the'limit stops 2'! with the underside'of theguard It. The. stops 2'! positively prevent the pin I6 from the nut H.

from being entirely disengaged It will thus be seen thatrotation'of the nut I1 1 by the user if effective, onthe one hand, to cause the cap sections to swing toward each other to closed position and'then move jointly downward-. ly to clamp the blade upon the guard, and on the other ,hand, to move the cap sections jointly away from the guard and then, at'a predetermined degree of separation, to swing them apart to wide open position. v v

'Having thus described 7 claim 'as new and desireto secure by. Letters Patentiszf "1 A safety razor comprising a guard member having ablade-supporting face, a carrier movablewith respect to, said face into and out of my invention what I' position to engage :a blade resting thereon, cap

sections pivotally mounted on the carrier for swinging movement toward or away from said face, androtarymeans located substantially in :contact with; the outer face of the guard for raising and lowering the carrier, a a

2. A safety razor having a guard memberwith ablade-supporting face, a cross bar located above said face and having a downwardly extending threaded shank extending through the bottom of the guard, a knurled nut threaded upon said shank and reacting against the lower face of the guard in forcing downwardly'the bar, and cooperating cap sections pivotally mounted and 7 carried with the bar. I

3. A safety razorhaving a recessed guard with i a flat bottom, a handle secured to theguard bottom and having an opening bounded by-the guard bottom, a blade carrier including a cross bar with a threaded stem extending into said opening, cap sections pivoted upon the carrier,

and a nut threaded upon the stern, located in the opening of the. handle'and arranged'to bear against the guard bottom.

l. A safety razor having opening and a boss projecting into the opening,

oo-operating cap sections mounted for .pivotal movement about the blade-supporting. member,

a short threaded pinconnected to the cap sec-' tions, and a screw threaded device rotatable upon said boss for positively controlling the position of said cap sections and being of greater length than the threaded portion of said pin.

, JOSEPH MUROS-f V ablade-sup porting member, a handle securedthereto. having an

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