US2517028A

US2517028A - Safety razor

Info

Publication number: US2517028A
Application number: US677783A
Authority: US
Inventors: Sr George S Ridner
Original assignee: Individual
Current assignee: Individual
Priority date: 1946-06-19
Filing date: 1946-06-19
Publication date: 1950-08-01
Anticipated expiration: 1967-08-01

Description

g- 1950 G. s. RIDNER, SR 2,517,028

SAFETY RAZOR Filed June 19 1946 2 Sheets-Sheet 1 INVENTOR. Gauge/J Ridwwr; Jr.

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Aug. 1, 1950 G. s. RIDNER, SR 2,517,028

SAFETY RAZOR Filed June 19, 1946 2 Sheets-Sheet 2 INVEN TOR. Geo rga J. RidnetJr:

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Patented Aug. 1, 1950 UNITED STATES PATENT OFFICE *SAFETY RAZOR Georges. Ridner, Sr.,1Newark,zN..J.

Application Junei19, 1946, .SexialNo. 677,783

illlaims. 1 This invention relates to safety razors ofthe type having detachable blades, and hasza an important object to provide "a safety razor whichis capable of being converted from-the stylein which the edge of the razor blade extends substanf tially parallel to the blade handle'to the style in which theedge of the blade is disposed approximately perpendicular to :the handle.

Another object of my invention isto provide a safety razor of the above character in which the handle of the razor is pivotally mounted'with respect to its head, or blade holding portion, and swingable between parallel and perpendicular positions relative to the head so as to'lock the blade thereon in either of these positions, and

which is also swingable toa third position so as to permit the insertion or removal of the blade *onto or from the head.

An additional object of my invention istoprovide a safety razor oi the above character in which the handle is pivotally mounted relatively to the head so that the handle may be compactly collapsed into approximate parallelism with the head so as to occupy a minimum amountof space "is so constructed and arranged .to accommodate blades of less width than the width of the head, and having a hollow handle which is adapted to provide a storage compartment for a supply of blades.

A further object ofmy invention is .toiprovide a safety razor blade of improved construction.

Other objects and advantageswill be apparent ifrom the following. detailed. description of. a pre ferred embodiment of the invention, reference being had to the annexed drawings in which:

Figure l is aplan-view of-asafety razor;

FigureZ is a side view of 317118121201 showing the head in cross-section taken on the line 2-2 of Fig. 1;

Figure 3 is a detail cross-sectional view of the head taken on the line 3-3 of Fig. 1;

Figure 4 is a plan view, in part cross-sectional, corresponding to Fig. 1 but showing the head folded parallel to the handle;

Figure 5 is a side view, but showing the head in cross-section, with the head occupying an intermediate position between perpendicular and parallel positions with respect to the handle to permit the insertion and removal of the blades therefrom;

2 Figure dis an end view of the razoigmore-npar- "ticularly showing the outer face of the head; Figure 7 .is a detail view of the end of the handle in-which a supply of blades isadapted'to be stored, togetherwit hthe cover for closing the opening in the handle; and

Figure 8 is a perspective view of a safety razor blade.

Thesafety razor shown in the drawings com- .prisesa handle 1 anda head 2 pivotally mounted upon one end of thehandle'so thatthe head may be swung to andfromia position perpendicular to the handle, as illustrated in Fig. 1, and agposition parallel with the handle, as illustrated in Fig. 4. 'This pivotal connection comprisesapair of parallel spaced ears 3 projecting from the inner face of the head andsnugly embracingtwo flat sides of the'handlega pin dextending through aligned openings in the ears and handle and serving as the pivot upon which the head .is adapted to swing.

The head '2, .as best shown in Fig. djhas its innerface 2a cut-along an arc while its outer face is defined-by'two inward1y and upwardlyinclined Sections 2b and a hat top section 20. Coextem sive withand overhanging the end edges of the inclined sectio-nszb are blade positioningiflanges figthe space betweenthe flanges and the. inclined surfaces of sections 21) providing wedge shaped guide slots fi corresponding generally to the 'crosssection of asafety razor bla'de 'l (see Fig.2). By virtue of "this construction, safety razor blades may be'slipped-into the guide slots overlyingeach of theinclined sections 2b and retained'in'position with'their cutting edges accurately aligned with the longitudinal perimetral edges 'of the head. Theseperinietral edges eachserves as "a guard in the course of shaving and the razor head '-is cutaway to provide one ormore slots 8 to allow the -escape of soap'whichtends to accumulatein front 'oft'herazor blade.

The end of the handle I beyond thepoint of "its pivotal connection "with the "head 2 is provided with locking lugs 9 and Ill integral with and projecting outwardly from the sides of the handle which lie on opposite sides of the pivot pin 4. These lugs are so shaped as to fit within correspondingly shaped openings in the head. That is to say, when the head occupies a position perpendicular to the handle (as shown in Fig. 1) the lug 9 projects through the opening H in the head so as to project above the outer face of the head and bear against the unsharpened edges of the two razor blades assembled on the head urging these blades firmly into their guide slots and locking them against withdrawal; while, when the head occupies a position parallel to the head as illustrated in Fi 4, the lug l enters the opening l2 in the head so as to also overlie the unsharpened edges of the pair of razor blades mounted on the head and locks them in their guide slots. Thus, in either of the two extreme positions of the head one or the other of the locking lugs engages the blades to hold them in operative position. The razor is therefore capable of use either with the head disposed at right-angles to the handle, as shown in Fig. 1, or disposed parallel to the handle, as indicated in Fig. 4. I

In order to release the blades so that they may be either inserted or removed from the razor head, the head may be swung to the intermediate position shown in Fig. wherein both lugs 9 and IE! are clear of their openings H and I2 and out of obstructing relation to the upper ends of the guide slots. The lugs and openings are suitably dimensioned so that the lugs make a tight bindin fit within their openings thus serving to frictionally hold the razor head in either of its two extreme positions of adjustment. The end of the handle I is extended to form a nose Ia which passes through an opening in the head, which opening may be an elongation of the lug receiving opening H, whereby when the head is swung perpendicularly to the handle, the nose abuts a wall of the opening which serves as a stop to properl position the parts.

The handle I is of square cross-section and is of expanded size adjacent its outer end, that is, the end opposite from the nose end, so as to provide a hollow storage compartment i3 adapted to contain a supply of safety razor blades 1, as shown in Fig. 4c. The end of the handle is open for the insertion and removal of blades and is adapted to be closed by a closure cap 14. The inner face of this cap is provided with a pair of lugs 15 adapted to be received in bayonet slots 16 of the handle for holding the cap in place.

The form of safety razor blade 7 I propose to employ with my razor is best illustrated in Fig. 8. This blade is of generally wedge-shape in crosssection so as to provide a longitudinal thickened non-flexible edge la and a thin, flexible cutting edge lb. The sides of the blade are slightly and oppositely concaved throughout substantially their entire width which I find contributes to the improved cutting action of the blade. The cutting edge lb will be sharpened to a high degree of keenness and will largely be defined by the line of intersection of the concaved sides of the blade.

The blade just described will preferably be made of metal although it may, if desired, be made of plastic or a combination of metal and plastic.

Obviously various changes in the form, construction, arrangement and combination of the several parts of my new safety razor may be made and substituted for those herein shown and described without departing from the nature and principle of my invention as defined by the following claims.

I claim:

1. A safety razor comprising a head and a handle, said head having an outer face defining a, downwardly and outwardly inclined bladesupporting section and a top section extending contiguous to the upper perimetral edge of the inclined blade-supporting section, positioning means upon the blade-supporting section for slidably guiding a razor blade downwardly over the blade-supporting section, an abutment on the head for limiting the sliding movement 0! the razor blade with its cutting edge projecting beyond the lower perimetral edge of the bladesupporting section, a pair of spaced-apart openings in the top section approximately equidistantly spaced from the upper perimetral edge of the blade-supporting section, a pair of lugs upon the handle projecting in a common plane.

but at right-angles to each other, and a pivot connecting the handle to the head for swinging the handle in an arc between two extreme positions of movement parallel and perpendicular to the head, whereby in either extreme position of swinging movement one of said lugs is projected through one of said openings in the head to prevent retraction of the razor blade from its positioning means.

2. A safety razor as set forth in claim 1 in which the length of the lugs relative to the arc of swinging movement of the handle is sufliciently short to retract both lugs from their openings in an intermediate position of swinging movement of the handle.

3. A safety razor as set forth in claim 1 in which the outer face of the head includes two oppositely and downwardly and outwardly inclined blade-supporting sections and the top section extends between adjacent perimetral edges of the blade-supporting sections.

GEORGE S. RIDNER, SR.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 998,009 Jones July 18, 1911 1,005,274 Molkenthin Oct. 10, 1911 1,322,718 Mosher Nov. 25, 1919 1,327,547 Goodwin Jan. 6, 1920 1,734,521 Hope Nov. 5, 1929 2,019,077 l-Ioulton Oct. 29, 1935 2,099,605 Hanson Nov. 16, 1937 2,165,046 Greenstein July 4, 1939 2,262,588 Mailman Nov. 11, 1941