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Similar to Schick Type F

PatentUS2521481

InventionRazor

FiledMonday, 21st July 1947

PublishedTuesday, 5th September 1950

InventorOctavius Victor Rodrigues

LanguageEnglish

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A PDF version of the original patent can be found here.

Patented Sept. 5, 1950 2,521,481
United States Patent Office
2,521,481 RAZOR Octavius Victor Rodrigues, Tampa, Fla. Application July 21, 1947. Serial No. 762,441. 2 Claims. (Cl. 30—83)

An object of this invention is to provide a razor so constructed as to guide the skin to be shaved in a novel manner into angular advancement with respect to the cutting edge of the blade by first retarding and then releasing the skin, to effect a smooth action in shaving.

A further object of the invention is to provide a razor so designed that the lower end thereof may be held in substantially vertical position for convenience of the user, while the blade edge and skin control bar thereof are presented at an acute angle thereto, the surface to be shaved being advanced to the cutting edge of the blade in a safe and efficient manner.

Another object of this invention is to provide a razor which assures the obtaining of a smoother, cleaner shave than may be obtained by using razors of standard construction.

The accompanying drawings illustrate embodiments of structures employing my invention described in detail in the ensuing specification. These embodiments are merely by way of example and the invention is not limited thereto but includes all other forms which would come within the scope of the appended claims.

In the drawings:

Fig. 1 is a fragmentary, enlarged, medially sectional view taken on line 1—1 of Fig. 3, end parts being shown in dotted lines,

Fig. 2 is an end elevational view of a razor embodying my invention,

Fig. 3 is a front elevational view thereof, taken on line 3—3 of Fig. 2, and

Fig. 4 is a view of the razor in perspective.

Referring to the drawings, there is shown a razor embodying my invention comprising a handle having a lower end 10, and an angularly diverted upper end portion 11 disposed at an angle of 25 degrees to the lower end 10 of the handle as will appear in Fig. 2 from an angle line 12. The upper end 11 of the handle is provided with a widened head 13 having a blade guard or skin control bar 14 connected thereto by the end pieces 15 associated with the head 13. The space between the control bar 14 and the head 13 defines an aperture 16 for discharging lather and the debris of shaving from the scene of the shaving operation. A blade clamp 17 extends over the top of the head 13 and along the upper end 11 of the handle where it is secured in suitable fashion 18 to the upper end 11. The free end 19 of the blade clamp is bent and abuts on the blade 20. The top of the head 13 defines a seat 21 for the blade 20. Blade stops 22 are secured to or formed integral with the longitudinal ends of the skin control bar 14 and project thereabove and substantially above the plane of the seat 21 to form stops against which the blade is positioned when inserted in the razor. These stops 22 maintain the edge 34 of the blade in proper spatial relationship to the guard bar or skin control bar 14 whereby the tangent line 23, which represents the face, when in shaving relationship to the blade 20 is disposed at an angle of 32 degrees to the seat 21 and the blade 20. This insures the proper incidence of the hairs of the beard with the edge 34 of the blade. Collectively, the head 13, the seat 21, the blade clamp 17 are herein referred to as the blade holder.

The highest point 24 on the bar 14 is preferably approximately .028 of an inch below the plane of the blade at its cutting edge. This distance is found to permit a suitable angular approach of the skin. Immediately adjacent the aperture 16, the bar 14 falls away from the line 27 marking the high point 24, forming a trailing surface 25. In the opposite direction, proceeding from the line 27, an approach leading surface 26 is flat and preferably approximately 15 degrees from tangent line 23. The curved line 28, which is the sharply defined upper edge of the arcuate undercut portion 30, forms an edge that frictionally engages the skin and effects a controlled release of the skin during the shaving process. Likewise, it acts as a guard against cutting the face by the blade because of an improper angular approach. It is to be noted that the approach leading surface 26 and the trailing surface 25 are uniform throughout in vertical cross-sections. In contra-distinction, the undercut portion 30 is longitudinally arcuate, the apex of the arc being on line 1—1 of Fig. 3. The apex of the arch 31 is on the line 1—1 in Fig. 3. From the apex 31, the arch extends longitudinally in both directions to the end points 32.

In using the razor, the approach leading surface 26 will provide uniform frictional engagement of the skin over its entire area. However, friction of the sharply defined upper edge 28 of the arcuate undercut causes the skin to accumulate below said edge 28 as the bar is moved along, retardment of the skin being greatest at the center or apex 31 and least at the ends 32 at the arcuate undercut control surface 30. Thus, as the razor is drawn along the face in shaving, the skin retarded by the upper edge 28 of the undercut portion 30 is first released at the ends 32, and then at the apex or center 31, passing from the upper edge 28 of the undercut portion upwardly over the approach lending surface 26 in endwise sweeping motions. The approach leading surface 26 slows up the movement of the skin thereover, to prevent the too rapid presentation of the skin to the cutting edge of the blade.

In actual tests of the razor of the instant invention, drawn over a line marked on the skin, in a direction perpendicular to that line, the line is first observed released at the ends 32 of the undercut control surface 30; thereafter the center of the line is observed released at the apex 31 of the undercut control surface. Thus, it appears that the edge 28 of the undercut control surface retards the skin to a greater degree at the center than at the ends of the undercut control surface 30, releasing the skin first at the ends 32 to define the endwise sweeping motion above described.

The high point 24 is disposed at a tangent point to the line 23, the undercut portion 30 being substantially below the high point.

The approach plane 26 is comparatively flat—and of adequate area, providing the friction to assure safety and a controlled skin release.

The bend 19 in the clamp breaks the continuity of contact of skin to blade as well as reduces the surface area of contact plane of clamp and changes its angle. The bent edge 19 of the clamp impinges the blade 20 at a point, distant B from the edge 34 of the blade, as shown in Fig. 1, approximately twice the distance A between the high point 24 and said edge 34. This spacing of the parts results in the smoother presentation of the skin to the cutting edge of the blade and prevents chattering which would occur if the spacing of the parts were varied from that just noted.

In the structure of the instant application, the razor head and the points and surfaces which contact the face are so arranged in relation to the handle that the cutting edge of the blade is safely effective over a wider arc or range than is presently available in any other razor.

While I have shown in the drawings and described in the above specification, a convenient form of a structure embodying my invention, it will be apparent from such disclosure that the invention is capable of many modifications without departing from the spirit and scope thereof, as set forth in the appended claims.

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

1. A razor comprising a handle, a head on said handle having a main portion including a flat surface for receiving a blade having a cutting edge, a bar spaced from said main portion of the head, members connecting the ends of said bar to the main portion to dispose the bar below the plane of and spaced from the said blade-receiving surface, said members having stop portions against which the cutting edge of the blade may abut to dispose the cutting edge above the plane of the bar spaced therefrom and parallel thereto, the bar in cross-section at a plane taken at right angles to the longitudinal axis thereof defining a flat upper portion disposed substantially 133 degrees to the plane of the blade-receiving surface of the main portion of the head, a lower undercut portion and a trailing surface connecting the top of the upper portion and bottom of the lower portion of the bar and defining the back of said bar, the said lower portion of the bar being of the outline of an arc longitudinally, the apex of said arc being disposed immediately adjacent the flat upper portion of the bar and defining a control surface so that in movement of the razor on a skin surface, the skin will be first contacted by the said lower portion, and, by virtue of the arcuate outline thereof longitudinally, will be retarded most at the apex and least at the ends of the arc and will be released in continued movement of the razor, first at the ends of the said lower portion and then gradually up to the apex thereof, providing an angular presentation of the skin to the blade edge for a slicing shaving action.

2. A razor comprising a handle, a head on said handle having a main portion including a flat surface for receiving a blade having a cutting edge, a bar spaced from the main portion of the head, members connecting the ends of said bar to the main portion to dispose the bar below the plane of and spaced from the said blade-receiving surface, said members having stop portions against which the cutting edge of the blade may abut to dispose the cutting edge above the plane of the bar spaced therefrom and parallel thereto, the bar in cross-section at a plane taken at right angles to the longitudinal axis thereof defining a flat upper portion disposed substantially 15° from an imaginary line drawn from the blade edge to the top of the flat upper portion, a lower undercut portion and a trailing surface connecting the top of the upper portion and bottom of the lower portion of the bar, and defining the back of said bar, the lower portion of the front of the bar being of arcuate outline longitudinally and defining a control surface so that in movement of the razor on a skin surface, the skin will be first contacted by the said lower portion and, by virtue of the arcuate outline thereof longitudinally, will be retarded most at the apex and least at the ends of the arc and will be released in continued movement of the razor first at the ends of the said lower portion and then gradually up to the apex thereof, providing an angular presentation of the skin to the blade edge for a slicing shaving action.


Octavius Victor Rodrigues.


REFERENCES CITED

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


UNITED STATES PATENTS


1,040,347Kampfe _____________ Oct. 8, 1912

1,455,725Hartman ____________ May 15, 1923

1,798,447Behrman ___________ Mar. 31, 1931

2,182,571Savary _____________ Dec, 5, 1939

2,219,099Dunning ___________ Oct. 22, 1940