US2521481A - Razor - Google Patents

Razor Download PDF

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Publication number
US2521481A
US2521481A US762441A US76244147A US2521481A US 2521481 A US2521481 A US 2521481A US 762441 A US762441 A US 762441A US 76244147 A US76244147 A US 76244147A US 2521481 A US2521481 A US 2521481A
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Prior art keywords
blade
skin
bar
razor
edge
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Expired - Lifetime
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US762441A
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Rodrigues Octavius Victor
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26BHAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B21/00Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
    • B26B21/08Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor involving changeable blades
    • B26B21/14Safety razors with one or more blades arranged transversely to the handle
    • B26B21/16Safety razors with one or more blades arranged transversely to the handle involving blades with only one cutting edge

Definitions

  • An Yobject of this invention is to provide a ,razor so constructedr as to guide the skin to be shaved in a novel manner into angular advancement with respect to the cutting edge of the blade iby first Vretarding and then releasing the skin,
  • 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 arer presented at an acute angle thereto, the surface to be shaved being advanced to the cutting edge of the blade in a safe and efiicient manner.
  • Another object of this invention is to provide smoother, cleanershave than may be obtained 'by using razors of standard construction.
  • Fig. 1 is a fragmentary, enlarged, medially sectional view taken on line yI--I of Fig. 3, end Vparts being shown in dotted lines,
  • the handle having a lower end Ill, and an angularly diverted upper end portion I i disposed at an angle of 25 degrees to the lower end Iii oiethe handle as willappear in Fig. 2 iroin'angle line I2.
  • the upper end II of the handle is provided with a widened head I3 having a blade guard or skin control bar I4 connected thereto by the end pieces I5 associated with the head I3.
  • the space between Athe control bar I4 and the head I3 de- ⁇ lines Yan aperture I6 for discharging lather and the debris of shaving from the scene of the shaving operation.
  • a blade clamp Il extends over the top of the head I3 and along the upper end I I of the handle where it is secured in suitable fashion I8 to the upper end II.
  • the free end I9 of the blade clamp is bent and abuts on the blade 25.
  • the top of the head I3 defines a seat 2
  • Blade stops 22 are secured to or formed integral with the longitudinal ends of the skin a razor which assures theV obtaining cf a thereof, teken Y control bar I4 andv project thereabove and substantially above the plane of theseat 2I to form stops against which the blade is positioned when inserted in the razor.
  • These stops 22 maintain the edge Y34 of the blade in proper spatial relationship to the guard bar or skin control bar I 4 whereby the tangent line 23, which represents the face, when in shaving relationship to the blade 2! is disposed at an angle of 32 degrees tothe seat 2
  • the head I3, the seat 2I, the blade clamp Il are herein referred to as the blade holder.
  • the highest point 24 on the bar I4 is preferably approximately .028 of an inch below the plane'of the blade at its cutting edge. This distance is found to permita suitable angular approach'of the skin.
  • the bar I4 falls away from the line 2'I marking theV high point 24, forming a trailing surface 25.
  • an approach leading surface 26 is at and preferablyapproximately 15 degrees from tangent line 23.
  • the curved line 28, which is the sharply dened upper edge of the arcuate yundercut portion 30, forms an edge that fric- .tionally engages the skin and effects a controlled release of the skin during the shaving process.
  • the undercut portion 30 is longitudinally arcuate, the apex of the arc being Von line I-I of Fig. 3.
  • the apex of the arch 3l is on the line I ⁇ I in Fig. 3. From the apex 3l, the arch extends longitudinally in both directions to the end points 32.
  • leading surface 26 will provide uniform frictional engage- .rnent oi the skin over its entire area.
  • 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 25 is comparatively flatand of adequate area, providing the friction to assure safety and a controlled skin release.
  • the bend I9 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 I9 of the clamp impinges the blade 2U at a point, distant B from the edge 34 of the blade, as
  • 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.
  • a razor comprising a handle, a head on said handle having a main portion including a fiat 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 iongitudinaal axis thereof defining a flat upper portion disposed substantially 133 4 l 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.
  • 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 nat 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 rst

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  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)

Description

.sept 5:1950 o.v. RoDRlGuEs l 2521381 Filed .my 21, 194:7 2 sheets-sheet 2 RAZOR 27 /I7 l g IN VEN TOR.
4 ATTORNL? Patented sept. s, 195o UNITE-D- STATES PA'rlezNT OFFICE RAZOR Y Octavius Victor Rodrigues, Tampa, Fla. Appueatierlruly 21, 1947, serial No. 762,441
2 Claims.
f' t An Yobject of this invention is to provide a ,razor so constructedr as to guide the skin to be shaved in a novel manner into angular advancement with respect to the cutting edge of the blade iby first Vretarding and then releasing the skin,
tov eifecta 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 arer presented at an acute angle thereto, the surface to be shaved being advanced to the cutting edge of the blade in a safe and efiicient manner.
Another object of this invention is to provide smoother, cleanershave than may be obtained 'by using razors of standard construction.
The accompanying drawingsl illustrate Y embodiments of structures employing my invention described in detailV in the ensuing specification. These embodiments are merely by way of example and the inventionV is not limited-thereto vbut includes all other forms which would corne Vwithinthe scope of the appended claims.
V`Inthe drawings:
Fig. 1 is a fragmentary, enlarged, medially sectional view taken on line yI--I of Fig. 3, end Vparts being shown in dotted lines,
handle having a lower end Ill, and an angularly diverted upper end portion I i disposed at an angle of 25 degrees to the lower end Iii oiethe handle as willappear in Fig. 2 iroin'angle line I2. The upper end II of the handle is provided with a widened head I3 having a blade guard or skin control bar I4 connected thereto by the end pieces I5 associated with the head I3. The space between Athe control bar I4 and the head I3 de-` lines Yan aperture I6 for discharging lather and the debris of shaving from the scene of the shaving operation. A blade clamp Il extends over the top of the head I3 and along the upper end I I of the handle where it is secured in suitable fashion I8 to the upper end II. The free end I9 of the blade clamp is bent and abuts on the blade 25. The top of the head I3 defines a seat 2| for the blade 20. Blade stops 22 are secured to or formed integral with the longitudinal ends of the skin a razor which assures theV obtaining cf a thereof, teken Y control bar I4 andv project thereabove and substantially above the plane of theseat 2I to form stops against which the blade is positioned when inserted in the razor. These stops 22 maintain the edge Y34 of the blade in proper spatial relationship to the guard bar or skin control bar I 4 whereby the tangent line 23, which represents the face, when in shaving relationship to the blade 2!! is disposed at an angle of 32 degrees tothe seat 2| and the blade 2i?. This insures the proper incidence of the hairs of the beard with the edge 34 of the blade. Collectively, the head I3, the seat 2I, the blade clamp Il are herein referred to as the blade holder.
The highest point 24 on the bar I4 is preferably approximately .028 of an inch below the plane'of the blade at its cutting edge. This distance is found to permita suitable angular approach'of the skin. Immediately adjacent the aperture I6, the bar I4 falls away from the line 2'I marking theV high point 24, forming a trailing surface 25. In the opposite direction, proceeding from the line 21, an approach leading surface 26 is at and preferablyapproximately 15 degrees from tangent line 23. The curved line 28, which is the sharply dened upper edge of the arcuate yundercut portion 30, forms an edge that fric- .tionally 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 i 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 Von line I-I of Fig. 3. The apex of the arch 3l is on the line I`I in Fig. 3. From the apex 3l, the arch extends longitudinally in both directions to the end points 32.
In using therazor, the approach leading surface 26 will provide uniform frictional engage- .rnent oi the skin over its entire area. However,
friction ofthe sharply deiined upper edge 28 of the arcuate undercut causes the skin to accuin 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 3l oi' the undercut control surface. Thus, it appears that the edge 23 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 rst 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 25 is comparatively flatand of adequate area, providing the friction to assure safety and a controlled skin release.
The bend I9 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 I9 of the clamp impinges the blade 2U at a point, distant B from the edge 34 of the blade, as
shown in Fig. l, approximately twice the distance A between the high point 2li 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.
fn 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 fiat 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 iongitudinaal axis thereof defining a flat upper portion disposed substantially 133 4 l 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 nat 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 rst 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 le of this patent:
UNITED STATES PATENTS Number v Name Date 1,040,347 Kampfe Oct. 8, 1912 1,455,725 Hartman May 15, 1923 1,798,447 Behrman Mar. 31, 1931 2,182,571 Savary Dec, 5, 1939 2,219,099 Dunning Oct. 22, 1940
US762441A 1947-07-21 1947-07-21 Razor Expired - Lifetime US2521481A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3768162A (en) * 1971-12-13 1973-10-30 Gillette Co Razor handle
US3786563A (en) * 1971-08-31 1974-01-22 Gillette Co Shaving system
US4069580A (en) * 1976-08-18 1978-01-24 Warner-Lambert Company Safety razor with flexible blade cartridge
USRE30913E (en) * 1980-01-17 1982-04-27 Warner-Lambert Company Safety razor with flexible blade cartridge
US4409735A (en) * 1976-08-18 1983-10-18 Warner-Lambert Company Safety razor

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1040317A (en) * 1912-01-20 1912-10-08 Lawrence A Clark Clutch-coupling.
US1455725A (en) * 1921-11-18 1923-05-15 Hartman Harry Buxton Safety razor
US1798447A (en) * 1926-06-09 1931-03-31 American Safety Razor Corp Razor
US2182571A (en) * 1937-04-07 1939-12-05 Savary Jean-Baptiste Raoul Safety razor
US2219099A (en) * 1938-06-15 1940-10-22 Dunning Leighton Safety razor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1040317A (en) * 1912-01-20 1912-10-08 Lawrence A Clark Clutch-coupling.
US1455725A (en) * 1921-11-18 1923-05-15 Hartman Harry Buxton Safety razor
US1798447A (en) * 1926-06-09 1931-03-31 American Safety Razor Corp Razor
US2182571A (en) * 1937-04-07 1939-12-05 Savary Jean-Baptiste Raoul Safety razor
US2219099A (en) * 1938-06-15 1940-10-22 Dunning Leighton Safety razor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3786563A (en) * 1971-08-31 1974-01-22 Gillette Co Shaving system
US3768162A (en) * 1971-12-13 1973-10-30 Gillette Co Razor handle
US4069580A (en) * 1976-08-18 1978-01-24 Warner-Lambert Company Safety razor with flexible blade cartridge
US4409735A (en) * 1976-08-18 1983-10-18 Warner-Lambert Company Safety razor
USRE30913E (en) * 1980-01-17 1982-04-27 Warner-Lambert Company Safety razor with flexible blade cartridge

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