US2240958A - Dry shaver - Google Patents
Dry shaver Download PDFInfo
- Publication number
- US2240958A US2240958A US210684A US21068438A US2240958A US 2240958 A US2240958 A US 2240958A US 210684 A US210684 A US 210684A US 21068438 A US21068438 A US 21068438A US 2240958 A US2240958 A US 2240958A
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- Prior art keywords
- cutter
- bars
- teeth
- section
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
- B26B19/02—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the reciprocating-cutter type
- B26B19/04—Cutting heads therefor; Cutters therefor; Securing equipment thereof
- B26B19/10—Cutting heads therefor; Cutters therefor; Securing equipment thereof involving two or more different types of reciprocating cutting elements, e.g. a pair of toothed shearing elements combined with a pair of perforated cutting elements or a combined toothed and perforated cutting assembly
Definitions
- This invention relates to improvements in the shearing head for razors of the dry shaver type, and more particularly to the construction of the cutting members therefor,
- the shearing head of the invention is used with a razor similar to that disclosed and described in the patent application of H. Landsiedel, S. N. 123,162, led January 30, 1937, patented October 25, 1938, and No. 2,134,134.
- Another object is to provide a shearing head having two separate and distinct areas, one for shaving, and the other for cutting long hair.
- FIG. 1 is a side elevation of the upper portion of a. dry shaver, having parts thereof broken away to show the operating mechanism of the inner cutter;
- Fig. 2 is an enlarged cross section of Fig. 1 taken along line 2--2 thereof;
- Fig. 3 is a cross section through 3-3 of Fig. 2;
- Fig. 4 is a cross section through 4-4 of Fig. 2;
- Fig. 5 is a plan View of the outer cutter
- Fig. 6 is a side elevation of the inner cutter
- Fig. 7 is a schematic showing of a hair in position to be cut.
- Figs. 1 and 2 disclose a casing or handle Il) similar to that described in the above patent application.
- Removably affixed to the casing I0 by a set screw I5 is the shearing head I6, which comprises a fixed outer cutter I1 and an inner cutter I8.
- Openings I9 and 20 in the base of the shearing head I6 correspond with the openings I I and I2 in casing I0, and are provided for plungers I3 and rock lever I4, respectively.
- the rock lever I4 is oscillated by any well known type of motor (not shown).
- the outer cutter member Il has a curved shaving section forming the outer portion thereof.
- a central circular bore is formed in the outer t cutter as shown in Fig. 2.
- the outer surface of outer cutter Il has its upper arcuate surface ground away in the center to form three flat surfaces 2I, 22, and 23, disposed at obtuse angles to each other.
- the metal at the edges of the cutter is left to form ribs or ridges 24, which are adapted to protect the razor and to form ameans for stretching the skin when the cutter is applied to the face.
- Slots 25 are cut through the flat surfaces 22 and 23 into the central bore, said slots extending from the surface 2
- the metal remaining under the surface 2I forms a web or longitudinal bar, which tends to strengthen and maintain the cutter rigid. This web or longitudinal bar is located at one side of the medial plane of the cutter.
- Cut in the bars in face 23 is a longitudinal slot 26 which extends into the bore at an angle as shown in Fig. 2. This slot divides the bars into two separate sets, the upper set forming a comb with blunt cutting .teeth 21.
- the inner cutter I8 is substantially cylindrical in form, and has an eccentric bore. Cut in the portion of the cutter having the thickest wall is a slot 2B, which is adapted to be engaged by the lever I4. Cut in and extending through the wall diametrically opposite to slot 28 is a plurality of transverse slots 29 leaving a plurality of cutter bars 28', the edges of which constitute shearing members.
- the inner cutter member is formed with longitudinally extending channels 28" at opposite ends of cutter bars 29' to form shoulders 29 at opposite ends of cutter bars 29', to relieve the friction between the inner andouter cutters, and to insure that the shearing edges will be in close engagement with the inner sur.- face of the outer cutter. It will be noted that channels 29 on the side adjacent the slot 26 are arranged so that the shoulders at the ends of cutter bars 29 are intermediate the ends of the blunt teeth ZLthereby obviating the possibility of cutting the skin which might be drawn in by the comb.
- the side of the shaver head provided with the fiat surface 23 is formed with a plurality of complemental bars 29b at the outer side of the shaving section by the slotting operationthat providesslots 25. Bars 29 project upwardly and toward the ends of blunt cutting teeth 21 but terminate in spaced relation relative thereto in order to form slot 2i.
- the formation of longitudinal channels 28" in inner cutter member Il at opposite ends'of cutter bars 29 provides :iiat
- the surface 23 is brought into engagement with the skin, and the hair is combed by the teeth 21 into the position shown inFig. 7. As will be seen, the hair lies in the slot 2 5 and is looped into the slot 2l. .As the inner cutter oscillates the next adjacent shear edge cuts the hair.
- a dry shaving head comprising an outer cutter member having a curved shaving section, said section having U-shaped ribs at opposite ends, a longitudinal bar joining the central portions of saidribs, a plurality of spaced parallel cutter bars having opposite ends integral with said longitudinal bar and one side of said section, a plurality of blunt cutting teeth projecting laterally'in spaced parallel relation from the opposite side of said longitudinal bar, complemental bars on the other side of said section projecting in aligned relation toward the ends of said teeth and terminating in spaced relation to said teeth, the outer surface of the first-mentioned bars lying in a plane in substantially perpendicular relation to the plane of the outer surfaces of said blunt teeth and complemental bars, each of said planes being in inclined relation to the sides of said cutter member, said bars and teeth having continuous partially cylindrical inner surfaces defining a bore in said cutter member, and an inner cutter member having a plurality of spaced parallel cutter bars formed with a partially cylindrical outer surface complementary to the partially cylindrical inner surface of the bars and teeth of said outer cutter member for cutting cooperation between said bars
- a dry shaving head comprising an outer cutter member having a curved shaving section, a longitudinal bar forming the central portion of said section, a plurality of spaced parallel cutter bars having opposite ends integral with said longitudinal bar and one side of said section, a plurality of blunt cutting teeth projecting laterally in spaced parallel relation from the opposite side of said longitudinal bar, the other side of said section being formed to provide an opening at the ends of said teeth, said cutter bars having flat outer surfaces lying in the same plane, said blunt teeth having fiat outer surfaces li'lns ⁇ in a common plane substantially perpendicular to the plane of said cutter bars, said teeth, longitudinal bar and cutter bars having an inner surface forming a partially cylindrical longitudinal bore in said outer cutter member, and an inner cutter member formed to provide a partially cylindrical section having bearing engagement with the partially cylindrical inner surface of said outer cutter member under said longitudinal bar and the adjacent portions of said first-men.
- tioned cutter bars and said teeth but terminating inwardly of the ends of said teeth and intermediate the ends of said first-mentioned bars, and said inner cutter member being formed to pro- 'vide longitudinally extending channels under the outer ends of said teeth and first-mentioned bars at the ends of the cutter bars thereon.
- a dry shaving head comprising anv outer cutter member having a curved shaving section, a longitudinal bar forming the central portion of said section, a plurality of blunt cutting teeth projecting laterally in spaced parallel relation from one side of said longitudinal bar toward one side of said section, a plurality of complemental bars on said one side of said section projecting in spaced parallel relation toward said blunt teeth in aligned relation therewith and terminating in spaced relation relative thereto, said cutter member being formed with a longitudinal bore providing partially cylindrical surfaces at the inner edges of said bars and teeth, and an inner cutter member having a plurality of spaced parallel cut.
- a dry shaving head comprising an outer cutter ineirlber having a curved shaving section, a longitudiiialhbar forming the central portion of said sectionfa plurality of blunt cutting teeth projectinglaterallyiin spaced" parallel relation from one side of said longitudinal bar toward one side of said section, said side of said section having portions thereof projectix'ig toward the ends of said teeth and terminating in spaced relation thereto, said projecting portions from said one side and said teeth having flat outer surfaces lying in a plane extending in inclined relation to said side and intersecting said longitudinal bar, said longitudinal bar, teeth and said projecting portions having a continuous inner partially cylindrical surface, and an inner cutter member having a plurality of spaced parallel transverse cutter bars formed with a partially cylindrical outer surface engaging said inner partially cylindrical surface for cutting cooperation between said cutter bars and said teeth in reciprocation of one of said members relative to the other, said ⁇ cutter bars terminating in spaced relation inwardly of the ends of said teeth and said inner lcutter member having a longitudinal channel formed therein at the ends of said
- a dry shaving head comprising an outer cutter member having a curved shaving section, a continuous longitudinal center portion forming part of said section, a plurality of spaced cutting members integral at opposite ends with said center portion and one side 'portion of said shaving section-respectively, a plurality of spaced parallel cutting teeth extending from the opposite side of said center portion toward the other side portion of said shaving section and having ends terminating in spaced relation to said other side portion of said shaving section, said teeth, cutting members and center 'portion having a. partially cylindrical inner surface, and an inner cutter member having spaced cutter bars with the outer surfaces in partially cylindrical relation and engaging said partially cylindrical inner surface of said teeth, cutting members and center portion
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- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Dry Shavers And Clippers (AREA)
Description
May 6, 1941. J. H. RAND, JR i 2,240,953
DRY SHAVER i Filed ay 28, 1938 24 FIGA INveNroR J.H.RAND,JR.
Patented May 6, 1.941
DRY SHAVER Y James Henry Rand, Jr., Stamford, Conn., assignor, by mesne assignments, to Remington Rand Inc., Buffalo, N. Y., a corporation of Delaware Application May 28, 1938, Serial No..210,684
Claims.
This invention relates to improvements in the shearing head for razors of the dry shaver type, and more particularly to the construction of the cutting members therefor,
The shearing head of the invention is used with a razor similar to that disclosed and described in the patent application of H. Landsiedel, S. N. 123,162, led January 30, 1937, patented October 25, 1938, and No. 2,134,134.
Most of the razors now in use are ineffective for use in cutting long hair. This is due to the fact that no adequate combing device is provided for collecting the air into contact With the shearing edge.
It is, therefore, the principal object of this invention to provide a shearing head in which adequate combing facilities are provided for combing long hair into the cutter.
Another object is to provide a shearing head having two separate and distinct areas, one for shaving, and the other for cutting long hair.
A more clear conception of the construction, operation, and'further objects of the invention may be had from the following specification when read in conjunction with the accompanying drawing, lin which Fig. 1 is a side elevation of the upper portion of a. dry shaver, having parts thereof broken away to show the operating mechanism of the inner cutter;
Fig. 2 is an enlarged cross section of Fig. 1 taken along line 2--2 thereof;
Fig. 3 is a cross section through 3-3 of Fig. 2;
Fig. 4 is a cross section through 4-4 of Fig. 2;
Fig. 5 is a plan View of the outer cutter;
Fig. 6 is a side elevation of the inner cutter;
Fig. 7 is a schematic showing of a hair in position to be cut.
Figs. 1 and 2 disclose a casing or handle Il) similar to that described in the above patent application. Through openings II and I2 in casing I0, extend resilient plungers I3 and rock lever Il, respectively. Removably affixed to the casing I0 by a set screw I5 is the shearing head I6, which comprises a fixed outer cutter I1 and an inner cutter I8. Openings I9 and 20 in the base of the shearing head I6 correspond with the openings I I and I2 in casing I0, and are provided for plungers I3 and rock lever I4, respectively. The rock lever I4 is oscillated by any well known type of motor (not shown).
The outer cutter member Il has a curved shaving section forming the outer portion thereof.
A central circular bore is formed in the outer t cutter as shown in Fig. 2. The outer surface of outer cutter Il has its upper arcuate surface ground away in the center to form three flat surfaces 2I, 22, and 23, disposed at obtuse angles to each other. The metal at the edges of the cutter is left to form ribs or ridges 24, which are adapted to protect the razor and to form ameans for stretching the skin when the cutter is applied to the face. Slots 25 are cut through the flat surfaces 22 and 23 into the central bore, said slots extending from the surface 2| down the side of the cutter. These slots leave a plurality of comb orcutter bars, the inner edges of which constitute shearing edges. The metal remaining under the surface 2I forms a web or longitudinal bar, which tends to strengthen and maintain the cutter rigid. This web or longitudinal bar is located at one side of the medial plane of the cutter.
Cut in the bars in face 23 is a longitudinal slot 26 which extends into the bore at an angle as shown in Fig. 2. This slot divides the bars into two separate sets, the upper set forming a comb with blunt cutting .teeth 21.
The inner cutter I8 is substantially cylindrical in form, and has an eccentric bore. Cut in the portion of the cutter having the thickest wall is a slot 2B, which is adapted to be engaged by the lever I4. Cut in and extending through the wall diametrically opposite to slot 28 is a plurality of transverse slots 29 leaving a plurality of cutter bars 28', the edges of which constitute shearing members. The inner cutter member is formed with longitudinally extending channels 28" at opposite ends of cutter bars 29' to form shoulders 29 at opposite ends of cutter bars 29', to relieve the friction between the inner andouter cutters, and to insure that the shearing edges will be in close engagement with the inner sur.- face of the outer cutter. It will be noted that channels 29 on the side adjacent the slot 26 are arranged so that the shoulders at the ends of cutter bars 29 are intermediate the ends of the blunt teeth ZLthereby obviating the possibility of cutting the skin which might be drawn in by the comb.
The side of the shaver head provided with the fiat surface 23 is formed with a plurality of complemental bars 29b at the outer side of the shaving section by the slotting operationthat providesslots 25. Bars 29 project upwardly and toward the ends of blunt cutting teeth 21 but terminate in spaced relation relative thereto in order to form slot 2i. The formation of longitudinal channels 28" in inner cutter member Il at opposite ends'of cutter bars 29 provides :iiat
faces 23e. 'I'hese flat faces 29 are on the outer face of inner cutter i8 and extend from the bottom portions of shoulders 29* in the manner illustrated in Fig. 2 to provide a space between the inner and outer cutters under the portion of the shaving section at the outer ends of the blunt 1 the lever I4, thereby moving theshearing edges of thel inner cutter across the edges of the outer cutter. 1f the surface 22 is brought into engagement with and moved over the face in a direction parallel to the slots 25. short hair will be combed into the slots and 29, and sheared off by the action of the cutters.
If it is de'sired to cut long hair, the surface 23 is brought into engagement with the skin, and the hair is combed by the teeth 21 into the position shown inFig. 7. As will be seen, the hair lies in the slot 2 5 and is looped into the slot 2l. .As the inner cutter oscillates the next adjacent shear edge cuts the hair.
While I have described what I consider to be a highly desirable embodiment of my invention, it is obvious that many changes in form could be made without departing from the spirit of my invention, and I, therefore, do not limit myself to the exact form herein shown and described,
nor to anything less than the whole of my invention as hereinbefore set forth, and as hereinafter claimed.
What I claim as new, and desire to secure by Letters Patent, is: f
1. A dry shaving head comprising an outer cutter member having a curved shaving section, said section having U-shaped ribs at opposite ends, a longitudinal bar joining the central portions of saidribs, a plurality of spaced parallel cutter bars having opposite ends integral with said longitudinal bar and one side of said section, a plurality of blunt cutting teeth projecting laterally'in spaced parallel relation from the opposite side of said longitudinal bar, complemental bars on the other side of said section projecting in aligned relation toward the ends of said teeth and terminating in spaced relation to said teeth, the outer surface of the first-mentioned bars lying in a plane in substantially perpendicular relation to the plane of the outer surfaces of said blunt teeth and complemental bars, each of said planes being in inclined relation to the sides of said cutter member, said bars and teeth having continuous partially cylindrical inner surfaces defining a bore in said cutter member, and an inner cutter member having a plurality of spaced parallel cutter bars formed with a partially cylindrical outer surface complementary to the partially cylindrical inner surface of the bars and teeth of said outer cutter member for cutting cooperation between said bars during the reciprocation of one of said cutter members relativeto the other, said cutter bars of said inner cutter member having opposite ends terminating intermediate the ends ofsaid first-mentioned cutter bars and said teeth, respectively, said inner cutter member being formed to provide shoulders at the ends of the cutter bars thereon in substantially Vperpendicular relation to said teeth and firstmentioned cutter bars and said inner cutter member having longitudinally extending channels on each side thereof under the outer ends of said first-mentioned cutter bars and said complemental bars: and adjacent to said shoulders.
2. A dry shaving head comprising an outer cutter member having a curved shaving section, a longitudinal bar forming the central portion of said section, a plurality of spaced parallel cutter bars having opposite ends integral with said longitudinal bar and one side of said section, a plurality of blunt cutting teeth projecting laterally in spaced parallel relation from the opposite side of said longitudinal bar, the other side of said section being formed to provide an opening at the ends of said teeth, said cutter bars having flat outer surfaces lying in the same plane, said blunt teeth having fiat outer surfaces li'lns` in a common plane substantially perpendicular to the plane of said cutter bars, said teeth, longitudinal bar and cutter bars having an inner surface forming a partially cylindrical longitudinal bore in said outer cutter member, and an inner cutter member formed to provide a partially cylindrical section having bearing engagement with the partially cylindrical inner surface of said outer cutter member under said longitudinal bar and the adjacent portions of said first-men.. tioned cutter bars and said teeth but terminating inwardly of the ends of said teeth and intermediate the ends of said first-mentioned bars, and said inner cutter member being formed to pro- 'vide longitudinally extending channels under the outer ends of said teeth and first-mentioned bars at the ends of the cutter bars thereon.
3. A dry shaving head comprising anv outer cutter member having a curved shaving section, a longitudinal bar forming the central portion of said section, a plurality of blunt cutting teeth projecting laterally in spaced parallel relation from one side of said longitudinal bar toward one side of said section, a plurality of complemental bars on said one side of said section projecting in spaced parallel relation toward said blunt teeth in aligned relation therewith and terminating in spaced relation relative thereto, said cutter member being formed with a longitudinal bore providing partially cylindrical surfaces at the inner edges of said bars and teeth, and an inner cutter member having a plurality of spaced parallel cut. ter bars formed with a partially cylindrical outer surface complementary to the partially cylindrical inner surface of the bars and teeth and engaging said inner surface throughout said longitudinal bar and adjacent portions of said teeth, said cutter bars of the inner cutter ter. minating inwardly from the ends of said teeth in a shoulder extending substantially radially in said bore, and said inner cutter having a fiat face extending longitudinally thereof from the base of said shoulder in spaced relation to the inner edges of said complemental bars and the ends of said teeth to provide a longitudinal channel between said cutter members.
4. A dry shaving head comprising an outer cutter ineirlber having a curved shaving section, a longitudiiialhbar forming the central portion of said sectionfa plurality of blunt cutting teeth projectinglaterallyiin spaced" parallel relation from one side of said longitudinal bar toward one side of said section, said side of said section having portions thereof projectix'ig toward the ends of said teeth and terminating in spaced relation thereto, said projecting portions from said one side and said teeth having flat outer surfaces lying in a plane extending in inclined relation to said side and intersecting said longitudinal bar, said longitudinal bar, teeth and said projecting portions having a continuous inner partially cylindrical surface, and an inner cutter member having a plurality of spaced parallel transverse cutter bars formed with a partially cylindrical outer surface engaging said inner partially cylindrical surface for cutting cooperation between said cutter bars and said teeth in reciprocation of one of said members relative to the other, said `cutter bars terminating in spaced relation inwardly of the ends of said teeth and said inner lcutter member having a longitudinal channel formed therein at the ends of said cutter bars to space adjacent portions of saidY inner cutter member from the ends of said teeth and said projecting portions on said side.
5. A dry shaving head comprising an outer cutter member having a curved shaving section, a continuous longitudinal center portion forming part of said section, a plurality of spaced cutting members integral at opposite ends with said center portion and one side 'portion of said shaving section-respectively, a plurality of spaced parallel cutting teeth extending from the opposite side of said center portion toward the other side portion of said shaving section and having ends terminating in spaced relation to said other side portion of said shaving section, said teeth, cutting members and center 'portion having a. partially cylindrical inner surface, and an inner cutter member having spaced cutter bars with the outer surfaces in partially cylindrical relation and engaging said partially cylindrical inner surface of said teeth, cutting members and center portion
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US210684A US2240958A (en) | 1938-05-28 | 1938-05-28 | Dry shaver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US210684A US2240958A (en) | 1938-05-28 | 1938-05-28 | Dry shaver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2240958A true US2240958A (en) | 1941-05-06 |
Family
ID=22783849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US210684A Expired - Lifetime US2240958A (en) | 1938-05-28 | 1938-05-28 | Dry shaver |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2240958A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3128549A (en) * | 1962-03-19 | 1964-04-14 | Shavair Of America Inc | Rotary type shaver with suction disposal means |
-
1938
- 1938-05-28 US US210684A patent/US2240958A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3128549A (en) * | 1962-03-19 | 1964-04-14 | Shavair Of America Inc | Rotary type shaver with suction disposal means |
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