US3409982A - Disposable single edge razor having a generally triangular head - Google Patents

Disposable single edge razor having a generally triangular head Download PDF

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Publication number
US3409982A
US3409982A US575809A US57580966A US3409982A US 3409982 A US3409982 A US 3409982A US 575809 A US575809 A US 575809A US 57580966 A US57580966 A US 57580966A US 3409982 A US3409982 A US 3409982A
Authority
US
United States
Prior art keywords
blade
razor
head
guard
generally triangular
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US575809A
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English (en)
Inventor
Baker Hugh William Barnes
Pomfret Edward Eric
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gillette Co LLC
Original Assignee
Gillette Co LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gillette Co LLC filed Critical Gillette Co LLC
Application granted granted Critical
Publication of US3409982A publication Critical patent/US3409982A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/60—Making other particular articles cutlery wares; garden tools or the like
    • B21D53/64—Making other particular articles cutlery wares; garden tools or the like knives; scissors; cutting blades
    • B21D53/645—Making other particular articles cutlery wares; garden tools or the like knives; scissors; cutting blades safety razor blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B21/00—Razors 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
    • B26B21/08—Razors 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
    • B26B21/14—Safety razors with one or more blades arranged transversely to the handle
    • B26B21/16—Safety razors with one or more blades arranged transversely to the handle involving blades with only one cutting edge

Definitions

  • a disposable safety razor which comprises a generally triangular blade supporting platform having a handle attached to the underside of the platform and a blade guard along One side.
  • the platform is provided with a blade stop adjacent each end of the blade guard and a blade locating projection at the apex opposite the side at which the guard is located.
  • a single edge blade conforming generally to the shape of the platform, which blade may conveniently be made from one-half of a slotted double edge blade, is disposed on the platform with the ends of the sharpened edge in engagement with the blade stops and a notch in its apex in engagement with the blade-locating projection.
  • a cap conforming in shape to the platform is clamped to the platform, sandwiching the blade therebetween.
  • This invention relates to the shaping of razor blades from wafer thin hardened steel strip and disposable razors comprising such blades.
  • a method of shaping a razor blade which includes the step of cutting a wafer thin strip of hardened steel by means of a V section punch while the strip is supported by a plane base of yieldable material.
  • the strip may be in the form of a double-edged blade, and one particularly advantageous application of the invention is in the manufacture of single edged blades from double-edged blades which would otherwise be scrapped for reasons not affecting the shaving edges ofthe blade.
  • the double edged blade is supported on a plane yielding base constituted by a blade guard, and the unwanted portions of the blade are cut off by means of a V-shaped punch working against the blade guard, to which the single-edged blade thus formed is subsequently secured.
  • the invention includes razor blades made by the method of the invention, and razors including shaving heads incorporating such blades. 7
  • the invention also includes a method of forming a single edged razor blade from a double edged blade which includes the steps of scoring the double-edged blade diagonally in two directions and breaking the blade along the score lines.
  • the invention also provides a novel construction of a safety razor including a shaving head in which a singleedged razor blade is clamped between a blade guard and a cap of synthetic plastic material, the blade guard and cap having interfitting projections and recesses and being secured together by heat sealing.
  • the invention further provides a single edged razor blade having the general form of an isosceles triangle, the cutting edge being disposed along the base of the triangle and a part circular notch being formed at the apex.
  • FIG. 1 is a side elevation of a punch used in performing the method of the invention
  • FIG. 2 is a plan view showing one half of a blade guard used as a yielding base in a blade shaping operation
  • FIGS. 3 and 4 are front and side elevations of one form of razor in accordance with the invention.
  • FIGS. 5 and 6 show in plan and elevation an alternative form of razor.
  • FIG. 1 illustrates the shaping of a strip of wafer thin hardened strip A supported on a plane yielding base B, conveniently of polystyrene or other synthetic resin plastic material.
  • the strip is severed by a punch C of V-shaped cross-section which is mounted for movement relative to an adjacent pressure pad D which is spring loaded downwardly relative to the punch.
  • The'pad presses the strip against the base B prior to the strip being severed, and thereby tends to flatten out the base B which may be subject to slight inaccuracies.
  • the punch is flexibly mounted with a small degree of float so that it can accommodate slight misalignments of the base B relative to the line of action of the punch C and small irregularities in the base.
  • This method of shaping razor blades may be applied where a strip of great length is formed with one or two sharpened cutting edges, and separate blades are severed therefrom in the manner described.
  • the yielding base B is advantageously constituted by a blade guard to which the blade is subsequently to be secured.
  • FIG. 2 there is illustrated a plan view of one half of a blade guard 3 of generally triangular profile having a rear projection H at its apex.
  • a double-edged blade A is superimposed as indicated in phantom line, and the blade is severed along a slightly curved line E.
  • the severing is duplicated on the other half of the blade guard 3 to produce a single-edged blade having the general form of an isosceles triangle having the cutting edge disposed along the base of the triangle, and a part circular notch G being formed at the apex which receives and engages the projection H.
  • a shaving head is completed by securing, usually through heat sealing, a cap (not shown in FIG.
  • the cap being formed with interfitting projections which extend into the recesses F and a rear notch which accommodates the projection H.
  • the guard 3 is provided with a pair of front projections I, one on each end, which in cooperation with the rear projection H serve to accurately ocate the cutting edge of the blade A along the shaving edge.
  • FIGS. 3 and 4 One form of razor in accordance with the invention is illustrated in FIGS. 3 and 4.
  • the razor which is constructed of synthetic resin plastic materials, comprises a shaving head 1 mounted on handle 2.
  • the head 1 comprises the guard 3 and a cap 4, between which is secured a generally triangular blade 5 formed from a double-edged blade in the manner described in relation to FIG. 2.
  • the head 1 is releasably received in a transversely extending channel or notch 6 at the upper end of handle 2, the width of the notch 6 tapering slightly towards its open, forward end, and the head 1 being correspondingly shaped so that the parts are dovetailed together.
  • the head 1 is held in position by friction, assisted by the resilience of the material of which the razor is made.
  • the razor is illustrated with its head 1 in position for use, with the cutting edge of the blade 5 exposed, but the head 1 may be assembled with the handle 2 in an alternative position, indicated in phantom line, in which the head 1 lies flat against the handle, intermediate the ends thereof, so that the edge of the blade 5 is protected by the handle against damage, particularly during packaging and transit.
  • the wrapping of the razor is protected from being cut by the blade.
  • the head is held in this position by virtue of a projection 7 on the side of the handle, which projection is removably received in and gripped by a slot or aperture 8 in the head 1.
  • the head is readily removed from the projection 7 and inserted in the notch 6 to prepare the razor for use.
  • FIG. 5 shows the razor in plan with the cap removed for clarity
  • FIG. 6 which is a side elevation.
  • the blade guard 3 is formed with two notches 11 to receive corresponding projections 13 on the cap 4, and with a part circular projection 12 which accommodates a corresponding notch in the cap (not shown) and the part circular notch 14 at the apex of the blade 5.
  • the projections and corresponding notches are preferably heat-sealed together to clamp the blade firmly therebetween.
  • the above described razors may be manufactured sutficiently cheaply to be disposable after a single use.
  • these may be formed from existing double edged blades by scoring the blades diagonally from corner to corner in both directions and subsequently breaking off the single edge triangular blades thus marked out.
  • the design of the blades and razors may be such that each of the triangular blades marked olf by the score lines may have secured to it a guard and cap prior to the blade being broken off along the score lines.
  • a disposable safety razor including; a shaving head in which a single-edged razor blade is clamped between a blade guard and a cap of synthetic plastic material, the blade guard and cap having interfitting projections and recesses for securing them to one another, said shaving head and the blade therein having the general form of an isosceles triangle, the shaving edge being disposed along the base of said triangle and the cutting edge of the blade being located along the shaving edge by a pair of spaced projections adjacent said shaving edge and by a projection at the apex of said head which engages a notch in the apex of said blade.
  • a safety razor according to claim 1 which includes a handle having a transversely extending notch at one end and intermediate its ends a lateral projection, said head having the edge opposite the shaving edge removably gripped in said notch for use and said head having an aperture therein which can receive and grip said lateral projection and position said shaving edge intermediate the edges of said handle for storage.
  • a disposable safety razor molded of a synthetic resin comprising a blade-supporting platform having guard teeth at its front and a handle attached to its bottom, and a blade-clamping cap having projections which engage openings in said platform, said platform having rearwardly converging sides which gives the platform a shape similar to that of an isosceles triangle, a generally triangular blade having rearwardly converging sides which are concavely-curved around notches in the converging sides of the platform, the rear apex of the blade having a notch which receives and engages a complementary upstanding projection at the rear apex of the platform, the sharpened edge of the blade lying next to said guard teeth at the front of the platform with the opposite ends of said sharpened edge in abutting relation with upstanding projections at opposite ends of the front of the platform, said blade-clamping cap having a triangular shape corresponding to that of the platform and being clamped over said blade with the downward projections at the rearwardly converging sides of the cap received within said not

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Packages (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Punching Or Piercing (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Knives (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
US575809A 1965-09-09 1966-08-29 Disposable single edge razor having a generally triangular head Expired - Lifetime US3409982A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB38603/65A GB1113045A (en) 1965-09-09 1965-09-09 Improvements relating to safety razor blades

Publications (1)

Publication Number Publication Date
US3409982A true US3409982A (en) 1968-11-12

Family

ID=10404525

Family Applications (1)

Application Number Title Priority Date Filing Date
US575809A Expired - Lifetime US3409982A (en) 1965-09-09 1966-08-29 Disposable single edge razor having a generally triangular head

Country Status (4)

Country Link
US (1) US3409982A (enrdf_load_html_response)
ES (3) ES330887A1 (enrdf_load_html_response)
GB (1) GB1113045A (enrdf_load_html_response)
NL (1) NL6612500A (enrdf_load_html_response)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3967375A (en) * 1973-02-26 1976-07-06 Hoffschmidt Edward J Razor construction
USD253375S (en) 1977-12-30 1979-11-06 Warner-Lambert Company Safety razor cartridge with clean-out mechanism
US4285124A (en) * 1979-09-21 1981-08-25 Diakonov Yuri G Safety razor for trimming beards and mustaches
US4411065A (en) * 1982-02-25 1983-10-25 The Gillette Company Shaving cartridge assembly
JPS60163682A (ja) * 1984-01-24 1985-08-26 ジヨルジヨ・ベレツテイ 湿式ひげそりユニツト
USD369437S (en) 1995-02-17 1996-04-30 Armbruster Joseph M Razor
US6473971B2 (en) 1999-03-17 2002-11-05 Alonso Rochin Ordaz Disposable mustache and beard stylizing razor
US20030188408A1 (en) * 1998-03-04 2003-10-09 Ronnie D. Gibbs Burnishing tool
USD807581S1 (en) 2016-03-02 2018-01-09 Jami Bolduc Personal shaver
USD956354S1 (en) 2020-11-25 2022-06-28 Matt Beck Hair cutting razor
USD961848S1 (en) * 2020-06-19 2022-08-23 The Gillette Company Llc Blade carrier for a shaving razor
USD967528S1 (en) 2020-06-19 2022-10-18 The Gillette Company Llc Shaving razor cartridge
USD977718S1 (en) 2020-06-19 2023-02-07 The Gillette Company Llc Shaving razor handle
US11648694B2 (en) 2020-06-19 2023-05-16 The Gillette Company Llc Shaving razor system
US11648695B2 (en) 2020-06-19 2023-05-16 The Gillette Company Llc Shaving razor cartridge
US11691305B2 (en) 2020-06-19 2023-07-04 The Gillette Company Llc Shaving razor blade carrier

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US856078A (en) * 1906-10-23 1907-06-04 Ross Martin Safety-razor.
US919719A (en) * 1908-09-30 1909-04-27 Hubert C Hart Razor.
US1030023A (en) * 1909-09-20 1912-06-18 John F Murray Safety-razor.
US1439059A (en) * 1920-08-10 1922-12-19 Blum Harry Safety razor
US1824252A (en) * 1930-12-03 1931-09-22 Richard G Winkler Razor
US1866434A (en) * 1930-12-22 1932-07-05 Edward G Weaver Safety razor
US1995232A (en) * 1933-08-23 1935-03-19 Joseph W Tipery Safety razor
US2077241A (en) * 1932-03-21 1937-04-13 John D Karle Safety razor
US2306890A (en) * 1940-06-14 1942-12-29 Dandy J Mayeux Safety razor
US2347595A (en) * 1942-08-18 1944-04-25 Bland Jamison C Safety razor
US2676397A (en) * 1950-12-14 1954-04-27 Bacco John De Disposable razor
US2704397A (en) * 1953-12-28 1955-03-22 Mary C Turgi Disposable razor
US2820287A (en) * 1955-10-05 1958-01-21 Clarence J Hyatt Disposable safety razor
US2911711A (en) * 1957-04-12 1959-11-10 John P Loughlin Disposable safety razor
US2983045A (en) * 1958-05-29 1961-05-09 Jr Elroy Diatikar Razor blade adapter for razors

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US856078A (en) * 1906-10-23 1907-06-04 Ross Martin Safety-razor.
US919719A (en) * 1908-09-30 1909-04-27 Hubert C Hart Razor.
US1030023A (en) * 1909-09-20 1912-06-18 John F Murray Safety-razor.
US1439059A (en) * 1920-08-10 1922-12-19 Blum Harry Safety razor
US1824252A (en) * 1930-12-03 1931-09-22 Richard G Winkler Razor
US1866434A (en) * 1930-12-22 1932-07-05 Edward G Weaver Safety razor
US2077241A (en) * 1932-03-21 1937-04-13 John D Karle Safety razor
US1995232A (en) * 1933-08-23 1935-03-19 Joseph W Tipery Safety razor
US2306890A (en) * 1940-06-14 1942-12-29 Dandy J Mayeux Safety razor
US2347595A (en) * 1942-08-18 1944-04-25 Bland Jamison C Safety razor
US2676397A (en) * 1950-12-14 1954-04-27 Bacco John De Disposable razor
US2704397A (en) * 1953-12-28 1955-03-22 Mary C Turgi Disposable razor
US2820287A (en) * 1955-10-05 1958-01-21 Clarence J Hyatt Disposable safety razor
US2911711A (en) * 1957-04-12 1959-11-10 John P Loughlin Disposable safety razor
US2983045A (en) * 1958-05-29 1961-05-09 Jr Elroy Diatikar Razor blade adapter for razors

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3967375A (en) * 1973-02-26 1976-07-06 Hoffschmidt Edward J Razor construction
USD253375S (en) 1977-12-30 1979-11-06 Warner-Lambert Company Safety razor cartridge with clean-out mechanism
US4285124A (en) * 1979-09-21 1981-08-25 Diakonov Yuri G Safety razor for trimming beards and mustaches
US4411065A (en) * 1982-02-25 1983-10-25 The Gillette Company Shaving cartridge assembly
JPS60163682A (ja) * 1984-01-24 1985-08-26 ジヨルジヨ・ベレツテイ 湿式ひげそりユニツト
JPH0687909B2 (ja) 1984-01-24 1994-11-09 ジヨルジヨ・ベレツテイ 湿式ひげそりユニツト
USD369437S (en) 1995-02-17 1996-04-30 Armbruster Joseph M Razor
US20030188408A1 (en) * 1998-03-04 2003-10-09 Ronnie D. Gibbs Burnishing tool
US6735840B2 (en) * 1998-03-04 2004-05-18 Megaware Keelguard, Inc. Burnishing tool
US6473971B2 (en) 1999-03-17 2002-11-05 Alonso Rochin Ordaz Disposable mustache and beard stylizing razor
USD807581S1 (en) 2016-03-02 2018-01-09 Jami Bolduc Personal shaver
USD961848S1 (en) * 2020-06-19 2022-08-23 The Gillette Company Llc Blade carrier for a shaving razor
USD967528S1 (en) 2020-06-19 2022-10-18 The Gillette Company Llc Shaving razor cartridge
USD977718S1 (en) 2020-06-19 2023-02-07 The Gillette Company Llc Shaving razor handle
US11648694B2 (en) 2020-06-19 2023-05-16 The Gillette Company Llc Shaving razor system
US11648695B2 (en) 2020-06-19 2023-05-16 The Gillette Company Llc Shaving razor cartridge
US11691305B2 (en) 2020-06-19 2023-07-04 The Gillette Company Llc Shaving razor blade carrier
USD1004198S1 (en) 2020-06-19 2023-11-07 The Gillette Company Llc Shaving razor
US12011842B2 (en) 2020-06-19 2024-06-18 The Gillette Company Llc Shaving razor system
USD956354S1 (en) 2020-11-25 2022-06-28 Matt Beck Hair cutting razor

Also Published As

Publication number Publication date
ES129887U (es) 1967-09-16
ES129887Y (es) 1968-03-16
ES330887A1 (es) 1967-09-16
ES129886U (es) 1967-12-16
NL6612500A (enrdf_load_html_response) 1967-03-10
GB1113045A (en) 1968-05-08
ES129886Y (es) 1968-03-16

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