US3871075A - Safety razor with a plural strip blade magazine - Google Patents

Safety razor with a plural strip blade magazine Download PDF

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Publication number
US3871075A
US3871075A US422730A US42273073A US3871075A US 3871075 A US3871075 A US 3871075A US 422730 A US422730 A US 422730A US 42273073 A US42273073 A US 42273073A US 3871075 A US3871075 A US 3871075A
Authority
US
United States
Prior art keywords
strip
magazine
blade
strips
separator
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
US422730A
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English (en)
Inventor
Harry Pentney
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 US3871075A publication Critical patent/US3871075A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B26B21/26—Safety razors with one or more blades arranged transversely to the handle of the continuous ribbon type

Definitions

  • a blade magazine for a safety razor of the so-called ribbon type comprises two elongated blade strips and guide surfaces for passing successive, lengths of each strip from a storage coil to a take-up coil.
  • the guide surfaces further defining the shaving use section of each strip being such that the two blade strips are disposed in parallel planes with their respective cutting edges parallel and in staggered relationship to one another, so that the cutting edges of the two blade strips can both engage the skin to be shaved and will follow one another in tandem relationship during the shaving operation.
  • a particular feature of the invention consists in the means provided to support those portions of the blade strips which are in position for use and to ensure that they are in the intended relationship to one another and to the other parts of the razor.
  • FIG. 1 is a front view of the magazine
  • FIG. 2 is a fragmentary front view on anenlarged scale of the magazine with the front cover removed;
  • FIG. 3 is a plan view of the portion shown in FIG. 2;
  • FIG. 4 is a rear view of the magazine
  • FIG. 5 is a fragmentary sectional view on an enlarged scale taken on the line A-A of FIG. 4.
  • the magazine illustrated is similar in many respects to the magazine described and illustrated in the abovementioned specification and no detailed description will be given of many of the features of construction and use which are common to the two magazines, the following description being largely confined to those features of the magazine illustrated which are not present in the magazine of the earlier specification.
  • the magazine illustrated comprises a body indicated generally by the reference numeral 1, enclosed by a shell or front cover 2, these parts being moulded from a suitable plastics material.
  • Two blade strips 3 and 4 are drawn from respective storage coils 5 and 6 disposed side by side within the body.
  • the two blade strips pass in superimposed parallel relation around a guide surface 7 formed at one end of the body and thereafter around a similar guide surface 8 at the opposite end of the body, the substantially straight lengths of the strips which at any moment extend between the curved surfaces 7 and 8 being exposed for use.
  • After passing around surface 8 the strips are wound up together on a take-up reel 9 which is rotatably mounted in the body below the storage coils and is adapted for operative engagement with a blade advancing lever in the razor handle (not shown).
  • Actuation of this lever is effective to rotate reel 9, thereby advancing both blade strips so that fresh lengths of them are brought into position for use between guide surfaces 7 and 8.
  • Reel 9 is connected through step-down gearing to an indicator disc 10 bearing indicia which are exposed through a window 11 in front cover 2 and which serve to indicate the number of useable lengths of the blade strips that have not yet been drawn past the position of use.
  • the portions of the blade strips which are exposed in position for use lie between a backing surface 12, constituted by the top surface of the body 1, and the forwardly projecting arms of four brackets 13 formed integrally with the body and spaced apart along the exposed lengths of the blade strips.
  • the sharpened front edges of the blade strips project forwardly towards a guard surface 14, also formed integrally on the body, an opening 15 in the body between the guard surface and the cutting edges allowing the escape of shaving debris.
  • separator 16 Interposed between the two blade strips is a separator 16, formed by a strip of aluminium or plastics material from 0.008 to 0.025 inch in thickness whose ends extend around the guide surfaces 7 and 8, as most clearly shown in FIG. 2.
  • a support 17 Disposed above the upper blade strip is a support 17, also formed of aluminium or plastics strip from 0.008 to 0.025 inch in thickness, the ends of this support being located beneath the two outermost brackets 13.
  • Separator 16 and support 17 are each formed with a pair oflugs (one of which is shown at 18 in FIG.
  • the separator 16 and support 17 extend forwardly above the blade strips 4 and 3 respectively to within a very short distance of the cutting edges of the blade strips.
  • the blade strips may have a thickness of some 0.0015 inch only (and a width of some 0.2 inch) and it has been found that to provide adequate support for such easily flexible blades they should be supported against the forces encountered in shaving at a distance of not more than about 0.030 inch from their cutting edges.
  • the edges of those members are chamfered as indicated at 20.
  • the upper part of the front edge of separator 16 is recessed as indicated at 21 to reduce the risk of shaving debris becoming wedged between the separator and the upper blade strip 3.
  • the backing surface 12 of the body and those surfaces of the separator 16 and of the support 17 which engage the blade strips may be formed with Iongitudinally extending grooves.
  • a safety razor blade magazine comprising two elongated blade strips, each strip having the portion adjacent one end thereof wound upon itself to form a storage coil, rotatable take-up means to which the other ends of the two blade strips are secured and upon which they can be wound up, means defining paths of travel for the two-strips from the respective storage coils to the take-up means, each of said paths including a section along which a length of the respective blade strip is exposed for shaving use, said path-defining means being such that the said lengths of the two blade strips are disposed in parallel planes with their respective cutting edges parallel and in staggered relationship to one another, so that the cutting edges of the two blade strips can both engage the skin to be shaved and will follow one another in tandem relationship during the shaving operation.
  • said path-defining means include a stationary backing surface engaging and supporting one face of the said exposed length of a first one of the blade strips, and a separatorstrip disposed between and parallel to the exposed lengths of the two blade strips and engaging the adjacent faces of those strips, the separator strip being restrained against movement in its ownplane but capable of limited movement perpendicular to that plane and theplanes of the exposed lengths of the blade strips.
  • a magazine in accordance with claim 2 in which the said stationary backing surface has at its ends curved guide surfaces around which the blade strips 5.
  • a magazine in accordance with claim 2 in which the backing surface and the separator strip engage the opposite faces of the said first one of the blade strips to within a distance of not more than 0.030 inchfrom its cutting edge, the edge of the separator strip adjacent to the cutting edge being so shaped as to lie clear of the surface being shaved when the magazine is in use.
  • said path-defining means further include a support strip disposed parallel to the backing surface, the exposed lengths of the two blade strips and the separator strip, the support strip engaging the face of the second blade strip which is opposite to that engaged by the separator strip, the support strip being restrained againstmovement in its own plane but capable of limited movement perpendicular to that plane.
  • a magazine in accordance with claim 9 in which the separator. strip and the support strip each has a thickness in the range from 0.008 to 0.025 inch.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
  • Details Of Cutting Devices (AREA)
US422730A 1972-12-12 1973-12-07 Safety razor with a plural strip blade magazine Expired - Lifetime US3871075A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5724972A GB1391370A (en) 1972-12-12 1972-12-12 Safety razors

Publications (1)

Publication Number Publication Date
US3871075A true US3871075A (en) 1975-03-18

Family

ID=10478737

Family Applications (1)

Application Number Title Priority Date Filing Date
US422730A Expired - Lifetime US3871075A (en) 1972-12-12 1973-12-07 Safety razor with a plural strip blade magazine

Country Status (8)

Country Link
US (1) US3871075A (cs)
JP (1) JPS5047747A (cs)
AR (1) AR199131A1 (cs)
DE (1) DE2361608A1 (cs)
ES (1) ES421356A1 (cs)
FR (1) FR2330256A5 (cs)
GB (1) GB1391370A (cs)
SE (1) SE388559B (cs)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD388540S (en) * 1996-12-04 1997-12-30 Haim Ramar Razor having a rotatable triangular head

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3540125A (en) * 1968-06-06 1970-11-17 Eversharp Inc Double edge ribbon-razor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3540125A (en) * 1968-06-06 1970-11-17 Eversharp Inc Double edge ribbon-razor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD388540S (en) * 1996-12-04 1997-12-30 Haim Ramar Razor having a rotatable triangular head

Also Published As

Publication number Publication date
ES421356A1 (es) 1976-06-16
FR2330256A5 (fr) 1977-05-27
SE388559B (sv) 1976-10-11
DE2361608A1 (de) 1974-06-20
JPS5047747A (cs) 1975-04-28
GB1391370A (en) 1975-04-23
AR199131A1 (es) 1974-08-08

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