US3293744A - Single razor cap opening and blade adjusting means for sectional cap type razors - Google Patents

Single razor cap opening and blade adjusting means for sectional cap type razors Download PDF

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Publication number
US3293744A
US3293744A US450927A US45092765A US3293744A US 3293744 A US3293744 A US 3293744A US 450927 A US450927 A US 450927A US 45092765 A US45092765 A US 45092765A US 3293744 A US3293744 A US 3293744A
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US
United States
Prior art keywords
razor
cap
blade
cam
guard
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
US450927A
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English (en)
Inventor
Kuhnl Leopold Karl
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.)
Eversharp Inc
Original Assignee
Eversharp Inc
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 Eversharp Inc filed Critical Eversharp Inc
Priority to US450927A priority Critical patent/US3293744A/en
Priority to GB14915/66A priority patent/GB1115403A/en
Priority to BE679715D priority patent/BE679715A/xx
Priority to SE5319/66A priority patent/SE317299B/xx
Priority to NO162728A priority patent/NO119303B/no
Priority to FR58838A priority patent/FR1477205A/fr
Priority to NL6605570A priority patent/NL6605570A/xx
Application granted granted Critical
Publication of US3293744A publication Critical patent/US3293744A/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
    • B26B21/30—Safety razors with one or more blades arranged transversely to the handle of the type carrying pivotally-mounted caps
    • B26B21/32—Safety razors with one or more blades arranged transversely to the handle of the type carrying pivotally-mounted caps in razors involving double-edged blades

Definitions

  • This invention relates to safety razors in general and particularly to that class popularly referred to as an adjustable double edge-type. More particularly, the present invention is directed to a new and improved double edge razor design having a single operating knob for opening and closing the cap sections of the razor as well as adjusting the blade angle relative to a guard.
  • adjustable razors which operate on the principle of shifting the blade relative to the guard to provide a different angle of blade exposure have received notable acceptance in the industry because of the rather remarkable advantages they provide.
  • One of the most commendable aspects of adjustable razors is that they may be manufactured in mass quantity while yet satisfying the shaving requirements of a variety of individuals as may be dictated by the individual differences in their skin and beard. Uniform shaving comfort by all is thus obtained with a single razor design.
  • adjustable razors Notwithstanding the favorable aspects of adjustable razors in general, they have not been free from certain shortcomings, especially those razors of the double edge design.
  • one mechanism is provided to perform the opening and closing function while an additional mechanism is provided to obtain the adjustment of the blade edge angle.
  • the use of two separate mechanisms to perform each of these functions increases the cost of the razor as well as being more cumbersome as it requires separate hand and finger movements for each function.
  • Other problems and disadvantages of an equally objectionable nature have prevailed prior to the present development.
  • the adjustable razor of the present invention includes a tubular handle assembly having a platform-like guard member joined at one end.
  • a spider assembly mounting the usual pivoting cap sections has the spider stem slidably received in the tubular handle.
  • Suitable means of any known type coacts with the cap sections to tension and grip the razor blade adjacent its marginal edges. Adjustment of the cap sections in their positions to vary the distance between the guard and the marginal edge of the cap section is provided by a unique notched cam arrangement permitting incremental axial adjustment of the spider assembly relative to the handle assembly and hence permitting incremental adjustment of the blade angle.
  • Such adjustment is accomplished by rotating a cam follower over a notched cam surface causing the spider stem to shift axially with the direction of movement dependent upon the direction of rotation. is also formed in the cam surface to facilitate quick opening of the cap sections as the cam follower is moved beyond the gradual or adjusting rise. Suitable indicia means such as a reference mark is provided topermit instant selection of the preferred angle of blade adjustment in order to readily meet the particular needs of the individual shaver.
  • the ca m follower or cam may be carried in a knob on the razor handle, and thus serves multiple functions,
  • the razor can be opened, closed and A sharp rise adjusted as described above to provide a wide variety of blade angles. This permits the user to change blades, adjust and flush the razor with unequaled ease. Additional features of equal importance to those stated above will become apparent when the objects and detailed description are considered.
  • FIG. 1 is a perspective view of the razor of the present invention with the cap sections closed and the razor blade omitted;
  • FIG. 2 is an enlarged top plan view of the razor of FIG. 1 with the cap sections open and the razor blade omitted;
  • FIG. 3 is a side elevational view of the razor of FIG. 1 with portions of the handle broken away and having the razor blade inserted and the adjustment set on the reference 1;
  • FIG. 4 is a view similar to FIG. 3 with the adjustment set at the fully opened or reference 9 position;
  • FIG. 5 is a longitudinal cross section taken through the handle assembly
  • FIG. 6 is an exploded perspective of the razor of FIG. 1;
  • FIG. 7 is a cross sectional view taken through the razor head and illustrating the handle and spider stem fragmentarily;
  • FIG. 8 is a planar illustration of the cam sleeve.
  • the adjustable razor of the present invention is indicated generally by the reference numeral 10 and includes the basic elements as follows: a handle assembly 11; spider assembly 12, including the cap sections 13 and 14; and, an operating mechanism 15.
  • a handle assembly 11 the handle assembly 11
  • spider assembly 12 including the cap sections 13 and 14
  • an operating mechanism 15 the operating mechanism 15.
  • the spider assembly 12 includes the spider stem 16 attached to the spider 17 with spider arms 18 and 19 disposed at opposite ends.
  • the spider arms 18 and 19 pivotally support the cap sections 13 and 14 for opening and closing movement as the ends engage the guard in a axially extending key 23 formed integrally thereon for purposes to become apparent.
  • the handle assembly 11 further includes a guard 27 and a platform-type spring indicated gneerally at 28 mounted on the upper end of the handle 20.
  • the platform spring 28 includes blade engaging sections 29 and 30 disposed in substantial parallelism with the marginal edges of the cap sections 13 and 14 and the guard 27.
  • the adjusting means is composed of three main elements including a cam sleeve 24, cam follower sleeve 25 and a knob or collar 26.
  • a spider biasing spring 31, washer nut 32 and trim cap 33 serve to complete the basic razor assembly. The manner in which the basic parts are assembled and coact will be described hereinafter as well as the more important constructional details.
  • the spider stem 16 is positioned within the cylindrical bore 34 formed in the handle 20, which bore includes a section of reduced diameter 35 formed in the lower section of the handle.
  • the bore of reduced diameter 35 forms at the junction with the enlarged bore 34, a radially extending shoulder 36.
  • a radially extending shoulder 37 is also provided on the spider stem 16 and is in axial opposition to the shoulder 36.
  • a metal collar 38 is provided at the junction of the handle 20 and guard 27 and is provided with an internal bore having a bearing area for the spider stem 16.
  • the metal collar 38 facilitates rigid attachment of the guard 27 and platform spring 28 to the handle 20 as well as trimming the handle 20 at its upper extremity.
  • the lower end of the spider stem 16 is threaded as at 39 to receive the washer nut 32 which holds the adjustment knob 26 on the stem 16 and also limits movement of the spider stem 16.
  • the cam follower sleeve is press fitted or secured in any suitable fashion within the knob 26.
  • Spring 31 serves to urge the cam follower surface 40 (also shown in FIG. 6) in engagement with the cam surface indicated generally at 41 on the cam sleeve 24. Relative rotation between the cam sleeve 24 and handle 20 is prevented by the integral key 23 on the handle being received in a suitable key way 42 in the cam sleeve 24.
  • cam surface 41 on the cam sleeve 24 contains diverse rises or angles as may be best appreciated by referring to planar layout in FIG. 8.
  • cam 24 includes a stop shoulder 43 which serves to limit the rotation of the cam follower sleeve 25 in one direction. Adjacent the shoulder 43 the cam surface 41 contains a gentle rise 44 defined by a series of step-like formations or notches 45 each of which is increasing in elevation relative to the adjacent notch as it progresses up the rise 44.
  • the cam surface 41 merges with a sharp rise as indicated at 46 which terminates in a flat bottom 47, defined on the opposite side by an axially extending shoulder 48.
  • the cam follower may ,conf'orm substantially to the shape of the fiat bottom 47 and the sharp rise 46 in the cam surfaces 41 so that when the follower 40 on the cam follower sleeve 25 engages the wall or the bottom 47 the spring 31 extends the spider stem 16 to move the cap sections to the open position as illustrated in FIG. 2.
  • a razor blade may be inserted or removed at this time in a well known manner.
  • a double edge blade of conventional design is inserted as described above, and as the cam follower 40 on the cam follower sleeve 25 is rotated for reception in one of the notches 45, for example, to the notch positioned in axial alignment with the reference number 9 in the cam sleeve 24, the cap sections 14 and 15 assume the position shown in FIG. 4 to give maximum blade clearance.
  • the angle formed by the intersection of a plane perpendicular to the guard and a plane defined by the edge of the guard 27 and the razor blade edge is at a minimum as represented by the angle A.
  • FIG. 7 A razor blade 50 of conventional double edge design is positioned over the spider 17 and the cap sections 13 and 14 brought to the closed position by rotation of the knob 26 so that the marker 49 is aligned at any position on or between the references 1 or 9.
  • the cap sections 13 and 14 are held in the closed position through the downwardly projecting arms at opposite ends being engaged with the usual slots at the end of the guard, such co-operation being old in the art. In this manner, a downward force is exerted on the marginal edges of the razor blade 50 to adjust the blade angle in a well known manner to meet the needs of the individual.
  • a guard member may be shifted relative to the bandle and/or cap sections on a razor to selectively change the angle of blade exposure by a cam adjustment of the type described.
  • a safety razor having a handle means, guard means, a cap means carried on said handle means for opening and closing movement relative to said guard means, and spring means acting on said cap means to afford movement thereof
  • said adjustment means including a ca m follower and a cam means urged into mutual engagement by said spring means, said cam means having a series of notchlike formations disposed at difierent elevations and said cam follower being adapted to be selectively moved along said notch-like formations to permit relative incremental adjustment between said guard and cap means in the closed position of said cap means, said cam means further including a sharp rise to receive said cam follower to 0b- 10 tain said opening and closing movement.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mirrors, Picture Frames, Photograph Stands, And Related Fastening Devices (AREA)
  • Gears, Cams (AREA)
US450927A 1965-04-26 1965-04-26 Single razor cap opening and blade adjusting means for sectional cap type razors Expired - Lifetime US3293744A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US450927A US3293744A (en) 1965-04-26 1965-04-26 Single razor cap opening and blade adjusting means for sectional cap type razors
GB14915/66A GB1115403A (en) 1965-04-26 1966-04-04 Adjustable razor
BE679715D BE679715A (xx) 1965-04-26 1966-04-19
SE5319/66A SE317299B (xx) 1965-04-26 1966-04-19
NO162728A NO119303B (xx) 1965-04-26 1966-04-25
FR58838A FR1477205A (fr) 1965-04-26 1966-04-25 Rasoir réglable
NL6605570A NL6605570A (xx) 1965-04-26 1966-04-26

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US450927A US3293744A (en) 1965-04-26 1965-04-26 Single razor cap opening and blade adjusting means for sectional cap type razors

Publications (1)

Publication Number Publication Date
US3293744A true US3293744A (en) 1966-12-27

Family

ID=23790090

Family Applications (1)

Application Number Title Priority Date Filing Date
US450927A Expired - Lifetime US3293744A (en) 1965-04-26 1965-04-26 Single razor cap opening and blade adjusting means for sectional cap type razors

Country Status (6)

Country Link
US (1) US3293744A (xx)
BE (1) BE679715A (xx)
GB (1) GB1115403A (xx)
NL (1) NL6605570A (xx)
NO (1) NO119303B (xx)
SE (1) SE317299B (xx)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD765912S1 (en) * 2016-03-23 2016-09-06 Phan Thi Minh Vinh Razor handle
USD844897S1 (en) * 2015-12-16 2019-04-02 Dash Direct Ltd. Razor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2795846A (en) * 1954-12-03 1957-06-18 Jack R Wertheimer Safety razor having a sectional cap and operating means for said cap
US2934821A (en) * 1957-06-26 1960-05-03 Gillette Co Quick-opening toggle razor
US3056199A (en) * 1960-02-17 1962-10-02 Gillette Co Safety razor with adjustable blade exposure

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2795846A (en) * 1954-12-03 1957-06-18 Jack R Wertheimer Safety razor having a sectional cap and operating means for said cap
US2934821A (en) * 1957-06-26 1960-05-03 Gillette Co Quick-opening toggle razor
US3056199A (en) * 1960-02-17 1962-10-02 Gillette Co Safety razor with adjustable blade exposure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD844897S1 (en) * 2015-12-16 2019-04-02 Dash Direct Ltd. Razor
USD765912S1 (en) * 2016-03-23 2016-09-06 Phan Thi Minh Vinh Razor handle

Also Published As

Publication number Publication date
NL6605570A (xx) 1966-10-27
SE317299B (xx) 1969-11-10
NO119303B (xx) 1970-04-27
BE679715A (xx) 1966-10-19
GB1115403A (en) 1968-05-29

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