US2517794A - Safety razor - Google Patents

Safety razor Download PDF

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Publication number
US2517794A
US2517794A US569458A US56945844A US2517794A US 2517794 A US2517794 A US 2517794A US 569458 A US569458 A US 569458A US 56945844 A US56945844 A US 56945844A US 2517794 A US2517794 A US 2517794A
Authority
US
United States
Prior art keywords
blade
handle
handle part
plunger
spring
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
US569458A
Other languages
English (en)
Inventor
Law Edgar Harold
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.)
ROLLS RAZOR Ltd
Original Assignee
ROLLS RAZOR Ltd
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 ROLLS RAZOR Ltd filed Critical ROLLS RAZOR Ltd
Application granted granted Critical
Publication of US2517794A publication Critical patent/US2517794A/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
    • B26B21/16—Safety razors with one or more blades arranged transversely to the handle involving blades with only one cutting edge

Definitions

  • the invention relates tc safety razors of the kind in which the blade is removablyattached to a handlewhich for the purpose, has a jaw-like gripping head, in which the blade is adapted to be engaged and held in position by a pressure member, the invention being more particularly applicable to the case where a comparatively rigid razor blade is used in a contra-distinction to what is known asa wafer blade.
  • the object of the invention is to provide an improved form of handle for this ⁇ kind of razor.
  • the practice in constructing the handle, the practice .has been to make the gripping head as one piece and the handle proper as a separate piece, the two being screwed or otherwise joined together, the handle proper being provided with a bore accommodating a spring-pressed ball which projects into the gap in the gripping head so as to press upon the blade when the latter is inserted in the head and which is restrained against total ejection by a displacement of the metal at the end of the handle.
  • One of the objects of the present invention is to provide a construction overcoming these drawbacks.
  • a further object is to provide a construction which is more robust and serviceable than those of the earlier form, and one which presents no serious manufacturing diiculties.
  • the member adapted for applying pressure ,to the blade when inserted in the gripping head takes the form of a rod or plunger which is accommodated within the .handle proper and is movable for Asolid or resilient .engagement with the blade.
  • Figure l is a longitudinal sectional viewgof ⁇ the handle acconding ⁇ to the first embodiment, the parte being 4shown in ⁇ a :position ready for application of the blade;
  • Figure 2 isa longitudinalsection partly in elevation of ⁇ :the handlaindicatingthe position as- 55 ing the blade ⁇ in rearwardly. If ⁇ it is not suIii-1 3 Claims. (Cl. 30-62) sumed by theparts when the blade is applied and secured;
  • Figure 3 is a view similar to that ⁇ of A Figure 2, illustrating Athe second embodiment
  • Figure 4 is a view again similar to that of Figure 2, but illustrating the third embodiment.
  • ⁇ the gripping head l and the handle proper 2 are made in one piece as by machining from a ⁇ metal blank.
  • the handle proper is divided about midway between its ends into two separa-te parts 3 and 4, the part 3 (the upper part) carrying the gripping "head I having a bore 5 which communicates with the wedge-like gap ⁇ l inthe head and accommodates, with a sliding lit, a thrust rod 'l ⁇ the upper extremity of which is preferably rounded as indicated at 8 and the lower end of which is engaged in a recess 9 in the top of the other part 4 (the lower part) of the handle proper.
  • a screwethreaded recess l adapted to receive a screw-threaded reduced portion Il at the upper end of the handle part 4.
  • the open lower end of therecess ill is preferably enlarged as indicated at I2, so that when the two parts of the handle are ⁇ fully screwed together, the enlargement will Vreceive and shield the shoulder ⁇ I3 formed at the junction of the screw-threaded portion Il of the handle ⁇ part l with the remainder ofthe latter. AThis is clearly shown in Figure 2.
  • the :thrust rod A'i is of such length that when the handle part 4 is screwed fully into the handle part 3, the upper rounded extremity il of the rod ⁇ will project into the gap 6 in the gripping head l ⁇ (asindica-ted in Figure '2), while ⁇ when the handle part 4 is unscrewed to some extent, the extremity 8 lof the rod will be withdrawn into the bore 5 '(as indicated in Figure 1).
  • the outer surfaces of the two handle parts 3 and 4 are lmilled or otherwise roughened as indicated at I4 and I5-'in Figure2 ⁇ to facilitate a gripbeing obtained ⁇ thereon ⁇ with the lingers ⁇ both in shaving and for screwing ⁇ one part ⁇ relatively to the other.
  • the rounded end 8 of the thrust rod I will be moved into the gap 5 in the gripping head I so as to engage with the undersurface of the blade I6 and press the upper surface of the blade against the upper limb of the gripping head7 the result being that the blade will be held firmly but detachably in position.
  • the lower end of the thrust rod I may fit in the recess 9 with a detachable nt and both extremities of the rod may be rounded so that.
  • the thrust rod 'I is shorter than before and takes the form of a plunger the lower end of which is provided with a flange I'I fitting freely in an enlargement I8 of the bore 5.
  • the enlargement I8 provides accommodation for a compression spring I9 the upper end of which bears against the iiange, while the lower end fits in the recess 9 in the screw-threaded portion II of the lower handle part 4.
  • the plunger 'I is constantly urged upwardly under the influence of the spring I9 so that the upper rounded extremity 8 of the plunger always projects into the gap 6 of the gripping head, the degree of such projection being limited by engagement of the flange I'I with the upper end 20 of the enlargement I8.
  • the degree of projection is not too pronounced, the rear portion of the razor blade I 6 can be engaged in the gap 6 of the gripping head I by a simple sliding action ⁇ while the two handle parts 3 and 4 remain fully screwed together, this being permitted by the cam action exerted by the blade on the rounded extremity 8 of the resiliently mounted plunger 'I.
  • the pressure of the spring I9 on the plunger 'I varies according to the extent to which the lower handle part 4 is screwed into the upper handle part 3.
  • a springpressed plunger 'I is also used, but in this case the pressure of the spring I9 on the plunger is constant, that is to say, the magnitude of its pressure in the plunger does not depend upon the position of the two handle parts 3 and 4 relatively to each other.
  • the plunger not only extends through the bore 5 in the upper handle part 3, but is lengthened to extend with a sliding iit, through a bore 2
  • the bore 2l opens into a cavity 22 of enlarged diameter which freely accommodates the flange I 'I at the lower end of the plunger and which extends to the base of the lower handle part 4.
  • the cavity 22 is screwthreaded to receive a screw-threaded plug 23.
  • the gripping head is shown made integrally with the upper handle part 3, it will be understood that it can, if desired, be made as a separate member secured to the said part.
  • a safety razor blade holder for a blade with a single cutting edge comprising a handle divided into two parts, namely an upper part and a lower part. the said two parts having screw-threaded engagement with each other.
  • the upper end of the rod will project into the said recess and, when the blade is in position in the recess, will engage directly with the under-surface of the blade so as to press the upper surface of the blade against the said overhanging jaw, thereby retaining the blade in the said gripping head, the lower handle part being provided with a recess, and a spring accommodated therein in direct contact with said rod.
  • a safety razor blade holder in accordance with claim l wherein the lower end of the upper fhennfdle part is also provided with a recess, the recess of the lower handle part being at the upper enthereof and complementary to the recess of the Iupper handle part, a part of the spring being 'c'commodated in each recess.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Knives (AREA)
  • Scissors And Nippers (AREA)
US569458A 1944-01-26 1944-12-23 Safety razor Expired - Lifetime US2517794A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB246512X 1944-01-26

Publications (1)

Publication Number Publication Date
US2517794A true US2517794A (en) 1950-08-08

Family

ID=10215078

Family Applications (1)

Application Number Title Priority Date Filing Date
US569458A Expired - Lifetime US2517794A (en) 1944-01-26 1944-12-23 Safety razor

Country Status (6)

Country Link
US (1) US2517794A (enrdf_load_stackoverflow)
BE (1) BE463537A (enrdf_load_stackoverflow)
CH (1) CH246512A (enrdf_load_stackoverflow)
DE (1) DE803463C (enrdf_load_stackoverflow)
FR (1) FR912040A (enrdf_load_stackoverflow)
GB (1) GB570737A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12304094B2 (en) 2023-03-22 2025-05-20 Andrew Sgarra Shaving instrument

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1160542A (en) * 1965-04-29 1969-08-06 Wilkinson Sword Ltd Improvements in and relating to Shaving Units and Dispensers Therefor
ES400641A1 (es) * 1971-03-15 1975-01-16 Gillette Co Una disposicion de mango de maquina de afeitar.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US775379A (en) * 1904-02-16 1904-11-22 August Mueller Safety-razor.
US1254037A (en) * 1917-05-17 1918-01-22 A C Penn Inc Safety-razor.
US1530331A (en) * 1924-06-28 1925-03-17 Salerni Piero Mariano Safety device for razor blades and to safety razors
US2037849A (en) * 1933-07-28 1936-04-21 Darwins Ltd Safety razor
US2244909A (en) * 1939-04-07 1941-06-10 Harry B Griner Razor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US775379A (en) * 1904-02-16 1904-11-22 August Mueller Safety-razor.
US1254037A (en) * 1917-05-17 1918-01-22 A C Penn Inc Safety-razor.
US1530331A (en) * 1924-06-28 1925-03-17 Salerni Piero Mariano Safety device for razor blades and to safety razors
US2037849A (en) * 1933-07-28 1936-04-21 Darwins Ltd Safety razor
US2244909A (en) * 1939-04-07 1941-06-10 Harry B Griner Razor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12304094B2 (en) 2023-03-22 2025-05-20 Andrew Sgarra Shaving instrument

Also Published As

Publication number Publication date
CH246512A (fr) 1947-01-15
GB570737A (en) 1945-07-19
DE803463C (de) 1951-04-02
FR912040A (fr) 1946-07-26
BE463537A (enrdf_load_stackoverflow)

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