US1989576A - Safety razor - Google Patents

Safety razor Download PDF

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Publication number
US1989576A
US1989576A US609693A US60969332A US1989576A US 1989576 A US1989576 A US 1989576A US 609693 A US609693 A US 609693A US 60969332 A US60969332 A US 60969332A US 1989576 A US1989576 A US 1989576A
Authority
US
United States
Prior art keywords
blade
guard
grooves
boss
hair
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
US609693A
Other languages
English (en)
Inventor
Ward David 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.)
Thomas Ward & Sons Ltd
Original Assignee
Thomas Ward & Sons 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 Thomas Ward & Sons Ltd filed Critical Thomas Ward & Sons Ltd
Application granted granted Critical
Publication of US1989576A publication Critical patent/US1989576A/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
    • B26B21/18—Safety razors with one or more blades arranged transversely to the handle involving blades with two cutting edges

Definitions

  • An object of my invention accordingly, is the provision of an improved safety razor construction having the capabilities referred to.
  • Other objects of the invention consist in the provision of improved combinations of parts and details of construction, as will be more fully described hereinafter.
  • the blade is clamped at its centre between a boss on the guard member and the cover, leaving its edges free and spaced away from the guard, which has open-ended longitudinal grooves, parallel to the edges of the blade, and lying within the space covered by the blade. I provide these grooves with sufficient depth and cross-sectional area to prevent accumulations therein from impeding the proper desired flexing of the blade, as described.
  • Figure 1 shows the parts of a safety razor disassembled.
  • Figure 2 is a corresponding view of the parts 5 assembled.
  • Figure 3 is a plan view of the guard or body member.
  • Figure 4 is a corresponding perspective view.
  • Figure 5 is a plan view of the blade used.
  • handle 1 of a safety razor may be formed in any desired way, either of metal, a phenol condensation product or the like, or again, of metal covered with a phenol condensation product. 15
  • the guard'or body member 2 has the usual holes 3 in it for the reception of the pegs 4 on the cover 5 for the indexing of the blade '7.
  • This cover 5 also has a threaded spindle 6 co-operating' with a threaded socket 8 of the handle 1.
  • the 20 guard 2 may, preferably, be made of a, phenol condensation product, a cellulose composition, vulcanite or the like heat material having heat insulation properties, and the body 5 may also be formed of similar material, or again these two 25 elements 2 and 5 may be metal covered with such material.
  • the guard 2 has grooves or channels 9 provided in its upper face extending longitudinally of the guard adjacent its edges. face of this guard is preferably uniplanar; that is to say, that the surfaces 10, 11, 12 lie in the same plane, whilst the size of these channels 9 is such that the blade when mounted as shown in Figure 2, does not quite overlap'the channels.
  • the side surfaces 13 of the guard are continuous, that is, are not provided with separated teeth, between which lather and hair can escape. These surfaces are adapted to engage the skin, in advance of the blade edge, at an angle, as shown. 40 These surfaces preferably are provided with shallow oblique grooves, as shown, so as to tend to incline the hairs presented to the blade edge at an angle.
  • the surface 11 of the guard is provided with a central boss 14, preferably cylindrical, between which and the cover 5 the blade is clamped. It will be seen that the boss engages the central portion only of the blade, which is flexed over the boss, by the concave inner surface of the cap, so that a considerable portion of the blade overhangs the grooves 9, as shown.
  • Grooves 9 are preferably semi-circular in crosssection, so as to provide a free and unimpeded entry therein for hair, soap, etc., released from the blade, in shaving.
  • the grooves 9 are sufllciently deep and broad to permit hair and soap from accumulating therein, during shaving, without impeding the desired flexure of the blade towards the grooves. It being, of course, understood, that the accumulated hair and lather will be cleared after each one or several operations. It will be noted that this can be eflected byputting the razor under a tap of running water, without unscrewing it. I have discovered, by experiment, that such flexure is actually prevented in other constructions of razor, in which grooves of suflicient area and depth are not provided, because of the impeding of the blades movement by the accumulated material underneath the blade. I
  • boss 14 in cylindrical form, or the like, provides spaces across surface 11, on opposite sides of boss 14, between surface 11 and the cap 5, through which the hair and lather may be cleared from one channel 9 to the other, as well as through the channels 9.
  • a safety razor the combination of a guard towards the face, while having a sumcient area member having a central cylindrical boss and upstanding continuous side edge portions separated from said boss by longitudinal semi-circular grooves, open at both ends, a thin flexible blade, having two parallel longitudinal edges, a cover member, and means for clamping the blade between said cover member and boss, said cover member being shaped to contact against the greater part of the adjacent blade surface and to flex it concavely over said grooves, with the blade edges adjacent to said side edge portions, but I free to flex further towards and into said grooves, said grooves being of suflicient depth and area to contain the hair and soap resulting from a shaving operation without such material preventing such flexure of the blade towards the same as might be caused by the blade edge meeting an obstruction in shaving, and said side edge portions of the guard member having face-engaging outer surfaces, and said central boss engaging the central portion of the blade only, said guard member having a plane longitudinal surface intermediate said grooves, from which said boss extends, to provide transverse open spaces on

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
US609693A 1931-08-25 1932-05-06 Safety razor Expired - Lifetime US1989576A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1989576X 1931-08-25

Publications (1)

Publication Number Publication Date
US1989576A true US1989576A (en) 1935-01-29

Family

ID=10895431

Family Applications (1)

Application Number Title Priority Date Filing Date
US609693A Expired - Lifetime US1989576A (en) 1931-08-25 1932-05-06 Safety razor

Country Status (2)

Country Link
US (1) US1989576A (fr)
FR (1) FR736963A (fr)

Also Published As

Publication number Publication date
FR736963A (fr) 1932-12-05

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