US1905699A - Safety razor - Google Patents

Safety razor Download PDF

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Publication number
US1905699A
US1905699A US434047A US43404730A US1905699A US 1905699 A US1905699 A US 1905699A US 434047 A US434047 A US 434047A US 43404730 A US43404730 A US 43404730A US 1905699 A US1905699 A US 1905699A
Authority
US
United States
Prior art keywords
blade
slot
guard
portions
enlargements
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
US434047A
Other languages
English (en)
Inventor
Henry J Gaisman
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 Safety Razor Co
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
Priority to BE377788D priority Critical patent/BE377788A/xx
Application filed by Gillette Safety Razor Co filed Critical Gillette Safety Razor Co
Priority to US434047A priority patent/US1905699A/en
Priority to GB5079/31A priority patent/GB364901A/en
Priority to FR712242D priority patent/FR712242A/fr
Application granted granted Critical
Publication of US1905699A publication Critical patent/US1905699A/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

  • the present invention relates to that class of safety razors in which two clamping members, a guard member and a blade back ng member, are provided, and a thin fleX1ble blade is clamped between the guard and backing members to retain the cutting edges of the blade in shaving relation to the guard teeth.
  • the invention pertains more particularly to that type of the above-mentioned class of safety razors wherein the blade cooperates with one of the clamping members to retain the blade in shaving relation thereto, and the blade also cooperates with the other clamping member to retain the latter in proper relation to the blade for shaving purposes.
  • a safety razor of this type is described in U. S. Letters Patent #1,633,739, granted to me on June 28, 1927. i
  • the main object of the present invention is to so design the blade positioning means on one of the clamping members of the razor that its location may be varied, at will, by the blade holder manufacturer so that, in case an unauthorized blade manufacturer should produce blades having apertures at corresponding location to said positioning means that have been made by the original manufacturer at one period, the latter manufacturer, by shifting or varying the contour of the positioning means at another period, would preclude the use in the holder of such unauthorized blades, because the apertures would not register with or fit the last-mentioned posi-- pointed out in the appended claims and illustrated in the accompanying drawings, it being understood that many changes may be madein the size and proportion of the several 1930. Serial N0. 484,047.
  • Figure 1 is an end view of a razor 'constructed in accordance with the present invencontours difiering from those illustratedin Figs. 1 to 5, inclusive, of the drawings; and Figs. 9 to 16, inclusive, are top plan views of guard members having embodied therein blade positioning means of still other contours and locations.
  • the numeral 20 indicates the guard member, the numeral 21 the blade, and the numeral 22 the blade backing member of a razor, so organized that the said blade may be clamped between said members.
  • the guard member is shown of the variety having guard teeth 23 in its opposite longitu'dinal edges, along which the cutting edges 24 of the blade may extend in an ordinary way for shaving. Any suitable means may be provided for causing the blade to be clamped between the guard member and the backing member.
  • the backing member is provided with a screw-threaded pin 25, which is adapted to pass through an aperture 26 in the blade and through an opening 27 in the guard -.member, and to engage a screwthreaded socket 28 in a handle 29, to clamp the parts together for shaving.
  • the opening 27 is of a size and configuration-that the pin 25 is adapted to pass therethrough without positioning the blade backing member in relation to the guard member.
  • the aperture 26 in the blade is, generally speaking, in the form of a central longitudinal slot, provided with a central transverse ment the slot is provided with a further transverse enlargement 32, the last-mentioned enlargements being disposed intermediate the ends of the slot and being adapted to receiv'eeach a cylindrical positioning stud of the blade holders of the ordinary Gillette type of safety razors.
  • the enlargements 32 are also adapted to receive portionsof alignmg means or positioning studs of the razor construction herein described, as will hereinafter appear.
  • a transverse enlargement 33 At each end of the slot in the blade is provided a transverse enlargement 33, a similar enlargement 34 being pro- ,vided M between each enlargement 32 and the central enlargement 30.
  • the enlargements 33 and.34 are slit-like in contour and are located on opposite sides of the enlargements or openings 32.
  • the slitlike enlargements form tongues having recesses which comprise the enlargements or openings 32 in their free ends.
  • projections 35 At the transverse edges of the blade are formed projections 35, to facilitate handling of the blade in assembling the elements of the razor, and in each transverse edge are formed, adjacent the respective projection 35, two notches, recesses or openings 36, in which are adapted to be seated lugs 37 on the bacln'iig member 22, said lugs fitting snugly the said notches,
  • the blade is adapted to be positioned on the backing member.
  • the said lugs extend into notches, recesses or openings 38 in the transverse edges of the guard member 20.
  • the last-mentioned notches, recesses or openings are of a size that the said lugs do not contact with the edges thereof, so that the lugs do not connect the backing member with the guard member.
  • positioning studs or aligning means 39 comprising, in the construction illustrated in Figs. 1 to 5, inclusive, of the drawings, a cylindrical body portion 40, a neck portion -41 and a head portion 42.
  • the body portions are adapted to be extended through the enlargements 32 of the slot in the blade, as shown in Fig. 3 of the drawings.
  • the neck portions 41 extend along the longitudinal central portion of the guard I member 20 and are adapted to be received by the slot proper in the blade, while the head portions 42 extend transversely of the guard member 20 and are adapted to be extended into the transverse enlargements 34 ofthe blade aperture.
  • the blade When the parts are to be assembled for use, the blade is first placed uponthe guard member so that the aligning means or posithe notches 36 in the transverse edges of the blade, whereby the backing member, by means of the blade, is properly positioned with respect to theguard member. When then the handle is screwed upon the clamping pin, the elements of the razor are firmly clamped togetherv for shaving. As stated above, the lugs 37 and the pin 25 do not cooperate with the guard member to retain the backing member in operative relation with respect to the guard member, but the blade forms the connecting link between the backing and guard members for properly positioning the elements of the blade holder.
  • the main feature of the infiention is that the positioning studs on the guardmember may be formed at one period to engage certain portions of the aperture 26 in the blade,
  • said positioning studs may be either shaped or located in positions to be engaged by any other portions of the said aperture to retain the blade on the blade holder when the guard and backing members are clamped together against the blade.
  • Figs. 8 and 16 illustrate positioning studs comprising each a transversely extending base portion 46 fitting into one of the slot enlargements 32, a neck portion 47 adapted to be seated in the slot proper, and a transversely extending head 48 which is'adapted to be received by the adjacent transverse enlargement 34 in the blade slot.
  • Fig. 10 differs from the-one shown in Fig. 9 only. in that the neck portions 50 of the studs with the heads 51thereon' extend in a direction opposite to that shown in Fig. 9 of the drawings,
  • the positioning studs shown in Fig. 11 of the drawings comprise each a body por tion 52 adapted-to be seated in an enlargement 32 of the blade slot, and from this body portion extend in opposite directions in the longitudinal center line of the guard necks 53, eachof which is provided with a transversely extending head 54.
  • the necks are portions thereof in the slot proper, and the lateral heads in the transverse slot enlarge ments 33.
  • the positioning studs illustrated in Fig. 15 comprlse each a body portion 63 extending in the longitudinal center line of the guard member, said body portion being provided on either end with atransversely extending head 64.
  • the body portions of these positioning studs are adapted to be extended through the slot ,proper in the blade and through the enlargements32, while the heads 64 are adapted to be seated in thetransverse slot enlargements 33 and 34.
  • the positioning studs comprise body POI:- tions'which include aligning means and also excluding means, the latter means being adapted to exclude or prevent the unauthor-- ized use of a blade which cannot be fitted over or receive all portions of the stud or studs.
  • the studs may fill or partly fill the slot enlargements 32 and thereby position the blade on the guard member.
  • oLhers such as for instance those illustrated in Figs. 7 and 15, do not have body portions of this type.
  • those sections of the studs which are located in the longitudinal center. line of the guard fit the slot proper, that-is tosay, bear against the edges of the slot, while the heads thereof, exLending transversely of the. guard, fit some of the transverse enlargements of the slot. The blade is thus prevented-from shifting on v the guard both transversely and longitudinally.
  • portion 55 comprises each a body portion 55, from which extend in opposite directions, in the longitudinal center line of the guard, necks 56, each of which is rovidedhe body with a laterally extending head 57.
  • portion 55 is adapted to be seated in an enlargement 32 of theblade slot without completely filling the same, while the necks 56 are adaptedto be seated in the 'slot proper.
  • the positioning studs shown in Fig.13 of the drawings comprise each a body portion 58, a neck portion 59 which. extends in the longitudinal center line of the guard member,
  • Fig. 14 of the drawings differs from the one illustrated in Fig. 13 in that the lateral heads 61 on the neck portions 62' thereof extend in directions opposite to those shown in Fig. 13.
  • the body portions of the positioning studs shown in Figs. .13 and 14 are adapted to be seated'in the slot enlargements 32, the neck positioning studs-may be designed to fit the invention, which lies mainly in the provision, shaping and locating of the positioning studs to fit a blade aperture which indicates the origin of the blade.
  • Attention is calledto the fact that the blade-aperture is arranged in the blade symmetrically with respect to both the longitudinal and transverse axes thereof. This feature is not essential but it is desirable in view of the fact that it allows the blade to be used in any one of its four possible posi-,' tions on the blade holder, no matter which. one of the several positioning studs herein described be employed on the guard member.
  • A'safety razor including cap and guard members and an interposed blade of substantially oblong contour, said blade provided with cutting edges along its longer sides, said blade having an elongated slot intermediate the cutting edges thereof terminating in transverse'enlarg'ements adjacent the ends of the blade, the end margins of the slot form ing with the ends of the blade elongated flexing portions or hinges having at least the major portions thereof beyond theends of the cutting edges of said blade, longitudinal- 1y elongated aligning means on one of said members extending longitudinally of said blade and member, and engaging the longitudinal edges of the elongated slot, said means having excluding portions beyond and arranged transversely of said aligning means and extending into the transverse enlargements of said blade, the other member-havingmeans to engage the ends of the blade and hinges thereof, whereby the blade and last-named member are maintained in alignment.
  • a safety razor including cap and guard members and an interposed blade of substantially oblong contour, said blade being provided with cutting edges along its longer sides, said blade having an elongated slot intermediate the cutting edges thereof and e terminating in transverse enlargements adjacent the ends ofthe blade, said blade having projecting end portions narrower than the cap member and the blade between its cutting edges, the end margins of the slot forming with the blade end portions elongated flexing portions or hinges having atleast the major portions thereof beyond the ends of the cutting edges of the blade, said guard havingdongitudinally elongated aligning means extending longitudinally of said guard and blade and engaging the edges of said blade slot, said guard having excluding means beyond and arranged transversely of the aligning means and extending into the transverse enlargements of the blade, said cap member having'means engaging the endsof the blade and the longitudinal margins of the narrow blade end portions.
  • a safety razor head including cap and guard members having co-operating blade exing and blade'clamping surfaces, and'a flexible blade having cutting edges, said blade being interposed between said members and comprising blade sections held in spaced relation by flexing hinges, the adjacent portions of said blade sections being provided intermediate their end and central portions with a plurality of resilient tongues having their free ends recessed to formvblade-locating openings, said guard member having studs engaging the openings at the ends of the tongues to align the blade and guard, said studs having excluding portions extending blade transversely, said blade having a long slot located intermediate the edges thereo the edges of said slot having shallow recesses and deep recesses spaced from said shallow recesses and "at least someof said deep re Des being located at the end of the blade slot, studs on theguardengaging the shale low recesses to align the blade and guard,
  • said studs also having portions comprising excluding means extending longitudinally beyond the shallow recesses and transversely portions, said excluding means being located in spaced relation fromsaid aligning portions, said aligning means and excluding means being connected by a long narrow neck portion, said aligning means and said excluding means both extending transversely of said narrow neck portion and said excluding means being located at'the ends of the neck portions.
  • a safety razor comprising two clamping members having a blade interposed between them, said dinal slot provided intermediate of its ends and the central portion with enlargements, positioning means on one of said members engaging.
  • said enlargements, said blade slot being furthermoreprovided with slit-like enlargements on both sides of said-first-named enlargements, said positioning means being formed with extensions longitudinally of the clamping member and extending longitudinally of the blade slot,said extensions having transverse portions extending into some of the slit-like enlargements, alignthe blade and other clamping member.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Knives (AREA)
  • Treatment Of Fiber Materials (AREA)
US434047A 1930-03-07 1930-03-07 Safety razor Expired - Lifetime US1905699A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BE377788D BE377788A (cs) 1930-03-07
US434047A US1905699A (en) 1930-03-07 1930-03-07 Safety razor
GB5079/31A GB364901A (en) 1930-03-07 1931-02-17 Improvements in or relating to safety razors
FR712242D FR712242A (fr) 1930-03-07 1931-02-27 Rasoir de sûreté

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US434047A US1905699A (en) 1930-03-07 1930-03-07 Safety razor

Publications (1)

Publication Number Publication Date
US1905699A true US1905699A (en) 1933-04-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
US434047A Expired - Lifetime US1905699A (en) 1930-03-07 1930-03-07 Safety razor

Country Status (4)

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US (1) US1905699A (cs)
BE (1) BE377788A (cs)
FR (1) FR712242A (cs)
GB (1) GB364901A (cs)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4301772A (en) * 1980-06-02 1981-11-24 A. O. Smith Corporation Water heating apparatus

Also Published As

Publication number Publication date
FR712242A (fr) 1931-09-28
GB364901A (en) 1932-01-14
BE377788A (cs)

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