Gillette Adjustable
Patent US2848807
Invention Safety Razor With Adjustable Blade Setting
Filed Monday, 19th March 1956
Published Tuesday, 26th August 1958
Inventors Michael Douglas Benedict, Jr., Meyer Joseph Shnitzler
Owner Gillette Company
Language English
Simiar to the Gillette Fatboy this resembles the bottom dial Gillette
B26B21/32
- 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 - 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 - Y
General Tagging Of New Technological Developments; General Tagging Of Cross-Sectional Technologies Spanning Over Several Sections Of The Ipc; Technical Subjects Covered By Former Uspc Cross-Reference Art Collections [Xracs] And Digests - Y10
Technical Subjects Covered By Former Uspc - Y10S
Technical Subjects Covered By Former Uspc Cross-Reference Art Collections [Xracs] And Digests - Y10S30/00
Cutlery - Y10S30/01
Rechargeable battery operated
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A PDF version of the original patent can be found here.
Parts not referenced in the text: None
Parts not referenced in the images: None
The present invention relates to safety razors, and principally to safety razors of the so-called "one-piece" construction, wherein the component elements of the razor remain inter-connected at all times to facilitate blade replacement without the necessity of handling separated razor parts. In greater particularity the present invention concerns the provision of improved and relatively inexpensive means for adjusting the shaving relation between a clamped blade and an associated guard member to suit the needs of the user.
The various objects and features of the invention will be apparent in the following detailed description of a preferred embodiment thereof, and their particular novelty distinctly pointed out in the appended claims.
In the drawings:
A preferred embodiment of our novel razor, as it would be used in shaving, is best illustrated in
The exterior portions of the handle
In furtherance of certain aspects of the invention, it has been found preferable to provide an inner tube
Realizing that the range of variation of shaving relation between the clamped blade
Replacement of the blade
The spider
The cap sections
With the above description in mind, it will be seen that the blade
It will be noted that the above arrangement provides at all times a fixed relation for the opening and closing of the cap sections
Oftentimes, in shaving it is found that certain portions of a person's face may be more tender than other portions, and because of this or for closer shaving or other reasons, it may be desirable to vary the shaving relation of the blade of the razor head during the course of the shave. For this reason, as well as to permit variations of this shaving relation to suit the need of different individual users, it is essential that convenient and readily accessible means be provided for effecting such adjustment. Further to these same ends, it is desirable to provide sensing means for determining the magnitude of adjustment being made. To further these purposes, a stop-spring
As has previously been alluded to, there are desirable maximum and minimum settings for the shaving relation of the blade edge with respect to the guard member
Two functions are combined in the stop-spring
Having thus described our invention, what we claim as novel and desire to secure by Letters Patent in the United States is:
1. A safety razor of the type which has its component elements interconnected at all times, said razor comprising a handle and a head portion attached thereto for holding a double-edged blade, said head portion including a platform, swingable cap sections having an open position for blade replacement and a closed position for clamping the blade against the platform, and a guard spaced beneath the cutting edges of the clamped blade and in shaving relation with respect to said cutting edges, said handle comprising a hollow outer tube secured at one end to the guard and having a longitudinally extending slot in its other end, an inner tube secured to said platform and extending interiorly and concentrically of the outer tube, an adjusting knob threaded onto the lower end of the inner tube for varying the shaving relation of the guard with respect to said blade edges to suit the needs of the user, said adjusting knob having a seat for receiving said other end of the outer tube, spring means for maintaining said outer tube in engagement with the adjusting knob seat, said adjusting knob also having flutes formed on an interior surface overlapping the lower end of said outer tube and concentric therewith, and a lug integral with said overlapping portion and extending there-above, a stop-spring comprising an elongated member extending between said outer tube and said inner tube and bearing against each of said tubes to urge its lower end outwardly through the slot in said outer tube causing said lower end to enter said flutes and releasably maintain said adjusting knob in selected positions, an integral projection on said stop-spring extending into the path of travel of said lug and limiting the movement of said adjusting knob to less than one full revolution, said head portion also including a spider on which said cap sections are swingably mounted, a stem connected to said spider and extending interiorly of said inner tube, means for imparting longitudinal movement to said stem and spider comprising a knob also threaded onto the lower end of said inner tube and in end-to-end relationship with said adjusting knob, said cap sections having projections and legs adjacent their pivotal mountings and said platform having undersurfaces which are engaged by said projections to swing said cap sections to their open position in response to movement of the stem in one direction, said platform also having edges which engage the cap section legs to swing said cap sections to their closed position in response to longitudinal movement of the stem and spider in the opposite direction as the blade is clamped against the platform.
2. A safety razor of the type which has its component elements interconnected at all times, said razor comprising a handle and a head portion attached thereto for holding a double-edged blade, said head portion including a guard, a platform, and means for clamping the blade against the platform with the cutting edges of the blade in shaving relation with respect to the guard, said handle comprising a hollow outer tube secured at one end to the guard, an inner tube secured to said platform and extending interiorly and concentrically of the outer tube, an adjusting knob threaded onto the lower end of the inner tube for varying the shaving relation of the guard with respect to said blade edges to suit the needs of the user and having a seat for receiving the other end of the outer tube, spring means for maintaining said outer tube in engagement with the adjusting knob seat said outer tube having a longitudinally extending slot in its lower end, a stop-spring extending into said slot, said adjusting knob having flutes formed on an interior surface overlapping the lower end of said outer tube and concentric therewith, and a lug integral with said overlapping portion and extending thereabove, said stop-spring comprising an elongated member extending between said outer tube and said inner tube and bearing against each of said tubes to urge its lower end outwardly through the slot in said outer tube causing said lower end to enter said flutes and releasably maintain the adjusting knob in selected positions, and an integral projection on said stop-spring extending into the path of travel of said lug and limiting the movement of said adjusting knob to less than one full revolution.
3. A safety razor of the type which has its component elements interconnected at all times, said razor comprising a handle and a head portion attached thereto for holding a double-edged blade, said head portion including a guard, a platform, and means for clamping the blade against the platform with the cutting edges of the blade in shaving relation with respect to the guard, said handle comprising a hollow outer tube, an inner tube extending interiorly and concentrically of the outer tube, the upper end of one said tube secured to said guard and the upper end of the other said tube secured to said platform, an adjusting knob threaded onto one of said tubes for varying the relation of the guard with respect to said platform and having a seat for receiving the other of said tubes, said outer tube having a longitudinally extending slot therein, a stop-spring extending into said slot, said adjusting knob having flutes formed on an interior surface concentric with said tubes, and a iug integral with said adjusting knob, said stop-spring comprising an elongated member extending between said outer tube and said inner tube and bearing against said inner tube to urge a portion of said stop-spring outwardly through the slot in said outer tube into engagement with said flutes and releasably maintain the adjusting knob in selected positions, a portion of said stop-spring extending into the path of travel of said lug and limiting the movement of said adjusting knob to less than one full revolution.
References Cited in the file of this patent
United States Patents
1,755,726 Conill Apr. 22, 1930
2,004,086 Testi June 4, 1935
2,106,587 Bates et al. Jan. 25, 1938
2,369,685 Nelson Feb. 20, 1945
2,612,684 Mansfield Oct. 7, 1952
2,729,888 O'Shea Jan. 10, 1956
2,748,467 Shnitzler et al. June 5, 1956
Foreign Patents
100,830 Australia Apr. 19, 1937