US2707326A - Safety razor - Google Patents

Description

May 3, 1955 F. CALABRETTA SAFETY RAZOR Filed March. 26, 1954 1N VEN TOR.

Aff/@ AM( A2? @195 7" TN United States Patent SAFETY RAZOR Frank Calabr-atta, Midland, Pa. Application March 26, 1954, Serial No. 418,815

2 Claims. (Cl. 30-41) This invention relates to a safety razor and has for its primary object to prolong the useful life of razor blades.

Another object is to force a lubricant to the cutting surface of the blade contained in the razor to prevent the formation of rust on the blade.

The above and other objects may be attained by employing this invention which embodies among its features a transversely curved head having a groove extending longitudinally therethrough and opening through the concave side of the head, an externally screw threaded stud carried by the head and extending perpendicularly therefrom adjacent the concave side thereof, said stud having circumferentially spaced channels extending longitudinally therethrough and communicating with the groove, a transversely curved blade clamping plate having an opening extending therethrough for receiving the stud, a hollow handle having an internally screw threaded opening extending through one end and communicating with the interior thereof for threadedly receiving the stud and advancing the handle into engagement with the clamping plate, and a plug removably engaged with the end of the handle remote from the threaded opening for extruding lubricant contained in the handle into the channels and groove.

Other features include having openings extending through the head and communicating with the groove on opposite sides of the stud, lugs carried by the blade clamping plate and extending outwardly from the convex side thereof on opposite sides of the opening therein for entrance into the openings in the head, elongated longitudinally spaced longitudinally extending ribs carried by the clamping plate and extending outwardly from the convex side thereof on opposite sides of the opening therein for partially filling the groove and restricting the passage of lubricant therethrough.

In the drawings:

Figure l is a perspective view of a razor embodying the features of this invention;

Figure 2 is a longitudinal sectional view through the assembled razor; and

Figure 3 is an exploded perspective View of the razor parts.

Referring to the drawings in detail, a head designated generally comprises a transversely curved body 12 having conventional teeth 14 projecting from opposite side edges thereof. Formed in the head and extending longitudinally therethrough is a groove 16 which opens through the concave face of the head and carried by the head and projecting outwardly from the concave side thereof is an externally screw threaded stud 18 which is provided with circumferentially spaced channels 2i) which communicate with the groove 16, as will be readily understood upon reference to the drawings. Extending through the body 12 of the head 10 on opposite sides of the stud 18 are openings 22 which communicate with the groove, as will be readily understood upon reference to Figure 3.

A blade clamping plate designated generally 24 comprises a transversely curved body 26 carrying adjacent ice opposite longitudinal side edges outwardly extending teeth 28 such as those carried by a guard or pressure plate of a conventional safety razor. Extending through the guard or pressure plate 24 substantially midway between opposite ends thereof is a tapered opening Si), the wall of which converges as it approaches the convex side of the body 26, and carried on the convex side of the body 26 in longitudinally spaced relation to the opening 3ft are lugs 32 which, as illustrated in Figure 2, are received in the openings 22 in the head 1i) when the parts are assembled. Longitudinally spaced longitudinally extending ribs 24 are carried by the convex side of the body 26 of the clamping plate 24- and these ribs are adapted to enter the groove 16 when the parts are assembled to form constrictions in said groove which will prevent the lubricant from ilowing too freely through the groove.

A handle designated generally 36 comprises a hollow cylindrical body 38 carrying adjacent one end a longitudinally extending nozzle 40 which is provided with an internally screw threaded opening 42 adapted to threadedly engage the stud 18 to detachably connect the handle 36 to the head 16, A conical extension 44 is carried by the nozzle 4i) remote from the handle 36 and is adapted to enter the conical opening 3@ in the clamping plate 24 so that as the handle 36 is rotated on the stud 18, the clamping plate 24 will be advanced toward the head 10 while a fluid-tight junction is established between the clamping plate and the handle. As illustrated in Figure 2, the internally screw threaded opening 42 communicates with the interior of the handle 36 so that lubricant contained in the handle may be extruded through the opening 42 and the channels 20 and groove 16 on to the head 19 to be distributed over the surface of a razor blade mounted thereon. Carried by the handle 36 adjacent the end thereof remote from the nozzle 40 are internal screw threads i6 with which are engaged the external screw threads 48 of a plug designated generally Sil which not only closes the end of the tubular body 38 remote from the nozzle 40 but also serves to force lubricant contained within the body 33 through the opening 42 to be extruded from the handle 36 through the channels 20 and into the groove 16.

In use, it will be evident that when the handle 36 is filled with lubricant such as petroleum jelly, the plug 56 J may be turned within the handle 36 to extrude the lubricant through the passage 42 and into the groove 16 through the channels 2li. The lubricant finding its way between the head l@ and a razor blade clamped in place by the clamping plate 24 will serve to lubricate the edges of the blade and inhibit the formation of rust on the blade.

While in the foregoing there has been shown and described the preferred embodiment of this invention, it is to be understood that minor changes in the details of construction, combination and arrangement of parts may be resorted to Without departing from the spirit and scope of the invention as claimed.

What is claimed is:

l. A. safety razor comprising a transversely curved head having a groove extending longitudinally therethrough and opening through the concave side of said head, an externally screw threaded stud carried by the head and extending perpendicularly therefrom adjacent the concave side thereof, said stud having circumferentially spaced channels extending longitudinally therethrough and communicating with the groove, said head having openings extending therethrough and communieating with the groove on opposite sides of the stud, a transversely curved blade clamping plate having an opening extending therethrough for receiving the stud, lugs carried by the blade clamping plate and extending outwardly from the convex side thereof on opposite sides of the opening therein for entrance into the openings in the head, a hollow handle having an internally screw threaded opening extending through one end and cornmunicating with the interior thereof for threadedly receiving the stud and advancing the handle into engagement with the clamping plate, and a plug removably engaged with the handle adjacent the end thereof remote from the internally screw threaded opening for extruding lubricant contained in the handle into the channels and the groove.

2. A safety razor comprising a transversely curved head having a groove extending longitudinally therethrough and opening through the concave side of said head, an externally screw threaded stud carried by the head and extending perpendicularly therefrom adjacent the concave side thereof, said stud having circumferentially spaced channels extending longitudinally therethrough and communicating with the groove, said head having openings extending therethrough and communicating with the groove on opposite sides of the stud, a transversely curved blade clamping plate having an opening I extending therethrough for receiving the stud, lugs carried by the blade clamping plate and extending outwardly from the convex side thereof on opposite sides of the opening therein for entrance into the openings in the head, a hollow handle having an internally screw threaded opening extending through one end and communicating with the interior thereof for threadedly receiving the stud and advancing the handle into engagement with the clamping plate, a plug removably engaged with the handle adjacent the end thereof remote from the internally screw threaded opening for extruding lubricant contained in the handle into the channels and the groove, and elongated longitudinally spaced longitudinally extending ribs carried by the clamping plate and extending outwardly from the convex side thereof on opposite sides of the opening therein for partially lling the groove and restricting the passage of lubricant therethrough.

References Cited in the tile of this patent UNTED STATES PATENTS 1,335,840 Kaylor Apr. 6, 1920 1,556,269 Warming Oct. 6, 1925 FOREGN PATENTS 696,192 France Oct. 13, 1930

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