Patent GB-405444-A (GB)
Title: Improvements in or relating to safety razors
IPC: B26B21/50
Filed: 1932-12-19
Abstract: 405,444. Sharpening razors. STEVENS, A. H., 5, Quality Court, Chancery Lane, London.-(Art Metal Works, Inc. ; 46, Center Street, Newark, New Jersey, U.S.A.) Dec. 19, 1932, No. 35941. [Class 60.] In a combined safety razor and sharpening device, the latter, a roller 13, is movable into operative engagement with either face of a blade-edge whilst the blade remains held on a stem such as 25, Fig. 1, which screw-clamps it to an upper clamping plate 21. The razor shown in Figs. 1-3 has a flat or transversely flexed double-edged blade 14, one edge of which remains in the shaving position whilst the other is in position for sharpening. The sharpening roller 13 is rotatable in a V-shaped frame 17, pivoted at 18 on side-arms carried by the guard 11. The frame can be turned from a lower position, Fig. 1, to an upper position, Fig. 3, so as to sharpen both sides of the blade-edge, the roller being rolled over the hand of the user for this purpose. To present the opposite blade-edge to the sharpening roller, the backing- plate 21, together with the blade, are lifted free of the guard and turned about the axis of the handle. For this purpose the blade is centrally clamped to the backing-plate independently of the guard by the slidable and rotatable internal stem 25, above referred to, the threaded end of which receives a shouldered backing-plate screw 23. The backing-plate carries the usual blade-locating studs 20 and these are slightly conical at their roots so as to retain the blade frictionally on them. The backing-plate is urged towards the guard by a spring 26 acting on a manipulating knob 27 at the outer end of the handle-stem 25. In one form the blade is centrally clamped between a shoulder on the backing-plate stud and the end of the stem 25. In a modification the blade is flexed into the concavity of the backing-plate by the end of the stem 25, and the longitudinal bar 17 of the rollercarrying frame is omitted. The roller-frame is located in either extreme position by engagement of depressions in the side-arms of the guard with either the rounded end of the roller spindle or with projections on the roller-frame. The modification shown in Figs. 11, 14, and 15 utilises an inclined blade-holding head, the guard 62 being carried by an inclined sleeve 61. The sharpening-roller 74 is carried in a frame 86 having bearing-screws 82 pivoted and slidable in slots in depending side-walls 80, 81 of the guard. The frame 86 has shaped outer walls 84, 85 and two similarly-shaped inner walls 90, having notches g which, as the frame is slid transversely to the rear, cam the chisel-headed blade-locating studs 72, compressing the backing-plate-securing spring 70 and initiating pivotal movement of the roller-frame into its upper position, Fig. 14. In a further modification, Figs. 20 and 21, the sleeve 115 carrying the blade-holder, has a limited pivotal movement about studs 114 on the handle, being swung to a lower position, Fig. 20, to permit the roller-frame 129, to be swung about arms 133 integral with the handle on which the rollerframe has a limited pivotal movement. The sleeve 115 is located in upper and lower positions by a spring-pressed detent 139. Some of the end guard-teeth 126 stand higher than the others to space the blade from the guard. The sharpening-roller may have a helical rib or a series of axial ribs and may be of a plastic material mixed with a powdered abradant substance.