Patent GB-393493-A (GB)
Title: Safety razor
IPC: B26B21/26
Filed: 1932-11-23
Abstract: 393,493. Safety razors. FOUGNER, N. K., Hotel Empire, Broadway, New York, U.S.A. Nov. 23, 1932, No. 33155. Convention date, Nov. 23, 1931. [Class 30.] A safety razor for a continuous ribbon blade 20 has a guard part comprising a pair of spaced flat surfaces 35, 36 for simultaneously supporting, for shaving, two separate lengths of the blade, and a hollow handle 32 containing take-off and supply spools 26 on which the blade is wound. The holder comprises an upper member 30 and a lower one 31, attached together by a screw 55 received in a threaded boss 44 on the upper member, which boss forms a bearing for the blade supply spool 26, flanges on which are adjustably clamped by the screw 55 to give a retarding action. The lower holdermember 31 has side flanges 50 which co-operate with a front-flange 47 on the upper member 30 to form the closed handle-space 32 with blade-emerging and entry slits 51, 52. The blade-flanges 50 are located on the upper member by tongues 53 on them. The guard members 35, 36 are joined by an arcuate surface 37 and have a shoulder 42 supporting the rear unsharpened edge of the blade. The blade is clamped by a centrally-slotted channelshaped element 85 which, for clamping, is slid lengthwise, under a T-shaped bar 92, by rotation of an exterior knob 93 connected through the clamping element to an internal double cam or eccentric 96 engaging the inner wall of the boss 44. The clamping-element 85 has two series of holes 97 through which the blade can be flushed with water in the released position, shown dotted in Fig. 1. The take-off spool, also 26, is mounted on a reduced part 65 of a driving element 64 having an intermediate reduced part 63 bearing in an aperture in the upper holder-member 30 and held in position by a lower nut 68 screwing on to a stud 66 on the part 65. The spool is drivingly connected to the member 64 by co-operating projections 73 and recesses in the part 63 and the spool flange respectively, and to prevent use of spurious blade-spool assemblies these projections and recesses may be in the form of a trade mark. To prevent drive in the wrong direction, the member 64 is turned by a key-member 100 screw-threaded to a stud 102 on it, and this key-member is removable to prevent unauthorized turning. The blade-spools 26 are flanged on both sides, the upper flanges 28 having ratchet-teeth engaged by a fixed double spring- pawl 76. To guard against contact of the blade cutting-edge with the lower spool flanges, the blade-ends are attached to and coiled around a short strip-member slightly wider than the blade strip and having a keyhole slot engaging a headed pin on the spool. As a further precaution, the upper flange 28 is made in magnetized sections which tend to attract the unsharpened side of the blade-coil. To prevent oxidation of the cutting edge, the lower spool-flange carries a thick layer L of grease. Both the lower flange and the grease are transparent and there is a celluloid window 82 in the lower holder-member to enable the amount of unused blade to be observed. In a modification in which the entire razor is discarded when the blade supply is exhausted, the nuts 55, 68 are replaced by bosses integral with the lower holder-member 31, the screw connection being replaced by a riveted one. The locating- projections 53 on the side-flanges of the holdermember 31 are dovetailed to make a permanent connection.