Patent GB-583319-A (GB)
Title: Improvements in hair clippers
IPC: B26B19/20
Filed: 1944-09-13
Abstract: 583,319. Hair clippers. SWANN, W. E. Sept. 13, 1944, No. 17436. [Class 131] In a hair clipper o the kind having a cutter head comprising a transverse comb and a blade reciprocated in pressure contact with i by an oscillating arm driven by an electric motor &c. contained in an associated bod: part, the comb is' rigidly mounted on the body part and means are provided for adjusting the blade on the' rear face of the comb in a direction perpendicular to its cutting edge and in a plane parallel to that of the comb. As shown, the hair clipper comprises a body portion with a detachable cover 11 secured to a base 10 by screws 12 housing an electric motor which is removable as a unit and a clipper head which includes a fixed comb plate 28 having teeth 30 and a reciprocating cutter plate 31 having teeth 32 and, by means of a notch 34, engaged by the upturned end 33 of the pivoted arm 22 which is oscillated by worm gearing from the drive shaft 17. The upper portion of the cutter head is formed by a U- shaped frame 35, Fig. 9, attached to the base member 10 by lugs 38 and in sliding contact therewith is an inner frame 40, Fig. 8, a pressure plate 47 resting on the flanges 44 and a second plate 48 the edges of which are bent to fit under the flanges 44 is rigidly secured to the plate 47. The legs of a U-shaped strip 45 are slidably engaged between the flanges 44 the central portion being accommodated in a longitudinal groove 46 in the face of the cutter blade 31 engaging the comb plate and guides the cutter plate in a direction parallel to its cutting edge. Rotation of the adjusting wheel 58 causes endwise movement of the screw-threaded plunger 53 the rear end of which is carried on a bridge 57 spaced away from the frame 40 so that pressure of the spring 51 on the abutment 50 and therefore of the thickened edge 61 on the cutter blade is varied. Variation between fine and coarse cutting is obtained by means of the push-bar 63 which slides in guides in the frame 35 when one or other of the finger-pieces 70 is pressed causing a camming action between the edges of the slots 67 and the arms 65, 66 of the push-bar to advance or.retract the blade 32 with regard to the comb 30. A retaining mechanism, which can be over-ridden by pressure on either finger-piece 70, comprises a spring-controlled catch-plate 72 slidably mounted on the frame 35 for movement at right angles to the push-bar guides 64 and co-operating with the notches 74. A lever which protrudes from the cover 10, 11 behind the finger-piece 70 at one side is arranged to operate mechanism interconnecting the catch-plate 72 and a loading arm pivoted to the frame 35 for movement in a plane parallel to that of the push-bar 63 and acted upon by a second torsion spring and is adapted to disable one of those members while the other is effective so that automatic return of the blade to the' coarse cutting position is possible. Hair clippings are prevented from entering the slot 89 by providing a flange 90 with a lip 91 on the upper pressure plate 47 which may act as a hair catcher. The device may be housed in a container which may be fixed to the hairdresser's chair and act as a receiver of clipped hair. A rotary clothes brush may be driven from the clipper motor.