GB229544A - Improvements in or relating to electrical switches - Google Patents

Abstract

229,544. Old, H. B. June 4, 1924. Switches, mechanical, without quick action: regulating switches. - Two way switches and switches that may be used' for varying the resistance, or capacity of a circuit comprise a fixed member carrying a number of spring plunger contacts and a movable member carrying a number of other contacts to co-operats with them, and means for adjusting the distance between the members so as to adjust the contact pressure. Fig. 2 shows a two-way switch, comprising a fixed member 1 carrying four spring plunger contacts 13, which contact two at a time with two contacts 12 on a rotatable disc 7. The disc 7 is supported by a spindle 4 which passes loosely through a sleeve 2 and may be adjusted to a. higher or lower position by rotating a nut 20 which screws on the spindle 4 and bears with its face against the sleeve 2. Fig. 3 shows a. switch for varying resistance &c. comprising contacts beneath a rotatable disc 23 co-operating with plunger contacts 13 on a fixed base 22. The contacts 13 are connected to points on a resistance or inductance coil in the usual way, or, if the switch is to vary the capacity of a circuit, condensers are connected up between adjacent contacts. The movable contacts which are connected to terminals 11 on the disc 23 are all connected together by a conductor 24.' The height of the disc 23 is adjustable as in the switch shown in Fig. 2.