GB895260A - Multiple pole electric relay - Google Patents

Abstract

895,260. Electromagnetic -switches. UNION-EVEREDY CO. Inc. May 5, 1960 [Jan. 7. 1960], No. 15895/60. Class 38 (5). A balanced armature centrally pivoted within a solenoid has projecting slotted ends engaged by a coupling member arranged to actuate contacts arranged around the axis of the armature and coupling member. The solenoid 19 is wound on a metal former 2 having ferromagnetic ends 8a, 8b and a non- magnetic tube 4 of square section with an axle-pin 5 serving as a pivot for the armature 1 which co-operates with polepieces 3a, 3b secured to the former 2. The magnetic circuit is completed by end-plates 15, 16 and the case 12. The forked ends 18a, 18b of the armature 1 receive the ends 52a, 52b of a spider member 49 forming the coupling member which is rotatably mounted on a stud 50 on a base 28. The plate 15 has legs 24 ... 27 attached to the base 28 which also supports six sets of changeover contacts insulated by bushings such as 36a, 37a and is also provided with bushings 39 for the coil leads. The spider 49 has six farther limbs each with a bead 54a ... 54f engaging a contact spring 45a so as to move it, when the relay is energized, against its bias away from a contact 42a to engage contact 41a. The case 12 may be filled with an inert gas or liquid by means of a nipple 72. In Fig. 5, not shown, a second coaxial contact assembly is mounted above the solenoid for operation thereby. In Fig. 6 extensions 57a, 57b in slots in the armature 1 operate microswitches such as 61a, 61b against the bias of springs 64a, 64b. Specification 843,833 is referred to.