GB403127A - Improvements in or relating to means for releasing bombs from aircraft and for like purposes - Google Patents

Abstract

403,127. Electromagnetic switches and momentary-contact switches. FAIREY AVIATION CO., Ltd., Cranford Lane, Hayes, ORDIDGE, F. H., The Woods, Manor Road, Ruislip, and BARLOW, A. C., 25, Shackelton Road, Southall, all in Middlesex. Aug. 23, 1930, No. 25271. [Class 38 (v).] A selector device for use in dropping bombs and other articles from aircraft comprises as shown in Fig. 3 a switch r, q in the releasing circuit, which can be closed by a plunger o and is retained closed by a pawl t, then engaging a tooth u on the plunger. When a main switch is closed the releasing operation is performed and an electromagnet w in parallel with the releasing circuit rocks its armature y, thereby releasing an indicator 13 and also deflecting the pawl t, whereupon the plunger o is partially retracted until a shoulder 15 thereon is stopped by the other end of the pawl t. When the main switch is opened, the armature y and pawl t return to the normal position, and the released plunger o completes its outward movement and opens the switch r, q. A switch for producing a succession of releases is shown in Fig. 7 and comprises a rocking handle 19, 18 mounted between sectors 22 formed with slots 21 as in Specification 288,791, [Class 9 (ii), Torpedoes, &c.]. The handle rocks between fixed abutments 33, and its inner end 18 has ratchet teeth 23 in engagement with a pawl 24 on a switch lever 25 pivoted at 26. The movement of the handle 19 to the right causes the switch lever 25 to engage contacts 28 and to be withdrawn therefrom by a spring 27 several times in succession. At the end of the operative stroke, a finger 20 on the handle 19 which has moved in the zig-zag slot 21, comes out by a branch slot 29 ; and the handle can be returned to the initial position, and the finger 20 pressed down grooves 31 to a notch 32 in readiness for its movement along the slot 21.