GB643815A - Control of aircraft - Google Patents

Abstract

643,815. Locking rods. ARMSTRONG WHITWORTH AIRCRAFT, Ltd., Sir W. G., and LLOYD, J: April 7, 1948, No. 9703. [Class 80(iii)] [Also in Group XXIX] An arrangment for locking a rod in a push-pull connection until lost-motion has been taken up and, on return movement, for bringing the rod back to its initial position before the lost motion is again effective, comprises a tube 26 pivoted at 31 to a plate 29 itself pivoted on a fixed pin 30, and an actuating rod 25 slidable in the tube 26 and having a pair of pins 27 working in slots 28 in the tube and engaging surfaces 33 of the plate 29. The rod to be actuated is fixed to the right-hand end of the tube 26. The arrangement is such that the pins 27 prevent angular movement of the plate 29 about the pivot 31, and therefore prevent axial displacement of the tube 26, until the lost motion provided by the pins and slots 27, 28 has been taken up, when one of the pins will have moved beyond one of the surfaces 33 to permit movement of the plate 29. On return movement. the plate 29 must come back to its initial position before the lost-motion is again available. The device is described as employed in a fluid-pressure servomotor system (see Group XXIX).