TY  - JOUR
AB  - In aircraft engines, the explosion pressures are maintained within safe limits at low altitudes by means of a stop device which is automatically adjusted according to the altitude by an aneroid device operating through a relay. The control lever a moves in a slotted member f2 adjustable by a rod f1 connected to a relay e controlled by an aneroid device d. In a modification, the control lever simultaneously adjusts the throttle and the ignition timing, only the latter being subject to the aneroid control. Fig. 3 shows an aneroid device h connected by a lever h2 to the relay comprising a valve j1 controlling the action of the lubricating‐oil pressure on a piston k1 connected to the ignition control by a lever f and rod f1. When the aneroid chamber h expands, the valve j1 is raised to allow oil admitted at l to pass by way of passages j2, k4 to the underside of the piston. When the piston is raised sufficiently, the oil pressure passes through a port k5 to the upper side of the piston, which is then lowered again by a spring m1. Instead of oil pressure, the engine suction or the pressure in the water‐cooling system may be used to actuate the relay. Specification 247,304, [Class 7 (iv), Internal‐combustion engines, Igniting in], is referred to.
VL  - 3
IS  - 8
SN  - 0002-2667
DO  - 10.1108/eb029440
UR  - https://doi.org/10.1108/eb029440
PY  - 1931
Y1  - 1931/01/01
TI  - Month in the Patent Office: A Selection of the More Important Aircraft and Engine Specifications Published Recently
T2  - Aircraft Engineering and Aerospace Technology
PB  - MCB UP Ltd
SP  - 209
EP  - 209
Y2  - 2024/04/24
ER  -