Automatic cold starting devices for internal combustion engines

Claim 1

AN automatic cold starting device for an internal combustion engine comprising a casing having a fuel supply orifice therein which is adapted to have fuel drawn therethrough by the suction of the engine to which the cold starting device is connected, means for varying the effective area of said orifice, and a temperature sensitive device for positioning the area varying means to control the effective area of the orifice according to the temperature of the engine, to decrease said effective orifice area with increasing temperature and to close the said orifice at a predetermined maximum temperature, biasing means adapted to act independently of said temperature sensitive device to urge said area-varying means towards the position of maximum effective area of the orifice, and means, adapted to be actuated by the engine when said engine commences to run, for removing the load of the biasing means from the area varying means so that the said areavarying means is free to be positioned by the temperature sensitive device and to move to reduce the effective area of the orifice under the control of said temperature sensitive device as the engine temperature increases, wherein the temperaturesensitive device acts on a rotary member, angular movement of which rotary member moves the area-varying means to vary the effective area of the orifice, the action of the temperaturesensitive means with increase of temperature tending to rotate the rotary member in a direction to reduce the effective area of the orifice, and the spring means, when the load thereof is not removed by running of the engine, applying a force to said rotary member tending to rotate it in a direction to increase the effective area of the orifice.