Adjustable auto thermostat

A thermostat with external adjusting means for varying the temperature sensitivity thereof comprising housing means, influent means and effluent means in said housing means for directing the flow of a fluid into and out of said housing means, valve means in said housing means for controlling the flow of fluid through said housing means, temperature response means operatively connected to said valve means for controlling the opening and closing of said valve means in response to a change of temperature of a fluid in said thermostat, said temperature response means comprising means that expand in response to an increase in temperature and contracts in response to a decrease in temperature, said temperature response means being arranged to bias said valve means into valve seat means mounted in said housing when fluid in said housing drops in temperature and to bias said valve means out of said valve seat means in response to an increase in temperature of fluid in said housing, adjusting means for said temperature response means to increase or decrease the sensitivity thereof to a change of temperature of a fluid in said thermostat, said adjusting means comprising shaft means passing through said housing, said shaft means operatively connected to said temperature response means, whereby adjustment of said adjusting means may be made externally of said housing, said shaft means engaging support means for supporting said temperature response means and which is adjustable through said shaft means for moving said temperature response means towards and away from said valve means, said support means comprising lever means and a first shaft member angled to intersect said lever means, secured to said lever means with said shaft member supporting said valve member and temperature response means, one end of said lever means being pivotally secured to the side of said housing, the other end of said lever means receiving said shaft means at an angle sufficient to move said lever means towards and away from said valve means when said shaft is moved in and out of said housing.