Abstract: The thermostat comprises a main housing (10) having a metal sheet cover (12) with a bored and threaded boss (18) and an adjustment shaft (20) threadedly engaged in said boss and entering the housing to interact with internal operative members of the thermostat. According to the invention, a plate (28) of yielding material is affixed against the inside of the metal sheet cover, said plate having a bore (30) aligned with the bored and threaded boss, of a diameter slightly less than the shaft diameter, and that the threaded end of the shaft is in interference fit with said bore.

Abstract: An adjustable electric thermostat comprises a main housing in which an adjustment shaft is threadedly engaged so that the shaft end inside the housing is displaced when the shaft is turned, a heat transducer mounted on the shaft end, and a switch comprising a channel-shaped, rigid member having a base portion attached on a wall of the housing and opposite branches having notches to support a snap-action blade so that the temperature transducer abuts transversely against an intermediate point in the blade. According to the invention, the channel-shaped member is made of a bimetal plate having the most expansible metal on the outside, so that the branches of the channel-shaped member bend toward each other when the channel-shaped member is heated.