Abstract: A mechanism for setting a thermostat having a housing wall forming a mounting opening. A rotatable setting shaft projects through the mounting opening and defines a circumferential groove concentric with respect to the shaft axis and a cam is fixed to the shaft for rotation therewith relative to the housing wall. The cam has a bore with at least one slot at a predetermined angular location and the shaft is locked to the cam by expanding the shaft into engagement with the bore and slot.The shaft is journaled in a bearing for rotation relative to the housing wall. The bearing comprises at least a collar-like structure fixed with respect to the housing wall and extending axially relative to the shaft and radially inwardly deformed toward engagement with the shaft groove. The collar-like bearing structure and shaft groove cooperate to enable rotation of the shaft relative to the collar-like structure about the axis and to restrain the shaft against axial movement relative to the housing wall.

Abstract: A control switch unit adaptable for a number of different purposes has a fluid-filled flexible-walled capsule acting within a housing on a pivoted operating lever arranged to operate a switch located in the housing on the other side of the pivot axis of the lever from the capsule, the lever being biased by a cam-adjustable tensioning spring acting on the opposite side of the operating lever from the capsule and the switch. Further components such as a manual switch-off control, a pilot lamp operable by an auxiliary switch, or a capsule heater, can be added without rearrangement of the basic unit.