Thermostat

A thermostat comprising a body assembly, first and second switches mounted on said body assembly, said body assembly including retainer means providing a disc support shoulder, a first bimetal snap disc having one side of its periphery positioned against said support shoulder, spacer means positioned against the other side of the periphery of said first disc, a second bimetal snap disc positioned with its periphery against the other side of said spacer means whereby both bimetallic discs are positioned within said body assembly by said support shoulder, both of said discs providing central portions movable snap action response to predetermined calibration temperatures, and operator means operatively connecting said first disc and said first switch for the operation of the latter in response to snap movement of the central portion of said first disc and operatively connecting said second disc and said second switch for operation of the latter in response to snap movement in the central portion of said second disc.

A multiple disc thermostat comprising a body assembly, first and second switch means on said body assembly, first and second concentric bimetal snap discs on said body assembly having substantially the same diameter, shoulder means engageable with one side of the periphery of said first disc axially locating said first disc, a metallic spacer ring engageable with the other side of the periphery of said first disc and with one side of the periphery of said second disc to axially locate said second disc with respect to said first disc and in turn with respect to said shoulder means, both of said discs providing central portions movable with snap action in response to predetermined temperatures, said first and second switch means being operated by snap movement of said central portions of said first and second discs, respectively.

A multiple disc thermostat comprising a body assembly, first and second switch means on said body assembly, first and second bimetal snap discs on said body assembly connected to operate said first and second switch means respectively, said switch means each including a terminal and a movable contact support arm connected together and mounted on said body assembly by a rivet or the like, said switch means also each including fixed contact means provided by a single fixed contact element secured in said body assembly, said body assembly having a center line substantially coaxial with said discs, said fixed contact element being stepped to offset said fixed contact means, and each of said movable contact supports extending from its associated terminal across said center line to a fixed contact means on the side of said center line remote from such associated terminal.

A multiple disc thermostat comprising a body assembly, first and second switch means on said body assembly, first and second bimetal snap discs on said body assembly connected to operate said first and second switch means respectively, said switch means each including a terminal and a movable contact support arm connected together and mounted on said body assembly by a rivet or the like, said switch means also each including fixed contact means provided by a single fixed contact element secured in said body assembly, wherein said first disc is on the side of said second disc remote from the switch means, said first disc being automatically thermally resettable in use, and said second disc being non-automatic and non-resettable in use.