Electro-mechanical power unit

Claim 1

A POWER UNIT INCLUDING, IN COMBINATION, A SUPPORT, A BI-METALLIC STRIP MOUNTED WITH ONE END FIXED TO THE SUPPORT AND THE OPPOSITE END FREE FOR SWINGING MOVEMENT RELATIVE TO SAID FIXED END, A RATCHET WHEEL MOUNTED ON SAID SUPPORT FOR ROTATION ABOUT ITS AXIS, A PAWL MEANS CONNECTED TO SAID ELEMENT NEAR THE FREE END THEREOF WITH AN END OF SAID PAWL MEANS ENGAGING A TOOTH ON SAID RATCHET WHEEL, AN ELECTRIC CIRCUIT, AN ELECTRIC RESISTANCE COIL CONNECTED IN SAID CIRCUIT AND ARRANGED TO SURROUND A MAJOR PORTION OF SAID BI-METALLIC ELEMENT FOR APPLYING HEAT THERETO, A SWITCH ARRANGED IN SAID ELECTRIC CIRCUIT AND MOUNTED FOR MOVEMENT TO OPEN AND CLOSE THE CIRCUIT, AND A CONNECTION BETWEEN THE FREE END OF THE BI-METALLIC ELEMENT AND SAID SWITCH TO EFFECT THE MOVEMENT OF THE SWITCH IN RESPONSE TO THE SWINGING MOVEMENTS OF THE FREE END OF SAID ELEMENT, ADJUSTABLE MEANS OPERABLE TO PREDETERMINE THE MINIMUM DEGREE OF HEAT REQUIRED TO EFFECT INITIAL MOVEMENT OF THE BI-METALLIC ELEMENT, SAID SUPPORT INCLUDING A BRACKET, A SWITCH ARM PIVOTALLY SEATED ON SAID BRACKET, AN ANCHOR ARM CONNECTED TO AND EXTENDING FROM THE BI-METALLIC ELEMENT TOWARD SAID BRACKET IN A POSITION BELOW THE SWITCH ARM, AND A VERTICALLY DISPOSED SPRING CONNECTED AT ONE END TO SAID SWITCH ARM AND AT ITS OTHER END TO SAID ANCHOR ARM, WHEREBY MOVEMENT OF THE BI-METALLIC ARM CARRIES WITH IT THE ANCHOR ARM AND THE END OF THE SPRING CONNECTED THERETO AND EFFECTS AN OFF-CENTER PULL ON THE SWITCH ARM TO ROCK IT ON ITS PIVOT.