Abstract: In a gas burner assembly, the gas burners are equipped with a device constructed of a thermostatic, bimetallic material which autoregulates the amount of primary air that can be entrained into the burner such that the likelihood of an occurrence of lifting or flashback is substantially reduced, and elevated CO emissions at reduced firing rates are eliminated.

Abstract: An accumulating control clutch mechanism responsive to reciprocation of the coin slide of a coin receiving mechanism. The control clutch is arranged such that the shaft of a timer mechanism associated therewith is rotated unidirectionally to start the timer in response to a predetermined desired number of reciprocation movements of the coin slide. By this accumulating control clutch mechanism there is provided a means for changing a single slide reciprocation operation to start the timer mechanism to a multiple slide reciprocation operation without changing the coin receiving mechanism.