Posted 6 years ago
The celluloid "glass" has shrunk, so is held in place with a piece of wire lace twine. This is one that my grandparents purchased along with their new range in 1924. The clock still runs and keeps good time, but the switch contacts are burnt out. My grandfather replaced it in about 1960, with a GE Telechron that he wired to operate the oven relay.
The keys set the start and stop times, and the lever is a manual overide, so the oven can be operated normally, without the timer switch in the circuit. It flips the toggle downward, allowing the timer to control the outlet at the rear. When the timer is in the circuit, the lever can be seen protrouding from the side of the clock. In this photo, it is in the "timer off" position, and the oven could be operated manually. The outlet is a 110vac outlet that closed a relay to switch the 220vac oven supply, but the blades on the oven relay plug were thicker than a standard 110vac plug.