Contemporary Battery-Powered 4-Cylinder Driveshaft Demonstrator Model theater lighting MM - 6584 - 121123

MM - 6584 - 121123

A large and playful mid-century cardboard display sign promoting 7UP with a whimsical sandwich character and the classic green bottle rendered in bright litho color

The glass panels show natural marbling and variation in tone

geometric belt

Contemporary Battery-Powered 4-Cylinder Driveshaft Demonstrator Model theater lighting MM - 6584 - 121123Battery powered mechanical demonstrator model illustrating the operation of a four cylinder engine and driveshaft system. Constructed primarily from finished hardwood, the piece features four simulated cylinder blocks with reciprocating pistons connected via rods to a central crankshaft. As the unit runs, the pistons move in sequence, transferring motion through the crank to demonstrate rotational output. A compact motor housing with a small toggle