Contemporary Battery-Powered 4-Cylinder Driveshaft Demonstrator Model theater lighting A large and playful mid-century

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

Bold red and black printed quarantine notice reading "INFANTILE PARALYSIS KEEP OUT

geometric belt

The shade has a 7" diameter

MM - 106182 - 041023

Contemporary Battery-Powered 4-Cylinder Driveshaft Demonstrator Model theater lighting A large and playful mid-centuryBattery 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