Related Object Info
Shortt free-pendulum clock regulator parts
Miscellaneous parts for the Shortt regulator which were formerly held in wooden case (1998-1-0187c). These include:
--Spare pendulum suspension springs stored in a glass test tube with a cork stopper. The springs are milled from a solid piece of metal. 2 complete; 1 broken in two. They have some rust.
--A very tiny cylindrical clamp (?) apparently with a tightening screw, stored in a small glass test tube with a cork stopper.
--A shop-made wooden box to hold and protect a pendulum suspension spring. The box has a clamping block and has been marked in pencil, "OPEN THIS SIDE / CARE / F.P. Suspension / CARE"
--Metal shims and brass pieces to fit the clamping frame at the bottom of the vacuum chamber, when used with assorted experiments at Harvard.
--Two identical 33-cm rods of solid brass, each with a long brass screw embedded in one end.
--A short, bent, hollow length of copper tubing.
--A loose black knob
--A broken thermometer
--An unidentified tool with a wooden handle
--Some sort of electrical bridge (?) cut from whatever circuit to which it had been attached. One component is a coil, perhaps a transformer. Two heavy insulated wires leading to it have been cut. The thin rectangular part on the top is a Dubilier condenser, stamped with the Dubilier logo and marked "PAT. 1345754"
Previously this also contained a vacuum gauge and a microscope, which were removed and attached to the Shortt clock in March 2008.
