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Conical Pivot – Compound or Physical Pendulum

Conical Pivot

A pivot whose shoulders are of conical form used only in pivots having end stones. See Balance Staff.

Conoidal

Having the form of a cone.

Convex

Rising or swelling into a rounded body. The reverse of concave.

Convexo-Concave

Convex on one side and concave on the other.

Convexo-Convex

Convex on both sides.

Corundum-Wheels

Wheels faced with corundum, (emery) or made of a composition of corundum and cement. See Emery Wheels.

Countermark

A mark attached to gold and silver-ware of English make to attest its standard. See Hall Mark.

Cremaillere

The rack which winds the spring of the repeating train.

Crescent

The concave formed in the roller of the lever escapement to allow the passage of the safety pin.

Cylinder Height Tool

See Gauge.

Clock and Watchmaking

E. B. Denison, M. A., 12mo, London, 1848.

Compound or Physical Pendulum

A heavy weight suspended from a fixed point by means of a slender thread or wire as shown in Fig.247.