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Red Gold – Rose Cutter

Red Gold

A solution of copper cyanide in potassium cyanide is added to the gold bath in small proportions, until it assumes the color desired.

Ratchet

A small lever working freely upon an arbor which engages the teeth of the ratchet-wheel and prevents it from turning backward.

Ratchet Spring

The spring which actuates the ratchet.

Ratchet Wheel

A wheel having sharp angular teeth into which the ratchet engages to prevent the arbor upon which it is mounted from turning backward.

Recoil Escapement

An escapement in which the teeth are pressed backward, or recoiled by the pallets, after coming to rest, as in the Anchor Escapement.

Red Stuff

Sesquioxide of iron, used for polishing brass and steel by mixing with oil. Crocus, rouge and clinker are various grades of red stuff.

Regnauld

One of the first French clockmakers who attempted to compensate a clock against the effects of heat and cold.

Repeating Rack

The rack in a repeater supplied with teeth by which the hours, quarters and minutes are struck.

Repeating Slide

The slide by means of which the repeating train is wound from the outside.

Ring Gauge

A gauge used by jewelers for measuring the internal dimensions of finger rings.

Rocking Bar

The steel bar which carries the intermediate wheels in stem wind movements. Sometimes called the yoke.

Rose Cutter

A hollow cutter, as shown in Fig. 276, used for reducing the size of wire, as in forming heads when making screws.