Home › S › Snail – Screw Tailstock

Snail – Screw Tailstock

Snail

A cam resembling a snail in form, used in the striking attachment to clocks.

Snailing

The ornamentation of the surface of metals by means of circles or bars, sometimes erroneously called damaskeening

Silver Solders

The following hard silver solders have been thoroughly tested:

Specific Gravities

The following table shows the specific gravities of numerous metals employed in the arts, together with their melting points, malleability, ductility, and tenacity.

Split Seconds

A variety of double chronograph in which there are two center-seconds hands.

Sprung Over

A watch in which the hairspring is attached to the staff above the balance.

Staff

An axis or arbor.

Stake

An anvil. To fasten by means of a stake.

Star Wheel

The wheel of the stop work which is pivoted to the barrel and also known as the Maltese cross.

Steady Pins

Pins used to secure two pieces of metal in relative positions, as a bridge and plate.

Stop Work

The mechanism which prevents the overwinding of a timepiece.

Screw Tailstock

This attachment is very convenient for heavy drilling, the spindle being moved by a screw with hand wheel attached, as shown in Fig. 301.