The American watchmaker and jeweler; an encyclopedia for the horologist, jeweler, gold and silversmith .. . f madeof iron or steel, with a thin layer of wax, draw the name, initials ordesign through the wax, exposing the metal, and place the tool in a mix-ture of 6 parts by weight of water and i part of sulphuric acid. In a fewhours remove, and if etched sufficiently, wash in clean water and dissolvethe wax by heat. STOGDEN, MATTHEW. Inventor of the half-quarter repeatingmechanism most used in English watches. He died in abject poverty,about 1770, at an advanced age. STOP WORK. The mechanism w
The American watchmaker and jeweler; an encyclopedia for the horologist, jeweler, gold and silversmith .. . f madeof iron or steel, with a thin layer of wax, draw the name, initials ordesign through the wax, exposing the metal, and place the tool in a mix-ture of 6 parts by weight of water and i part of sulphuric acid. In a fewhours remove, and if etched sufficiently, wash in clean water and dissolvethe wax by heat. STOGDEN, MATTHEW. Inventor of the half-quarter repeatingmechanism most used in English watches. He died in abject poverty,about 1770, at an advanced age. STOP WORK. The mechanism which prevents the overwinding ota timepiece. STRAIGHT LINE LEVER. That form of a lever escapement inwhich the escape wheel arbor, pallet and balance staff are all planted ina straight line, as in Fig. 266. stud. 313 STUD. A small piece of metal which is slotted to receive the outercoil of the hair spring. SULLY, HENRY. Born in 1680 and died in 1728. A celebratedwatchmaker and the author of a work on horology. He was an an Eng-lishman by birth, though he resided most of the time in France, wherehe Fig. 266. SUNK SECONDS. A watch in which the portion of the watchdial traversed by the seconds hand is sunk below the level of the rest ofthe dial. With sunk seconds, the hour hand may be closer to the dialthan it otherwise could. SURPRISE PIECE. A loose plate under the quarter snail of arepeating watch, which prevents the quarter rack reaching the snail if themechanism is set going at the hour. SWEEP SECONDS. A movement in which a long seconds handmoves from the center of the dial instead of at the bottom, as in chrono-graphs and split seconds watches. TABLE. The roller of a lever escapement that carries the impulsepin. TAIL STOCK. The sliding block or support in a lathe that carriesthe tailscrew. 313 Tavan. Half Open Tailstock. The half open tailstock shown in Fig. 267, iscut away so that the spindles can be laid in, instead of being passed
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