. The universal assistant, and complete mechanic : containing over one million industrial facts, calculations, receipts, processes, trade secrets, rules, business forms, legal items, etc., in every occupation, from the household to the manufactory. Pig. IV. ADjrsTMEyrs to Posttions.—This adjustment is known to butSew watchmakers, and they make it a regular business It require!91 the operator coosideiable manual Bkijl aud i«tlective power*. Tin. WATCHMAKERS, JEWELLERS*, AC, BECErfTS. 817 fraat principle is to equalize the frictions, bo that the pivots will offeilo the action of the spring the s
. The universal assistant, and complete mechanic : containing over one million industrial facts, calculations, receipts, processes, trade secrets, rules, business forms, legal items, etc., in every occupation, from the household to the manufactory. Pig. IV. ADjrsTMEyrs to Posttions.—This adjustment is known to butSew watchmakers, and they make it a regular business It require!91 the operator coosideiable manual Bkijl aud i«tlective power*. Tin. WATCHMAKERS, JEWELLERS*, AC, BECErfTS. 817 fraat principle is to equalize the frictions, bo that the pivots will offeilo the action of the spring the same resisLince in the four positions fenerally required, viz., dial up, XII up, cock up and III up. Alteravlng inspected and corrected the train so that the motive power iatransmitted nuiformly to the balance, the pivois and jewela of thelever should be polished and ehoitcued bo as to have very little fric-tion; next, the lever should be poised as nearly perfect as possible,and the slot also in the fork wLcie the ruby pin acts should bepolished. The balance jewels ought to be made short enough tonave the holes square, rounded infeide, and perfectly ixjli^hed. thobalance pivots well burnished and their ends hulf rounded, and tliebalance poised very carefully. The English method of throwing tliabalance out of poise to obtain the same rate in different positions isnot accepted generally, and is considered a bad practice by the motjteminent
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Keywords: ., bookcentury1800, bookdecade1870, booksubje, booksubjecttechnology
