Brearley, Harry Chase, 1870-, Ingersoll, Robt. H., & Bro · New York, Pub. by Doubleday, Page & Co. for Robert H. Ingersol & Bros. · leaf 331
bal-ance-staff, of course, turns just as the balance turns and with it thejewel-pin. And the lever is just long enough and is so placed that everytime the balance turns, the jewel-pin fits into the slot between theprongs of the lever-fork carrying it first one way, and then, as thebalance comes… … <ui ^Modern Watch Movement 1 First or *J((ain Wheel to which mainspringis attached. 6 Tallet, with TaJlet Jewels. 2 Second or Qenter Wheel. 7 J^ever. 3 Third Wheel. 8 Balance. 4 Fourth Wheel. 9 Hair Spring. 5 £scape Wheel. 1 o ^//W- tooth before the other pallet-jewel is thrust in to stop it. It…
Time measurements · Clocks and watches
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