发明名称 Time indicating apparatus and transmission mechanism therefor
摘要 A time clock is provided which includes a minute wheel that is advanced every minute and an hour wheel that must be advanced every hour, wherein a deflecting pawl device is utilized, in place of gears, to connect the wheels. Both wheels have ratchet teeth, and a pawl that oscilltes once each minute to advance the minute wheel. The minute wheel, which rotates once every hour, has a cam that moves beside the pawl to deflect it sidewardly so that the pawl engages a tooth on the hour wheel. Thus, at the next oscillation of the pawl, both wheels are advanced. The minute wheel bears the numbers 0 through 59, while the hour wheel bears the numbers 1 through 12 repeated five times, so that both wheels have 60 numbers.
申请公布号 US4044548(A) 申请公布日期 1977.08.30
申请号 US19760670619 申请日期 1976.03.26
申请人 NEW ENGLAND BUSINESS SERVICE, INC. 发明人 ROWBOTTAM, FRANCIS W.
分类号 G04B19/21;G07C1/04;G09F11/23;(IPC1-7):G04B19/02;G06C15/26 主分类号 G04B19/21
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