Cutting – Tool engages work during dwell of intermittent workfeed – Operation initiated by work-driven detector means to measure...
Patent
1975-06-18
1976-09-07
Abercrombie, Willie G.
Cutting
Tool engages work during dwell of intermittent workfeed
Operation initiated by work-driven detector means to measure...
B26D 520
Patent
active
039787508
ABSTRACT:
An apparatus for adjusting the frequency of an oscillating element provided with a hair sp extracts an oscillating signal from the oscillating element which is oscillated by the elastic force of the hair spring. High frequency pulses are counted by a counter during a predetermined period of the oscillation signal. On the other hand, further high frequency pulses are counted by another counter. When the count value of the latter counter coincides with that of the former counter, the input pulses to the latter counter are stopped by the coincidence output. Until the coincidence between the count values of both the counters is established, the hair spring is transported to adjust the length thereof. Thereafter, the unnecessary hair spring is cut away. Since this apparatus detects an appropriate length of the hair spring by electronic circuitry, it is small in size, and the unnecessary length of hair spring is automatically cut away.
REFERENCES:
patent: 3406601 (1968-10-01), Clifford
patent: 3707255 (1972-12-01), Ridgway et al.
patent: 3760669 (1973-09-01), Rosenthal et al.
Inoue Souichi
Kato Katsumi
Marumo Yoshiharu
Abercrombie Willie G.
Adams Bruce L.
Burns Robert E.
Kabushiki Kaisha Seikosha
Lobato Emmanuel J.
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