Apparatus and method for controlling the shear mechanism of a gl

Details Apparatus and method for controlling the shear mechanism of a gl Apparatus and method for controlling the shear mechanism of a gl

1988-11-16

1989-10-24

MacDonald, Allen

Boots, shoes, and leggings

65174, 377 17, 364142, G06F 1546

Patent

active

048766526

ABSTRACT:
An improved system for controlling the operation of a cyclically moving shear mechanism, including a circuit for automatically synchronizing the cyclical actuation of a fluidic drive assembly to the timing of a related mechanism such as a glass gob feeder. The synchronizing circuit increases or decreases a "start delay time" each cycle if a Return sensor signal precedes or follows a Start signal, respectively. A count corresponding to the Start Delay period is adjusted within a single cycle by the amount required to bring the return sensor signal and the start signal back into synchronism in subsequent cycles.

REFERENCES:
patent: Re29642 (1978-05-01), Kwiatkowski et al.
patent: 4408281 (1983-10-01), Tack, Jr. et al.
patent: 4467431 (1984-08-01), Gardner et al.
patent: 4669040 (1987-05-01), Pettit et al.
1985 Emhart Manual "502 Parallel Shears/Operating and Instruction Manual", author unknown (excerpts).

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