Tape perforator

Details Tape perforator Tape perforator

1975-03-10

1976-01-13

Meister, J. M.

Selective cutting (e.g., punching)

With specific means to select a single tool

By immobilizing a portion of an element in tool drive train

234119, G06K 102

Patent

active

039319296

ABSTRACT:
The present disclosure is particularly directed to means that will slow down the operation of the tape perforating apparatus during the time intervals when the fulcrum levers must either travel into place or withdraw themselves from underneath of the lift levers in order to create more time for the critical transfer to take place. The present invention utilizes a double-ended bellcrank instead of the crank link disclosed in the aforementioned patent. As the main drive shaft rotates, the upper end of the bellcrank travels through an elliptical path that creates a partial dwell in the travel of the cradle when the front end of the cradle is near its low position. A partial dwell therefore occurs at the rear end of the lift levers at the critical transfer position.

REFERENCES:
patent: 3001694 (1961-09-01), Simmerman et al.
patent: 3556396 (1971-01-01), Terbrueggen et al.
patent: 3870224 (1975-03-01), Canick et al.

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