Material or article handling – Static receptacle and means for charging or discharging – or... – With means to seal receptacle in vicinity of entrance for...
Patent
1982-06-01
1985-04-23
Sheridan, Robert G.
Material or article handling
Static receptacle and means for charging or discharging, or...
With means to seal receptacle in vicinity of entrance for...
198857, 414294, B65G 4308
Patent
active
045127042
ABSTRACT:
An arrangement for loading and unloading X-ray film cassettes is provided with a channel bounded by bottom, top and lateral walls. At one of its ends, the channel has an inlet opening for the cassettes, while it is provided with an abutment wall at its other end. A plurality of transporting rollers is accommodated in respective slots of the bottom wall, each of the transporting rollers slightly projecting above the bottom wall to engage and entrain the respective cassette resting thereon. A switching roller is situated in a recess of the bottom wall between the inlet opening and the first of the transporting rollers. The switching roller is supported on springs so that, when the cassette rests thereon, it is depressed into the recess, so that the respective spring activates an associated light barrier that issues a control signal. The control signal is used for energizing the drive for the transporting rollers, if de-energized, and for de-energizing the drive, if energized. A microswitch in the abutment wall de-energizes the drive when depressed by the cassette. A switching element sensitive to re-closing of the cassette re-energizes the drive, but in the opposite direction. A closing slide is used for light-tightly closing and for opening the inlet opening in cycle with the movement of the cassette.
REFERENCES:
patent: 1560830 (1925-11-01), Langsdorf
patent: 3718248 (1973-02-01), Muller
patent: 4049142 (1977-09-01), Azzaroni
Agfa-Gevaert AG
Sheridan Robert G.
Striker Michael J.
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