Radiant energy – Supported for nonsignalling objects of irradiation
Patent
1980-02-07
1981-11-10
Willis, Davis L.
Radiant energy
Supported for nonsignalling objects of irradiation
2504921, 250503, 250504R, 248446, H01J 3720
Patent
active
043000525
ABSTRACT:
Apparatus for exposing a series of plates to radiation. A stack of plates 53 to be processed are placed on the surface of a first table 7 located adjacent to a second table 8. Radiation exposure means 31 above both tables are switched on and after a time equal to half the required exposure time for a single plate a carriage 45 moves to slide the top plate of the stack from the first table 7 to the second table 8, deflecting a switch operating member 52 against a biasing force. This member operates a switch causing a motor 27 through suitable transmission systems to raise the first table 7 and lower the second table 8 by equal distances until the switch operating member 52 returns to its original position under the biasing force. After a further period equal to half the required exposure time for a single plate the next plate is transferred from the first table 7 to the second table 8 and the process is continued automatically until all plates have been exposed, half the exposure having occurred while supported on the first table and half while on the second table.
REFERENCES:
patent: 1768635 (1930-07-01), Schaffner
patent: 1809078 (1931-06-01), Smith
Brittain Austin
Graham Kenneth
Thawley Clive S.
Blank Charles A.
Fields Carolyn E.
Uniroyal Limited
Willis Davis L.
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