Industrial electric heating furnaces – Resistance furnace device – Charging or discharging
Patent
1980-05-15
1983-02-01
Roskoski, Bernard
Industrial electric heating furnaces
Resistance furnace device
Charging or discharging
373118, 219426, 222503, 414199, F27D 300, F27D 1104
Patent
active
043719716
ABSTRACT:
A sample loading mechanism includes a hopper mounted to a base for positioning the hopper with respect to a furnace for releasably holding a relatively small sample in relation to a crucible used with the furnace. The hopper includes a floor with a movable element for alternately closing the floor for holding the sample and opening the floor permitting the sample to drop into the crucible. A plate is slideably mounted to the base above the hopper and includes an aperture which aligns with the hopper in a first position for admitting a sample to the hopper and is slideable to a second position for selectively sealing the upper end of the hopper. An actuator is provided for selectively controlling the movable element of the hopper for dropping the sample into a crucible aligned below the hopper.
REFERENCES:
patent: 1585120 (1926-05-01), Seavers
patent: 1850589 (1932-03-01), Tourneau
patent: 2636648 (1953-04-01), Richardson
patent: 2836332 (1958-05-01), Standish et al.
patent: 2901148 (1959-08-01), Cunningham et al.
patent: 3936587 (1976-02-01), Sitek et al.
patent: 4056677 (1977-11-01), Berk et al.
Leco Corporation
Roskoski Bernard
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