Measuring and testing – Gas content of a liquid or a solid – By vibration
Patent
1975-12-19
1976-10-05
Woodiel, Donald O.
Measuring and testing
Gas content of a liquid or a solid
By vibration
73159, 73432SD, G01N 1700, G01N 2500
Patent
active
039837424
ABSTRACT:
An improved light fastness and weather resistance testing apparatus has a lamp housing having a closed bottom and sides and an open top, a specimen rack rotatably mounted for rotation around the outside of the lamp housing, a testing vessel around the lamp housing and having a top with an opening therein over the lamp housing and within which the specimen rack is located, and having an inlet port and an exhaust port and a recirculation conduit for recirculating exhaust gas from the testing vessel, gas circulating means and gas humidifying means between the recirculation conduit and the testing vessel inlet, electrode means suspended in the lamp housing and electrode moving means coupled to the upper electrode of the electrode means for raising and lowering the upper electrode. An annular ceiling plate is provided above the lamp housing and spaced from the top of the testing vessel and has a cylindrical wall portion depending therefrom into the lamp housing with the cylindrical wall portion spaced from the edge of the opening in the top of the testing vessel, and an exhaust hood is mounted on the top of the testing vessel over the opening and has a substantially inverted funnel shape with the peripheral edge of the hood on the top of the testing vessel at a position spaced outwardly of the peripheral edge of the ceiling plate. A passage is thereby left from the space within the testing vessel through the space between the cylindrical wall portion and the edge of the opening in the top of the testing vessel and between the ceiling plate and the top of the testing vessel.
REFERENCES:
patent: 1870512 (1932-08-01), Jameson
patent: 2640354 (1953-06-01), Bernegger
patent: 3488681 (1970-01-01), Mita et al.
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