. Bacteriological apparatus : pathological, biochemical. Scientific apparatus and instruments; Bacteriology; Chemical industry. 16702 16702 16720 16702 Regulator, Thermo—Greenman's. Made entirely of steel; consists of steel tube "A" (see illustration) filled with mercury and screwed tightly into body of regulator "B"; gas entering at "C" must pass valve "H," before passing to burner through "D," except small quan- tity, determined by screw valve "J," which passes through by-pass "I" to maintain pilot flame; mercury in tube &
. Bacteriological apparatus : pathological, biochemical. Scientific apparatus and instruments; Bacteriology; Chemical industry. 16702 16702 16720 16702 Regulator, Thermo—Greenman's. Made entirely of steel; consists of steel tube "A" (see illustration) filled with mercury and screwed tightly into body of regulator "B"; gas entering at "C" must pass valve "H," before passing to burner through "D," except small quan- tity, determined by screw valve "J," which passes through by-pass "I" to maintain pilot flame; mercury in tube "A," when expanded, raises valve "H" against conical valve seat "G," and valve is pre- vented from falling too far by pin at "O"; volume of mercury is controlled by rod "K," held in place by screw "L"; by adjusting rod "K" and screw valve "J," an extremely accurate control of gas supply and temperature can be maintained; slightest increase in volume of mercury in tube "A" produces considerable difference in height of mercury in passing "F," and float "H," which is about two-thirds submerged in the mercury, is carried upwards and closes valve at "G"; brass tube, in which regulator is to be inserted, should be filled with glycerine; metallic tubing should be used in making connections with thermo-regulator; both inlet and outlet tubes have %-in. iron pipe size thread Each 16704 Regulator, Gas Filter. For Greenman's Regulator above; may also be used with Roux regulator, to remove coal tar and other solids, thereby assuring perfect operation of regulator Each 16720 Regulator, Thermo—Dunham's. An extremely sensitive regulator in which the sensitiveness is derived from large alcohol bulb; minute changes in volume of alcohol, as caused by variations in temperature, act upon U-shaped column of mercury and control volume of gas which passes through the tu
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectscientificapparatusa
