. Operation of trains and station work and telegraphy . FIG. 5. AUTOMATIC REGULATOR AND PRESSURE INDICATOR 15—Fire Regulator Bowl. 24—Adjustable Draft Regulator Spring. 27—Regulator Lever and Pressure Indicator. 30—Forked Connection and Door Rod. 31—Piston, Brass Connecting Lever. The fire-proof heaters just described have an automaticarrangement for regulating the fire according to the pres-sure in the heater and the temperature in the radiatingpipes. It is in effect a draft regulator, as shown by theletter r in Figure 4. It is also shown in detail in Figure5. It will be seen that a pipe indi
. Operation of trains and station work and telegraphy . FIG. 5. AUTOMATIC REGULATOR AND PRESSURE INDICATOR 15—Fire Regulator Bowl. 24—Adjustable Draft Regulator Spring. 27—Regulator Lever and Pressure Indicator. 30—Forked Connection and Door Rod. 31—Piston, Brass Connecting Lever. The fire-proof heaters just described have an automaticarrangement for regulating the fire according to the pres-sure in the heater and the temperature in the radiatingpipes. It is in effect a draft regulator, as shown by theletter r in Figure 4. It is also shown in detail in Figure5. It will be seen that a pipe indicated by p leaves theriser R at the point shown and runs into the regulator 50 RULES FOR MOVEMENT OF TRAINS. FIG. 6. DOUBLE COIL OR TWO CIRCULATION HEATER. HEATING AND LIGHTING CARS 51 bow^ which consists of twTo concave pieces bolted to-gether. Between the two parts of the bowl is a dia-phragm d made from corrugated steel, as shown sep-arately at the right. The steel is tempered and has athin sheet of copper on each side. This diaphragm isbolted between the parts of the regulator bowl as de-scribed ; the under side of wThich is exposed to the pres-sure in the pipe R. The rod q passes through the topof the bowl and rests upon the diaphragm d. The pressure in R and in the bowl gradually increases,forcing up the middle flexible portion of the diaphragmand thus the rod q is lifted against the action of the springS and the lever 1, and so raises rod s and counter-draftdoor O, thus checking the draft through the fire. Whenthe pressure in R decreases the diaphragm moves down-ward, the spring S pulls the lever 1 down and so closesthe door O, causing -more draft. The spring S has aloop at the upper
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Keywords: ., bookcentury1900, bookdecade1910, bookidopera, booksubjecttrainmen
