INJECTORS. The Monitor Injector of 1888, made by the Nathan ?Mfg. Co.. of New York. is shown in Fig. 1. It is adapted for use in locomotives, and may be used either with the lever attachment, as shown, or with a quick-motion, screw-starting arrangement. It has a range of capacity from 50 to 100 per cent of its maximum. It will lift the water 5 ft. with 30 lbs. steam-pressure. To operate it, the lever-valve, or the serew-valve in ease the hitter is used, is opened a short distance to lift the water till water runs from the overflow. when it is opened full. The quantity of water is regulated by the water-val•e W. When used as a healer the valve // is closed, Ind at all other times it is kept open.
The Penberthy Antomatic Infector, wade by the Penbert by Injector Co., of Detroit, is shown in Fig. 2. Referring to the letters on the sectional view, the parts are as follows: Ic tail-pipe ; X, Pim ing-nut ; I?, steam-jet ; suction-jet ; T. ring ; 0. plug; N.orertlow-hinge ; P, overflow-N-0re; and delivery-tube. The capacity of this injector may be cut down to one half of the maximum by throttling the water-supply valve.
The Little (Wool Locomotive Injector of 1889, ninde by the flue 31fg.Co., of Philadelphia, is shown in Fig. 3. It is used as a locomotive injector. The combining-tube is adjusted by screw with fine grailnathins. The directions for Operating are as follows: Have the com bining-tube in position to allow sufficient water to condense the steam when the start ing-valve is wide Nam; then ot.,11 starting-valve slightly : when water shows at the overflow, open the starting-valve wide, where it slemld remain while injeetor is at work. The quantity of wider is graduated by moving the combining-tube. Toward the discharge gives more, and toward the steam gives less miter. To use as 21 heater, close overflow by moving combining tube against the discharge, and upon steam-valve to admit what steam is required.
The Little Giant Stationary Injector is similar to. the locomotive injector, but has no lever-starting valve. When used to raise water, a lifter is placed in the water-pipe with an independent jet.
The Nalion-ca Automatic Injector, made by the National Brass Mfg. Co., of Cleveland. is shown in Fig. 4. It will lift up to 20 ft., according to the surroundings, and will work equally
well when taking water with a pressure. It does not need any adjustment from 20 to 125 lbs. steam-pressure, and it will take water heated to 130°. The parts numbered in the sectional view are the following : 1, delivery-tube; combining-tube ; 3, lifting-tube ; 4, steam-jet; 5, immediate cut-off ; 6, overflow-check ; 7, overflow-cap.
The Metropolitan Automatic Injector, made by the Ilayden & Derby Mfg. Co., of New York, is shown in Fig. 5. Referring to the letters on the cut, the parts are as follows: S, steam jet ; V, suction-jet ; C, 1), combining and delivery tube; IA ring or auxiliary check ; P, flow-valve ; O. steam-plug ; X, steam-valve and stein ; packing-nut ; li, steam-valve handle ; and X, overflow-cap. It does not require any regulation of any valves in the suction pipe for varying steam-pressure. It will start on 2.5 lbs. steam-pressure, and the steam-press ure can then be run op to 140 lbs. and back again to 25 lbs. without any adjustment of any globe-valves. At all steam-pressures from 25 lbs. to 140 lbs. it is absolutely automatic, and will always restart should either the steam or water supply be interrupted. It is either a lifting or non-lifting machine. It will lift 20 ft., and will always start, no matter how hot the suetion-pipe becomes.
Korting's Universal Double-Tube Injector, made by L. Schutte & Co.. of Philadelphia, is shown in Fig. 6. it is a combination of two steam-jet injectors, the first one proportioned for lifting and delivering the water under some pressure into the second, which forces it into the boiler. The quantity of water delivered by the first apparatus to the second is in proportion to the pressure of steam, so that the first actg as a governor for the second. The first has a proportionately small steam-nozzle to insure high suction, and, as it delivers water to the second under pressure, the latter can deliver the water to the boiler at a high temperature. During working hours the stop-valve on the boiler (which may be any kind of a valve) remains turned on, and the stopping and starting are solely effected by the lever A operating the valves in the steam-chamber of injector.