Locomotive appliances . rd injector isclaimed by the manufacturers to be especially suitablefor high-pressure work. The machine is of the doubletube positive closing overflow type, but the lifting andforcing tubes are all in one line, and, in this respect, itdiffers in construction from the Metropolitan, Han-cock and other machines, where the lifting tubes aresituated below the forcing set. This injector also differs in several other particu-lars; for instance, the regulation of the water dis-charge is accomplished in a different manner fromany other injector. In the Lunkenheimer injector thea
Locomotive appliances . rd injector isclaimed by the manufacturers to be especially suitablefor high-pressure work. The machine is of the doubletube positive closing overflow type, but the lifting andforcing tubes are all in one line, and, in this respect, itdiffers in construction from the Metropolitan, Han-cock and other machines, where the lifting tubes aresituated below the forcing set. This injector also differs in several other particu-lars; for instance, the regulation of the water dis-charge is accomplished in a different manner fromany other injector. In the Lunkenheimer injector theamount of steam required to lift the forcing water isreduced in direct proportion to the amount o( water 164 LOCOMOTIVE APPLIANCES. discharged. In other forms of injectors the amountof forcing steam remains constant, while only thelifting steam and water are decreased. The effect ofthis reduction of all three items in proportion resultsin causing the discharge to be cooler at minimum thanin other injectors of this Fig. 99 Model Injector. The grading, as described in detail below, is accom-plished by moving the steam tube (2) in and out bymeans of the crank handle (56) situated at the backend of the machine. Mode of Action.—In starting, lever (59) is drawn LOCOMOTIVE APPLIANCES. 165 back slightly. This movement draws the steamvalve (7) back and unseats same partially, whichadmits the lifting steam through passages in cap (3)and huddler (4), out around steam tube (2), into thewater lifting tube (5), opening valve (11) and exhaust-ing partially through the valve (4) and also throughthe tube (6) and out through overflow valve (15) intothe atmosphere. The steam thus exhausted exerts astrong draught in the suction branch, discharges theair, and the water is lifted. When water appears atthe overflow, lever (59) is drawn all the way movement uncovers the ports in the movablesteam tube, admitting the jet of forcing steam, whichdrives the water through
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectlocomot, bookyear1901
