. Science of railways . Washers Fig. 2. Follower Packing LOCOMOTIVE APPLIANCES. 459 Once in two weeks at least, blow out the cup with steam,opening all valves wide with the exception of the filling plug,which should remain closed. When putting on the lubricator for the first time, or after ithas been off for repairs, follow up the packing nuts of the glasses,when the lubricator gets hot, so as to take up any slack causedby expansion. This will tend to keep the joints Fig. 3. LIST OF PARTS. 9 Condenser. 16. Filling Plug. 17. Hand Oiler. 18. Reducing Plug. Nut
. Science of railways . Washers Fig. 2. Follower Packing LOCOMOTIVE APPLIANCES. 459 Once in two weeks at least, blow out the cup with steam,opening all valves wide with the exception of the filling plug,which should remain closed. When putting on the lubricator for the first time, or after ithas been off for repairs, follow up the packing nuts of the glasses,when the lubricator gets hot, so as to take up any slack causedby expansion. This will tend to keep the joints Fig. 3. LIST OF PARTS. 9 Condenser. 16. Filling Plug. 17. Hand Oiler. 18. Reducing Plug. Nut and Tailpiece. 2 0. Water Valve. 21. Stud Nut. 2 Glass and Casing. 2 3. Feed Nozzle. 2 4. Body. 2 8. Gauge Glass and Casing. 2 9. Waste Cock. Valve. Top Drain Glass and Plug (Body),Body Pipe Glass Plug (Gauge Glass).Gauge Glass Cap. 460 LOCOMOTIVE APPLIANCES. NATHAN THREE-FEED TYPE BULLS-EYE LOCOMOTIVELUBRICATOR. The auxiliary steam valve (parts 38-39) is not an operatingvalve for the lubricator, but controls only the admission ofsteam to the auxiliary steam pipes leading from the condenserto the oil delivery pipes. In connection with locomotive engine lubrication it de-velopes occasionally, particularly with the use of super-heated steam, that under very severe conditions, the feedof the lubricator is retarded by th
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