[977]. Stauffer’s lubricator for thick oil, which is forced in by screwing down the cap.
[978]. Shaft bearing lubricator by the capillary action of pieces of cane, the lower ends of which dip into the oil cistern.
[979]. Endless string lubricator.
[980]. Single cock lubricator, with screwed cap for filling.
[981]. Double cock lubricator.
[982]. Hollow plug cock.
The last three are used to feed oil against steam pressure.
[983]. Lieuvain’s needle lubricator. A loose wire (one end of which touches the revolving shaft and the other is in the oil); keeps the oil flowing as long as the shaft is running.
[984]. The pressure of steam enters the cup above the oil, which is fed through an adjustable small valve at bottom.
[985]. Plunger or ram and cylinder lubricator, with ratchet feed worked from some reciprocating part of engine.