I do not propose to attempt to illustrate the vast tribe of “greasers”
of all kinds. They would easily fill a moderate volume, but scarcely
repay the reader for perusal. I shall content myself here as elsewhere
by indicating the types of most interest and importance to the machine
draughtsman.
Besides the simple cup or enlarged oil hole, oil box, and grease cup,
the following are the most commonly employed:--
=971. Oil pan= for gearing, worms, wheels, &c.
=972. Revolving wire lubricator;= carries a drop of oil on to the shaft
at each revolution.
=973. Roller and pan lubricator.= Can be employed also for gum, paste,
paint, &c.
=974. Screw ram lubricator,= to force lubricant into a cylinder or pipe
against pressure, with non-return valve.
=975. Telescopic tube lubricating device,= for reciprocating or
revolving joints, such as crank pins.
=976. Another tubular device= for crank pins; a hollow cup on end of a
tube stands opposite the centre of the shaft, and can be fed with oil
while revolving, the oil running down the tube during the lower half
revolution.
=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.
Lubricating or inking rollers to evenly cover a flat surface are
placed at an angle of about 10° to the direction of motion of the
surface to be lubricated or inked.
Large engines are fitted with an oil reservoir, and pipes are led to
all joints, bearings, &c., with small cocks for regulation.
[Illustration: 967.-985.]