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CROSS COMPOUND Allt COMPRESSOHS
4~
Fig. 16.
Photographic Views of the Type "F-I-A" Mechanically
Operated Lubricator
TYPE "P·I.A" LUBRICATOR
The Type "F-1-A" Mechanically Operated Lubricator
is designed to feed the minimum adequate quantity of
oil positively to aU critical operating parts and at a rate
which is directly proportional to the compressor speed.
It is operated by a self-contained pneumatic engine, and
is equipped with six adjustable oil delivery pumps and
a two chamber oil supply so arranged that different oils
may be used for the steam and air ends. Four pumps
are connected to one chamber and two pumps to the
second but both chambers may be connected together if
desired.
Fig. 17 shows a sectional assembly of this lubricator
where reference numbers are given to identify the various
as they will be explained. The pipe connections
are also numbered from 1 to 9 for convenience of refer
ence and designation of each pipe as shown on the instal
lation diagrams.
Reference 28 shows the ratchet wheel which is dowel
ed to and readily removable from the oil pump actuating
cam 27. Reference 33 shows the operating' piston which
operates the ratchet wheel by means of pawls 4 and 4a,
The operating cam 27 rotates on a drilled spindle in
which there are two lubricating wicks 52 and 53, the
lower end of
wick reaching to the bottom of the oil
reservoir. The upper end of wick 52 is in a groove in the
cam spindle and lubricates the cam bearing by
action. Wick 53 extends above the upper plate of the
ratchet wheel assembly, and oil drawn up this wick by
capillary action flows down the inclined surface of the
plate to lubricate the operating and holding pawls at
43
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