Fig.3 represents a front elevation, showing the pump-operating mechanism.
A casing
A' door
A2 V-Shaped partition
B lamp (or other calorific device.)
C two standards,
D sleeve
E tube
E', E2 cylindrical receptacles
F flanged cap
G gear-wheel
H Racks
I piston rods
J pumpingcylinders
K long rod/pitman
L rock-shaft
M gate
a, a' entrances
c, c' trunnions
j ledge
k crank arm
l crank arm
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