OP-755 Part 2 Pages 197-401 - Personal Page of GENE SLOVER

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line (34) to line (35) then into chamber (36). The pres sure
applied in this chamber overcomes spring and shifts the bypass
valve (37). Lines (38) and (39) from the operating circuit
are no longer by-passed through the valve spool, thus allowing
the system to build up pressure. Auxiliary pump pressure
is ported from line (41) around the by-pass valve spool
to line (40) and into chamber (42), moving the piston (43) to
compress spring (44) and release brake (45). Thereafter the
equipment is free to operate at a speed controlled by the pump
offset. Cam shaft (46) is worm driven to make one complete
revolution_for each 30 degrees of projectile ring rotation.
15. Rutin in!§, pas i t i o n, figure 34. - Valve (31) is depressed
the remainder of its stroke by the latch being forced out
of the notch by the rotation of cam (47). Pressure is then
ported from line (48) to line (49) and into the lower end of
the interlock valve chamber. The opposite end of this valve
6
OPERATING LEVER
NEUTRALJ
OUTPUT SHAFT "'==r~r)[AAJ,I~ 26
Fig. 34 - Projectile Ring Circuit Diagram
Running Position
/
is ported to tank through line (50), around the spool of valve
(25) and line (51) . Valve (28) is therefore free to shift.
Chamber (30) is then vented to tank via line (29), around valve
spool and line (51). Valve (31) then becomes free to move the
latch into the notch of cam (47) when the ring station is reached.
Ring deceleration is accomplished by cam action on the
pump yoke, while positioning of the ring at the station is affected
by the control latch shifting into the notch of cam
25