Bell System Practices Plant Series Adjustments page 35

2.
Spacing Mechanism (Cont.)
30
NOTE: CHECK RELATED ADJUSTMENTS,
PARS. 2.43, 2.44, AND 2.47, IF
THE FOLLOWING ADJUSTMENTS
ARE REMADE.
OSCILLATING RAIL SLIDE
RATCHET
�
SPACING
FEED PAWL
SPRING BRACKET
CLAMP SCREW
SPACING FEED PAWL SPRING
EACH SPACING PAWL IN LEAST ADVANCED POSITION RESTING
AGAINST RATCHET WHEEL. EACH SPRING UNHOOKED FROM BRACKET
MIN. 2-1/2 OZS.
MAX. 4 OZS.
TO PULL SPRING S TC INSTALLED LENGTH.
NOTE: ON UNITS EQUIPPED FOR
THIS TENSION SHOULD BE
MIN.
MAX. 10 OZS.
TO PULL SPRINGS TO INSTALLED LENGTH.
OSCILLATING RAIL SLIDE POSITION
REQUIREMENT
CARRIAGE RETURN RING AND AUTOMATIC CARRIASE
RETURN-LINE FEED RING FREE TO ROTATE ON
SPACING DRUM (FIVE MOUNTING SCREWS LOOSENED) .
SPACING CLUTCH DISENGAGED. FEED PAWL , WHICH
IS FARTHEST ADVANCED, ENGAGING TOOTH
IMMEDIATELY ABOVE CUT-AWAY SECTION OF
RATCHET. CLEARANCE BETWEEN SLIDE AND PULLEY
TO ADJUST
POSITION SLIDE ON WIRE ROPE WITH CLAMP
SCREWS LOOSENED.
NOTE: FOR EARLIER DESIGN SEE PAR. 4.07.
MOUNTING SCREWS
CARRIAGE RETURN RING
AUTOMATIC CARRIAGE RETURN-LINE FEED RING
(AND SPACE SUPPRESSION RING)
OZS.
8
ISS 7, SECTION 573-115-700
SPACES PER INCH
6
Page 35