Bell System Practices Plant Series Adjustments page 148

TABU LA TOR SHAFT
TABULATOR STOP,NO.
(APPROX. ONE INCH FROM RIGHT MARGIN)
PAWL MOUNTING ARM
REQUIREMENT
CLEARANCE MIDWAY BETWEEN MINIMUM AND MAXIMUM LIMITS OF OPERATING RANGE.
TO CHECK
TO DETERMINE MAXIMUM LIMIT
IMMEDIATELY TO RIGHT OF STOP NO.
0.030 INCH. (NOTE··· MEASURE ALL CLEARANCES AT STOP NO.
REDUCE GAP TO MINIMUM.
PAWL IMMEDIATELY TO RIGHT OF STOP NO.
STEP (E) FOR OTHER THREE STOPS. (G) GRADUALLY INCREASE CLEARANCE UNTIL CARRIAGE STOPS ONE
ANY COLUMN WHILE RECEIVING FIGURES G LETTERS X FROM TRANSMITTER DISTRIBUTOR.
SPACE BEFORE
( NOTE IF UNIT IS NOT EQUIPPED WITH XD CONTROL, PUT FILL-IN CHARACTERS OF LETTERS OR FIGURES
• • •
IN TAPE TO DELAY PRINTING UNTIL CARRIAGE COMPLETES TRAVEL.) (H) DECREASE CLEARANCE UNTIL TEN
LINES OF TABULAR OPERATION CAN BE MADE WITHOUT ERROR.(l)
CLEARANCE. (2) GAGE ALL CLEARANCES WITH FRONT FEED PAWL FARTHEST ADVANCED.
TO DETERMINE MINIMUM LIMITS··· (A) REPEAT STEPS (B) AND (C) ABOVE. (B) GRADUALLY DECREASE
CLEARANCE UNTIL CARRIAGE STOPS ().lE SPACE AFTER ANY COLUMN.
LINES OF TABULAR OPERATION CAN BE MADE YIITHOUT ERROR
TO ADJUST
IF MINIMUM LIMIT IS POSITIVE, ADD IT TO MAXIMUM LIMIT AND DIVIDE THE SUM BY TWO. SET RESULTANT AMOUNT
AS MIDPOINT OF RANGE. IF MINIMUM LIMIT IS ZERO OR LESS, DIVIDE MAXIMUM LIMIT BY TWO
AND SET THIS AMOUNT AS MIDPOINT OF RANGE. THE DIFFERENCES BETWEEN LIMITS NORMALLY IS NOT LESS
TH A N 0.045
INCH.
TABUL ATOR STOP SETTI NG
RIGHT MARGIN TABULA TOR STOP (WITH WIDE SHELF)
NOTE : PRIOR TO THIS ADJUSTMENT, CHECK THE FOLLOWING: RIGHT MARGIN
MOUNTING ARM OPERATING RANGE
POSITION PRINTING CARRIAGE AT RIGHT MARGIN (SPACING CUTOUT OPERATED). INSERT STOP WITH WIDE
SHELF IN SLOT IMMEDIATELY TO LEFT OF TABULATOR PAWL.
COLUMNAR TABULATOR STOPS
PLACE CARRIAGE IN POSITION TO PRINT FIRST CHARACTER IN COLUMN. INSERT STOP IN SLOT IMMEDIATEL Y
TO LEFT OF TABULATOR PAWL. STORE EXTRA STOPS IN SLOTS BEYOND PRINTING LINE AT EITHER END OF
SHAFT.
NOTE··· WHEN PRINTING FORMS, CHECK STOP SETTINGS WITH RELATION TO COLUMNS.
STOP S ON ALL MACHINES CONNECTED IN A CIRCUIT MUST BE THE SAME NUMBER OF SPACING OPERATIONS
FROM LEFT MARGIN.
148
Page
TABULATOR PAWL
TABULATOR STOP NO.
TABULATOR STOP NO.
(CENTER OF SHAFT)
1.
OPERATING RANGE (FINAL)
(A) SET FIVE TABULATOR STOPS AS SHOWN IN FIGURE. (B) POSITION PAWL
. • .
(C) POSITION ECCENTRIC TO SET CLEARANCE APPROXIMATELY
1.
(D) MARK COLUMN LOCATION BY PRINTING A CHARACTER ON PAPER. (E) POSITION
)
2.
(NOT ILLUST RATED )
(PAR.4.28 AND 4.29).
TABULATOR STOP NO.
2
3.
FOUR SLOTS APART
TABULATOR STOP NO.
(APPROX. ONE INCH FROM LEFT MARGIN)
1. WITH PLAY TAKEN UP IN CARRIAGE TO
AND MARK COLUMN LOCATION AS IN STEP (D). (F) REPEAT
GAUGE AND RECORD VALUES OF
(C)
GAUGE AND RECORD VALUE OF CLEARANCE.
(1}
4.
TABU LA TOR SHAFT
5.
INCREASE CLEARANCE UNTIL TEN
(PAR.4.27) A ND P A W L
CORRESPOND ING
, . • . ,�
�.
,..