Teletype 28 - Page 110

SECTION 573-118-700TC
3. 30 Manual and Power Drive Backspace Mechanism (For Chadless Tape)
(Early Design) (continued)
(A) LATCH SPRING
Requirement
Backspace mechanism in unoperated
position
Min 14 oz---Max 2
7
6 oz
to start latch moving.
FEED PAWL, n
FEEDPAWL ~~
SPRING
LATCH
LATCH SPRING
(D) GEAR SEGMENT SPRING
Requirement
Spring unhooked from
bellcrank spring post.
Min 22 oz
Max 26 oz ------'
to pull to installed
length.
(E) ARMATURE BAIL SPRING
Requirement
Armature latch spring
unhooked
Min
3-1/2 oz
Max
6-1/2 oz------'
to start armature bail
moving.
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(B)
FEED PAWL SPRING
Requirement
Backspace mechanism in unoperated
position
,......--Min 8 oz---Max 15 oz
to start feed pawl moving.
(C) BELLCRANK SPRING
Requirement
Spring unhooked from plate extension
1
f ~Min 19 oz---Max 23 oz
r to pull to Installed length.
PLATE EXTENSION
LATCH EXTENSION
SPRING
ARMATURE BAIL
SPRING
(F) LATCH EXTENSION SPRING (Power Drive Only)
Requirement
Spring unhooked from latch extension
Min 1 oz---Max 2-1/4 oz _____ ..;.... _ _,
to pull to installed length.