Genera.l - Teletype 28 Manual

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CONTENTS
Transmitter control switch -
transfer type contacts (transmitter
PAGE
control only) • • • • . . • • . • • • . . • • • 105
Vertical tabulator slide retainer • • • • 103
4.
EARLIER DESIGN MECHANISMS . . . 125
BASIC UNITS. . • . . . . • . . . . . • . • • 125
Code Bar Mechanism
Code bar shift lever drive arm. . . . . 127
Code bar shift lever link guide
bracket. . • . . . . . . . . . . . . . • . . . . 128
Function Mechanism
Bell or motor stop function contact • • 143
Figs-ltrs shift code bar operating
mechanism . . . . . . . . . . . . . . . . . . 132
Function contact spring. . . . . . . . . . 144
Function reset bail blade. . . . . . . . . 133
Function stripper blade arms. . . . . . 141
Line Feed Mechanism and
Platen Mechanism
Single-double line feed lever . . . . • . 142
Main Shaft and Trip Shaft
Mechanisms
Anti-deflection plate. . . . . . . . • . . . 129
Clutch trip lever spring. . . . . . . . . • 130
Clutch trip shaft set collars . . . . . . • 129
Spacing clutch trip lever . . . . . . . . • 130
Positioning Mechanism
Horizontal positioning drive
linkage • . • . . . . • . . . . . . . . . . . 13 4, 13 5
Horizontal positioning drive
linkage spring • • • . . . . . . . . . . . 134, 135
Shift linkage spring. . . . . . . . • . . 138
Printing Mechanism
Printing arm. . . . . . . . . . . . . . . . . 139
Printing hammer stop bracket . . . . . 139
Ribbon reverse detent. . . . . . . . . . . 140
Ribbon reverse detent lever spring . • 140
Ribbon reverse spur gear ...•. · . • • 140
Type box carriage roller. . . • . . . . • 138
Type pallet spring . . . . . . . . . . . . . 139
Selector Mechanism
Bail lever guide. . . . . . . . • • . . . . • 125
Selector armature . . . . . . . . . . . . . 126
Start lever spring. . . . . . . . . • . . . . 125
ISS 8, SECTION 573-115-700TC
CONTENTS PAGE
Spacing Mechanism
Automatic CR-LF bell crank
spring . . . . . . . .... . . . . . . . . . . . . 136
Automatic carriage return and line
feed arm. . . . . . . . . . . . . . . • . • • • 141
Decelerating slide bell crank
spring . . . . . . • . . . . . . . . . • . • • • 137
Left margin. . . . . . . . . . . . . • • . . . 13 6
Margin indicator lamp. • . . . . . . . • • 145
Oscillating rail slide position. . . . . . 131
Printing carriage position . . . . . . . . 13 6
Right margin. . . . . . . . . . • . . . . . . 137
Spacing cutout transfer bail spring . . 137
Spacing feed pawl spring • . . . • . . . • 131
VARIABLE FEATURES . . . . . . . . . • 146
Horizontal Tabulator Mechanism
Cam plate stripper bail . . . . . . . . . .
Columnar tabulator stops . . . . • . . . .
Horizontal tabulator slide arm spring.
Operating lever adjusting plate . . . . .
Operating lever cam plate spring .. .
Operating lever extension link spring.
Operating lever slide arm . . . . . . . .
Pawl mounting arm operating
range (final) . . . . . . . . . . . . . . . . .
Pawl mounting arm operating
range (preliminary) . . . . . . . . . . . .
Right margin . . . . . . . . . . . . . . . . .
Spacing cut-out transfer bail set
collar . . . . . . . . . . . . . . . . . . . . .
Space suppression by-pass spring ..
Tabulator pawl spring . . . . . . . . . .
Tabulator shaft mounting brackets .. .
Tabulator shaft spring. . . . . . . . . .
Tabulator stop setting
(not illustrated) . . . . . . . . . . . . . . .
Trip arm latch bail. . . . . . . . . . . . .
Trip arm latch bail adjusting plate ..
Trip arm latch bail spring . . . . . . . .
Paper-Out Alarm Mechanism
148
151
148
146
148
146
146
151
150
149
148
149
149
149
146
151
147
147
147
Bell crank follower. . . . . . • . . . . . • 152
Bell crank follower spring . . . . . . . . 152
1. GENERAL
1. 01 This section is reissued to include paper
jam alarm and to add recent engineering
changes. Since this is a general revision, mar-
ginal arrows are omitted.
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