Internal Controls - IBM 80 Customer Engineering Manual

GROUP SORTING DEVICE
71
On a Type 80 machine, double master card opera-
tion may be accomplished by means of one or two rail
brushes. When only one rail brush is used, the trail-
ing corner cuts on trailer cards are placed on the same
end of the card as the leading corner cuts on master
cards. When two rail brushes are used, a special brush
switch is furnished to permit sensing trailer cards with
corner cuts on either end of the card. The special brush
switch can not
be
installed on machines equipped with
a front-rear switch.
INTERNAL CONTROLS
IN ADDITION
to the external switch and rail brush con-
trols several internal mechanical and electrical com-
,
ponents must be added to a standard Type 80 or 82
Sorter to equip it with a group sorting device. An im·
pulse emitter and several electrical timing commutators
are mounted inside the covers on the right end of each
machine. Figure 52 shows the location of these units
on a Type 82 machine. These units are located in a
similar position on Type 80 machines. All units are
driven by gearing from a special card feed crankshaft.
On a Type 82 machine, an additional electronic
chassis, time delay relay, and several necessary resistors
are mounted on the rear of the relay gate as shown
in Figure 53. Type 82 machines equipped with the
Figure 52. Internal Controls - Group Sorting Device
group sorting device have larger power supply recti-
fiers than do the standard machines.
On Type 80 machines, slate base relays are used in
place of tubes for storing the necessary information.
These relays, along with the necessary additional re-
sistors, are mounted in a special cabinet on the rear of
the machine. The location of these items inside the
cabinet is schematically shown on the Type 80 group
sort wiring diagram 292052-B. Type 80 machines
equipped with the group sorting device employ larger
power supply rectifiers than do the standard machines.
CIRCUIT DESCRIPTION
THE
CIRCUITS
described herein for group sorting per-
tain to a Type 82 machine equipped with the group
sort device. Figure 54 is a reproduction of the Type 82
group sorting wiring diagram 270097·A. All circuit
description pertaining to group sorting will refer to
this figure. (The wiring diagram for a Type 80 machine
equipped with group sorting is 292052-B.)
When the machine is set up for normal sorting, the
sorting circuit operates in a similar manner to those
Figure 53. Type 82 Group Sort Relay Gate, 115 volt AC