IBM 80 User Manual

SPECIAL DEVICES
AUXILIARY CARD COUNTING DEVICE
THE AUXILIARY card counting device on the Type
80 or Type 82 Sorter is a device for counting all cards
which pass through the machine. The counter on the
Type 82 operates at
650 cards per minute and the
counter on the Type
80 operates at 450 cards per
minute. They are not interchangeable. The principles
of operation and the circuits described in the following
paragraphs apply primarily
to the high speed auxiliary
card counter which
is available on the Type 82 Sorter.
The circuits for the card counter on the Type 80 are
very similar to those on the Type 82. The mechanical
principles for the counter on the Type
80 are described
under
Card Counters, in the Type 75 section of this
manual. When used as an auxiliary card counter on a
Type
80 machine, the counter shown in Figure 30 has
a manual reset knob in place of the reset gear shown.
The auxiliary card counter
does not affect machine
speed and all normal functions may be performed,
re-
gardless of the position of the card count switch. The
capacity of the counter
is 99,999, and it may be reset
to
00,000 by turning the knurled hand wheel. The
counter assembly and the card count
ON-OFF switch
are located on the front of the Type 82 sorter in an
easily seen position,
as shown in Figure 35. On a Type
80 Sorter, these units are located on the front of the
machine below the card magazine.
Type 82 machines equipped with an auxiliary card
counting device have larger power supply rectifiers
than do the standard Type 82 machines. Type
80
machines employ the same size rectifier whether or
not they are equipped with an auxiliary card counting
device.
The actual counting and accumulating
is done
mechanically by a Veeder type counter. Each time the
shaft of the Veeder counter
is rotated sufficiently far,
a 1
is added into the units position of the counter. The
mechanical carry from one position of the counter to
another,
is done internally in the Veeder unit.
The operation of the card counting device begins
with the card count commutator which
is located on
50
Fiaure 35. Auxiliary Card Countina Device
the feed knife crankshaft (Figure 36). The commutator
consists of a two-section cam which
is setscrewed to
the shaft.
For each revolution of the crankshaft, the card
count cam completes a circuit between the two brushes
which ride on the cam surface.
When cards are passing
through the machine, i.
e. when the card lever contacts
are closed, a circuit
is completed through the card
count cam and the card levers
to energize the card
count magnets once each card cycle.
When the card count magnets are energized (Figure
37) they cause rotation of the rotor because of its
tendency
to line up with the opposite pole pieces. The
total movement of the rotor
is limited by rubber stops
which also help to insure silent operation.
As the rotor
rotates, it drives the rotor shaft, which in turn trans-
mits motion through a 3 piece linkage assembly to
the shaft of the Veeder counter.

IBM 80 Specifications

General

Brand	IBM
Model	80
Category	Office Equipment
Language	English