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MULTIPLE
COLUMN
SElECTION
DEVICE
61
switches should be off. All cards with a selected digit
in any of the selected columns will sort into the pocket
corresponding to the digit. All cards with no selected
punching in selected columns will pass into the reject
pocket.
Multiple Column Selection
This operation selects automatically from a field of
cards, those cards which are punched with a predeter-
mined alphabetic, numerical, or combination indication
within any ten adjacent columns. In a single run,
selected cards of the desired classification are made to
fall in the reject pocket while the remaining cards are
deposited in the 12 pocket of the sorter. The sequence
of the unselected cards is not disturbed. By means of
this device, it is possible to select all the cards for a
specified branch, agent, product, date, part number,
man number, or other classification.
The control panel diagram illustrated in Figure 45
is wired for a combination alphabetic-numerical selec-
tion problem in which the indication is punched within
a range of ten columns, but not in adjacent columns.
Ordinarily, the brushes would be wired consecutively
for information punched in adjacent columns. The
digits representing a number, or the combinations of
digits and zones representing letters to be selected, are
wired from the selector hubs to the brushes which read
the indication from the card. Cross wiring
is
used as
illustrated whenever a digit or a zone
is
repeated. For
numerical multiple column selection, the zone punch.
ing and lower punching hubs are wired together as in
dicated. The zero-eliminate switches are turned off, the
multiple column selection switch is turned on, and the
series of brush selection switches are set to select. All
selected cards are deposited in the reject pocket, while
the remaining cards fall in the 12 pocket.
NOTE:
The multiple column selection device does
not recognize blank columns. If anyone or several of
the selected columns are unpunched, the multiple
column selection device will not analyze these blank
columns as unselected information. In the event that
all the selected columns are blank, however, the card
will sort into the 12 pocket.
Combination Alphabetic·Numerical Selection,
Zero eliminate cantrol switches
OFF
Multiple column selection switch
ON
All brush selection switch ..
set
to
SaECT
Fil2ure 45. Control Panel
Wirin~
- Multiple Column Selection
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