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Патент USA US3025951

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March 20, 1962
E. o. BLODGETT ETAL
3,025,941
SELECTIVE DATA TRANSLATING SYSTEM
Filed March 27, 1959
16 Sheets-Sheet 1
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.(TABULATE)
octoger fgz, 1958
Mr. John A. J nes
CODE
123%,0} [-1311
High Street
New York New Y
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Dear Mr. Jones:
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AID-1
This ’is a demonstration of a data translation
system as applied to letter writing‘.
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also be used to acknowled e orders or for
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the1 preparation of invoices.
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The date was printed automatically.
The inside
name and address was automatically punched into
AID_125
another ttape for later use.
In preparing letters and other documents, various
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amounts ‘$100.00! of money may be selected at
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high speed.
DATA SELECT
CODE 12345,_
AID-6
Any variable information can be
selected either manually g 1231456! or’ automatically
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shirts)
ties
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shirts) for use as desired.
MANUAL AID-33
CARRIAGE RETURN
Very truly yours,
START READ (s5)
AID
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The Smith Company
EDWIN O. BLODGETT
GILBERT A. DENIS
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ATTORNEY
March 20, 1962
E. o. BLODGETT EI'AL
3,025,941
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Filed March 27, 1959
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March 20, 1.962
E. o. BLODGETT ET AL
3,025,941
SELECTIVE DATA TRANSLATING SYSTEM
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March 20, 1962
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SELECTIVEDATATRANSLATING SYSTEM
Filed March 27, 1959
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March 20, 1962
E. o. BLODGETT ET AL
3,025,941
SELECTIVE DATA TRANSLATING SYSTEM
Filed March 27, 1959
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March 20, 1962
E. o. BLODGETT ET AL
3,025,941
SELECTIVE DATA TRANSLATING SYSTEM
Filed March 27, 1959
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March 20, 1962
E. o. BLODGETT ET AL
3,025,941
SELECTIVE DATA TRANSLATING SYSTEM
Filed March 27, 1959
16 Sheets-Sheet l2
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March 20, 1962
E. o, BLODGETT ET AL
3,025,941
SELECTIVE DATA TRANSLATING SYSTEM
Filed March 27, 1959
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March 20, 1962
E. o. BLODGETT ET AL
3,025,941
SELECTIVE DATA TRANSLATING SYSTEM
Filed March 2'7, 1959
16 Sheets-Sheet 14
March 20, 1962
E. o. BLODGETT ET AL
3,025,941
SELECTIVE DATA TRANSLATING SYSTEM
Filed March 27, 1959
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March 20, 1962'
E. o. BLODGETT ET AL
3,025,941
SELECTIVE DATA TRANSLATING SYSTEM
Filed March 27, 1959
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OFF- NORMAL
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United grates Patent U ”
1
3,025,941
Patented Mar. 20, 1962
2
pared and reproduced, this would necessitate not only
3,025,941
SELECTIVE DATA TRAN§LATING SYSTEM
Edwin G. Blcdgett and Gilbert A. Denis, Rochester, N.Y.,
assignors to Commercial Controls Corporation, Roches
ter, N.Y., a corporation of Delaware
Filed Mar. 27, 1959, Ser. No. 802,331
40 Claims. (Cl. 197—20)
The present invention relates to data translation systems
and, particularly, to systems in which data to be processed 10
may be selectively derived from a record medium and
the preparation of numerous differing form-letters texts
but also the careful pre-collection into appropriate groups
of all those to whom a particular text is to be directed.
It would be more desirable that all of this be accom
plished in an automatic manner controlled only by a
record identifying the individual addressee concerned
and without regard to any particular collating of ad
dresses into categories and category sub-divisions.
A data processing system capable of accomplishing the
desirable results last mentioned would have much more
widespread utility in business applications than the mere
preparation of the form letter discussed. The record
tape which enabled the preparation of a form letter relat
particular utility in connection with data printers uti
lizing punched-tape record media and will be described 15 ing to solicitation of orders for speci?ed products would
then be available for invoicing the products sold as a re
in that connection.
sult of the solicitation. In preparing the invoice forms,
Punched-tape has been widely accepted in integrated
much of the variable data required is found in the record
data processing systems for automatic operation of docu
tape. In particular, there is recorded with the name of
ment and data originating machines. A tape-controlled
printing machine of this nature is the subject of US. 20' the addressee his functional category and category sub
division in the merchandising ?eld, the offered quantities
Patent No. 2,700,446, granted January 25, 1955 to E. O.
and prices, and the terms and conditions of sale of the
Blcdgett, and an improved tape-controlled printing ma
solicitation as applicable to him. Thus it would be de
chine is disclosed in the Edwin O. Blcdgett et al. U.S. Pat
sirable that all of this information be again used by auto
ent No. 2,905,298, granted September 22, 1959. The
printing machine disclosed in the patent last mentioned 2 01 matic information selection in accomplishing the acknowl
edgement of orders received and the invoicing of goods
utilizes automatic program control to facilitate the prep
sold. It would further be desirable for inventory con
aration of documents and accompanying by-product
trol purposes that a by-product tape be produced during
punched-tape record media for use in further integrated
preparation of order acknowledgements or preparation of
data processing.
Tape-controlled printing machines of the type last men 30 invoices, or both, in order that the by-product tape may
later be used to make a record by individual product of
tioned provide very high speed and extreme accuracy in
the total number of each item ordered and the total num
reproducing documents and in eliminating repetitive man
ber of each item shipped. For sales and management
ual keyboarding operations. They permit much repeti
purposes, it would further be desirable that this by-prod
tive or invariable data to be automatically reproduced in
selectively supplied to data translation devices for utili
zation. While the invention has wide utility, it has
the preparation of successive documents of like or similar 35 uct tape be available for use in summarizing the total
dollar sales for each item invoiced during selected pe
format while at the same time enabling manual printing
riods, and that invoice totals be selectable at will from
operations for the insertion of variable data required in
the by-product tape for purposes of recording total sales
the preparation of each individual document. It has
within a given period of time.
heretofore been proposed that invariable data be sup
It is an object of the present invention to provide a new
plied from one record medium and a limited amount of 40
and improved data translation system capable of accom
selectable variable data, such as names and addresses,
plishing the desirable results heretofore enumerated.
be supplied item-by-item in succession from a second
It is a further object of the invention to provide a data
record medium in the preparation of such documents as
translation system wherein plural data storage record
form letters and the like. However, it is often desirable
even in such simple applications as form letter prepara 45 media may be utilized to supply under program control
the data stored in either medium selectively to data trans
tion that a wide range of variable data be supplied as
lating devices for utilization, the selection of the record
and when required and without regard to the order of
medium to be used for this purpose at any time being
recording of successive data items in the second record
effected either under manual control or in response to
medium, and that the selection of such variable data be
subject to automatically controlled program selection 50 prerecorded program control stored in interspersed rela
tion with the data information of either record medium.
thus to enable a high degree of ?exibility in document
It is an additional object of the invention to provide a
preparation.
data translation system wherein a record medium storing
This may conveniently be illustrated by way of ex
plural categories of data with category identifying ad
ample. Suppose that a form letter is to be directed to
several categories of merchants of different functional 55 dresses may be searched at a high reading rate to locate
a particularly category of data, with the selection of cate
category, or to merchants of different size within any
gory made either manually or by means of other recorded
given category. The form letter will be comprised in
selection control as desired, after which any data of the
large part of invariable information applicable to all ad
selected category when located in the record medium is
dresses to whom it is directed, but it is often desirable
both to use a personal Salutation and to make such neces 60 read at a lower reading rate to control the operations of
data translating devices which may under selective con
sary changes to the text of each individual letter as to
trol either print the data or re-record it in whole or in
render it appropriate to the particular category and
part or both print and record the data in whole or in part.
category sub-division in which the addressee falls. Thus
It is yet a further object of the invention to provide a
quoted quantities and prices and the terms and condi
data translation system wherein a record medium storing
tions of sale of a product may Well differ between sev 65 plural categories of data with category identifying ad
eral functional categories of merchants and may also
dresses may be searched at high reading rate to locate
differ between merchants of different size within the same
and supply to data utilization devices at much lower read
category. While individual form letters to each cate
ing rate each successive information item or successive
gory and category sub-division of merchant could be pre
block of information having a selected category address
3,025,941
3
4
motorized unit cable connected to the printer structure
and having the general construction of that disclosed in
the E. O. Blodgett et al. US. Patent No. 2,927,158,
granted March 1, 1960, entitled Code Form Converter,
while skipping over all other recorded information of
the medium, thus collating all data of the category se
lected; and one wherein selection of the data category
may be made either manually or automatically as de
sired and may be readily changed by manual or program
control at any time.
and assigned to the same assignee as the present applica
tion.
The arrangement herein described may also in
It is' a'fu'rther object of the invention to provide a data
clude, constructed integrally with the printer or reader
translation system ' wherein plural data storing media
readers are so inter-controlled that each initiates a record
manual data selector by which numeric information up
last mentioned or even as a separate auxiliary unit, a
medium reading operation at command of the other, in 10 to a maximum of ten digits and one or more symbols
may be manually selected for programmed use in a man
ner hereinafter described. Either tape reader has the
which one reader on command of the second repeatedly
searches its record medium for particular data having an
ability under manual or programmed control to skip
identifying address speci?ed by the medium read at the
over recorded information until the skipping is terrni~
second reader, and in which the one reader upon locating
the addressed data halts and awaits a further read com 15 nated under program control or manually. The system
also has the ability to effect non-printing of information
mand from the second reader or immediately proceeds to
read from either tape. This latter operation is subject
supply the addressed data at slower reading rate if such
to initiation either manually or under program control;
reading command had previously been given prior to lo
it is terminated manually if manually initiated, or other
wise may be manually halted (but not manually termi
nated) and is eventually terminated only by a programmed
cating the addressed data.
Other objects and advantages of the invention will ap
pear as the detailed description thereof proceeds in the
print restore code read from a tape. The information
read but not printed during a non-print operation may
and in which:
be recorded, under selective program control, in one or
FIG. 1 illustrates by way of example a typical form
letter prepared by use of the data translation system of 25 both of the by-product tapes previously mentioned so
that any information read by either of the two tape
the present invention;
readers but neither printed may be recorded in whole
FIGS. 2a-2g, arranged as indicated in FIG. 2, repre~
or in part in either one or both of the by-product tapes
sent the electrical control system of a data translation
light of the drawings forming a part of this application
by selective control of the by-product tape punches.
For convenience of description, the punched-tape
system embodying the invention; and
FIGS. 3a-3h, arranged as indicated in FIG. 3, show the
electrical circuit arrangement of a manual data insertion
unit which may be used with the data translation system
of FIG. 2.
GENERAL ORGANIZATION AND OPERATION
The data translation system herein described utilizes
a punched-tape controlled printer of the type shown in
' reader which forms a component of the printer as in
the aforementioned Blodgett et al. Patent No. 2,905,298
will be hereinafter referred to as the printer tape reader
whereas the second ‘punched-tape reader will be referred
35 to for convenience as the motorized reader.
It will be
- understood that this designation is used simply for con
the aforementioned Blodgett or Blodgett et al. patents,
to which reference is made for an understanding of the
venience of description, and does not imply that the
scond tape reader is necessarily a separate and distinct
motorized unit as distinguished from a construction
general mechanical construction and operation of the 40 wherein it also is a component of the printer.
The punched-tape used in the system herein described
printer and its associated punched-tape reader and by
utilizes an 8-level punch code which may be similar to
product tape punch. As there explained, data and func
that used in the aforementioned Blodgett et al. Patent
tional control information is recorded by combinational
No. 2,905,298 in so 'far as normal alpha-numeric char
arrangements of code bits positioned in successive groups
acters, symbols, and functional control information is
each identifying an alpha-numeric character, a symbol, or
a function to be performed‘ In the arrangement herein 45 concerned. The eighth level of the code is particularly
used, however, to identify any of 127 different address
described, this punched-tape uses a maximum of 8 code
or classi?cation codes used at the beginning of each item
bits and thus is said to convey 8 channels of information.
or block of information which is to form the subject
The punched-tape reader used to read the recorded in
of an information search peformed by the motorized
formation has a tape feed arrangement for moving the
reader during operation of the system. The address codes
tape code bit group by code bit group through the reader
thus differ from normal information codes by always
and each code group is read by aligned reading pins of
including a ‘code bit in the 8th channel. Each item, or
which there is one pin for each code level used. Those
block of information, thus identi?ed by an address is
reading pins which project through apertures of the tape
terminated'by an address identi?cation code, a switch
during a reading operation complete electrical circuits
which may be used either to actuate a code translator 55 code, or a stop code depending upon the operational
programming desired. The functions of the several codes
structure in the printer, and thereby effect power driven
last mentioned will shortly be explained. These punched
key lever and functional control actuations of the printer,
tapes used with the data translation system herein de~
or to energize punch magnets of a punch structure to
scribed, and having data addresses identi?ed by an 8
effect repunching of the information into a by-product
level code bit, can be prepared as a by-product tape of
tape. Key lever and functional control operations of
the printer either by manual key lever operation
the printer also energize coded combinations of electircal
or by suitable programmed control of the printer
output circuits which may control the punch to record
by a program tape or edge-punched card read by
in the by-product tape selected portions or all of the in
the printer tape reader. The motorized reader in
formation necessary to duplicate the printed copy and its
format. As further pointed out in the aforementioned 65 cludes seven manual switches which can be operated
in various combinations to select any one of the 127
Blodgett et al. patent,'an additional punch unit may be
different address codes available, or any one of these
provided and coded information may at any time be sup
addresses may be speci?ed by an address code recorded
plied to both of these punch units or to only a selected
in the tape of the printer tape reader. The address of
one of them so that the by-product tapes which they pro
duce may contain all or only speci?c information items, 70 information for which a search is to be made in the
motorized reader tape thus can be supplied either by
and this may be accomplished under program control in
the manual setting of these seven switches or by an ad
formation recorded in the tape passing through a tape
reader.
’
>
The data translation system herein described includes
a second tape reader which may be included in a self 75
dress supplied from the punched tape read by the printer
tape reader.
Whenever an address identi?ed information item or
3,025,941
6
Table A
block of information is desired from the punched tape
of the motorized reader, the operation of the latter is
controlled to initiate a search at a high reading rate un
Aid Code
til the information is found. This search may be initiated
manually, in which event the identifying address is nor
Data
. to acknowledge orders.
production orders.
mally established by manual operation of the seven ad—
_
dress selection switches earlier mentioned, or may be
invoices.
(abcdefg).
initiated automatically under control of information read
from the tape at either reader. If the search is initiated
by the printer tape reader, an address identi?cation code
Mr. John A. Jones
377 High Street
New York, New York Jones.
Mr. William Green
132 Louisa Street
(referred to herein as an AID code) is ?rst read and
this is followed by the address of the information sought;
the address thus provided by the printer tape reader is
stored in the motorized tape reader which immediately
begns the search and continues it until the addressed in
formation is located. While this search is in progress,
the printer tape reader continues normal operation un
til it reads a switch code which thereupon halts the
printer tape reader and transfers control of all subse
quent operations to the motorized tape reader. It the
latter has located the addressed information and has
sales orders.
Williarnsport, Penna. Green
125 ___________________________________ -I
Data Select Code, 123451), Selects 27.
Data Select Code, l2345,-, Selects (123456).
It will be noted from the example of FIG. 1 that the
printer tape reader upon being manually placed into
operation begins with a tabulation operation and prints
the month, after which a data select code is read by which
to obtain the day of the month from the manual data in—
and proceeds to read the-addressed information to the
sertion unit. After reading the day from this unit, a
printer for reproduction or to a tape punch or punches
for recording of the information should the operation 25 return is automatically made without further command
to the printer tape reader for typing of the year and car
at that time be of the non-print character. If the ad
riage return to begin typing the name and address of the
dressed information has not been located at the time
addressee. By way of illustration, the example of FIG. 1
the switch code is read by the printer tape reader, the
indicates that before completion of printing of the month
latter nevertheless halts its operation and the motorized
the printer tape reader requests that a search start for
tape reader continues its search and immediately reads
halted awaiting the switch code, it responds to the latter
the addressed information as soon as it is located.
Now if the addressed information is terminated by a
further search command, the motorized reader immedi
ately initiates a new search for information having the
same adddress as that last sought and in this instance 35
reads the addressed information out as soon as it is
located. If the addressed information is terminated by
a stop code, the motorized reader operation halts to per
information having the address identity represented by
code 12. From Table A, it will be noted that the infor
mation addressed by the printer tape reader is comprised
by the name and address of the addressee. The search
for this data is immediately started by the motorized tape
reader and proceeds concurrently with further operation
of the printer tape reader and intervening supply of the
date by the manual data insertion unit.
The information which is the subject of the Search by
address selection effected by manual setting of the seven 40 the motorized reader is automatically read out by the
latter when located and upon receipt of a switch code
address switches earlier mentioned, or may include one
mit a further manual operation. This may include a new
or more manual printing or other desired manual opera~
read by the printer tape reader following the printing of
the date and appropriate positioning of the form to re
tions. Resumed operation by use of either reader is
ceive the addressed information. This addressed infor
available and is effected manually. If the addressed in
formation read-out by the motorized reader is terminated 45 mation includes a switch code which returns the opera
tion to the printer tape reader where the form is again
by a switch code, this code causes immediate halt of oper
spaced and the saiutation printed out up to the point
ation of the motorized reader and initiates further opera
where the addressee’s name should appear, whereupon a
tion of the printer tape reader.
switch code is read to return the operation to the motor
This alternate transfer of reader operation between the
printer tape reader and the motorized tape reader is here 50 ized tape reader and complete read-out of the last word
“Jones” of the addressed information. Note in this that
inafter referred to for convenience as duplex operation,
no new data search was called for between read-out of
and is effected only upon manual setting of a duplex
the ?rst portions of the addressed information and read
switch provided for this purpose. Where the record me
out of the last word of the addressed information by the
dium read by the printer tape reader does not itself re
motorized tape reader. Read-out of the name “Jones” by
cord address identity information but merely utilizes a
the motorized tape reader is followed by a switch code
switch code, it is possible manually to select an address
which returns the operation to the printer tap reader.
by means of the seven address selection switches and
The printer tape reader upon completing the print-out
thereafter manually to actuate the motorized reader
of the ?rst word of the letter is shown by way of illustra
search switch to effect a single search operation all of
which may be accomplished while the printer tape reader 60 tion as calling for a new search by the motorized reader
for information identified by the code address 1, but the
is continuing through a period of its operation. Now the
printer tape reader after calling for this search continues
subsequent reading of a switch code by the printer tape
operation until it reads a switch code near the end of the
reader simply effects read-out by the motorized tape
paragraph to transfer operational control again to the
reader of the information located by this manual opera
65 motorized reader. The latter upon completing its search
tional procedure.
proceeds to read out the words “to acknowledge orders”
A typical result of the duplex mode of operation last
and then reads a switch code which transfers the opera
described is illustrated in FIG. 1 which involves the prep
tion back to the printer tape reader.
aration of a form letter. All information not under
Shortly after the printer tape reader resumes operation,
scored in this letter is supplied to the printer from the
it again calls for a search for information identi?ed by
70
printer tape reader whereas all underscored information
the address code 5 and shortly thereafter again reads a
is supplied from the motorized tape reader or a manual
switch code to transfer operation to the motorized reader
data selector as indicated by the following Table A which
which ?nds the addressed information and reads out the
lists typical variable data available for selection by an
word “invoices” followed by a switch code which returns
appropriate address identi?cation code.
I
75 the operation to the printer tape reader.
7
3,035,941
8
This alternate supply of data information to the printer
SYSTEM ELECTRICAL CIRCUIT ARRANGEMENT‘
from the two tape readers continues as indicated in FIG. _1
The electrical circuit arrangement of the data transla
tion system‘ of the present invention is shown in FIGS.
2a—2g, ‘which should be‘ considered together arranged as
to the completion of the letter. '- In vthis, it will vbe noted
as explained in the second paragraph of the letter that the
name and address of the addressee was automatically
recorded in a by-product target»)! the‘ tape pnrish'imit’as'so
ciated with the printer and under program control of the
Printer tape reader- It Will further be nqticied that in the
shown in FIG. 2‘.
'
1. OPERATION UNDER CONTROL OF THE PRINTER
TAPE READER
'
The system includes a manually actuable printer reader
during printing of the last sentence read a second data 10 start read switch S1 which, upon actuation, opens a pair
of contacts Sla and closes a pair of contacts Slb to
select code to receive further data “(123456)” manually
energize a reader control relay PRRC and a switch un
set up in the manual data selector. As in connection with
latch'magnet PRS of a switch relay SW through a circuit
the printing of the date, the printer tape reader automati
which includes the normally closed contacts SCRT of the
cally resumed control upon completion of this read-out
printer. The latter contacts are opened and remain open
of information from the manual data selector. It may
during each carriage return or tabulation operation of
further be noted, as indicated in the last sentence of the
the printer. The unlatch magnet PRS operates in associa
letter, that repeat search operations by the motorized tape
tion with a magnet MRS of the switch relay SW. Upon
reader may be effected by terminating each block of
energization of the magnet MRS, the switch relay SW
addressed information with the address identify code
moves its contacts to (and mechanically latches them in)
(AID). This repeat search operation continues auto
one position enabling operation of the motorized tape
matically to locate further data having the address previ
reader. Subsequent energization of the unlatch magnet
ously supplied by the printer tape reader and now stored
PRS serves to unlatch the contacts of the switch relay
in the motorized tape reader. The repeat search is shown
SW and position them to enable operation of the printer
as interrupted by a stop code to enable a new address to
tape reader. FIG. 2 shows the switch relay contacts in
be manually set up by the manual address selection
the last mentioned (unlatched) position. The relay
switches and a manual carriage return operation to be
PRRC having been thus energized is thereafter main
effected, after which the repeat search is manually re
tained energized through a hold circuit which includes
started and continues for all information having the latter
the relay contacts '21 and 22 of a punch error relay RPE,
address. The great ?exibility and utility of the duplex
form of system operation will be evident from this simple 30 the relay contacts PRRC l-—-2 now closed, the tape reader
tape contacts PSRT which are closed when a tape is in the
example of the results which it is capable of accom
printer tape reader in readiness to be read, normally
plishing.
closed stop~code l 2-4 reader contacts of the printer
If the duplex switch previously mentioned is not manu
tape reader contact bank 13, the contacts 28L and 29L
ally actuated to its duplex position, the operations of each
preparation of the last paragraph the printer tape reader
reader are as described except that any switch code read
during operation of either reader is ignored by that reader
and the operation of the reader continues as though the
switch code did not exist. This type of operation is par
of the switch relay SW now closed, a motorized reader
stop switch S2, and a printer reader stop switch S3.
When the start read switch S1 is manually released and
returns by spring bias to the position in which its contacts
ticularly useful in connection with the motorized tape
Sla are closed and its contacts Slb open, a relay RFC
the latter switch.
tape reader operation, the normally closed contacts 85a
reader by which to effect searches for single items or 40 is energized through a circuit which includes the now
closed contacts 2L and 3L of the switch relay SW, a
blocks of information identi?ed by an address manually
conductive link it} connecting circuit terminals 11 and 12,
set up in the seven address switches earlier mentioned or
the cam actuated contacts STCl of the printer which are
by which ' all information having a given identifying
closed each time the printer completes a cycle of its
address may be collected and printed or re-recorded in a
by-product tape by a repeat search. To effect a single 4:5 operation, the normally closed contacts 23 and 24 of a
delay control relay RDC provided in the printer for pur
search, the addressed information is terminated by a stop
poses presently to be described, the normally closed con
code. A further search for information identi?ed by the
tacts of a switch S4 which is provided in the printer and
same address may then be effected simply by pressing a
which is actuated by any of several key levers effecting
motorized reader search switch, or the address of the
printer functions requiring a temporary halt in the printer
information desired may be changed before actuation of
If all information identi?ed by the
same address is to be collected, this may be effected in
either of two manners. In the ?rst of these, all data is
of a motorized reader start read switch S5, the normally
closed contacts 86a of a printer non-print switch S6, the
now closed contacts 87a of a printer skip switch S7, the
terminated by a stop code and collection is effected by
repeated manual actuations or the motorized reader search 55 normally closed contacts Sla of the start read switch S1,,
and the normally closed contacts SCRT earlier mentioned.
switch. The second manner of collection is automatic,
The contacts 5 and 6 of the relay RFC now close to re
and involves the pre-recording of an address identi?cation
move the printer cam actuated contacts STCI from the
code (AID) terminating each item or block of informa—
energizing circuit last traced.
tion to be collected, so that the motorized reader begins
The printer tape reader is now placed in operation by
a new search immediately upon completing read-out of
energization of its reader clutch magnet PRC through a
the information located by the preceding search.
circuit which includes the now closed contacts 3 and 4 of
The motorized reader performs its searching operation
at a much higher reading rate than is permissible when
information is to be read-out to the printer or by-product
tape punch.
the relay PRRC, and the now closed contacts 3 and 4 of
the relay RFC to the energizing circuit of the relay RFC
last traced. The reader operation normally continues
Upon completion of each search and the 65 until its reader contact bank 13 reads a stop code l—2—4
initiation of an information read out operation, the reading
rate of the motorized tape reader is automatically reduced
to the highest rate at which the information can be utilized
or either of the stop switches S2 or S3 is manually actu
ated, all of which interrupt the hold circuit earlier de
scribed of the reader control relay PRRC, thereupon de
by the printer or by-product tape punch. This control 70 energizing this relay and causing its contacts 3 and 4
to interrupt the energizing circuit of the reader clutch
of the motorized reader reading rate thus minimizes the
magnet PRC. Thus it will be seen that the printer tape
required search time while permitting the system opera
reader once placed in operation will continue reading its
tion at the maximum rate which the printer or by-product
tape until it reads a stop code 1—2—~4 or a stop ‘switch
tape punch can receive and utilize the information with
75 is actuated.
out operational error.
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