Патент USA US2401462

June 4, 1946-
2,401,462
H. P. CLAUSEN
APPARATUS FOR DETERMINING THE PROFICIENCY OF CODE STUDENTS
4 sheets-sheet 1
Filed April 20, 1944
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APPARATUS FOR DETERMINING THE PROFICIENCY OF CODE STUDENTS
Filed April 20, 1944
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APPARATUS FOR DETERMINING THE PROFICIENCY OF CODE STUDENTS
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IN VEN TOR.
HENRY P CLAUSEN.
Ahujs .
June 4,1946.‘
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a. P. CLAU'SEN
2,401,462
APPARATUS FOR DETERMINING THE ‘PROFICIENCY OF CODE STUDENTS
Filed April 20, 1944
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vSheets-Sheet 4
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INVENTOR
HENRY
CLAUSEN
ATTORNEYS
Patented June 4, 1946
2,401,462
UNITED STATES
PATENT OFFICE
2,401,462
APPARATUS FOR DETERMINING THE
PROFICIENCY OF CODE STUDENTS
Henry P. Clausen, White Plains, N. Y., assignor to
The Gray Manufacturing Company, Hartford,
Conn, a corporation of Connecticut
Application April 20, 1944, Serial No. 531,883
29 Claims. (Cl. 35—14)
1
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2
This invention relates to an apparatus and ‘ be moved in the direction of its length at a con
stant speed. The tape is supplied to a suitable
system by means of which students of the'vari
take-up reel lb after passing through the mech
ous communication codes, semaphore-signal sys
tems, and the like, may be rated at various speed
anism, but it ?rst passes across the top of a
stages during their courses of instruction.
5 table or conductive plate 4, which is grounded as
The general object of this invention is to pro
indicated at 5, and which cooperates with a pair
vide a much simpli?ed system as distinguished
of ?xed contact ?ngers 6 and 6’ supported so
as to engage the upper exposed face of the tape,
from other systems now in use, by means of
which all the desirable functions of apparatus of
as illustrated. The take-up reel is driven from
this type may be reliably carried out.
10 the motor M by means of pulleys P and P’ and
Other and more detailed objects of the inven
belt B. Another friction clutch F permits driv
tion will be apparent from the following dis
ing pulley lb at the proper speed to keep the tape
closure of several embodiments thereof as ex
1 in proper tension. The tape has two rows of
perforations, the uppermost of which represents
plained in detail below in connection with the
attached drawings.
15 the various standard code symbols as well as the
This invention resides substantially in the com
letters of the alphabet, and the digits. For
example, there is illustrated the code symbol of
bination, construction, arrangement and relative
location of parts, all as will be described in detail
one dot and one dash for the letter A, and of one
below.
dot and three dashes for the letter J, in accord
In the accompanying drawings,
20 ance with one standard code. The lowermost
Figure l is a diagrammatic and schematic lay- ‘
row of perforations consists of single, spaced
openings as shown, positioned on the tape alter
out of one form of system in accordance with this
invention;
natively with associated code signals. This lower
Figure 2 is a similar view of a modi?ed arrange
row of perforations comprises a control record as
ment somewhat fragmentary, likewise embodying 25 distinguished from the code record in the other
the principles of this invention; and
row.
Figure 3 is a similar view of another form of
the invention.
>
The ?xed contact 6 is connected to a switch
arm 1 positionable to any one of several con
Figure 4 is a perspective view of» the apparatus
tacts which are respectively connected to the
shown in Figure 1.
.0 headphones or sound reproducing device 8, the
now in use are complicated and are particularly
blinker light 9, and the standard telegraph
sounder Hi, all as diagrammatically illustrated.
expensive to build, install and maintain.
The other leg of the circuit of each of these
Some student code pro?ciency rating systems " "
Be
cause of these facts this present simpli?ed sys
tem was devised to provide an arrangement hav
devices is connected as indicated to a suitable
35 grounded source of energy. For example, the
ing all the necessary attributes of such a system "
headphones 8 may be connected in a buzzer cir
while adhering to principles of simplicity in con
cuit in a well known manner, and the lamp 9
struction with consequent reduction in the cost
and sounder I!) to suitable grounded sources of
current for the operation thereof.
of manufacture, installation and maintenance.
The structural and circuit combinations of 40
The contact ?nger 6' is directly connected to
this invention will be described ?rst in detail‘
an electromagnet I l, the other terminal of which
followed by an explanation of the operation of
is connected to‘ a suitable grounded current
the system with emphasis on the important fea
source. At this point it may be noted that in
tures thereof. The apparatus of the combination
order to keep the drawings simple the return
is controlled by means of a perforated tape I, v45 circuits for the various devices are not shown, as
made of any suitable material and fed from a "
are not the various grounded current sources re
supply reel Ia along a de?ned path of travel by
quired to operate the apparatus. The comple
means of a pair of friction wheels 2 and 3 engag
tion of these circuits will be obvious to those
skilled in the art. The electro-magnet ll is the
ing the tape on opposite faces thereof in driving
relation. A friction slip clutch F of any suitable 5p
known construction prevents the supply reel la“!
from overrunning. One of these friction wheels,
that is the wheel 2, as illustrated, is adapted to
operator of a relay comprising a pair of switch
blades l3 and I4, cooperating with a pair of ?xed
contacts, which are grounded at 12, as indicated.
Switch I3 is connected to an electromagnet M’
comprisingthe operator for the counter device I5,
as an electric motor M so that the tape I may 55 of any suitable type, actuated through the pawl
be connected to a suitable source of power such
2,401,462
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and ratchet 15, as illustrated, so that upon each
wired for a particular set of tapes, and will re
energization for the magnet I4 the counter will
quire rewiring for a different set of tapes. How
ever, since switches of this type are compact,
accumulate one additional digit. Switch blade
I4 is connected to an electromagnet i5’ and com
prises the operator for a pawl i6’ which cooperates
with the ratchet wheel. I‘! mounted on the rotat
able shaft l8 of a multiple switch structure.
Mounted on the shaft 18 at spaced intervals are
a relatively large number of them can be oper
ated by a single shaft l8, and hence the entire
machine can be adapted for rating a wide range
‘of lessons.
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‘
Returning now to switch Ill-20 it will be seen
the contact arms 20, 22 and 24 which are insulated, “that the ?rst position thereof, as illustrated, is
therefrom as shown, and all of which are at 10 the zero position, and it is to be noted that all the
other switch blades, of which the blades 22 and
tached to the shaft in radial alignment. The
24 are representative, are in the same position
contact arms 20, 22 and 24 cooperate respec-'
and out of circuit. The first contact of switch
tively with supports I 9, 2i and 23 upon which are
I>9--20 is connected by a wire, as shown, to the
mounted, as illustrated, a plurality oflcontacts.
The supports l9, 2i and 23 are held in ‘?xed rela 15 switch 30 in the keyboard, and to a contact in
the switch 2i—22. As illustrated, these two con
tion with respect to the shaft I8 and each posi
tacts correspond to the letter A, and wherever the
tioned so that the contacts thereof may be re
spectively engaged by the contact ?ngers 20, 22
and 24.
Switches of this type are well known
letter A again appears, in any one of these
switches and in additional switches in the set,
in the art in many forms. As will be explained 20 jtheywillallbe wired together and to the switch
30. ;This principle is illustrated with respect to
later, the number of switch units of this type
switch 2 i-,-22 where the letter A occurs twice, and
which are provided will depend upon the number
hence they are connected together and to switch
30. The key which controls switch 38 is indi
Switch arms 20, 22 and 24 are connected re 25 cated by the letter A, which will appear on its face
just as in a typewriter keyboard so that the
spectively by wires 25, 26 and 21 to the ?xed con
student knows that this is_ the key for the
tacts of a Switchblade 28 which is grounded as
shown.
letter A.
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At 29 is diagrammatically illustrated a key
The letter J, as i11ustrated,,is represented by
board which comprises a plurality of marked 30 the next contact of switch1l9,—2ll and is con
?ngerbuttons, similar to a typewriter, which indi
nected to switch 3| operated by the J key of the
vidually control switches, and which are arranged
control board. The switch 2 i—22 is shown wired
in a standard bank in accordance‘with any one
up for the word “Japan” and so we ?nd that the
of several known code systems. Such control
J contact of this switch is also connected to switch
boards are well known in the art in various forms, 35 3|. .In a similarv way the switches 32 and 33 are
and therefore a diagrammatic illustration is
connected to the P and N contacts. The com
adequate. The usual control board of this type
mon lead 34 for all of these switches is connected
is built to simulate a typewriter keyboard in which
to the electromagnet 35, forming the operator of
a relay which includes the switch 36. . One con
there is a key for each digit, a key for each letter
of. the alphabet, and a key for each of the various
tact of this switch is grounded and the other
commonly used punctuation marks. Such key
connects to an electromagnet 37, which is the op
boards only differ from standard typewriters in
erator for the pawl 38 which actuates a counter
the relative arrangement of the various symbols
device 39 like the counter l6.
_ The semaphore portion of the equipment in
depending upon the designer’s belief as to the best
relative positioning thereof. Such arrangements 45 eludes a circuit through the switch 40, arm con
tact B’, to an electromagnet 4|, which is the op
are commonly used for radio transmission of
code, printing telegraph systems, Teletype sys
erator for the pawl and ratchet 42 of a feed wheel
43 vfor the semaphore tape)“. This tape can,
tems, and the like.
for example, be in the form of a photographic
At this point reference is again made to the
tape i, which as illustrated, may be termed the 50 v?lm having a succession of images thereon rep
resenting the various fiag positions of a sema
character tape in that its upper row of per
of testlessons for which it is desired to adapt a
particular machine.
I
,
forations comprises indiscriminate combinations
of letters, numbers, punctuation marks, and the
other usual symbols employed in the exchange of
phore code, and these images may be arranged
as indiscriminate characters, or so as to form
the words of a message. The?lm ribbon 44 is
intelligence. Thus the switch ill-20 may be 55 passed along a de?ned path by a pair of guide
rollers 43 and 41 from a supply reel, not shown,
termed the character switch. As will be ex
to a take-up reel, not shown. This equipment
plained in a moment, switch 2 l--22 canbe termed
will normally be used so that. the image areas
the word or message switch, which when in use
can be exposed in succession through a window
will employ another tape similar to the tape I
but differently perforated in accordance with 60 45 which may be illuminated by a lamp 48, as
illustrated. This portion of the device will pref
selected words of messages. Finally, in accord
erably be placed so that a student sitting in front
ance with the illustration, the switch 23-24 may
of it can view the window which,v if desired, may
be called the semaphore switch since, as will be
be provided with a magnifying lens, not shown,
explained, it is used with the semaphore portion
of the apparatus, and employs a special tape hav 65 or the picture may be projected upon a screen
forv enlarging purposes, when desirable.
ing only the lower row of control perforations,
The operation of this system will now be set
although it can employ any of the other tape's
forth in detail. With the drive roller 2 in op
used in the machine, in which case only the con
eration the tape I will move from left to right
also be explained. If a particular machine is in 70 at a constant speed. For beginning studentsthe
tape will have its perforations well spaced, but
tended for use with ?ve different tapes there will
for more advanced students they will be spaced
be iive control switches operated by the shaft [8,
more closely together. For all classes of students
and for further example, if it is designed to use
trol row of perforations will be employed, as will _
it is important to note that the tape will move
Thus, as will be explained, these switches will be 76 at the same constant speed. The perforations in
ten tapes there will be ten of these switches.
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the tape can therefore always be of thefsame
length and spacing for any letter, ?gure or sym
bol but the spacing between them will depend
upon the-pro?ciency of the student being rated,
i. e. the faster the translating ability of the stu
dent the closer will be the spacing between-the
perforations for each letter, ?gure and‘ symbol.
shaft I8, so that switch blade 20 will have moved
to the next contact. Thus if switch 30 is closed
after this movement of switch 20, the student
cannot complete a circuit to magnet .35 and
hence the counter 39 is not operated. These op
erations continue as the test progresses, and it
will be seen that everytime a control perforation
reaches contact 6’ the counter I6 will accumulate
one» more digit, so that at 5the end of the test it
willindicate the total number of charactersv for
which the student was tested.‘ On {the other
hand, the counter 39 will have accumulated a
The interposed control perforations comprising
the lower row will be similarly varied iii-spacing
to meet the various speed requirements.
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7'
With the tape in motion with respect 'to any
letter or character the corresponding control per
foration will ?rst reach the switch 6' permitting
number‘representing all-of the correct responses 7
it to engage the contact table to complete a cir
cuit from ground at 5 through the table 4, con- -'
tact 6’ and magnet I I back to the current source.
Switches I3 and I4 will close, the former com
pleting a circuit from ground to I 2 through switch
I3, to magnet Ill’ and back to the current source,
causing the counter I6 to operate an indicator 20
showing one actuation. Switch I4 upon closing
of the student. Thus the two counters give a di
rect ratio of the accuracy of the‘student’s re
sponses during the test.
The operation of the system employing a tape
completes a circuit from ground at I2 through
switch I4 and magnet I5’ ‘back to the current
source to operate the ratchet wheel I‘! by means
perforations instead of being indiscriminate will
be arranged in accordance with the words,
sentences and messages comprising the test.
Thus if a tape is‘ employed having. perforations
representative of the word “Japan” it will be
of the pawl I6’ so that shaft I8 is moved'one .
step in a clockwise direction. Switch arm 20 will
move from this zero position as indicated to the
next contact, and likewise switch arms 22 and 24
having signal perforations representative of
words, complete sentences or complete mes
sages, will be the same. It is noted, however,
that the tape will be different in that the code
seen that switch 2I—22 will be ‘successively op
erated to establish circuits to the control board
29- corresponding. to the letters of the word
will move one step in a clockwise direction.
Switch 28 will have been moved previously to 30 “Japan” ‘and the student, if pro?cient, can oper
complete a circuit from ground through it to wire
ate the switches of the control board in the
25, so that switch arm 20 prepares a circuit at
proper sequence. The indications‘ of the two
contact A to switch 36. Since the tape I is the
counters will however be the same as that pre
character tape, switch 28 must be positioned to
viously described. Of course, in using the num
include the character switch I9—20 in circuit.
ber switch ‘El-22‘, switch 28 will be in the posi
All these operations have occurred without any
tion to engage the contact to which wire 26 is
effect on the student. However, when the ‘trail
connected.
ing code signal, that is the letter A in this case
If a semaphore test is to be made switch 28
represented by perforations in the tape, reaches
will be connected to wire 2‘I-and the contacts
the contact 6, a circuit will be completed from 40 on the support 23 will be respectively wired to
ground at 5 through table 4, contact 6, switch
the switches of the control board 29 so as to
‘I, and headphones 8 back to its energizing source.
correspond to the sequence of semaphore images
This is on the assumption that the student is to
on the ?lm 44.‘ In this case the tape I need only
get his test on the basis of sound corresponding,
be a control tape and hence will only have the
for example, to a continuous wave signal. If his 45 lower row of particular perforations. Of course,
test is to be on a visual basis, switch ‘I will be in
any of the available tapes I can be used, corre
a position to place the blinker light 9 in circuit,
sponding to the speed pro?ciency of the student.
and if his test is to be on the basis of the usual
In this case switch 40 will be closed and ‘the ?lm
telegraph instrument, switch 1 will be moved to
place it in circuit.
'
44 will be threaded around the guide wheels 43
50 and 41 and positioned so that'the ?rst image is
When the student hears the dot and dash sig
just to the right of the window 45. When the
nal in his earphones, it is his duty under the test
?rst control perforation reaches contact ?nger
to determine what letter that signal represents,
6' a circuit will be completed from ground at 5
and to operate the character switch of the con
through the table 4,» contact 6', switch 40, mag
trol ‘board 29 within the predetermined period of 55 net 4I and back to the current source. The pawl
time which it takes the tape to move from the
and ratchet 42 will then operate the guide and
A perforations to the next control perforation.
feed wheel 43, one step to pull the ?rst image
If the student correctly recognizes this signal
of the ?lm 44 into the window 45 where it will
within the allotted time period, he strikes the A
be illuminated by the energized lamp 4E. The
key of the control board. closing switch 36 so 60 student translates the semaphore signal into his
that the circuit previously prepared up to that
understanding of what letter, number or char
switch is completed by the wire 34 and magnet
acter the semaphore signal represents, and he
35 back to the current source. This closes switch
then presses the ‘proper switch in the control
36, energizing magnet 31 and operating the
board 29.
If we assume that the ?rst sema
counter 39 through the pawl 38. Upon exami
phore signal is for the letter A, and that the
nation of the circuits controlled by the other
?rst contact of switch 23-—2'4 is, as it must be,
switches in the control board it will be seen that
wired to switch 30, the student will upon closing
if he strikes the wrong key no circuit to the mag
the switch, if he does so before the next control
net 35 will be completed. On the other hand, if
perforation'arrives at contact 6’, operate coun
he strikes the right key but does not do so until 70 ter 39 as'before. If he’ strikes the wrong key
after the next control perforation has reached
or strikes it too late no record will be made on
‘the contact t’, magnet 35 will likewise not be
the counter 39. Of course, at the time magnet
operated. This is true because when the next
M1 vwas energized counter I6 was operated as
before. ‘As ‘each control Lperforation arrives at
control perforation reaches the contact 6’ mag
net I5’ will be energized as before to‘operate 75 the contact 6"‘, switch blade» 24~will advance step
2,401,462
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by step to succeeding contacts which will, as
responding signal perforations, as for example
stated, be wired to correspond to the particular
?lm 44 being displayed so that the test, as ex
blinker light is correspondingly operated and the
plained, can be made. It will be understood
that the ?lm 44 is advanced step by step a dis
those for the letter A, reach the contact 6, the
student then has until the next control perfora~
tion reaches the contact 6’ to operate the proper
key. If heoperates the proper key, that is the
tance which each time represents one image
A key in_v this case, he will complete a circuit from
area or ?lm frame. It is, of course, apparent
the current source through magnet 35, switch
that the semaphore signals may be arranged in
30, switch blade 20, wire 25, switch 28 and mag
words, sentences and the like, and with addi
tional switches like the switch 23-24 properly 10 net 65 to ground. The energization of magnet 35
will close switch .36 to operate magnet 31, and
wired to the control board the student can be
hence the counter through the pawl 38. The en
tested for these messages.
.
.
ergization of magnet'65 will release the latch
A. slightly different principle of operation has
62 so that switch 63 opens. On the other hand,
‘ been illustrated in Figure 2 as applied to the
tape I, which can be equally well applied to the 15 if the student actuates the wrong key or operates
the right key too late, the counter 39 will not be
semaphore type of testing apparatus. Here, as
actuated and latch 62 will not be released, so that
before, the tape I is illustrated as comprising a
switch 63 remains closed. Therefore, when the
lesson of indiscriminate letters, numerals and
next control perforation reaches contact 6' mag
characters, but it could equally well be perfo
rated for words, sentences and thelike. In this 20 net II will be actuated. This will cause switch
l3 to close and since switch 63 is already closed,
case the contact 6 is shown operating a relay 9!!
slow acting magnet 66 will have time enough to
for in turn operating the blinker light ,9, but,
operate before the circuit is broken at contact
of course, other signaling devices could be used
6?, so that magnet 67 is energized and counter
as previously explained, as for example a loud
speaker or a sounder. The contact 6’> as be— 25 69 is operated through the pawl 68. This counter
vwill therefore register the mistake which the
fore is connected to the magnet II which oper
student previously made, i. e. a mistake for a
ates the grounded switch blades l3 and I4.
particular signal is not registered until the fol
Switch blade l3 controls a circuit for the elec
lowing control perforation reaches thewcontact
tromagnet 6| which is part of a relay including
the switch 63. The magnet 6| also operates a .30 6’. Thus, at the end of the test this system will
provide a total of correct responses on the counter
latching arrangement 62, or in other words, this
39 and a total of incorrect responses on the
device is a latching relay which stays operated
counter 69, providing a percentage ratio of ac
until released. One lead of slow acting relay
curacy of the student. Of course, the sum of the
66 is grounded and its circuit is completed to
the current source through switch 63 when closed. 35 totals of the two counters will give the instructor
the total number of characters or signals upon
Relay 66 controls the circuit for an electromag
which the student has been tested.
net 6'! which operates a counter 69 by means of
Upon consideration it will be seen that the
the pawl 68. This counter is of the same type
switches on shaft l8 can be multiplied as before
as those .previously described. Switch l4 con
trols a circuit for magnet I5’ as before, which 40 for additional tapes, and that the semaphore ar
rangement can be included, if desired. The tapes
operates the shaft I8 through the ratchet I‘!
will be driven at a constant speed, as before, pre
and the pawl l6’. Shaft l8, as before, will be
pared for various speeds of signal reproduction,
depending upon the pro?ciency of the student.
machine is adapted. Only the switch l9—20 45 Indeed, the arrangement of Figure 2 only differs
from that of Figure 1 in providing a different cir
has been illustrated for the sake of simplicity.
cuit arrangement, and in giving a direct record
Assuming that the tape I is like that of Figure
of actual mistakes as distinguished from an indi
1, it will be seen that switch l9-—20 is wired
rect record as produced by the system of Figure 1.
through the control board 29 as before, and con
It was not intended to indicate by a statement
trols a relay 35—36 which in turn operates the 50
made earlier in this disclosure that for a ma
electromagnetic operator 31-38 to operate the
chine employing say ?ve switches Ill-20, only
counter 39. Relay 35 is preferably slow to drop
?ve tests could be given, because for a particular
off so the counter 39 has time to operate.
switch and its wiring it is apparent that a num
Counter 39 is like those ‘previously described.
In this arrangement the contact arm 20 is con 55 ber of tapes providing different tests could be
used for that switch. These tapes not only have
nected by wire 25 to the switch 28 as before, but
provided with a number of switches, depending
upon the scope of lessons or tests for which the
the same code symbols in the same sequence, but
could be varied so that a range of speed tests
could be made. Thus, as a matter of fact, with
tem will be given. The tape 1 will be driven as 60 any particular set of switches a corresponding
number of tests or any desired number of mu]
before, and when the ?rst control perforation
tiples thereof could be made.
reaches the contact 6' a circuit will be completed
The system illustrated in Figure 3 may pos
from ground at 5 through the table 4, and con
in this case this switch in turn is connected to
the unlatching magnet 65 of the latching relay.
A brief description of the operation of this sys
sibly be considered to be the most practical and
tact 6’ to magnet ll, Switches 13 and 14 will be
closed. The closing of switch M will move shaft 65 useful because it employs a tape which does not
have a separate row of control perforations, but
I8 from its zero position in a clockwise direction
rather is dependent in its operation upon the
to the ?rst or A contact as illustrated. The clos
code perforations which also act to control the
ing of switch l3 will complete a circuit to the mag
apparatus. The system illustrated in Figure 3 in
net 6l to cause switch 63 to close and the latch
62 to latch up and hold it closed. Although the .70 cludes a semaphore element as well as the other
elements, but it will be apparent that the feature
closing of switch 13 also completed a circuit to
of this invention, as in the other forms of the
relay 66 through switch63, the former being slow
invention, may be applied to either alone. The
acting, the circuit controlled by it was not com
pleted before switch [3 opened. .Thus the counter
main structural difference in the system of, Figure
69 is. not operated at this time. When the cor .75 3 over that ofthe other systems resulting from
2,401,462
the use of a single row of perforations is found
perforations.
in the manner‘of operating the relay l I. In this
arrangement, as distinguished from that of Fig
an extra contact which controls a relay 80, con
trolling. in turn the electric-magnetic operator 4|
for the semaphore feed. There is also the minor
preparing said registering device for operation,
change that instead of connecting the .loud
speaker 8 directly to the switch ‘I it is controlled
by a relay 8! connected thereto. One terminal
means manually actuated asan interpretive ex
pression of said signals for operating said pre
pared registering device, and means controlled
by said reproducing means for rendering said
manual means ineffective a predetermined period
of time vafter the reproduction of each signal.
of the relay 8!, the blinker light ,9, the sounder
l0, relay 80 and relay II have a common con
nection, as shown. The other terminals of the
loud speaker 8, blinker light 9 and sounder iii
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4. In a system for determining the accuracy of
code signal interpretation, the combination com~
prising means for reproducing code signals in a
predetermined sequence, a, registering device,
means controlled by said reproducing means for
ure 1 for example, the switch ‘I is providedwith
are connected to contacts in the switch 1, as be
10
a row of signal perforations and a row of control
16
fore. The other terminal of relay 3!! is connect
ed to an ‘additional contact in this switch, as
shown. The other portions of the circuit are the
same as disclosed in Figure 2, and the only other
points to be noted are that relay H is preferably 20
.5. In thev combination of claim 4, said repro
ducing means including a perforated tape.
6. In the combination of claim 4i, said repro
ducing means including a perforated tape having
a row of signal perforations and a row of control
perforations.
_
.
7. In a system for determining the accuracy
of a type which is sloW to drop off, relay 35 is
of code signal interpretation, the combination
slow to drop off or release, and relay 66 is pref
comprising means for reproducing code signals in
erably very slow to respond. The most impor
a predetermined sequence, a registering device,
tant relay in this respect is relay I I.
a plurality ofmeans individually operable as an
In the operation of the system it is ?rst to be 25 interpretive expression of said signals for oper
noted that the type of signal to be reproduced is
ating said registering device, and means con
determined by the position of the blade of switch
trolled by said reproducing means for sequentially
-'I, as will be apparent from the ?gure. However,
preparing said plurality of a manually operable
regardless‘ of the positionin which the switch
means for operationof said registering device
blade‘is, :relay III will ‘be operated each time a
whereby only the manually operable means cor
signal perforation: reaches switch 5, at ‘which
responding to a particular reproduced signal will
time, of course, the particular type of signal de
operate said reproducing device.
vice connected by the-switch ‘i will be simultane
8. In the combination of claim 7, said repro
ously operated. To put it another Way, at each
ducing means including a perforated tape.
time that one of the signal devices is operated, 3.5 »9. In the combination of claim '7, said repro
depending upon the position of switch 1, relay I i
ducing means including a perforated tape having
will also be operated. Thus the signal perfora
va row of signal perforations and a row of control
tions in this system also actuate the relay H as
perforations.
,
distinguished from the other systems where a
10. In a system for determining’the accuracy
separate row of control holes is employed. The .40 of code signal interpretation, the combination
relay H is preferably slow to drop off, so, that it
comprising means for reproducing .code signals
,will notlbe caused to. chatter asthe successive
in, a predetermined sequence,_ a registering de
perforations of a control signal pass the contact
vice, a plurality of. means individually operable
?nger 6. The system otherwise operates as be
as an interpretive expression of said signals for
fore and it is not believed that it is necessary.
operating said registering. device, means con
to go through it again in detail. It is to be noted
trolled by said reproducing'means for~ sequen
that the principle of this form of the invention
tially preparingsaid plurality of manually oper
may be equally well applied to the system of ‘Fig
able means for operation of said registering device
ure 1, wherein the contact ?nger 6’ will be elimi
whereby only the manually operable means cor
nated and the relay I I connected to spring ?nger 50 responding to a particular reproduced signal will
6, in which case the signal perforations will also
operate said reproducing device, and means for
control the relay.
rendering said manually operable means ineffec
From the above description it will be apparent
tive to operate said registering device a prede
to those skilled in the art that the principles and
55 termined period of time after the reproduction of
subject matter of this invention can be embodied
in a number of different physical forms. I do
not, therefore, desire to be limited to the embodi
each signal.
11. In the combination of claim 10, said repro
ducing means including a perforated tape.
12. In the combination of claim 10, said repro
ment herein disclosed in an illustrative sense, but
rather by the scope of the claims granted me.
ducing means including a perforated tape having
60
What is claimed is:
a row of signal perforations and a row of con
1. In a system for determining the accuracy of
trol perforations.
code signal interpretation, the combination com~
13. In a system for determining the accuracy
prising means for reproducing code signals in a
of code signal interpretation, the combination
predetermined sequence, a counting device, means
controlled by said reproducing means for pre 65 comprising means for reproducing code signals in
a predetermined sequence, a registering device,
paring said counting device for operation, means
manually actuated as an interpretative expres
a plurality of means individually operable as an
interpretive expression of said signals for oper
sion of said signals for operating said prepared
ating said registering device, means controlled by
counting device, and means for rendering said
manual means ineffective a predetermined period 70 said reproducing means for sequentially prepar
ing said plurality of manually operable means for
of time after the reproduction of each signal.
operation of said registering device whereby only
2. In the combination of claim 1, said repro
the manually operable means corresponding to a
ducing means including a perforated tape.
particular reproduced signal will operate said re
3. In the combination of claim 1, said repro
ducing means including a perforated tape having 75 producing device, and means also controlled by
‘2,401,462
11
12
said reproducing means for rendering said man
ually operable means ine?ective tooperate said
operable means for operating said second regis
registering device 'a predetermined period of time
reproduced signals.
after the reproduction of each signal.
20. In the combination of claim 19, said repro
ducing means including a perforated tape.
21. In the combination of claim 19, said repro
tering device upon each misinterpretation of the
_
14. In the combination of claim 13, said repro
ducing means includinga perforated tape.
15. In the combination of claim 13, said repro
ducing means including a perforated tape having
ducing means including a perforated tape having
a row of signal perforations and a row of control
a row of signal perforations and a row of control
perforations.
'
V
v
>
‘
, 16. In a system for determining the‘ accuracy
of code signal interpretation, the‘ combination
perforations.
10
22. ‘In the combination of claim 1, a second reg
istering device, and means controlled by said
signal reproducing means for actuating the regis
tering device once for each signal reproduced.
in a predetermined sequence,’ a registering de
23. In the combination of claim 4, a second
vice, means controlled by said reproducing means 15 registering device, and means controlled by said
for preparing said registering device for oper
signal reproducing means for actuating the reg
ation,vmeans manually actuated as an independ
istering device once for each signal reproduced.
ent expression of said signals for operating said
24. In the combination of claim 7, a second
prepared registering device, means for render
registering device, and means controlled by said
ing said manual means ineifective a predeter 20 signal reproducing means for actuating the reg
mined period of time after the reproduction of
istering device once for each signal reproduced.
each signal, a second registering device, and
25. In the‘combination of claim 10, a second
means controlled by said reproducing ‘means and
registering device, and means controlled by said
said manual means for operating said second reg
signal reproducing means for actuating the reg
istering device in ‘the event that an actuated 25 istering device once for each signal reproduced.
manual means does not correctly interpret the
26. In the combination of claim 13, a second
signal.
'
registering device, and means controlled by said
17. In the combination of claim 16, said repro
signal reproducing means for actuating the reg
ducing means including a perforated tape.
istering device once for each signal reproduced.
18. In the combination of claim 16, said repro 30 27. In a system for determining the accuracy
ducing means including a perforated tape having
of code signal interpretation, the combination in
comprising means for reproducing code signals
a row of signal perforations and a row of control
cluding a registering device, means for prepar
ing said registering device for operation, means
for reproducing code signals in predetermined
of code signal interpretation, the combination 35 sequencepsaid last means actuating the means
comprising ‘means for reproducing code signals
for operating the registering device, means man
in a predetermined sequence, a registering device,
ually actuated as an interpretive expression of
a plurality of meansindividually operable as an
said signals for operating said prepared register
interpretive expression _of said signals for oper
ing device, and means for rendering said manual
atingsaid registering) device, means controlled 40 means
ineffective a predetermined period of time
perforations.
_
,
19. In a system for determining the accuracy
by?saidreproducing means for sequentially pre
paring. said plurality of manually operable means
'for operationof said registering 'device'vwhereby
,onlythe manually operable means corresponding
to a particular reproduced signal will operate said
reproducing device, a second registering device,
and, means controlled conjointly by said repro
ducing means and said plurality of manually
after the reproduction of each signal.
‘
28. In the combination of claim 27, said means
for reproducing code signals including a per
forated tape.
29. In the combination of claim 2'7, said means
for reproducing code signals including a ‘per
forated tape having code signal perforations only.
HENRY P. CLAUSEN.