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Патент USA US2129948

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Sept. 13, 1938.
w. s. LEMMON
2,129,943
PRINTING TELEGRAPH CONTROL MECHANISM
Original Filed 001:. 2. 1934
W
BY
.;N V TOR.
. Z
A TTORNEYS.
2,129,948
Patented Sept. 13, 1938
UNITED STATES PATENT OFFICE
2,129,948
PRINTING TELEGRAPH CONTROL MECH
ANISM
Walter S. Lemmon, New York. N. Y., asslgnor to
International Business Machines Corporation,
New York, N. Y., a corporation of New York
Application October 2, 1934, Serial No. 746,489
Renewed December 1, 1937
13 Claims.
This invention relates to printing telegraph
control mechanism and is particularly adapted
to control the receiver units in a distinctive man
ner upon the reception of successive electrical
impulses. the characteristics of which are the
same. More particularly the invention relates
to key control mechanism comprising a double
step relay, and an object of which is to provide
means to be actuated by successive electrical im
0
10 pulses, having similar characteristics, the first of
which causes an electrical control switch to be
operated which remains in said. operative posi
tion, and the second of said impulses causes the
electrical switch to return to its normal inopera
p
G
'
tive position.
This feature when particularly applied to the
case shift mechanism is extremely useful and
important in that separate shifting and unshift
20
ing control mechanisms are eliminated.
Various other objects and advantages of my
invention will be obvious from the following par
ticular description of one form of mechanism em~
bodying the invention or from an inspection of
the accompanying drawing, and the invention
25 also constitutes certain new and novel features
of the construction and combination of parts
hereinafter set forth and claimed.
In the drawing:
Fig. l is a fragmentary sectional elevation i]
30 lustrating a portion of the recording unit.
Fig. 2 is a schematic circuit diagram.
Fig. 3 is a side view of the double step relay.
Fig. 4 is an elevational view of the relay.
The invention can be embodied in a consider
' able variety of constructions, and of these one
has been selected for specific description and il
lustration herein the one which at the present
time is believed to exhibit the invention in its
most convenient and effective form.
The con
40 struction referred to is one form of-rpower driven
recording units particularly adaptable to print
ing telegraph systems and described in my co
pending application Serial No. 677,018 filed June
22, 1933.
Referring now to the drawing in which sim
ilar parts are designated by the same numerals
in the several views, it is believed that a clear un
derstanding of the invention will be had there
from when considered In conjunction with the
following description.
For the sake of clarifying the following de
scription, the operation of the recording unit will
be given first, followed by a description of the
operation and of the parts of the double step
(01. 178-23)
relay necessary for a full understanding of this
invention.
Recording mechanism
As mentioned before for illustrative purposes, 5
this invention is shown as embodying a power
driven typewriter of the type disclosed in the
aforesaid application, the construction of which
is well known to those in the art, and hence re
quires only the following brief description.
10
Referring now to Fig. 1, in the embodiment il
lustrated in the drawing, well known means are
provided for actuating the type bars and case
shift mechanism by power operated devices com
prising a power driven roller I0.
15
A cam II is pivoted on one arm of a bell crank
lever l2 pivoted in the frame, the other arm of
which is operatively connected with one arm of
a bell crank lever I3 by means of link II. The
other arm of lever I3 is connected to the type 50
bars (not shown) in a well known manner and
fully disclosed in the aforesaid application.
The lever I2 is actuated by the cam H when
the latter engages the driven roller III to be op
erated thereby. The engagement of the cam ll $5
with the power roller is controlled automatically
by means of the solenoid l8 connected to the key
bar ll by link ID. The cam II is resiliently en
gaged by a spring—pressed ‘arm 20 which tends
to turn it into engagement with the power driv- 30
on roller or a. stop 2i on a lever 22 pivoted ‘on the
bell crank l2 and normally arranged in the path
of 9. lug 23 on the cam. When the lever 22
swings to move its step out of the path of the
lug, the arm 20 swings the cam into engagement as
with the power roller to be actuated thereby to
swing the bell crank l2 to actuate its connected
mechanism. The lever 22 has an arm 2| which
is provided with an o?set projection 25 at its
end which projects laterally through an opening 40
in the bell crank l2 and engages the bifurcated
lower end 26 of an arm 21 of a key lever l‘l
pivoted on the common rod 28 and linked to the
solenoid l8. It is obvious then that energization
of solenoid IS in causing a key lever ll to be 45
depressed releases the revolubly mounted cam I l
to engage and be actuated by power roller III in
turn operating bell crank i2 and its attached links
to cause the associated mechanism such as the key
60
bars or case shift mechanism to be operated.
One of the links it connected to a bell crank
I2 is associated with the case shifting mechanism
(not shown) well known in the art and a dis
closure of which is given in U. S. Patent 1,945,097
issued to R. G. Thompson, et 9.1., January 30, 1934, 55,
2
2,129,948
‘so that further description is not necessary since
the case shifting mechanism itself is not claimed
as part of this invention. It is understood that
the case shift mechanism remains in its operated
position so long as the controlling key bar I‘!
is depressed which is the common practice.
Double step relay
Referring now to Figs. 3 and 4 illustrating one
form of a double-step relay the function of which
is to control the key lever mechanism for ex
ample, the case shift lever mechanism so that
it remains in its operative position upon the re
ception of a particular impulse and to be ren~
15 dered inoperative upon the receipt of a second
impulse having the same characteristics.
The relay comprises a. magnet 30 which, upon
energization, will rock its armature 3| to which
is attached an extension arm 32 and pivotally
20 mounted at 33. Arm 32 also carries at its free
end a pawl 34 which is pivoted thereto and
pressed by a spring 35 into engagement with a
ratchet 33 having 20 teeth. A leaf spring mem
ber 31 fastened to the frame 38 serves as a detent
25 to hold ratchet 36 in position. Rocking of ar
, mature 3| will cause the arm 32 to be moved to
the right as viewed in Fig. 3, which upon de
energization, is urged by spring 39 attached to
arm 32 and member 40 to advance ratchet 38 one
30 tooth.
Member 40 is rigidly ?xed to an extension 4|
of frame 38. Ratchet 36 is mounted upon a rod
42 mounted on frame 38 and which also carries
a slotted cam 43 having half the number of slots
35 as teeth in the said ratchet. Cooperating with
the cam 43 are contacts 44 adapted to be closed
when the high surfaces of cam 43 are engaged.
Since ratchet 36 has 20 teeth and cam 43 has 10
high surfaces, it is obvious that a single operation
of magnet 30 will close contacts 44 and a second
energization of the magnet will permit them to
resume the position they occupy in Fig. 3. The
function of contacts 44 will be fully explained in
connection with the circuit diagram.
Operation
Referring to Fig. 2, magnet 33 is shown as
adapted to be connected to. a printing'telegraph
line or radio network suitable to receive single
50 characteristic impulses. Upon the receipt of the
?rst impulse contacts 44 are adapted to be closed
as fully explained above to cause the circuit 45
to energize the solenoid l3 connected to key
lever I1.
Closure of contacts 44 causes the con
55 denser 45 to discharge through the windings of
solenoid It! to overcome initial inertia of solenoid
i3 and during the remaining period of energizing
the said solenoid preventing a short circuit of the
current mains 41. Energization of solenoid I8
in the manner just described causes a key lever
IT to be depressed to release the cam H and then
actuated by power roller Ill to rotate the cam a
half revolution which causes the bell crank le
ver l2 to operate its connected mechanism, pref
65 erably the case shift mechanism through the
connecting link I6.
,
The case shift mechanism will remain in this
operated position during the period solenoid l8
remains energized. Upon reception of the second
70 impulse contacts 44 are caused to be opened to
break the local circuit 45 to deenerglze solenoid
I8 releasing its connected key lever H to restore
the case shift mechanism to its original position.
While there has been shown and described and
76 pointed out the fundamental novel features of
the invention as applied to a single modi?cation,
it will be understood that various omissions and
substitutions and changes in the form and de
tails of the device illustrated and in its operation
may be made by those skilled in the art without
departing from the spirit of the invention. It is
the intention therefore to be limited only as in
dicated by the scope of the following claims.
What is claimed is:
'1. In a printing telegraph recording unit, op 10
erating instrumentalities, power operated devices
individual to said instrumentalities, a plurality
of keys each adapted to cause actuation of one
of the power operated devices, means for operat
ing said keys, and means to control said key op 15
erating means, said control means adapted to
function in a different manner upon successive
operations thereof.
2. A printing telegraph recording unit com‘
prising case shift instrumentalitles, power op
erated devices individual to said instrumen
talities, a key adapted to cause actuation of said
power operated device, control means for op
erating said case shift key, and means to op
erate the said key alternately automatically up
on successive operations of the said control
means.
3. In a. printing telegraph recording unit, the
combination of a case shift mechanism, a power
driven roller, a cam movable into operative en 30
gagement with said roller for actuating said case
shift mechanism, a movable key lever for control
ling the engagement of said cam with the power
driven roller, electromagnetic means for operat
ing said case shift key lever, and means compris 35
ing an electromagnetically controlled switch to
operate the said key alternately upon successive
operations of the last named means.
4. In a remotely controlled recording mecha
nism, the combination of an operating instru
mentality, a power operated device individual to
said instrumentality, a key lever adapted to cause
actuation of said power operated device, means
for operating said key lever, a circuit adapted to
be energized by successive impulses, and means
included in said circuit to control the operation
of said key lever whereby the associated power
operated device is controlled in a different man
ner upon successive energization of said circuit.
5. In a remotely controlled recording mecha
nism, the combination of an operating instru
mentality, a power operated device individual to
said instrumentality, a key lever adapted to cause
actuation of said power operated device, means
for operating said key lever, a circuit adapted
to be energized by successive impulses having
40
45
50
55
the same characteristics, and means included in
said circuit comprising electromagnetic means
to control the operation of said key lever where
by the associated power operated device is con 60
trolled in a different manner upon successive
cnergization of said circuit.
6. In a remotely controlled recording mecha
nisrn. the combination of an operating instru
mentality, a power operated device individual to
said instrumentality, a key lever "ncluding con
trolling means adapted to cause actuation of
said power operated device. 'a circuit adapted to
be energized by successive impulses, and means
included in said circuit comprising a double
step relay to control the operation of said key
lever whereby the associated power operated dc
vice is controlled in a different manner upon sum
cessive energization of said circuit.
7. In a remotely controlled recording mucl1u~ 75
3
9,199,948
nism, the combination of an operating instru
mentality, a power operated device individual
whereby the associated power operated device is
to said instrumentality, a key lever including con
trolling means adapted to cause actuation 0!
said power operated device, a circuit including
means adapted to be energized by successive im
pulsm, means adapted to be actuated in a de?nite
manner by said impulses, means associated with
last named means to cause said key lever con
trolling means and operating instrumentality to
become operative upon energization of said
cessive energiaation oi the said means included
in the circuit.
10. In a remotely controlled recording mecha
nlam, the combination oi an operating instru
means included in the circuit, and means to
cause said key lever controlling means and
operating instrumentality to become inoperative
15 upon the successive energization of said means
included in the circuit.
8. In a remotely controlled recording mecha
nism, the combination of an operating instru
mentality, a power operated device individual to
said instrumentality, a key lever including con
trolling means adapted to cause actuation of
controlled in a di?'erent manner upon the suc
mentality, a key lever including controlling
means adapted to cause operation of said instru
mentality, and means adapted to operate the key
lever controlling means including means rendered 10
operative and inoperative upon successive opera
tion of the second mentioned means.
11. In a remotely controlled recording mecha
nism, the combination of an operating instru
mentality, a key lever and control means there
for adapted to cause operation of said instru
mentality, and electromagnetic means adapted
to control the operation of the key lever, includ
ing means connected at all times to said control
means, whereby the said instrumentaiity is con 20
trolled in a diil'erent manner upon successive
said power operated device, a circuit‘ including
energization, at all times, of said electromagnetic
means adapted to be energized by successive
impulses, means adapted to be operated in a
similar distinctive manner by each of said im
pulses, means controlled by the last named
means.
means to cause said controlling means and
operating instrumentality to become operative
and inoperative respectively upon successive
energimtlon of said means included in the said
circuit.
9. In a remotely controlled recording mecha
nism, the combination of an operating instru
mentality, a key lever including controlling means
adapted to cause operation of said instrumen
tality, a circuit including means adapted to be
energized by successive impulses at all times,
operating means controlled by the energization
of the
means
means
means
12. In a remotely controlled mechanism, the
combination of an operating instrumentality, a 25
lever to actuate said instrumentality, electro
magnetic means cooperating with said lever to
operate the lever upon its energization and de
energization respectively, and operable means
to control the energization of the said electro 30
magnetic means upon successive operation of
the said operable means.
13. In a remotely controlled mechanism, the
combination of an operating instrumentality,
a lever to actuate said instrumentality. electro 85
magnetic means cooperatlng with said lever to
operate the lever upon its energization, and a
relay adapted to control the energization and
said means included in the circuit, and
connected at all times to said controlling
deenergization respectively of said electromag
and cooperating with the said operating
to operate the said controlling means
said relay.
netic means upon successive operation of the
WAL'I'ER S. LEMMCN.
CERTIFICATE OF GORREGTION.
Intent so. 2,129,9143.
September 15, 193i‘ .
wits-En s. Lennon.
It is hereby certified‘thaterror appears in the printed specification
or thezabove numbered patent requiring" correctionas follows: Page 3, second
column, line 1, claim‘ 9; strike out the words "associated power operated
device'l-and insertjinstead the words said instrimentalityg and that the
said Letters Patent ahduldbc readwith this correction therein that the
some may confornto the record of the case in the ‘Patent Office.
' Signed and sedléduthia 6th day of December,- A. 'D.- 1938.. ‘
Henry Van Arsdale
( sail
15
Acting Commissioner or‘ Patents.
3
9,199,948
nism, the combination of an operating instru
mentality, a power operated device individual
whereby the associated power operated device is
to said instrumentality, a key lever including con
trolling means adapted to cause actuation 0!
said power operated device, a circuit including
means adapted to be energized by successive im
pulsm, means adapted to be actuated in a de?nite
manner by said impulses, means associated with
last named means to cause said key lever con
trolling means and operating instrumentality to
become operative upon energization of said
cessive energiaation oi the said means included
in the circuit.
10. In a remotely controlled recording mecha
nlam, the combination oi an operating instru
means included in the circuit, and means to
cause said key lever controlling means and
operating instrumentality to become inoperative
15 upon the successive energization of said means
included in the circuit.
8. In a remotely controlled recording mecha
nism, the combination of an operating instru
mentality, a power operated device individual to
said instrumentality, a key lever including con
trolling means adapted to cause actuation of
controlled in a di?'erent manner upon the suc
mentality, a key lever including controlling
means adapted to cause operation of said instru
mentality, and means adapted to operate the key
lever controlling means including means rendered 10
operative and inoperative upon successive opera
tion of the second mentioned means.
11. In a remotely controlled recording mecha
nism, the combination of an operating instru
mentality, a key lever and control means there
for adapted to cause operation of said instru
mentality, and electromagnetic means adapted
to control the operation of the key lever, includ
ing means connected at all times to said control
means, whereby the said instrumentaiity is con 20
trolled in a diil'erent manner upon successive
said power operated device, a circuit‘ including
energization, at all times, of said electromagnetic
means adapted to be energized by successive
impulses, means adapted to be operated in a
similar distinctive manner by each of said im
pulses, means controlled by the last named
means.
means to cause said controlling means and
operating instrumentality to become operative
and inoperative respectively upon successive
energimtlon of said means included in the said
circuit.
9. In a remotely controlled recording mecha
nism, the combination of an operating instru
mentality, a key lever including controlling means
adapted to cause operation of said instrumen
tality, a circuit including means adapted to be
energized by successive impulses at all times,
operating means controlled by the energization
of the
means
means
means
12. In a remotely controlled mechanism, the
combination of an operating instrumentality, a 25
lever to actuate said instrumentality, electro
magnetic means cooperating with said lever to
operate the lever upon its energization and de
energization respectively, and operable means
to control the energization of the said electro 30
magnetic means upon successive operation of
the said operable means.
13. In a remotely controlled mechanism, the
combination of an operating instrumentality,
a lever to actuate said instrumentality. electro 85
magnetic means cooperatlng with said lever to
operate the lever upon its energization, and a
relay adapted to control the energization and
said means included in the circuit, and
connected at all times to said controlling
deenergization respectively of said electromag
and cooperating with the said operating
to operate the said controlling means
said relay.
netic means upon successive operation of the
WAL'I'ER S. LEMMCN.
CERTIFICATE OF GORREGTION.
Intent so. 2,129,9143.
September 15, 193i‘ .
wits-En s. Lennon.
It is hereby certified‘thaterror appears in the printed specification
or thezabove numbered patent requiring" correctionas follows: Page 3, second
column, line 1, claim‘ 9; strike out the words "associated power operated
device'l-and insertjinstead the words said instrimentalityg and that the
said Letters Patent ahduldbc readwith this correction therein that the
some may confornto the record of the case in the ‘Patent Office.
' Signed and sedléduthia 6th day of December,- A. 'D.- 1938.. ‘
Henry Van Arsdale
( sail
15
Acting Commissioner or‘ Patents.
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