Download Document 7812470

Aug; 10, 1943.
D. F. NEWMAN
2,326,386
TAPE-CONTROLLING ARRANGEMENT
_Filed Dec. 24, 1938
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INVENTOR
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Env/r1 ENEWMHN.
lATI'ORNE S
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Aug. l0, 1943.
D_ F, NEWMAN
" 2,326,386
TAPE- CONTROLLING ARRANGEMEN T
~ Filed Deb. 24, y195e
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INVENTOR
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ORNEYS
Patented Aug. l0, 1943>
2,326,386
UNITED s'r.2».TEsv PATENT OFFICE
2,326,386
TAPE-CONTROLLING ARRANGEMENT
David F. Newman, Rockville Centre, N. Y., as
signor to Trans-Lux Corporation, New York
N. Y., a corporation of Delaware
Application December 24, 1938, Serial No. 247,717
10 Claims.
My invention relates to arrangements for con
trolling a character-bearing tape or web for
movement through a projection field.
(Cl. 271-23)
known in Great Britain under the designation of
the Exchange Telegraph Company, Ltd.
The
type of printer last named prints a single row
My invention has particular reference to
of characters lengthwise on the tape T, which
a combined printing-projecting arrangement @Il may be opaquer if desired although, in the form
wherein the tapeîdrawing motor is controlled .in
of the invention herein illustrated, said tape T
a novel manner so that rotation of the motor
is of the transparent or translucent type and
armature is discontinued simultaneously with
adapted, therefore, for “through” projection.
deenergization of the motor operating circuit.
As herein shown although not necessarily, the
My invention, in a more detailed and preferred
tickenmechanism P comprises a housing l for
application thereof, relates to an arrangement
a reel (not shown), utilizable as a support for a
for discontinuing rotation of the motor arma
roll of the tape T; the housing I being carried
ture by electro-magnetic action thereon simul
taneously as the motor operating circuit is de
energized.
_
My invention, in another important phase
thereof, relates to an arrangement which, by
simple manual adjustments, adapts a tape-draw
by an arm 2 which is secured to a wall of the
ticker base 3 of said- ticker mechanism, the hous
ing last named supporting an upper housing 4,
both housings being carried by a suitable base
5. As shown, a heavy Weight 6 is suspended on
a cable 1 which leads to the operating mecha
ing motor for use either with an alternating or
nism of the printing device P and provides power
direct current source even though the voltage 20 for operating the same. The weight 6 is adapted
of such source differs substantially from the
to bel elevated, when necessary, by any suitable
voltage requirements of the motor.
Various other objects, advantages and char
acteristics of my invention will become apparent
from the following description.
My invention resides in the tape-controlling
arrangements, combinations and improvements
of the character hereinafter described and
claimed.
For an understanding of my invention and for
an' illustration of some of the forms thereof,
reference is to be had to the accompanying draw
ings, in which:
.
Figure l is an elevational view of a printer
projecting arrangement together with a diagram`
matic representation of a motor control circuit;
Fig. 2 is a plan view showing the tape-con
means.
As is well understood in the art, a printing
device or ticker mechanism of the character
herein described is remotely controlled so as to
print desired characters on the tape T which is
automatically ejected from said printing device.
After the tape T leaves the ticker mechanism
P, it is drawn through a projection device A
whereby images of the tape characters are pro
jected` onto any suitable screen. This projec
tion device A may be of any suitable character
and, by way cf example, is shown herein as
comprising a housing 9 having supported therein
a mirror l0 which receives a horizontal beam of
light from any suitable light source. The mirror
l0 is inclined at an angle of »45 degrees to a
trolled switch;
horizontal plane so that the aforesaid light
Fig. 3 is a. vertical sectional view, partly in
beam is directed upwardly thereby for passage
elevation, and is taken on the line 3-3 of Fig. 40 through a condensing lens, and then through
2 looking in the direction of the arrows;
the projection field which, as herein illustrated
Fig. 4 diagrammatically illustrates the auto
although not necessarily, is defined by an elon
transformer of Fig. l and some of its connections
gated, rectangular aperture I2a formed in the
as adapted for commercial use;
Y _
_
Fig. 5 is a schematic viewillustrating an
application of the invention; and
top plate l2 of the aforesaid housing 9.
.
The aforesaid tape T may be pulled or drawn
through the projection field |2a by an arrange
Fig. 6 is a schematic view illustrating another
ment of any suitable character. Thus, for ex
application of the invention.
ample and as herein shown, said tape T may be
Referring to the drawings, P represents a suit
passed beneath a roller I3 or other guiding sur
able printing device such, for example, as a 50 face, this roller I3 being disposed below the hori
ticker mechanism of the _type utilizable in the
zontal plane’of the projection field. Thereafter,
United States for printing two spaced rows of
the tape T passes over a pulling roller Il, the
characters lengthwise on a narrow tape T or, as
tape being held in engagement with the upper
shown, of the ltype utilizable for printingr` on a
surface of said pulling roller I4 by an idler roller
tape having a width of %", more or less, and 55 I5 mounted on a lever I6 whichls biased against
2
2,326,886
For a more detailed disclosure of the printer,
the roller I4 by a >spring I1. After the tape
passes beyond the pulling roller I4, it may be de
ñected by an idler roller I8, or other guiding
projector and tape-pulling mechanism described
generally above, reference may be had to my
pending application Serial No. 189,042, filed Feb
surface, and then passed upwardly so as to be
Wound upon a suitable reel I9.
ruary 7, 1938.
vThe aforesaid pulling roller I4 may be rotated
by any suitable means. Thus, for example, the
operating shaft I4a for said pulling roller I4 may
be geared to a countershaft I4b to which is con
nected one end of a iiexlble shaft v2i) which, at its 10
~
As stated above, the tape T is drawn through
the projection ñeld I2a. by the mechanism driven
by the motor M and, Ain accordance with the pres
ent invention, this motor M, is controlled in a
novel manner so that rotation of itsarmature is
other end, is connected to a worm wheel 2| mesh--l » discontinued instantaneously as the motor is de
. energized. With the form of the invention illus-ing with a worm gear 22 rotatable with the arma
trated in Fig. 1, the motor M is an alternating
ture shaft of a suitable electric motor M.
current motor of the series woundtype.
As shown herein, a suitable support 23 carries
the above described rollers I3, I4 and I8, the 15 For so controlling the motor M, I may provide
' reel I9 and the various associated parts. This
support 23 may be of any suitable character and
it may be mounted in any desired manner. Thus,
a device V, such as an auto-transformer from ,
which a plurality of different voltages may be
obtained, said‘auto-transformer V comprising the
line terminals 35, 36 and a desired number of
if desired,>said'support 23 may be secured either
directly or indirectly to the aforesaid housing 9.
20 intermediate terminals 31a, 31h, 31o, 31d . . . 31s,
The reel I9 may be operated in any suitable
31t by which, in the manner hereinafter de
' scribed, a desired voltage may be applied to the
manner such, forexample, as is well known in
auto-transformer V and desired different voltages
the art'. Thus, the 'motor M may furnish the
obtained therefrom for application to the termi
power for driving the reel I9, the latter, prefer
ably, being rotatable by a spring belt-24 of the 25 nals of the motor M and for other uses, respec
tively.
'
conventional endless type, such belt engaging
pulleys carried respectively, by the shaft of the
In accordance with the invention, a conductor y
38 is arranged to lead from one terminal of a suit
reel I9 and the shaft I4a of the pulling roller I4.
able vsource of alternating current, so that it may
As shown, the projection devicelA is‘spaced
from the printing device P in such manner that 30 be connected to the aforesaid terminal 35 ofthe
auto-transformer V. The other terminal of said
a section of the tape T extends between these two
source of alternating current has connected
devices and, as hereinafter described, forms a
thereto a conductor 39 which leads to and is con
tape loop having more or less length or extent.
Adapted to engage and to be controlled in posi
nected to the terminal 3111.. Connected to the
terminal 35 of the auto-transformer V is a con~tion by this tape loop is -a movable member 25
ductor 49 which leads to a terminal 40a. forming
which comprises a lateral section 25a, Fig. 2,
a fixed contact of a relay R. Coactable with
adapted directly to engage the tape T, said sec
tion 25a being cut away as indicated at 25h so
the fixed contact 40a. is a movable armature 4Ia
having connected thereto a conductor 4| leading
as to straddle the single row of characters on the
tape T and avoid smudging of the ink forming 40 to one terminal of one field winding ,f of the
motor M, this field winding f being connected in
said tape characters. In- the event that there are
two rows of characters extending longitudinally
series with the motor amature winding to which
of the tape T, the aforesaid- lateral section 25a.
the other field winding fl is connected, the lat
ter, by conductor 42, being connected to a re
may be provided with an offset section which en
gages the tape between said rows of characters. 4.5 sistance unit 43 having coactable therewith an
Suitably supported, for example, by the rear wall
adjustable contact to which is connected a con
of the aforesaid housing 9 is a laterally extend
ductor 44 leading to the aforesaid contact mem
bers 21a, 21b of the control switch. Connected
ing member 26 which forms a support on which
the member 25 is mounted for free oscillatory
to the conductor 42 is a conductor 45 which leads
movement. 'I'he member 26 also supports two 50 to and is connected to the aforesaid contact mem
other members 21, 28 both of which are freely
ber 28a of said control switch. _ 'I'he control
switch ñxed contact member- 29a has connected
oscillatory in the same manner as the member
thereto a conductor 46 which leads to and is
25. The member 21, on opposite sides thereof,
connected to the terminal 31d of the auto-trans
has secured thereto the respective contact mem
bers 21a, 21h which are associated with each other 55 former V. j
'
The aforesaid conductor 44 has connected
in electricity-conducting relation. The member
thereto a conductor 41 which leads to one termi
428, on the lower surface thereof, has secured
nal of the winding 48 of the relay R., the other
thereto a contact member 28a which is coactable
terminal of which has connected thereto a con
with the contact member 21a.. The above de
scribed contact member 21b is coactable with a 60 ductor 49 leading to the terminal 31a.
‘ contact member 29a. secured to a member 29
which is suitably mounted in fixed «position such,
'
Connected to the conductor 45 is a conductor
V5I! which leads to one terminal of a rectifier unit
U, the opposed terminal of which terminates in
for example, as by means which secures it .to
a conductor 5I leading to a fixed terminal 5Ia
the aforesaid housing 9. The member 25 com
prises a section 25o, Fig. 3, of di-electric material 65 of Ythe relay R. The other opposed terminals of'
the rectifier unit U have connected thereto the
which is disposed directly below the fixed con
respective conductors 52 and 53 which lead to
tact member 29a. so, in the event that the- mem
the respective terminals of a winding 54 induc
.ber 25 should move upwardly into engagement
tively related to the winding of the auto-trans
with the fixed contact member 29a, no electrical
circuit would be established from said fixed con 70 former V.
tact member 29a. through the member 25 which,
The armature of the aforesaid motor M has
, preferably, is formed of aluminum.
connected thereto the respective conductors 55
'I'he members 21, 28 carry the respective down
and 56, the conductor 55 leading to the movable .
wardly extending stems 39, 3l, which; prefer
ably are adjustably mounted as shown.
armature >55a of the relay R, the conductor 56
75 leading to the ñxed contact 56a 'of said relay R.
2,326,386
_In operation, the printing device P, the pro
3
series, conductor 42, conductor 45, control switch
contacts 28a, 21a, 2lb and 29a„conductor 46 and
jection device A and the tape-pulling mechanism
are suitably disposed as indicated in Fig. 1' so> as
to form a straight-line path for the tape T which
issues from said printing device in flatwise rela
tion and, while maintained in the same relation,
is drawn through the projection field of said pro
jection device A and then wound upon the reel
thence to the intermediate auto-transformer ter
minal 31d. It will be noted that the resistance
unit 43 is not included in the circuit last de
as a J-spring or, as shown, a pivoted weight 51
may, if desired, be disposed at the entrance to said
thus operating because energized over one or
scribed and, therefore, the motor M operates at
relatively high speed to draw the tape T through
the projection tleld I2a.
During continued operation of the ticker
I9. In connection with the described movement
of the tape through said projection iield, it will 10 mechanism P, the motor M operates to draw the
tape through the projection field |2a, said motor
be- noted that a suitable device such, for example,
the other of the circuits described above. In
the event that the ticker mechanism P is of the
type which operates to eject the tape 'at con
stant speed, it is desirable for the motor M, when
operating at relatively slow speed, to draw the
tape at a speed less than the rate at which the
projection field, said Weight 51 engaging the sides
oi' the tape so as to prevent tape pulsations set
up by the printing device from reaching the pro
jection field.
When the control switch is positioned as shown
in Fig. 3, i. e., with the contacts 21a, 28a open
and with the contacts 21h, 29a closed; the ticker
tape is ejected by said ticker Amechanism and,
when operating at said relatively high speed, to
draw the tape at a rateA faster than the rate at
which the tape is ejected by said ticker mech~
anism. Obviously, said relatively slow speed of
operation of the motor M may be controlled with
precision by adjustment of the movable contact
mechanism P may be assumed as operating to
eject tape from left to right, Fig. 1, for passage
through the projection i-leld I2a.
Assuming that the auto-transformer- V is ener
gized by current passing thereto over the circuit
comprising the conductors 38 and 39, closure of
which coacts with the resistance unit 43. `
When operation of the ticker mechanism P is
discontinued, the motor M, for a short interval,
continues to draw the tape with consequent de
crease in length of the tape loop at the entrance
the control switch contacts 21h, 29a. causes the
Winding 48 of the relay R to be energized over a
circuit vwhich extends from the intermediate
auto-transformer terminal 31a, conductor 49,
the relay winding 4S, conductor 41, conductor 44,
contact 21h, contact 29a, conductor 46, and thence
to the intermediate terminal 31d of the auto
to the projection field. As the tape loop thus de
creases in length, the member 25 is swung, by
the shortening tape loop, _in a clockwise direc
transformer. When the relay R is energized in
tion, Fig. 3, to thereby first separate the contacts
th'e manner described, the armatures 41a, 55aJ ‘
21a and 28a, if these contacts are closed, and
then to separate the contacts 21h, 29a. When all
thereof are held in the position shown in Fig. 1,
the armature 41a at this time being in engage
ment with the fixed Contact 40a.
With the relay R thus energized and with the
auto-transformer V energized as described above, 40
the motor M is energized over a circuit which
ductor 42, resistance unit 43, conductor 44, con
tact 21h, Contact 29a, conductor 46 and thence to
the intermediate auto-transformer terminal 31d.
It will be noted that the resistance unit 43 is
included in the circuit described -immediately
above and, by reason of the effect thereof, the
motor M operates at relatively slow speed to
draw the tape T through the projection ñeld 12a.
opened and operation thereof is discontinued.
With the invention `herein shown, it becomes
practical to position the printing device P and
the projection device A in such close relation
'extends from the auto-transformer terminal 35,
by way of conductor 40, terminal 40a of the relay
R, armature 4Ia of the relay R, conductor 4|, the
field windings Í, fi of the motor M in series, con
of said contacts are separated as thus described,
the operating circuits for the motor M are
Ll
with respect to each other, Fig. 1, that the length
of the tape loop between these two devices is
relatively short at all times. Thus, in actual
practice, it has been demonstrated that the tape
loop between the printing zone of the printing
device P and the entrance to the projection field
has a length, when the tape-drawing motor M is
not operating, of approximately 3A; inch. This
may, of course, range upwardly to 1 inch, or
somewhat more, the tape loop having a length
11/2 inches to 1% inches, more or less, when said
motor M is operating. This is distinctly ad
In the event that the ticker mechanism P
ejects the tape at a faster rate than it is drawn - vantageous. With such an arrangement, the in
formation ebtained by observation of the pro
by the motor M, when energized over the circuit
jection screen is almost current at times because
last described, the tape loop at the entrance to
only a very little information printed by the
the projection field increases in length to permit
ticker mechanism can be “stored” in the tape
counter-clockwise movement, Fig. 3, of the mem
ber 25 whereby the contacts 21a and 28a of the 60 loop. It shall be understood that my inven
tion is not to be limited to the exact tape loop
control switch come into engagement. In this
lengths specified above.
_
connection it will be understood that members 25,
Therefore, by reason of the fact that the ar
21 and 28 are independently movable-within
rangement of Fig. l operates with a tape loop
limits-_with respect to each other. They are
which is relatively short at all times, particu
preferably all mounted by the support 26. Also,
larly at the time when operation of the motor
unit 29 is ñxed against movement so that it and
M is discontinued, it becomes necessary to pro
its contact 28a are movable wtih respect to these
vide an arrangement for preventing “Coasting”
members.
i
of the motor armature after the motor has been
When this happens and with the autoétrans
deenergized. This is true because if the rota
former V energized as described above. the motor
tion of the motor armature is not discontinued
M is energized over another circuit which ex
substantially instantaneously as the motor is
tends from the auto-transformer terminal 35,
deenergized, the tape will be drawn for a short
by way of conductor 40, terminal 40a of the
yinterval by reason of the armature inertia and,
relay R, armature 4Ia of the relay R, conductor
4|, the field windings f, fl of the motor M in
with a, tape loop having the short length speci-
4
2,326,386
fled above, such added movement ofthe tape,
the auto-transformer V. Further, when the
voltage of the supply source differs from the value
stated above, it will be understood that the con
ductor 39 should be connected to the proper in
termediate terminal of said auto-transformer V.
In the form of the invention disclosed in Fig. 1,
after the motor is deenergized, may well cause
the tape to be torn or drawn through the print-.
ing mechanism. This of course, would be highly
-undesirable. Therefore, in accordance with the
invention, rotation of the motor amature is dis
continued in an instantaneous manner immedi
ately upon deenergization of saidniotor.
,
Vthe winding 48 of thel relay R is energized byfcur
' rent obtained from the auto-transformer V, such
current having a Voltage of 90 volts. It shall .be
As hereinbefore pointed out, the circuit of the
relay winding 48 includes the controlswitch con 10 understood that the voltage thus applied across
the relay winding >48 may differ in a desired man
tacts 2lb, 29a and, v when these contacts are
opened as described above, the relay winding
ner from the example of the invention herein
shown for purposes of explanation.
’
4B is deenergized. When this winding is thus
deenergized, the armatures 4Ia and 55a thereof
Further, as illustrated, the rectifying -unit U
move into engagement with the respective iixed 15 obtains its operating c_urrent by inductive action
on the winding of the auto-transformer V. By
contacts 5Ia and 56a. .As one result of this op
eration, the armature winding of the motor M
the unit U, a rectiiied current is applied across
the ñeld windings of motor M and it will be un
is short-circuited over acircuit which extends
derstood that the voltage thus applied across said
from the armature 55a, conductor 55., the arma- «
turewinding, conductor- 56 and thence back to 20 ñeld windings may vary between rather wide lim
` said armature 55a by Way of the ñxed contact
56a. AAs another result of such deenergization
of the relay winding 48, the output terminals of
the rectiñer unit U are .connected across the
motor ñeld windings f and fl, this rectiñer unit
obtaining alternating current from the winding 25
its. Thus, for a motor M having an armature of
a given weight, it has been ascertained that the
voltage thus applied across the ñeld windings
may range between 12 volts and 50 volts. For
motor armatures of diiîerent weights, it will beì
understood that such range of voltages may dif
fer accordingly.
.
of the auto-transformer V over a circuit com
In the event that the motor M is a direct cur
prising the conductors 52 and 53. Thus, direct l
rent motor, it will be understood that a suitable
current is delivered by said rectifier unit U over
a circuit comprising the conductor 50, conductor 30 resistance unit comprising a plurality of tap-off
connections may be utilized in lieu of the auto
45, conductor 42, ñeld winding fl, conductor 56,
transformer V. If so, the resulting direct cur
fixed contact 56a, relay armature 55a, conductor
rent system is operative in substantially the same
55, field winding f, conductor 4I, relay armature
manner as is the described alternating current
4ta, ñxed‘contact 5ta and thence'back to the
rectifier unit by` way'of the conductor 5|.
35 system. In lieu of the foregoing, however, I pre- ,
fer to proceed as hereinafter described by adapt-`
Therefore, in the manner described, ñow of the
ing the arrangement of Fig. 1 for use with _a
energizing alternating current through the motor
source of direct current.
'
armature is discontinued and, simultaneously, a
Thus, referring to Fig. 5, the hereinbefore de- ;
flow of direct current is established through the
motor field windings f and fl, such direct cur 40 scribed input conductors 38 and 39 are shown
similarly to the arrangement illustrated in Fig.
rent being shunted around the motor armature.
The electro-magnetic effect thus produced on the > 4, as having associated therewith a socket 60 and
a plug 6 I.
y
motor armature, which at this time is rotating
Adapted to be associated with the socket 60.and
by reason of its inertia, acts as a brake to imme
plug 6I is aconnector means D comprising a plug
diately overcome such inertia and discontinue
62 and a socket 63, the plug and socket last named
the armature rotation. Accordingly, the motor
being connected by the conductors 64.
armature of my invention is controlled in such
manner that damage to the tape is prevented'
Further .in accordance with the . invention,
there is adapted to be associated with the ‘socket
even though there is a very short loop at the en
trance to the projection iield. lThe described 50, 60 and plug 6l a connector means DI comprising _
a plug 65 and a socket 66», the plug and socket
electro-magnetic effectJ on the motor armature
last named Ibeing connected by the conductors 6l.,`
maintains said armature warm during periods of
Included in the circuit comprising the conductors
non-operation thereof, i. e., while the tape r‘e
6l is a variable resistance unit 68 and a rotary
mains stationary in the projection i'leld. As a
'
result,.the motor M comes up to it normal oper 55 converter 69, or equivalent.
ating speed more quickly, especially at starting,
Still further) and asy shown in Fig. 6, there is
adapted to be associated with the socket 60 and
than would be the case if said armature were per
plug 6l a connector means D2 comprising a plug
mitted to cool.
'
An important feature of my invention resides
'lûand a socket 1|, theplug and socket last
in the fact that operation of the disclosed system 60 named being connected by the conductors' 12..
Included in the circuit of 'the conductors 12 is
is not precluded even though the voltage of the.
the aforesaid rotary converter 69, or equivalent.
supply line differs substantially from the volt
age requirements of the tape-drawing motor
In the event that alternating current is avail-'
able for use, the aforesaid connector means D is
available for use. Thus, as shown in the draw
ings, the motor M may be a standard 11o-volt 65 connected in the circuit of the conductors 38 and
39, this being accomplished by associating the
motor whereas the voltage of the supply line may
plug 62 and socket 60 on the one hand and the
be 210 volts. ' Even so, by my invention, the 110
1 p1ug sl and socket 63 on the other hand. If the
volt motor may readily be connected in the cir
cuit for operation at the proper voltage. In the
motor M is a standard 110-volt motor and if the
event that the tape-drawing motor to be utilized 7.0 voltage of the alternating current supply line is
210 volts, for example, the input connection of
requires an operating voltage diiïering from that
the auto-transformer V should .be as shown in
of the motor M, it Will be understood that the
proper voltage may be applied across the termi- `
Figs. 1 and 4. lHowever, as- will readily be un
derstood, if the voltage of the alternating current
nals of the selected motor by connecting the con
ductor 46 to the proper intermediate terminal of, 75 supply dilîers from the value stated immediately
2,326,886 1
5
vrespect to certain particular preferred examples
above, the conductor 39 should 'be' connectedito
the propery intermediate terminal of said auto->
which- give satisfactory results, it will be under
stood by `those skilled in the art after under
transformer V.
The rotary 'converter 69 iskof suchl‘character K .standing the invention, that various changes and
modifications'may be made without departing
that the alternating current output thereof has
. from the spirit and scope of theinventíon and it
a voltage magnitude corresponding either with
is intended therefore in the appended claims to
the voltage requirements of the motor M or
cover all such changes and modifications.
which may be brought into correspondence
‘ What is claimed as new and desired to be
therewith by movement of the terminal of con
secured by Letters Patent is:
ductor 39 to the proper intermediate contact of
the auto-transformer V.
1. In a system for drawing a character-bear
`
In the event that direct current and not a1
ing tape through a projection field after ejec
ternating current is available for use and if the
tion thereof from a printing mechanism, means
voltage thereof differs substantially from the
rated voltage for the direct current side of the
rotary converter 69, the connector means DI is
inserted in the line by associating the'socket 60
fol- drawing said tape through the projection
'of the rotary converter 69 is changed so as to `
tially in an instantaneous manner.
conform with _the rated voltage requirements
of the latter. It follows, therefore, that the
ing tape through a projection field after ejec
field, an electrical motor for operating said draw
ing means, means forming an energizing circuit
for said motor, means for opening said energiz
ing circuit, and means for supplying direct our»
and plug 65 on the one hand and the socket 66
rent to and affecting the motor armature elec
and plug 6I on the other hand. By proper ad
justment of the resistance unit 68, the voltage 20 tro-magnetically as said circuit is opened to
thereby discontinue rotation thereof substan
of the direct current delivered to the input side
2. In a system for drawing a character-bear
direct current of the supply lline is changed, by 25 tion thereof from a printing mechanism, means
for drawing said tape through the projection '
the rotary converter B9, to alternating current
which is supplied to the input side of the auto
transformer V and thence to the motor M.
In the event that direct current is available
for use and if the voltage thereof conforms sub 30
stantially with the rated voltage yfor the direct
current side 0f the rotary converter 69, the con
iield, an electrical motor for operating said
drawing means, means forming an energizing
circuit for said motor, means controlled by a
tape loop positioned between said printing
mechanism and said projection field for open
ing said energizing circuit, and means affecting
the motor armature electro-magnetically as said
nector means D2 is inserted in the lineby asso
circuit is'opened to thereby discontinue rotation
ciating the socket 6i) and plugy 10 on the one
hand and the socket 1l and plug 6I on the other 35 thereof substantially in an instantaneous
hand.
3. In a system for drawing a character-bear
It will be understood that the connector means
ing tape through a projection ñeld after ejec
DI and D2 are the same identical connector
tion thereof from a printing mechanism, means
are provided so that the resistance unit 68 may 40 for~ drawing 'said tape through the projection
be inserted or detached from the input circuit
field, an electrical motor for operating said
means.
Suitable detachable contact members
of the rotary converter 69 at will.
It will be understood, in all cases, thaty the ter
minal of the conductor 39 may be shifted as dem
sired to the proper intermediate terminal of
the auto-transformer V to produce the desired
.
drawing means, means forming an energizing '
circuit for said motor, means for changing the
speed of operation of said motor to thereby
cause the tape to be drawn through said projec
tion iield at different rates of speed, means con
operating voltage for the motor M..l
trolled by a tape loop positioned between said
In View of the foregoing, it follows that the
printing mechanism and said projection ñeld
apparatus comprising the auto-transformer V,
for opening said energizing circuit, and means
the rectifier U and the 'relay R of Fig. 1 may 50 affecting the motor armature electro-mag
form a permanent assembly for operating the
netically as said circuit is opened to thereby dis
alternating current motor M. With the de
continue rotation thereof substantially in an in
scribed connecting means at hand, the system is
stantaneous manner. '
flexible in the sense that it may be operated
4. In a system for drawing a character-bearing
either by alternating current or direct current 55 tape through a projection field after ejection
and, further, such system does not require the
thereof from a. printing mechanism, means for
supply source of current to be of some specific
drawing said tape through the projection ñeld,
voltage. All of this is highly advantageous par
an electrical motor for operating said drawing
ticularly when it becomes necessary tov ship the
means, means forming an energizing circuit for
tape-drawing arrangements of my invention into 60 said motor, switch contacts included in said cir
various localities having different kinds of elec
cuit, means controlled by a loop in the tape for
trical current supply.
operating said switch contacts, means controlled
It shall be distinctively understood _that my
by said energizing circuit, and means operated
invention, as regards magnetic action on the
by said controlled means for affecting the motor
motor armature to discontinue rotation thereof 65 armature electro-magnetically when the motor
immediately upon the deenergization of the
circuit is opened to thereby discontinue rotation
of the motor armature substantially in an in
motor operating circuit, is not to be limited to'
the use of an auto-transformer V, or equivalent.
stantaneous manner.
5. In a. system for drawing a character-bearing
Thus, in those cases wherein the `supply line
voltage conforms with the voltage requirements 70 tape through a' projection field after ejection
of the tape-drawing motor, it will be clearly
thereof from a printing mechanism, means for
apparent that variable voltage devices need not
drawing said tape through the projection field,
an electrical motor for operating said drawing
be used in order to obtain a suitable operating
means, means forming an energizing circuit
voltage.
While the invention has been described with 75 for said motor, switch contacts included in said
6
2,326,386
circuit, means controlled by a loop in the tape »
for operating said switch contacts, means com- „
prising a relay winding controlled by said ener
gizing circuit, and means operated by said relay
winding for affecting the motor armature electro
ous manner said relay being connected to render
said last named means operative and to also-
render said rectifying means operativeA as said
_, relay is de-energized.
8. In a system for drawing a character-bearing(
magnetically when the motor circuit is opened to
thereby discontinue rotation of the motor >arma
' thereof from a printing mechanism, an'electrical
ture substantially in‘ an instantaneous manner.
6. In a system for drawing a character-bearing
' forming an energizing circuit for said motor, _
tape through a projection iield after ejection
motor of the alternating current type, means
tape through a' projection field after` ejection' 10 means operated by the motor for drawing the
thereof from a printing mechanism, means for
tape throughthe-projection ñeld, means for ,
drawing said tape throughthe projection field,
changing the speed of operation of saiddrawing
an electrical motor for operating \said drawing
means to thereby causel the tape to be drawn
means, a relay winding, transformer means,
through the projection 4:field at diiîerent rates
means whereby electrical current of different 15 of speed, means for opening said energizing
. , voltages may be` transmitted to the input side
, " of said transformer means, means whereby elec- Y
circuit, and means for supplying direct current,
aifecting the. 'motor armature electro-magneti
l'trical current of diiïerent voltages may be trans
cally asA said energizing circuit isA opened to
mitted from said transformenmeans to said mo
thereby discontinue.rotation'thereof substantially
tor, means whereby `said relay may be energized 20 in an instantaneous manner.
by current transmitted from said transformer
means,.means for discontinuing the ñow of cur
rent to said m'otor, means for affecting the motor
armature electro-magnetically .to thereby discon
9. In a system for drawing a-,character-bearing
tape through a projection field after ejection
thereof from a printing mechanism, means for
drawing said tape 4through the projection iield,l
tinue rotation thereof substantially in an in
stantaneous manner and said relay being con
nected to said last named means to render the
an electrical' motor of the alternating current
ty'pe for operating said drawing means, means
formingA an energizing circuit for said motor,
same operative as said relay isV de-energizedf
means for opening and 'closing said energizing
7. In a system for drawing a character-bearing
' circuit, and direct current supplying, means for
tape through a projection field after ejection 30 maintaining the motor warm during periods of '
thereof from a printing mechanism, means >for - non-operation thereon
drawing said tape through the projection field,
10. In a system for drawing a character-bear- .
an electrical Vmotor for operating said' drawing
ing tape through a projection ñeld after ejection
means, a relay winding, rectifying means, trans
thereof ‘from a printing mechanism, means for
former means, means whereby electrical current 35 drawing said tape through the projection field,
of different voltages` may be transmitted to the
an _electrical motor of the alternating current
input side of said transformer means, means
type for operating said drawing means, means
whereby electrical current of'different voltages
` forming ~an energizing circuit for said motor,
may be transmitted from said transformer means
means for opening said energizing circuit, and
to said motor, means whereby said relay may be
meansfor supplying direct current, affecting the >
energized by current of different voltages trans
motor armature electro-magnetically as saidcir
' mitted from said transformer means, means vfor
cuit is- opened to thereby discontinue rotation
operating said rectifying means by current trans
thereof substantially in an instantaneous man
mitted thereto from said transformer means,
ner, said last named means serving Yto maintain
means for discontinuing the ñow 0f current to 45 the motor warm during periods of non-operation
said motor, means for aifecting the motor arma
' thereof .~
ï
.
ture- electro-magnetically to thereby discontinue
DAVID F. NEWMAN.
rotation thereof substantially in an instantane