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Jan. 14, 1947. '
c. w. DANN m;
' 2,414,140
Charles M Dam:
Richard M?omers
Jan. 14, 1947.v
' c. w. DANN- ETAL
Filed Nov. 8, 1943 ‘
2,414,140 ‘
2 Sheets—Sheet 2
' N
Izar-Zes W. .Da'rzrz
Patented Jan. 14, 1947
Charles W. Darin, Orange, and Richard M.
Scmers, West Orange, N. 1., assignors to
Thomas A. Edison, Incorporated, West Orange,
N. 3., a corporation of New Jersey
Application November 8, 1943, Serial No. 509,518
13 Claims.
Our invention relates to phonograph arrange
ments wherein two or more phonographs arerin
tercoupled for sequential operation, and relates
particularly to a unitary system for intercoupling
a pair of separate phonographs of the dictating
machine type, which system is adapted so that
it may be readily attached to the machines and
be readily detached when the separate dictating
(Cl. 274-18)
then enclosed by a. small closely-?tting cabinet.
Our invention is particularly applicable to this
type of phonograph such as is now manufactured
and sold, for it may comprise a, pair of intercon
nected control or ‘coupling units that may be
mounted on the machines in the‘ place of the
speaking tubes, which coupling system" may be
adapted to interconnect the control systems of the
machines are to be used singly.
two phonographs so that, on completion of a trav;
Many establishments have as part of their 10 ersal of vthe sound-translating device across the‘
O?lCe equipment two or more‘dictating machines
which are normally used singly during odd hours
of the day for dictating reports, letters, memo
randa, etc. At these same establishments there
record of one machine, the other machine will be ~
automatically started, and vice versa, whereby to
provide a continuous phonograph operation. As
an additional feature of this particular applica
may be occasional need for a machine for 15 tion of our invention, there may be provided an
recording and reproducing matters of a con;
electro-acoustical transducer in each coupling" '
tinuous character such as conference proceed
unit for conditioning the acoustical machine forv
ings, telephone conversations, etc.; but it may
recording electrical sound-representing signals.
not appear economically justi?able to purchase a
This conversion of the machines for recording and
special dual machine just for this purpose. By 20 reproducing electrical signals is highly important
our invention, however, two such single machines
because sequential phonograph arrangements are
on hand may be readily interconnected for re
used commonly for recording conference proceed~
cording and reproducing relatively continuous
lugs and the like, wherein a large ampli?cation of '
matters. This is accomplished by providing a cou
the voice energy is needed to obtain a satisfactory
pling apparatus of relatively small cost which can 25 level of recordation on therecord.
be readily attached to two separate dictating ma~
Our invention contemplates that the coupling‘
chines to interconnect them for sequential‘ opera
units be interconnected by a ?exible means, and
tion and be also readily detached so that the
that this means may be either of a mechanical or .
separate machines may be used singly as needed.
electrical type. ,We preferably employ, however, .
It is accordingly a general object of our inven 30 a ?exible mechanical connection—-suitably, for
tion to enable normally singly-used dictating ma
example, a Bowden wire-for we ?nd this type of
chines to be interconnected for sequential opera
connection permits a great simpli?cation in the
tion by the mere attachment of a simple unitary
structure of the coupling system, provides a wide
coupling system thereto.
latitude in control of the phonographic machines
Our invention has been adapted to acoustical 0: Ca and assures a dependable operation.
tF/pe phonographs such as are disclosed in Langley
It is an object of our invention to provide im"
Patent No. 2,150,554, and we do herein illustrate
proved means for intercoupling phonographs for
and describe our invention in connection with this
sequential operation.
type of phonograph. It will however be under
It is another object to provide phonographs with
stood that we intend no unnecessary limitation 40 a unitary intercoupling system therefor which
of our invention to this type of phonograph for
may be readily attached to interconnect a plu
l e broader aspects of our invention have applica
of the phonographs for sequential opera
tion to phonographs generally.
tion, and may be detached to permit the separate
Acoustical-type phonographs, or dictating ma
phonographs to be used singly, as desired.
chines, are provided with speaking tubes and on
It is another object to provide a unitary cou
these speaking tubes there are provided manually
operable controls for putting the machines into
and out of operation.
accordance with the
abovementicned Langley patent, the speaking
tube and a?ixed controls each have a separable
connection with the phcnographic machine by
which they may be readily detached as a unit,
this facility for detachment having been provided
pling system which is adaptedfor attachment to
phonographs as now constructed for interconnect- .
ing pairs of phonographs for. such sequential op
eration, and which may be readily detached to ‘
permit the separate phono-graphs to be used
singly, as desired.
It is another object to provide a unitary sys
tem for intercoupling phonographs for sequential
so that the speaking tube may be removed when.
operation which permits the ‘separate phono—.
thehmachine‘ is not in use and the machine be .55 graphs- to be used singly, as desired.
and a feed nut 56 which is pivoted to the carriage
l for movement into and out of engagement with
the feed screw. This abovedescribed mechanism
for producing a relative progressive movement
between the translating device 2 and record 5
It is another object to provide a unitary system
for interco-upling phonogra-phs for sequential op
eration which permits the phonographs so inter
coupled to be differently positioned relative to one
another as may be convenient.
_ that is, a rotation of the record and concomitant
It is another object to provide a unitary at
tachable systems for“ interconnecting a pair of"
traveling movement between the‘transla-ting de~
vice and the record?weiherein‘ reierto as the
phonographs‘ for sequential operation and for
operating or drive mechanism of the machine.
concomitantly converting the audio systems of
In the usual acoustical-type phonograph the
such phonographs for recordation and reproduc 10
tion of electrical sound-representing. signals.
to as circuit
it in Figure
for the 19,
iii, which
It is a further object to provide improvedv
means for intercoupling phonographsifor, sequene
a so-called hook. switch l8. This hook switch
comprises a pivoted arm 49 which projects for~
tial operation, which is simple in constructiom
flexible in control and dependable in operation.
These and other objects of our invention‘will
i more fully appear from the following. description
and the appended claims.
In the description of our invention reference
is had to the accompanying drawings, of which:
Figure: 1.- is a. partial elevational view of an
acousticaL type phonograph to which" the dis~
closed: illustrative embodiment of our invention
is adapted. to i be: applied;
FigurerZ is a: top plan view of the sound-trans
lating device; of‘ such phonograph as seen with
the; speaking tube detached;
FigureyB is a vertical sectional view or such
acoustical-type phonograph, taken» on the line
3-3 of Figure 9‘but with parts broken away, and
showing one. of the coupling; units of ourinven
1 wardly from the frame I and serves as a sup
port, during non-use'of the machine; for a speak
ing tube 20, this tube being provided for con~
ducting sound to and from the translating de
vice 2 as is shown in Figure 1. The weight of
the tube on the arm 49 serves to hold the switch
I8 open and keep thev motor [El idle‘during non
use of the machine, but when the tube is re
moved the arm 19 is moved upwardly under the
influence‘of a spring (not shown) to close the
circuit ll and start the motor‘ running.
The clutch i3 is controlled by an electromag»
netic clutch device 25 mounted underneath the
frame 1. This device is coupled to the clutch
by way of a link 22 and a lever ‘23 which is shown
30 in Figures 3 and 9. The clutch device is prefer
ably constructed according to U. S. Langley Pat~
ent No. 1,380,486, to which reference may be had
Figure‘ 4. is a’ partial bottom‘ view‘ of one such
for details of its construction.. For the present
coupling; unit‘ with a' cover' part removed to show
purpose, the clutch device is su?iciently described
35.7 by the statements that it comprises a pair of
the. interior" construction.- thereof;
Figure? is a partial sectional view of one such
start and stop electromagnets 24 and 25 (see Fig
coupling 'unit- taken on the lined-4'» of Figure 4;
ure 10), a pivoted armature 26 which is con
Figure: 6" is a" top plan View, with the cover
nected to the aforementioned link ‘22 and at
removed-,1 of; one: such coupling unit;
tractable alternately by the electromagnets upon
Figure 7.. is a‘ detailed sectional view taken on
their respective energizations, and circuit means
the line: 'I.—-'li of Figure 6;
for automatically opening the circuit 01‘ the elec
Figure:8:is: a- detailed view taken on the line
tromagnet last energized upon attraction of the
8-8 1 of Figure 6;
armature thereto and for concomitantly prepar
Figureig-is a partial-front View of two phono
. ing the circuit of the other. electromagnet for I
graphic machines as. intercoupled'by our inven
' next energization. This circuit means may com
prise'a single~pole double~throw switch having
Figure: adiagrammatic'view of thecircuits
a pole member 2? connected to one side of the
and mechanism of a-Jdual phonograph arrange
power supply line i? and operated directly by
ment according- to. ourinvention; and
the armature 2%,. and cooperating switch con
Figure 11 is‘ a» perspective view’ of the rotary 50 tacts 28 and
connected serially to the respec
switch structure of. one" of the coupling units.
tive electromagnets and so positioned that the
tion applied thereto;
In; the: drawings there is. shown a common.
variety of acoustical-type vdicta-ting machine. Asw
contact connected to'one electromagnet is en‘
which is. mounted" slidablyi'on a pair of cross rods
3 and 3a fortravelingmovement- along a record
support 4. The record support is" typically of a
and vice versa.
support or mandrel has a. central shaft 8 jour
nalled: at‘ one end. to an: intermediate standard
9 of theiram'e:v ‘i. Rotation" of the mandrel is
connected to one side of the power line I‘! which
theitrans'latingdevice along-the record. 5.. This
supplied momentarily to thesstal‘t‘ electromagnet
gaged by the pole member 2.? when the armature
appears in’ Figures l, 3 and 9 this machine has.» '
a carriage l for a sound-translating device 2,. . has been attracted to the other electromagnet,
For controlling the clutch device 2|, there is
provided a. manual single-pole double-throw
switch 31) which is typically placed on the outer
mandrel‘ type adapted for supporting a cylindri
cal'record 5. The crossrods are carried-byup 60 portion of the speaking tube 20 as is shown in
Figure'l. This switch has its pole member. 3|
right‘ side standardsti ofiaframe liandathe record -
is opposite to that to which the pole member 21
is connected and has itsswitch contact members
produced by. a motor i0; (only-diagrammatically 65 32 and 33 connected. respectively to the start and
stop electromagnets, 24 and,25. The, pole mem
show-nv in. Figure 10). which: transmits? its; power
ber of this manual switch is biased to stop posiby‘ way; of‘ a.be1t‘ H; to. a: drive. pulley-‘l2: This
tior_—that is, a position wherein it is closedwith:
, pulleyisijournalled tothe leftzstandard. 6 of. the
the-contact memberconnected. to thestop coil.
frame and"; 183001113186. by way: of: a clutch is. to.
the. mandrel shaft; The. motor. It alsohasa 70 Ondepressing the pole member 3! to make con-1
tact with. the. other contact member, current is
drive connection to the carriage. !. for: feeding.v
drive connection is completed. by way or a. feed.
‘screw? l4. that is: journalled to the standards; 5.
and coupled by gearing; I15: tothe. mandrel shaft;
and the. armature is actuated to engage the
clutch; vice.versa,. on releasingthe pole. member‘
3! current. is supplied momentarily'to; the». stop;
electromagnet andthe armature is attracted to
disengage the clutch.
The sound-translating device 2, which may
telescope on the tubular neck 34 exteriorly there
of. The details of construction of this tube 54
have any suitable construction, is herein illus
trated as being of the type described in Dunning
et al. Patent No. 2,279,227 to which reference may
be had for details of its construction. For the
present purpose the device is suf?ciently described
as havingr a tubular neck 34 for conducting sound
to and from the device, recording and reproduc
ing styli 35 and 36 for cooperation with the record
5, and a pair of lifting ?ngers 31 for selectively
raising and lowering the styli into and out of
engagement with the record. These lifting ?n
gers are pivoted to the carriage l and controlled 15
same as of the corresponding part of our inven
by a cam member 38 that is splined at 39 to the
cross rod 3 (see Figure 3). To control these
?ngers, there is a hand lever 39 which is pivoted
are not shown in the drawings since they are the
tion hereinafter described. For the present, it
may be noted that this tube 54 is typically made
of an insulating material such as of Bakelite,
that it has four equidistantly spaced arcuate ter
minals set into the exterior surface thereof and
connected to the manual switch} 30 and signal
lamp 50 in the manner aforementioned. and that
When the cap 54 is in mounted position these
terminals contact the buttons 52 to complete the
connections from the manual switch 39 and signal
lamp 50 to the power supply circuit i5 and clutch
device 28. Additionally, it may be noted that for
releasably retaining the cap 53 swivelingly to the
translating device, the tube 54 is provided with
at 40 to the carriage and coupled by a link 4!
an exterior annular groove which the contact
to the cam member, the rod 3 being journalled 20 buttons 52 engage under their spring pressure,
in the standards 6 to permit the cam member
and that for limiting the range of swiveling move
to be rocked back and forth by the hand lever.
ment of the speaking tube the cap thereof is pro
The control action of the hand lever is typically
vided vn'th a front ?n 53a which engages a wide
such that when the lever is in the raised posi
notch 4122 provided in the ?ange 41 of the trans- ‘
tion it occupies in Figure 1, the reproducing . lating device.
stylus is in engagement with the record; that
It will be understood that the apparatus here-y
when the hand lever is in a lowered position
inabove described is common to dictating ma
indicated by dash-dot lines in Figure 1, the re
chines such as have been heretofore manufac
cording stylus is in engagement with the record;
tured and sold, and that this apparatus forms a
and that when the lever is at a mid or neutral
position both styli are held raised from the record.
The hand lever 39 is also adapted to disengage
the feed nut Hi from the feed screw l4 when the
lever is in the neutral position abovementioned.
In order that the feed nut may be so controlled,
it is mounted on a lever 42 which is pivoted at
43 to the carriage I as shown in Figure 3. ,A
spring 44 acts on the lever 42 and urges the feed
nut into engagement with the feed screw. When
the hand lever 39 is in recording and reproduc
ing positions, the lever 42 is under the sole in
?uence of the spring 44 and the feed nut is then
engaged. However, when the hand lever is moved
to neutral position, a pin 45 on the cam member
38 ‘engages a forwardly-extending arm 42a of
the lever 42 and cams this lever against the re
straining force of the spring 44 to disengage the
feed nut.
‘ part of our invention only by way of its combi
nation with the apparatus hereinafter described.
In accordance with our invention, we provide a
unitary coupling system for phonographs which
comprises two identical control or coupling units
55 having a ?exible interconnection 56 as shown
in Figure 9. These coupling units are adapted
to be attached to the respective phonographs.
In the present illustrative embodiment of our
invention, these units are attached to the phono
graphs in the place of the detachable speaking
tubes 24, and by that attachment the two dictat
ing machines are intercoupled for automatic se
- quential operation and are adapted for recording
and reproducing electrical sound-representing
signals, as aforementioned.
Each coupling unit 55 has a frame 51 made
suitably of stamped ?at metal parts and a cover
550. On the bottom of this frame there is secured
a hollow cylindrical Bakelite housing '58 from
which projects a central tube 59 adapted to tele
Surrounding the tubular neck 34 of the sound
translating device 2 is a cylindrical housing 46
(see Figure 3) made of an insulating material
scope over the tubular neck 34 of the sound
such as of Bakelite. This housing ?ts into the
translating device, this being the tube corre
lower part of a circular upstanding ?ange 41
spondlng to the tube 54 of the speaking tube.
provided on the frame of the translating device
This tube 59 has four equidistantly-spaced arcu
2} It is held in place .by pins or screws 4511 as 55 ate terminals 55 embedded in the exterior surface
shown in Figure 2. This housing has four equi
thereof and has an annular exterior groove 6|
distantly spaced spring terminals 48. Three of
as shown in Figure 3. When the coupling unit
these terminals are connected to the clutch device
is in mounted position, the contact buttons 52
2| by the leads 49, these being the leads which
engage the groove Bl under their spring pressure
connect the manual switch 30 to the clutch device
to make contact with the respective terminals 60
as aforementioned; a fourth lead 49 shown in
and to detent the coupling unit to the sound
Figure 2 serves with the lead to the pole of switch
translating device. The terminals 50 extend up
38 to supply power to a signal lamp 55 typically
into the housing 58 and are therein provided with
provided on the speaking tube 20 as shown in
Wings 52 which are bent over and anchored by
Figure 1. From the housing 48 these leads ex
pins 53 to the upper part of the housing as shown.
tend through an apertured boss 41a of the ?ange
in Figure Zl. Across the bottom of the housing 58
41 and then through a cable 5| along the side
is an annular closure plate '54 (see Figure 5)
of‘ the carriage l to below the frame ‘I. The
which is held in place by screws 65.
spring terminals 48 respectively carry contact
buttons 52 which extend radially inwardly
through the housing 46. On the inner part of
the speaking tube 25 there is a circular cap 53
which is adapted to ?t swivelingly onto the ?ange
47. Extending down from the central portion of
this cap is a short tube 54 which is adapted to
Mounted directly above the bottom plate of the
frame 51' is an electroacoustical transducer 65
shown in Figure 5. This transducer may typi
cally comprise a headphone of the piezo-electric
or magnetic type, the former being however pre
ferred as it is typically" very thin.
This trans- '
ducer has a tubular sound outlet 51, preferably
arms ‘i2 is connected to the stop: electromagnet
When theshaft TI is in a most counterclockwise
position-—a position wherein the crank 11a
ducer and translating device. The transducer is
thereof is inclined downwardly and to the right
secured to the frame ‘5’! by an overlying bracket
as shown in Figure 9-the forward switch arm
68 which. engages an upturned apertured lug 61a
of the frame at one end and is‘ held to the frame
by a screw 59 at the other end.
start electromagnet 24, and therback one.v of th
of a. conical-exterior shape, which is‘ adapted to ‘
~ engage the" upper inner‘ edge, of‘ the tubular neck‘
34, and extend into the neck to form a substan
tially closed sound’ coupling between the trans- -
‘l2 engages the respective switch contact member
85. and a closed circuit is formed from the central
Electrical con
nection to the transduceris made by means of a 10 or pole arm '82 through the front arm 12 to the
cable 19.
start electromagnet, this being the start position
for the switch ‘H. Provided of course the hand
Mounted above the transducer 66- is a single
lever 35 is in recording or reproducing position
and the hook switch I8 is closed, which it nor
This‘switch has three ?at spring'arms 12 mount
ed insulatedly in‘ cantilever fashion on a ?at 15 mally will be, the left machine of the phonograph.
arrangements shown in Figures 9 and 10 will now.
plate 1-3 that is supported by a bracket ‘M of the
be in operation and thetranslating device thereof
frame 51. The‘ arms are spring-biased down
will be advanced gradually across the rotating
wardly against a pivoted switch structure "It
record 5. When the translating device nears the
shown in Figure ll. This switch structure in
cludes a shaft ‘El jo-urnalled in a pair of aper 20 end of its rightward travel—which we herein
term its terminal position—the crank ‘Ha is im
tured lugs ‘E8 of the frame 51, which shaft has
pinged against the right standard 6 and the shaft~
an extending end portion thereof offset to form
pole. double-throw: switch ‘H of the rotary type.
TI is turned gradually in a clockwise direction.
On the
(In order that the coupling unit 55 will be re
shaft ‘ll between the lugs 18 there are secured
front and back insulating plates 19 and 80 which 25 strained against being turned by the force ex
erted by the standard 6 against the crank 11a,
have sector shapes such as are indicated in Fig
the coupling unit has a bracket 95) on its frontv
ure- 7. These insulating plates are secured rigidly
lower portion which engages the notch 41b of the.
together but in spaced relation along the shaft
?ange M.) As the shaft '5'! is so turned thefront
by means of two rivets 8! and pairs of inter
vening spacers $2‘ on. the rivets. Each of the in 30 switch arm 72 ?rst breaks'connection with the
respective switch contact member 85 and enters,
sulating plates has. a peripheral surface at con
onto the dwell 83 of the insulating plate 19, but it
stant radius relative to the shaft ‘H, or dwell 83,
a crank Tia. for the switch structure.
will be understood ‘that this break in the circuit
and a receding peripheral surface or recess 84.
rfhe recess on the. front insulating plate 19 is at
connection between the front and middle arms
gular range between the recesses there is a sub
ically as an incident of the engagement of the
clutch. Both the front and back arms now. ride
on the dwells 83 of the respective insulating
plates 19 and 88, but in a further continued ad
the clockwise end of the dwell 83 thereof while 35 '12 produces no direct control action because, as
afore-explained, the circuit of the start electro
the recess of the back plate 89 is at the counter
magnet is already open, being opened automat-l
clockwise end of the dwell thereof, and in the an.
stantial overlap of the dwells of the respective
insulating, plates. At. the recesses of the respec
tive insulating plates. there are secured identi
cally vshaped switch contact members 85. The
contact surfaces. of these switch members extend
vance of the carriage the shaft 11 is turned fur- ~
. ther clockwise to cause the back arm ‘#2 to ride
onto the respective contact member 85. This
closes the circuit between the central and back
beyond the recesses and form an even arcuate ex
tension of the dwells of the respective plates.
These switch contact members are held to the in
arms 72 and supplies current to the stop electro
magnet to cause the clutch it to be disengaged.
sulating. plates by the rivets 8! but, being identi
caily shaped, they are pointed in. opposite direc
The connection 58 between the coupling units
is for intercoupling the rotary switches 11 so that
tions. Between the spacers 82 on each rivet 8!
there is clamped a third switch contact member 50 the operation of either of these switches willcause
the other to be automatically operated. Prefer
8!}. having. a dwell along its full peripheral sur
ably, the connection 56 is of Bowden-wire type
face. The rivets SI. spacers 82 and switch con
comprising a ?exible armored cable 9! which is
tact members 85 and 86 are all made of a con-_
anchored at the ends into rigid tubular parts
ductive material such as of brass, and are ac
cordingly electrically connected together. It is 55 511) provided on the frames 5'5, and a. ?exible wire
92 which extends through this cable. The ends
against the dwells of the insulating plates 19 and
S8 andof the switch contact members 85 and 86
of this wire are connected to arms 93 secured to.
the shaft W, and the length of the wire is so
selected that, with the wire taut, the following,
two conditions will be ful?lled: (1) the rotary
switch ll of one coupling unit will be in stop
position when that of the other unit is in start‘
position, and (2) the said one switch will enter
startposition when the other has been moved
that the arms 72 slidably bear.
The. switch arms 72 are connected to three of
the arcuate terminals 63 of the coupling unit by
a three-wire cable 88; the fourth one of the
terminals Eil-the one contacting the contact but-.
tonv 52 that connects to the lamp 5!} when the
speaking, tube 29 is attached—being not used.
This. cable. 8!! may fold over the side of the cou
65 midway from start to stop position. - It will be‘
pling unit, and enter through a ferrule 89 into
the cylindrical housing 58 wherein the. leads
thereof are soldered to the. three respective ter
minals just mentioned.
These leads are so con
nected tothe terminals 63 that when the cou
pling unit is in mounted position the central one
of the arms ‘i2--which is the pole member. of.‘ the,
rotary switch lie-is connected.‘ directly to. one
side offthe powersupplylin'e H. (‘see Figure 10.) ,>
the. front) one . of‘ the. arms. .72 is. connected‘. to the. 75;
understood that the start position of each switch
begins when initial contact ismade between the:
front switch arms 72 and respectiveswitchmem~
bore 85, and that to ful?ll condition ('2) without
imposing strain on the interconnection 56, the. '
forward arm 12 of the rotary switch ‘H: of the.
machine last. started is permittedto, move beyond
startpositicn, with the arm riding across the.
face of, the-respective. contact member85‘as ap
pearsin. Figure I7,.while therotary switch ‘ll of.
the other machine is moved from mid to stop
The sequential operation of the two phono
taln an entirely dependable. and stable operation
of the phonographs without ever encountering
any instable or chattering, conditions of the
clutch-operating mechanisms 2| such as will
sometimes occur should they be electrically in
terconnected. Also, the use ofa mechanical type
of interconnection permits a wide ?exibility in
control over the phonograph arrangement, such
as is described in the two foregoing paragraphs,
i0 by the addition of very simple means.
graphs in the dual arrangement above described
will be understood to be as follows: First, sup_
pose that the carriage of the idle machine is rest—
ing in initial position and that the carriage of the
operating machine is being driven across the rec
ord, the operating machine being in this case the
leftward one of the two machines shown in Fig
ures 9 and 10. When the carriage of the operat
ing machine nears terminal position to cause the
switch ‘H thereof to be moved from start position
to mid position, the switch ‘H of the other ma
chine is moved from stop position into start posi
tion and the idle machine is thereby started.
Both machines will then be in operation while the
switch 'H of the ?rst-operating machine is being
It will be understood that the cables l0 to the ‘
transducers 66 constitute the signal input circuits
for the phonographs when they are to be oper
ated for recording and the signal output circuits
when the phonographs are to be operated for re
Thus, when the phonographs are
used to record from and to reproduce into elec
moved onwardly from mid position to stop posi
tion, whereupon the ?rst-operating machine is ~
automatically stopped. During the traversal of
the carriage of the second machine across the
record, the attendant. will shift the hand lever 39
of the ?rst machine to neutral position, manually
trical sound systems involving electrical ampli?_
cation, the cables 10 will be connected to the out
put of the ampli?er of such sound system during
recording and to the input of the ampli?er dur
ing reproducing, such ampli?er and circuit con
trol connections as may be provided being not
return the carriage to initial position, replace the ~
used record,'and then return the hand lever 39
back to operating (recording or reproducing) po
sition. When the carriage of the second ma
chine nears its terminal position, it will start the
herein necessary to show.
We have herein particularly shown and de
scribed an embodiment of our invention as ap
plied to an existing type of dictating machine.
This embodiment illustrates clearly the broader
?rst machine and thereafter stop itself. Since 30 aspects of our invention as well as speci?c details
vided a continuous phonograph operation by the
of one ‘preferred construction thereof, but no un
necessary limitation of our invention to the de
tails of this embodiment or tothe details of con
struction of the dictating machine to which our
combined machines.
invention is herein applied is intended. It will,
in this procedure there is an overlap of opera
tion of both machines at the transition in oper
ation from one machine to the other, there is pro- ‘
for example, be understood that our invention is
In order that there may not be any heavy
applicable to phonographs wherein the relative
strain imposed on the Bowden wire 92, or carriage
feed mechanisms of the machines, should the at
progressive movement between the record and
tendant let the carriage of one machine rest in
translating device is produced by moving either
its terminal position, with the feed mechanism 40 the record or the translating device with respect
of that machine engaged, while the otherma
to the other, that the drive or operating mecha
chine is moved into its terminal position, there is
provided a yieldable coupling between the units
55 which comprises a torsion spring 95 connected
between the arm 93 and shaft 11 of each unit.
The arm 99 may have a hub portion in the form
of a bail (see Figure 6); and adjacent this hub
portion there is an arm 96 which is rigidly se
cured to the insulating plate '19 of the rotary
switch structure ‘Iii by a stud 99a and provided ,
with a turned-over lug 91 that overhangs a short
arm 98 of the bail. The spring 95 is hooked be
tween this lug and the arm 93, and normally
yieldably presses the short arm 99 against the lug
91. However, on moving both switches ‘H into
stop position at the same time, this spring 95
yields so as not to impose any heavy strain on
the intercoupling between the two units 55,
In some instances it may be desired to have
both switches ‘H placeable simultaneously into
start position so that both machines may operate
at the same time. In order that this may be
done the Bowden wire is linked to the arm 93
through a one-way coupling 98 shown in Figure
3. For instance, the ends of the wire may con
nect to rigid links 99 which pass slidably through
apertured studs I00, that are pivoted to the arms
93, and then terminate in heads I01. In normal
operation the studs bear against the heads to
provide a tension coupling between the pivoted
switch arms 93, but when both switches are
shifted simultaneously to start position the studs
I00 will slide downwardly along the links 99.
By interconnecting the coupling units 55 with
a mechanical means as above described We ob
nism may be controlled by wholly electrical or
mechanical means, and that the audio system
for the machine may be wholly or the acoustical
or electroacoustical type, for the adaptation of
our invention to phonographs differing in these
and other respects will be readily apparent to
those skilled in the art from the foregoing dis
closure. Also, it Will be understood that the em
bodiment herein disclosed may be modi?ed in
other ways without departing fro-m the scope of
our invention, which we endeavor to express ac
cording to the following claims.
We claim:
1. In a dual phonograph arrangement compris
ing two separate phonographic machines respec
tively including a rotatable record support, a
phonographic translating device and an operat
ing mechanism for rotating said support and con
comitantly producing a relative progressive
movement between said support and translating
device: a detachable unitary system intercou
pling said machines for sequential operation com
prising two control units respectively detachably
mounted on said machines and adapted for
starting and stopping said. operating mecha
nisms respectively; a coupling between said con
trol units, including a ?exible operable portion
permitting independent movement of said ma
chines relative to one another, for causing either
unit to be placed into start position upon the
other being operated into stop position, and. vice
versa; and means, coupled to each translating
device and operated by the relative progressive
movement between said record support and the
including a rotatable record support, a movably
mounted phonographic translating device and an
anism into and out of operation, said'system com
prising a pair of control units; separablemeans
for detachably mounting said control units .onto
said machines respectively and for concurrently
effecting operative control connections of the
units to said devices, each of said control units
operating mechanism for rotating said support
and concomitantly moving said translating device
stop positions to control the respective one of said
translating device for causing operation of the
respective control unit.
2. A dual phonograph arrangement comprising
, two separate phonographic machines respectively
having a control member movable into start and
devices; and a flexible Bowden wire coupling be
from initial to terminal positions: a detachable
tween the control members of said unit, permit
unitary system intercoupling said machines for se
ting independent movement of said machines
quential operation comprising two control units re
relative to one another, for causing either control
spectively detachably mounted on said machines
member to be moved into start position upon
and adapted for starting and stopping said op
the other control member being moved towards
erating mechanisms respectively; means coupled
to said units and operated by said respective 15 stop position.
8. ‘In an arrangement for intercoupling a pair
translating devices in the movements thereof into
of phonographic machines for sequential opera
terminal positions for placing the respective units
tion, said machines respectively including a rec
into stop position; and-a coupling between said
ord support, a phonographic translating device
control units, including a flexible operable por
tion permitting said machines to be moved 20 and an operating mechanism for producing a
traveling movement of said device relative to said
independently of one another for causing
support: the combination of a control unit for
either unit to be placed into start position upon
each of said operating mechanisms; separable
the other being operated into stop position.
means for detachably securing saidvcontrol units
3. A detachable system for coupling for sequen
tial operation two phonographic machine-s each 25 to said respective phonographic translating de
vices and for concurrently eifecting operative
having an operating mechanism and a device for
control connections of said units with said oper
putting the mechanism into and out of operation,
~ating mechanisms respectively; control members
,said system comprising a control unit for each
1 of said devices; separable means for detachably
mounting said control units onto said machines
respectively and for concurrently e?ecting opera
tive control connections of the units to said de
vices respectively; a control mechanism on each
on said units movable into start and stop posi
tions to put said operating mechanisms into and
out of operation; ?exible means intercoupling
said control units and permitting independent
movement of said machines relative to one an"
other for moving the control member of one unit
of said units movable into start and stop positions
to put the respective operating mechanism into 35 into start position upon the other control mem
ber being moved to stop position; and members
and out of operation, each of said units and re
on said machines for abutting against said con
spective devices being adapted to maintain the
' trol members and moving the same between start
respective operating mechanism in operation
and stop positions in response to the traveling
during movement of the respective control mem
ber from start to stop position and to maintain 40 movement of said respective translating devices.
9. In an arrangement for adapting a pair of
the mechanism out of operation during move
separate acoustical-type phonographic machines
ment of the control member from stop to start
for recording electrical sound-representing os
position; and means intercoupling said control
cillations and intercoupling said machines for se
units, including a ?exible operable portion per
quential operation, said phonographic machines
mitting independent movement of said machines
respectively comprising a record support, a sound
relative .to one another, for causing either control
translating device, an operating mechanism for
member to be move-d into start position upon the
producing a progressive relative movement be
other control member being moved through a
tween said support and translating device and a
first portion of its travel from start to stop po
control connection for said operating mechanism
terminating at said translating device: the come
4. The subject matter as set forth in claim 3
wherein said intercoupling means comprises a
?exible mechanical connection between said con
trol members, and wherein each control member
has a freedom of movement beyond start posi
tion to permit either control member to be moved
freely through the ?nal portion of its travel from
bination of a pair of coupling devices each in
cluding an electroacoustical transducer and a
control unit, said coupling device-s being adapted
for detachable mounting onto said respective
sound-translating devices in position wherein
each transducer feeds into the respective trans
lating device; means for connecting said control
start to stop position.
units with said respective control connections
5. The subject matter as set forth in claim 4,
upon mounting said coupling devices, said con
wherein said intercoupling means comprises a
trol units being operable into start and stop posi
mechanical connection between said control mem
tions for putting said respective mechanisms into
bers and yieldable means in said connection for
and out of operation; and a coupling between
permitting either control member to be moved
said control units, including a flexible operable
onwardly into stop position while the other con
65 portion permitting independent movement of said
trol member is retained in stop position.
machines relative to one another, for moving
6. The subject matter as set forth in claim 3,
either unit into start position upon the other
wherein said intercoupling means comprises a
being moved to stop position.
mechanical connection between said control
10. In an arrangement for adapting a pair of
tion for permitting both control members to oc 70 separate acoustical-type phonographic machines
for recording electrical sound-representing oscil
cupy start positions at the same time.
lations and intercoupling said machines for se
7. A unitary detachable system for coupling
-members and a one-way coupling in said connec
quential operation, said phonographic machines
for sequential operation two separate phono
respectively comprising a record support, a sound
graphic machines each having an operating
mechanism and a device for putting the mech 75 .translating devicei a sound-transmission tube
extending from said device, an operating mech
means terminating at said device: a unitary de
anism for producing a progressive relative move
tachable apparatus intercoupling said machines
ment between said support and translating. de- _
for sequential operation and adapting the ma
chines for operation with electrical sound-repre
senting audio systems, comprising a pair of cou
pling units detachably connected to said trans-g
lating devices, each of said coupling‘ units in
cluding an electroacoustical transducer coupled
spective sound tubes, an electrical switch and cir- V
acoustically with the respective translating de
cuit means for connecting said switch to the said 10 vice, and a control device having operable coupling
respective circuit leads upon mounting the trans
with said control connections when’ the unit is
ducer, said switches being movable into start and
so mounted, said control devices being operable
stop positions to put said respective operating,
into start and stop positions to put the respec
mechanisms into and out of operation; a ?exible
tive drive means into and out of operation; a cou
operable connection between said switches, per
pling between said units, including a ?exible op
mitting independent movement of said machines
erable portion permitting independent movement
relative to one another for moving either switch
of said machines relative to one another, for
into start position upon the other being moved
causing one control device to be moved into start
to stop position; and means for causing said
position as the other is moved into stop position,
switches to be operated by a relative progressive 20 and vice versa; and means for causing said con
movement of said respective translating devices.
trol devices to be operated by relative traveling
11. An attachable system for coupling acous
movement between said respective translating de
vice and control circuit leads for said operating
mechanism and terminating at said sound-trans
lating device: the combination of a pair of cou
pling devices each including an electro-acoustical
transducer detachably mountable onto said re
tical-type phonographs having movable sound
translating devices, operating mechanisms for
moving said translating devices from initial to
vices and record supports.
13. In a dual phonograph arrangement com
prising two separate 'phonogr-aphic machines re
spectively including a phonographic translating
terminal positions, and control circuits for said
mechanisms terminating at said respective trans
lating devices, said system comprising two elec
troacoustical transducers adapted to be mounted
device and an operating mechanism adapted for
producing a traveling movement of said device
between initial and terminal positions: a detach
on said translating devices respectively; a pair ‘
able unitary system intercoupling said machines
of switches carried with said transducers respec
tively; circuit means for automatically electrical
ly connecting said switches to said respective con
trol circuits upon mounting said transducers;
means interconnecting said switches for causing ;
for sequential operation comprising two control
units respectively detachably mounted on said
machines and adapted for starting and stopping
said operating mechanisms respectively; a ?ex
ible coupling between said control units, permit~
ting independent movement o£~said machines
relative to one another, for causing each unit to
be operated by the other; and means, compris
either to be operated by the other; and stationary
means on the phonographs for cooperation with
said switches respectively to operate the switches
into stop positions in response to movement of
said respective translating devices into terminal
12. In a dual phonograph arrangement com
prising two separate phonographic machines
each including a rotatable record support, a rec
ord cooperable translating device of the acoustical
type, drive means for effecting a relative travel
ing movement between said translating device
and support, and control connections to said drive
ing an element coupled to each translating device
[ill and a respectively associated element mounted on
the machine in the path of movement of said
?rst-mentioned element, for causing operation of
the control unit of each machine in response to
a traveling movement of the respective translat
ing device.
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