DE1218547B - Device for the optional connection of two or more sound generator stations to a central sound recording device - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY GERMAN WJKW ^{PATENT OFFICE}

EDITORIAL

Int. α .:

H04m

H04q

German KL: 21 a3 - 54/10

Number: 1218547

File number: J 24216 VIII a / 21 a3

Filing date: August 9, 1963

Opening day: June 8, 1966

The invention relates to a device for the optional connection of two or more tone generator stations to a central sound recording device, with coupling switching means assigned to the sound generator stations for establishing a connection that allows the transmission of sound and control signals between the sounder stations and the central sound recording device and with safety switching means, during the connection of a tone generator station with the recording device ίο prevent other sounder stations from accessing the recording device and at the same time Calling several tone generator stations according to a given order, giving priority to only one. It are already facilities for establishing connections between a central sound recording device and several connected dictation stations became known. These facilities include multiple microphones through transmission switches and a dialer to the recorder can be connected. The calls from the individual dictation stations work independently each other on the dialing system. These facilities have means to ensure that a once Established connection between a dictation station and the central sound recording device is not interrupted by other calls during the speaking time. Call relays are used for this purpose of the individual dictation stations connected in parallel in a common circuit. This circuit and the windings of the call relays are dimensioned so that when one of the call relays is energized the voltage in the circuit is insufficient to energize a second call relay. It However, this has the disadvantage that in the event of multiple calls occurring at the same time no decision is made about which dictation station has access to the central sound recording device should receive. In the above arrangement, in such a case none of the call relays can respond, so that the central sound recorder for an access would be blocked.

However, it has also been proposed that, in order to avoid simultaneous multiple assignments in a common interlocking line, a slip switch is arranged one behind the other for each subscriber station, so that in the case of a parallel call from several simultaneously operated slip switches, only one is preferred, namely one due to the order in which they are connected in series Switch can initiate the assignment. This on device for the optional connection of two
or more tone generator stations to a central one
Sound recorder

Applicant:

International Business Machines Corporation,

Armonk, N. Y. (V. St. A.)

Representative:

Dipl.-Ing. H.-E. Böhmer, patent attorney,

Böblingen (Württ.), Sindelfinger Str. 49

Named as inventor:
Nicholas James Albanes, Bethesda, Md .;
Matthew Peter Langendorf,
Lexington, Ky. (V. St. A.)

Claimed priority:

V. St. v. America August 10, 1962 (216 261)

Order has the disadvantage that for the call of the central sound recorder in addition to the decrease the hand microphone from the hook switch of the dictation station concerned an additional switch is to be depressed, which operates the receipt switch in the common interlock circuit. The object of the present invention is to provide a dictation stations that are simple and can be connected in number The system can be easily adapted and expanded to meet the requirements that arise in practice to develop the type mentioned, which avoids the disadvantages mentioned by only the call to a single external station in the central sound recorder takes effect and at simultaneous call of several stations a station preferred according to a predetermined order of precedence Gains access to the central recording device. The invention also provides measures through the secrecy of the sound recordings emanating from one station from all other stations is backed up. The object according to the invention is essentially achieved by that the switch-on circuits of the coupling switching means are connected in series to form a priority chain Blocking switches run from which

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each assigned to one of the coupling switching means and the selection and connection lines of the Andurch This position to interrupt the priority chain can be actuated by the device 101 via the transmission, and that the coupling switching means pulling station 146 and each of the stations 120, 121 and 122 assigned access memory circuits each directed by the.

Point of the priority chain to be fed by 5 During the dictation process, a switch

the blocking switch of the relevant tone generator 138 on the transmission control device 131 in

station is located. an upper of his three positions, in the so-called

An advantageous embodiment of the invention consists of the dictation position set. With this setting, the fact that each dictation station pulls a selector relay switch 138 can be any of the remote stations which, in addition to the connection of the one-io functions 120, 121 and 122, have access to the central individual function lines establishing contacts direction 101 for dictation purposes, if not activated a blocking contact, that the blocking- at the same time another station is connected to the central contacts of all stations as a series circuit in front of the station. The microphones 123, 1-24 and mutually parallel excitation circuits of the 125 normally rest on hook switches to switch select relays of all stations and that the 15 keep the stations in the switched-off state. The connection in any remote station kierkontakt of a selector relay in the holding circuit is made by lifting the microphone from its sen all in the priority chain following dialing fork,
relay is located. For example, if the dictation is carried out by a

The circuit arrangement according to the invention has requested a remote station 121, then the output

the advantage that you can easily set the connection selection sequence for the connection of this station 121 with

th additional dictation stations or switching off the central device 101 by lifting the

one or more dictation stations. Likewise, microphone 124 initiated from his fork. if

cannot be in the central device 101 at this time by simply loosening and rearranging the

The station 121 is automatically plugged into the junction box that is to be used

central sound recording device and directly connected to it for dictation purposes

Stations are set to any priority order. On the other hand, if one of the other states

will. options 120 or 122 at this point with the

Further features of the invention are connected from the central device 101, no claims can be made in connection with a subsequent 30 connection of the station 121 to the central device 101 Execution described on the basis of drawings. The system according to FIG. 1 Approximate example of the invention can be seen. It shows includes a dialing and connecting device, the

F i g. 1 is a diagrammatic representation of a pre-automatically a connection between the center

additional embodiment of the invention, central device 101 and a remote station 120,

2a and 2b a microphone with control switch 35 121 or 122 according to a predetermined procedure

tern, as used in every dictation station, form a ranking plan if there are two or more stations

F i g. 3 is a diagrammatic representation of a z- requesting an operation at the same time. The priority

central recording device, which is also a super-arrangement in the example shown,

Tragungsgerät contains that the central device 101 closest station, so

F i g. 4 and 5 a circuit diagram of the device according to 40 the station 120, preferably opposite one of the central

the invention. central device 101 distant station, such as. B. the

General description of ^{station 121} > ¹ ^ is connected to ^the central device.

Each dictation station is a display device in

As can be seen from Fig. 1, the dictation and shape of indicator lamps 139, 140 and 141 is assigned.

Assigns transmission device 101 in the central station 45, which serve to indicate that the station is with

connected by cables 102 to 110, connecting parts 111 to the central device 101 for dictation purposes

115 and distribution boxes 116 to 119 with three is lost.

remote dictation stations 120, 121 and 122. The transmission control device 131 contains

the ones with microphones 123, 124 and 125 also have an indicator light 142 to indicate that the

are permitted. Additional dictation stations can 50 transmission station 146 with the central device

the system was connected by connection to cables 126 and 101 for transmission purposes. A

Connecting part 127 can be added. The transfer process is controlled by setting the

The central dictation and transmission device 101 switch 138 in the middle of its three positions, is initiated via the switch box 116, the cables 128 and 129, the transmission position. If, in the case of the and the connecting part 130, no transmission station 146 is connected to 55 setting the switch 138 to this position, the control unit of the stations 120, 121 or 122 with the central direction 131, headphones 132 and a transmission device 101 connected for dictation purposes, the foot pedal 133 is included. The device 101, which will later be described in detail later on transferring direct access to the device 101, contains a magnetic aiming device and the normal selection and connection tape 134 on which the functions from any station 60 with respect to the stations 120, 121 and 120, 121 and 122 received dictations are recorded - 122 are made ineffective,
net. The device 101 has a number of If, on the other hand, when switching the sound control organs, such as a volume control 135, ters 138 in the transmission position one of the individual tuning devices 136, which the precise remote stations 120, 121 and 122 are just about to track adjustment to carry out a Transmission 65 is to use the central device 101, which will secure, and an index digit selector 137 to the transmitter not gaining control of the device 101, quickly locating any desired record until the connected remote station has finished its dictation recording track area on the tape 134th . As soon as the remote station completes the dictation

5 6

has completed, the transmission station is auto- formed recording medium, which during the progress

Automatically connected to the device 101 when the dictation steps are optionally punched

Switch 138 can be left in the transmission position in order to subsequently notify the transmitter.

will. that the end of a letter has been reached

Each of the remote stations 120, 121 and 122 5 or that a certain addendum at a certain and also the central device 101 has a buzzer th place during the replay of the magnet for signaling purposes. When the switch 138 should be inserted into its band. The perforation of this signal position is moved, the buzzer in the recording tape in the device 101 is excited under the central device to give the transmitter an audible control of the switch 204, which in its upper face display that the remote station is OK Position LTR is moved to an »end of dictation has ended. . Letter "punching, or which one

When the transfer station 146 is moved with the device in the lower position SEC , the

101 has been connected and the switch 138 is to cause special command punching,

the transfer position is, a can.

The station requesting service can do this by pressing i ₅

of the associated operating button 143, 144 or the central recording transmission device

145 show. The buzzer of the device 101 becomes 101 according to FIG. 1 is shown in more detail in FIG

then actuated to instruct the transmitter, shown. The device has several on one

that dictation is requested. The Sum base plate 301 assembled components whose

mer in the remote station is also activated. 20 circuit connections in one cable 302

The corresponding connections between which are summarized, which the cable 102 in the

Service requesting station and the central F i g. 1 corresponds. The device is with the central

Device 101 are then manufactured as soon as the station distribution box is connected via a plug 303

the transmitter, the switch 138 again in the Dik- bind, which is to the connecting part 111 in F i g. 1

tier position moves. 25 heard. The F i g. 3 is a pictorial representation

_ _x . j ~., _A. ^ _x . and it is understandable that different components

Controls m the Diküerstaüonen _{teQ UQd} power connections in the F i g. 3 in first

Each of the microphones 123, 124 and 125 are similar in their line for the sake of clarity. Positions of the microphone shown in FIGS. 2a and 2b. Fig. 2a is a front view and Fig. 2b is a 30th order showing, for a machine, a rear view of the microphone. Displacement would be found,
These controls are contained in a housing 201. Although other types of magnets are also recorded. A transfer element 202 is arranged behind voltage carriers such as cylinders, disks or bands, a grid generally designated 203- readily used for carrying out the invention. The microphone has a three-digit 35 could be used as shown in FIG. 3 command switch 204, a three-position test switch, device showed a magnetic tape 304. The device shown in FIG. 3 205 and a stop-start or recording device can be provided for recording direction 206. The switches 204 and 205 and dictations as well as used for the transmission are also actuated corresponding to the device 206, and the type of work is determined by the associated contact units 207, 208 and 209, respectively. 40 control circuit of the unit. The circuit The command switch 204 has three working positions, comprises a recording relay 324 and an amplifier contained in a housing 305 with LTR (write), OFF and SEC.
(Secretary) are designated. The test switch 205 has the information to be recorded from one of three working positions, which are designated as REC (recording microphone off to amplifier 305 and voltage), L / 5 (listening) and REV (testing) 45 by means of a combined recording and disconnection . The movement of the switches is transferred to their reading head 306 on the magnetic tape. Signals recorded on the magnetic tape 304 prior to the positions with the resulting closing or opening of the associated contact units can result from the magnetic head 306 during the animal in corresponding functions that are carried out in the central dictation for test purposes or for transmission device 101, if a Station can be monitored with 5 °. Which was connected from the magnetic head 306 to the device 101. The monitored signals are monitored by the amplifier 305

The operator of a remote station whose amplified and either connected to a microphone like the one in

Microphone was lifted from the fork, the Fig.2a and 2b shown, or to a loudspeaker

the dictation process, e.g. given by the movement of the speaker 307 (Fig. 3). During one

Switch 205 in its upper recording position 55 transmission process are amplified

REC, initiate. This prepares the central device 101 signals to the headphones, such as the headphones 132 in FIG

for a recording process. The actual F i g. 1, created. The central recording transfer

Recording occurs when the operator of the portable device can have a local microphone

Presses record button 206. If the operator or not. If a microphone were provided,

wishes to hear what he previously recorded 60 would normally rest on a fork 308,

has, he moves the switch 205 into the test position. The fork 308 is around a pivot point 309 for the

REV, from which a downshift of the magnetic tape actuation of a contact 310/311 rotatable. the

in the central device 101 results. The switch 205 power supply of the in FIG. 3 device shown

is spring-loaded in its lower position REV - takes place from a power source via a plug 312

Voltage so that he is in his listening position L / 5 to 65 and lines 313 and 314. When the central

returns and the operator then the previously return station is equipped with a microphone

can listen to switched magnetic tape. The central of the contact 310/311 in series with the line 314

Device 101 contains one switched off as a sheet or strip in order to switch the system on or off.

7 8

"If a microphone is not provided, the band 304 could replace the induction of signals in the AbKontakt by an ON-OFF switch on the head 306. The signals become what is not shown. The mains voltage is amplified and on the output shaper 326 is applied, a converter rectifier element 315 is applied, which supplies its output signals to the loudspeaker 307, the working voltages to the remaining part of the system or to a microphone (not shown) in the event of a situation Dictation process or applied to one of the micro-motors 323, to which the various still to phone 123, 124 or 125 are applied,
descriptive bodies. A buzzer 328 is in front of the central station. The device shown in FIG. 3 has an indicator to allow certain states of the device to be a number of further control devices. Show some of these io. By the magnetic tape release lever 318 in control devices and their functions semer forward or release position are Toggle specify Konschließend: contacts 329/330 closed and the buzzer 328 er-A volume control 316 allows Rege- ™ &> to indicate that no magnetic tape in preparation of the volume during the return play; position is. . ,

a tuner 317 allows accurate ¹ S ^ ⁸ "*, a display necessary if the tracking of the magnetic head 306 with loading magnetic head 306 the end of the magnetic tape 304 erzug on the magnetic tape 304 when off ^re ^ · This wnd by emen Contact 331/332 taken and again. has been inserted or f ¹ ^ * which is closed if the magnetwhen another magnetic tape has been inserted; £ op ^{f reached} the right end of its movement. When a magnetic tape release lever 318 is pre- ²⁰ closing of this contact the Sumwärts is also moved, excited by the removal or insertion mer 328th _ ,,, """.
of the magnetic tape 304 to allow; ^ ^M Geschwmdigkeitssteuerhebel 333 is vorgeder magnetic head 306 can be applied to any point on the ^s ^ ⁿ ™ ^d enables the transfer person will eingesteUt to a magnetic tape 304 by a steUung the appropriate Übertragungsgeschwuidigkeit element 319 to a pitch control lever 320 ^{25 by the} movement of the lever to the right or pressed and the lever 320 to the left or ^na ™ ^h a ^ks · „„ „^. ". . ^ -, _Λ ■ is slid to the right as required; ^Dle foot control (g Fi. 1) 133 is em pedal Desein strip or tape 321 is in a holder * ^te f ^{n rei} side and a transmission operation used 322 for the optional through holes ^{desse. n} Imke side initiates a reversing operation, the dictator to certain arrange- 3 ° The reverse operation enables the operator to ^do the vorzu- Rich busbars for transmitting information S of the rotation of the magnetic tape 304 umzukehsehen. The strip 321 contains a number of ^{ren and the} magnetic head 306 to move to the left. Brands, 0, 10, and so presses to 140 for displaying, when the operator bezug- the transmission side or the relative SteUung of the magnetic head 306 ^right side of the pedal, the Kupplungslich of the magnetic tape is energized 304. ^{35 ma} S ^^ 325 and the clutch indented. Of the

Motor 323 is now driving via the drive device

Whenever the dictation button is pressed on any of the micro- the magnetic tape · 304 and the magnetic head 306. phone 123, 124 and 125 (Fig. 1) is pressed. When the operator takes his foot off the pedal, circuits of a recording relay 324 are kept closed by discharge capacitors and a clutch magnet 325 (Fig. 3). A circuit of the reversing magnet sen. This actuates the drive device 334 is closed and the excitation of the reversing tape and the magnetic tape are set in motion. The magnet 334 reverses the direction of the recording relay 324 causes the magnetic tape to rotate, as will be briefly described. Transmission of the signal from the microphone in the up- The motor 323 drives by means of its pulley calling station via the amplifier 305 to a 45 337 and the drive belt 336 a flywheel 335, output converter 326. The amplified signal is which has a conical axis 338 through a recording coil of the magnetic head to which a variable drive speed 306 is applied, and simultaneously with the energization of the recording relay 324 under the control of the aforementioned lever, an oscillator (not 333 is reached. A drive wheel 339 is shown in FIG. 4). The output of the oscillator 50 is operated in the following manner. With the coupling magnet, a pivot bearing 340 is connected to the erase winding of the magnetic head 306 325, to which a pivot bearing 340 is applied and generates an erase signal. Part of this a rocker 341 and a freely rotatable tension wheel 342 will also be attached across the recording nip. The freely rotating wheel 342 has one applied to provide a preload. When conical axis 343. When the clutch pulls the magnetic tape 304 at the erase gap and the magnet 325 and moves its armature 344 past the recording gap of the magnetic head 306, the freely rotating wheel 342 is used to erase the previously recorded information conical axis 338 and with and the new information is recorded. brought to the drive wheel 339, whereby the request, if desired, any of the previously drive wheels 339 is rotated. To play back information on the shaft of the recorded information, the drive wheel 339 is attached to a drive roller 345, test switch on the microphone in the test position REV on which the magnetic tape 304 runs. Moved when rotated, causing a switch-back magnet 327 and that of the roller 345, the magnetic tape 304 is driven. Clutch magnet 325 are energized. In addition to the drive roller 345, the overall effect is that the magnetic head 306 on a recording drive wheel 339 also moves back the rotation of the wheels 346 and the next track and the drive devices 65 347, of which the gear wheel 347 is actuated on a screw entrainment. When the magnetic tape 304 is attached to the spindle 348, with which the magnetic head 306 moves past the gap in the magnetic head 306, is coupled. When the screw spindle is rotated, the changes in the flux density in the magnetic head 306 act from left to right or

moved in the reverse direction across the magnetic tape 304.

To reverse the rotation of the capstan 345 and screw spindle 348, a magnet is used 334 excited, which thereby attracts its armature 349 and a switch arm 350 downwards or in the Direction of clockwise movement. When the switching arm 350 is rotated downwards, the he attached roller 351 between the free-running wheel 342 and the drive wheel 339 inevitably a ^ guided and thereby causes a reverse rotation of the transport roller 345 and the spindle 348.

The magnetic head 306 is rotatably mounted by means of the shaft 352 on a carriage 353 which is slidable seated on a shaft 354. The switch-back magnet and the associated device are also located on the carriage 353 attached. It is reminded that a downshift process is always initiated when the test switch 205 is set in the microphone in its test position. This creates a circuit across the Downshift solenoid 32 * 7 closed. When the downshift solenoid 327 is energized, the armature 355 and its extended arm 356 is rotated about a pin 357, and this rotation forces pivoting a pawl arm 358 and the associated guide pawl 359 as a unit a pivot 360. Movement of the guide pawl 359 forces a ratchet wheel 361 to rotate in the direction of clockwise movement by one tooth pitch. A pawl 362 is off the ratchet wheel 361 lifted off and falls into the next tooth gap of the ratchet wheel. Through this process, the Worm spindle 348 is rotated and magnetic head 306 is reversed one recording path, i. H. from right to left, moved.

To effect the punching of the strip 321, a solenoid 363 and a solenoid 364 are energized. These solenoids operate arms 365 and 366, which are hinged to one firmly seated on shaft 368 Plate 367 are attached. Adjacent the ends of two punches 370 and 371 is a punch actuator 369 attached to shaft 368. The energization of the solenoid 363 causes the Shaft 368 so that actuator 369 contacts punch 371 to make a hole in strip 321 effect, and energization of solenoid 364 causes shaft 368 to rotate in reverse Direction so that the actuator 369 contacts the punch 370 to make a letter punch in the strip 321 cause.

How the system works

The mode of operation of the system is described with reference to FIGS. 4 and 5, which, placed side by side, show the circuit diagram of the system. FIG. 4 shows parts of the circuit of the central device 101 and the transmission station 146 of FIG. 1, while FIG. Figure 5 shows the circuit in the three remote stations 120, 121, 122. These stations are shown in FIG. 5 labeled A, B and C. The circuit of the central device is shown within the dashed rectangle 401 in FIG. 4, and the circuit of the transmission station 146 is shown within the dashed line rectangle 402 in FIG. The transmission station 402 is assigned a headphone 403, which is the headphone 132 in FIG. 1 corresponds. In addition, a foot control 404 is assigned to the transmission station 402, which foot control 133 in FIG. 1 corresponds.

The selection and connection circuit of the. Stations A, B and C are shown in the three dashed rectangles 501, 502 and 503, respectively, in FIG. 5 and the microphone circuits 504, 505 and 506 correspond to those in FIG. 1 microphones 123, 124 and 125, respectively.

The various stations and components in the system are connected to one another by means of cable lines 405, 462 and 455 (FIG. 4) and 507, 547, 553, 582, 554 and 511 (FIG. 5). The cables comprise up to fourteen individual lines, which are generally numbered 1 to 14 throughout the entire system and some of which are also designated with the letter a, such as la, la , etc. The corresponding connection terminals are generally designated 1 to 14 in the same way. The various cables in the system are connected to one another via junction boxes 406, 508, 509 and 510. Additional remote stations could easily be connected using cable 511 and junction box 510.

The central device 401 is connected to a power source by means of a plug 407 (FIG. 4). When the switch 408 is closed, the mains voltage is applied to the transformer 409, to its Output terminals 410 and 411 of the amplifier (not shown here) of the central device are connected is. A voltage at another transformer output is rectified and via the Resistor 412 and terminals 413 and 414 delivered to the rest of the system. From the F i g. 4 it can be seen that terminal 414 is the grounded side of the system as indicated at 415 is. Different work potentials can be used in the facility, but in a typical one In the event of a load, there would be a potential of around 35 volts direct current at terminal 413. That central device 401 is equipped with various elements which are slightly different from the previous one Explanation are recognizable. These include:

Writing punch solenoid 416,
Downshift solenoid 417,
Rewind magnet 418,
Clutch magnet 419,
Recording relay 420,
Perforated pin solenoid 421,
Buzzer 422,
Sound head contact 423/424,
Magnetic tape contacts 425/426 and 425/427.

As shown in FIG. 4, the transmission station 402 is provided with a selector relay 428, which, when energized, actuates contacts 429 to 442 by the movement of contact rods 463 and 464. These contacts are used to connect the transfer station in the employment relationship with the central device 401 under the correct conditions. In detail, the contacts have the following functions: Contact pair 429/430 »hold«, contact pair 431/432 »block«, contact pair 433/434 »power supply«, Contact pair 435/436 "clutch switching", contact pair 437/438 "rewind", contact pair 439/440 »tone«, contact pair 441/442 »signaling«. A three-position operation control switch lever 443, which corresponds to switch 138 in FIG. 1, is for the "dictate" functions,

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»Transfer« and »Signaling« provided. The recording tape during the transfer switch lever 443 is provided with three three-position switch gears, so that the transmitter is connected to 444, 445 and 446, which are assigned the functions of a desired point on the recording tape "signal", "return" and "hold". for test reading purposes or for other reasons the 5 connected to the transfer station 402 can return. The rewind solenoid 418 is foot control includes a rewind switch 447 when the normally open contact is closed and a gear switch 448 which energizes the latter of two 452 which, as indicated by the dashed line, consists of two-position switches 449 and 450. 453 displayed, under the control of the clutch-A magnet 419 connected in parallel to the selector relay 428 is closed. It can be seen that lamp 451 lights up whenever this relay is energized so that several circuits start from contact 452, and thus indicates to the operator that the transmission via line 6 in cable 405 to terminal 6 is connected to the central Device 401 was connected to distribution box 406 and via line 6. Cable 462 to the contacts 437/438 and to the foot Wi from FIG. 5, the selector control switches 404 contain run. The rewind magnet and connection circuits 501, 502 and 503 in 15,418 are only under control of the rear of the remote stations A, B and C selector relay 512, reel switch 447 and game switch 448.

513 and 514, which have the same dialing functions. It is not necessary that stations A, B perform as relay 428 in the transmission and C to initiate a rewind function bestation 402. Relays 512, 513 and 514 are capable of serving so that the various cable lines are used to connect their stations to the center 6 and terminals 6 via the distribution box 401, and each of the relays 512, 513 and 406 for use in the selection

514, a signal lamp 515, 516 or 517 is connected in parallel to the circuit included in stations A, B and C to indicate when the corresponding station connections are available.

tion with the central device 401 for dictation purposes

was connected. ' _a5 initial conditions

The selector relays 512, 513 and 514 control the con. It is assumed that the switch 408 clocks the same, with the exception that they are closed (FIG. 4) and thus control various different functions in the system and circuits in the central device 401 with power therefore differ in some cases designated 30 feeds. When switch 408 is closed, there will be. So have z. B. the contacts 518 to 533 which also the drive motor of the device 401 (not geStation A shows the following functions: contact pair 518/519 shows) connected to the power network. This motor "hold", contact pair 520/521 "block", con - corresponds to the motor 323 in FIG. Contact pair 526/527 "Punch" 35 is correctly placed on the rollers in device 401 and (magnet 421), contact pair 528/529 "Coupling that therefore contacts 425/426 and 425/427 open", contact pair 530/531 "Punch «(Magnet net. There is also the magnetic head in the central 416), contact pair 532/533» Sound «. The corresponding device located in its extreme left position accordingly drawn contacts of station B and C is assumed, the contact 423/424 also have the same functions. 40 open. After the switch 408 is closed, it lights up

Each station A, B and C also contains a buzzer light 454 on to indicate that the central

mer 534, 535 or 536, which is used to switch the device on.

In the transfer station 402, the switch is to switch the operator to various states

To draw attention to the plant. Each station contains 443 set in its topmost position "dictation",

also a double contact request switch 45 In all distant stations A, B and C are the

ter, which are labeled 537, 538 and 539, respectively. Microphones 404, 405 and 406 at this point

In addition, each remote station A, B is still placed on its forks so that the

and C a hook switch unit 540, 541 or 542, associated bolts pressed and the switches 540, 541

each of which has a bolt such as and 542 in their normal open condition.

Bolt 543 of switch 540 contains. The bolt 50 is neither of the selector relays in any of the

543 is between an upper position which is energized in station A, B or C.

Fig. 5 is shown in phantom at 544, and one for purposes that will soon become apparent is shown in FIG

lower position shown in the drawing distribution box 510 a terminal 12 through a

movable. When the microphones are connected to a terminal 7 in their ent- connecting cable 544 to

speaking stations hung in their forks 55 to establish a resistance of the dialing circuit.

are, the associated hook switches are located. If another station through the cable 511

in the FIG. 5, in which it would be connected to the system, the plug-in

each of the switch units 540, 541 and 542 in the opening line 544 in the junction box 510 has been removed

are in good condition. To pass through a remote station and instead between terminals 7 and 12 in

To initiate a service request, the 60 assigned to the new station will be assigned to the distribution box

Microphone of this station to be removed from his fork,

men. This enables the upward movement of the to- _,. ,.

appropriate bolt in its uppermost position and thus operation call by a single station,

the closing of the hook switch contacts and the connection with the central device and dictation process

Initiation of the selection and connection process. 65 It is now assumed that an operator is in

One by the excitation of the magnet 418 one of the stations A, B or C indications for the

(Fig.4) initiated backwashing is normally recorded in the central device 401 and for the

wish to dictate only for the rapid and continued rewind of the subsequent transmission.

13 14

For example, it is assumed that the operator who wishes to dictate from line 1 in station B and therefore the cable 582 via contact 585/586, line la microphone 505 from the fork in the station - in cable 582 is closed , through contacts 566/567 and takes. The station B is connected in the following way 567/568, the lines 3, 4, and 4 a of the cable 582 with the central device 401. When disconnecting 5 and via the other connecting cables for picking up the microphone device 505 from its drawing relay 420 and to the coupling magnet 419 fork in station B , the bolt 545 moves in the central device 401. The excitement of being in his supreme position. In this position the downshift magnets 417 and the clutch contacts 562/548 and 549/550 are closed. magnets 419 for inspection purposes can by

With the assumed initial states, there is OK pressing or closing of contacts 569/570 a selector circuit for the excitation of the selector acts. The punching of a recording relay 513 of the station B, which following strip in the central device 401 is through the has: 413 (Fig. 4), line 1 in cable 405 to hole control contact 571 on microphone 505 clamped 1 in distribution box 406, line 1 in controls.

Cable 462, 431/432, line 12 in cable 462 to 15 When the end of the recording tape in front of terminal 12 in distribution box 406, line 12 is reached in the end of the dictation, a cable 455, terminal 6 in distribution box 508 is a circuit to operate the Summers 535 in (Fig. 5), line 6 in cable 547, Blockierungskon- control box 502 of station B in the following clock 520/521 (station A), line 12 in cable 547, closed way: from line 1 in Cable 582 terminal 12 in distribution box 508, line 12 in ao via the normally closed Summerkon cable 507, terminal 6 in distribution box 509, line 572/573, buzzer 535, line 574, device 6 in cable 582, blocking contact 551/552 now closed contact 587/588, the line 13 (station B), line 12 in the cable 582 to the terminal 12 of the cable 582 and via the lines 13 in the distribution box 509 and from here via the other connecting cables to the Distribution terminal 12 in cable 553 to terminal 6 in the 25 distribution box 456 and 457 in the central device 401 and via box 510. the strip end contact 523/524 to the earth terminal

From terminal 6 in junction box 510, the 415. The

If the circuit continues via line 6 in buzzer 422 in central device 401, it is excited.

Cable 554, the blocking contact 556/557 in the After the end of the dictation, the operator puts

Station C, line 12 in cable 554 to terminal 30 ner in remote station B, microphone 505

12 in the distribution box 510 and via the connecting cable back onto its fork. This opens the switch

544 to terminal 7 in this distribution box 510. is called 541, whereby the relay 513 is de-energized and the

From terminal 7 in distribution box 510, the system returns to its original state.

the circuit is continued via line 7 in the cable,

553 to terminal 7 in distribution box 509, via the 35 _ ,,., .. _,. . ,,,,

Line 7 in cable 582 of station B, the now simultaneous service call by more than one

closed contact 562/548, the line 559, the ^Statlon > selection and connection of a particular

Diode 560 and via line 561 to the dialing relay of ^{the calling} stations

513 and from here via line 5 in cable 582. It is evident that the dialing circuit is a

to terminal 5 in distribution box 509 and further 40 first row of connection paths via the block

via line 5 in cables 507, 455 and 405, kierungskontakt in each station, like the contacts

which is connected to terminals 5 in switch box 508 and for 431/432 in transmission station 402, the con-

406 are interconnected, to terminal 414 clocks 520/521 in station A, the contacts 551/552

in the central device 401. The relay 513 is in station B and the contacts 556/557 in the

ner excitation to the associated contacts, so that 45 station C to terminal 12 and via the connecting cable

includes the previously described excitation circuit through 544 to terminal 7 in junction box 510,

the opening of the blocking contact 551/552 under - A holding circuit for each previously excited selection

is broken. Before this contact is opened, the relay will be from the specified cable route from

however, a holding circuit for the relay 513 connects the individual lines 6 in the cabins to each

completely ^ which of the line 6 in the cable 50 station and the associated contacts, such as the con-

582 via contact 549/550 of the fork switch in bars 549/550 and 563/564 in station B

of station B (now closed), contact 563 / branches off.

564, the line 565 and via the same pre- The selector circuit further comprises a parallel mentioned return path to the terminal 414 in the central connected excitation circuit for the selector relay, device 401 runs. The holding effect occurs because 55 of the terminal 7 in the distribution box 510, the contact 563/564 closes before the contact. 509, 508 and 406 is opened via the lines 7 in the zuge-551/552. The lamp 516 lights up on the associated cables 554, 582, 547 and 462 branches off and to indicate that the station B is now connected to the central device 401 via the individual station switches and the diodes. By energizing the corresponding selector relay to their Er relay 513, the connection of station B 60 results in excitation.

with the central station 401 on the various with the arrangements described is a

contacts controlled by relay 513. The operator occupies the various stations at the same time

the remote station B can switch off all normal work for access to the central station,

with the central device 401 as if it were two or more stations at the same time

would be located directly on device 401. 65 Time to try to access the central device 401,

If z. B. the recording rod on the micro- the station closer to the device 401 has a

phon 505 is pressed, the contacts 566 / priority over each of the device 401 are further

567 and 567/568 closed and thus a power remote station.

15 16

The dialing sequence results from the interruption. This can happen in the short moment

of the holding circuit of the selector circuit, if kicked before the blocking contacts are opened

the blocking contacts in a preferred state.

tion can be opened. Since the parallel excitation part as soon as the blocking contact 520/521 assigned to the selector relay 512 in station A of the selector circuit follows in the series connection, the blocking contacts in a station are switched open, but it is the line 12 in the cable 547, which has priority over the working potentials from this part line 12 in cable 507 and line 6 in the cable of the circuit. The result of this pre-582 as well as the contacts 549/550 and 563/564 bypassed is that no other selector relay can be energized and thus there can be interrupted, because the parallel part of the selector circuit io no holding circuit for the selector relay 513 is open , and that each selector relay in stations also in station B. The selector relay 513 therefore drops immediately outside in the circuit, which at the same time means that the energization of the selector relay 512 of the energization of the selector relay is maintained in the preferred one. Station A has therefore been energized station, is not able to hold, access to the central device with priority over, because the serial part of the dialing current path at the previous station B achieved
station is interrupted. As a result of the blocking arrangement, it is not

It is evident that the priority rows allow two stations to access the

follow could also be so that in contrast to the central device 401 received.
Above the more distant station, e.g. B. the

Station C has priority over a more detailed 20 transmission process
going station, e.g. B * of station B.

To explain the foregoing principles As mentioned above, the switch 443 is now assumed to be attempting by the operators of the two (Fig. 4) stations A and B in the transmission station 402, more normally distant, at the same time, wisely in its upper (dictation) position. If not gain access to the central device 401. In 25 of the stations A, B or C use of this case, the station A has a priority or central recording device in the station 401 a preference over the station B. makes ₅ the operator of the transmission station

Assuming that the microphone 504 402 is performing a transmission operation by operating the

at the same time as the microphone 505 of switch 443 in its middle or "transmission" -

If his fork is removed, a circuit 30 position will be initiated. When the central facility

to excite the selector relay 512 in station A is not in use, this causes the momentary

closed, the excitation of the selector relay 428 borrowed from the terminal 12 iin distribution, whereby the

Box 406 is connected to device 401 via line 12 in cable 455 to the transmission station

Terminal 6 in distribution box 508, via line 6.

in the cable 547, via the contact 520/521, the line 35 If, however, the central facility 401 through

device 12 in the cable 547 to the terminal 12 in the distributor one of the remote dictation stations to claim

box 508 and via the corresponding link that is taken, the operator moves the transmission

Station-to-station selector excitation circuits, such as station 402 normally switch 443 in

previously described, and via the line 7 in the cable its lower or "signal" position, whereby the 547, the contact 589/577 in the fork switch 40 system is prepared so that the relay 428 in the

called 540 and via the diode 590 to the dial relay 512 transmission station is excited as soon as the dictation

the station A runs. The relay 5Ϊ3 in which is terminated by the currently connected station,

Station B is also, as previously described, and the buzzer in the central station is also activated

excites because a parallel excitation circuit is actuated for each to alert the transfer person exists, which as a result of the connecting line 544 between 45 sam, that the system is now available.

see the sockets 12 and 7 iöl distribution box 5lÖ the selector relay 428 in the transmission station 402

from the line 7 in the associated distribution is normally through a circuit from the

boxes 406, 508, 509 and 510 goes out. If both terminal 7 in distribution box 406 via line 7

Microphones 504 and 505 removed from their forks in cable 462 and switch device 455 removed are, the upper and the lower contact 50 is excited. However, when the system is in use and

their hook switch is closed and another station has access to the central device 401 for a short time

Time interval is an excitation potential both in the, this excitation circuit is under-

Line 7 of the cable 547 in station A also broke before the operator of the transfer station

in the line 7 of the cable 582 in station B in front of the switch 443 in its "transmission" - or act in order to reach both selector relays 512 and 513 moved. Once the dictation process

gen. The holding contacts of the selector relay in the status in one of the stations A, B or C has been terminated,

tion control boxes, such as contact 518/519 in the, the selector relay in this station drops out, and the

Control circuits 501, are designed so that they select circuit, starting from the various

before opening the associated Blockierungskon- Terminals 7 and distribution boxes 406, 508, 509 and clocks such as contact 520/521 close. For a 60 §10, it will take effect again. Assuming that

For a short moment, therefore, a holding circuit of the switch 443 is in the "transmission" position

for the selector relay 512 was moved by line 6 in the cable (middle position), the current

547 via the lower contact 578/579 of the fork circuit from line 7 in cable 462, starting from

switch 540 and via contact 518/519 to terminal 7 in distribution box 406, via the stand, and it is also possible that a holding current switch 445 the line 458 and the diode 459 to

circuit for the selector relay §13 from the line 6 in the selector relay 428 the excitation of this relay. In the

Cable 582 via the lower contact 549/550 of the embodiment shown has the transmission

Hook switch 541 and via the contact 563/564 station 402 a priority over other stations in

of the system, if at the same time access to the central Establishment is attempted. Once the relay 428 has been energized, it sets a holding circuit of terminal i in distribution box 406 via line 1 in cable 462, via group switch 446 s and contact 429/430. When the relay 420 goes into the fully energized state, the blocking contact becomes 431/432 opens, and this opens the selector circuits for the other stations the system interrupted.

The sequence of energizing relay 428 just described applies to an immediate selection or for a delay in setting switch 443 to its "transmit" or "signak" position the following selection of the transmission station. In the »Signak position, however, the buzzer 422 is energized, to give the transferee an audible indication that the equipment has become available is. This occurs when the relay 428 is energized as described above upon termination of a dictation process carried out by one of the stations in the following manner. A circuit is created from the terminal 414 via line 5 in cable 405, terminal 5 in distribution box 406, line 5 in cable 462, the contact 466 of the group switch 444, the line 460 from the switch 444 to the contact 441/442 of the Selector relay 428 and over the line 13 of the cable 462 to terminal 13 in the distribution box 406 and the Line 13 in cable 405 to buzzer 422. The operator then interrupts the circuit Buzzer 422 by moving switch 443 to its middle or "transmission" position and is then the transfer process after clamping a recording tape in the correct Continue position. As soon as the switch 443 is moved to the "transfer" position, there is parallel from each of the remote stations a signaling circuit for the notification of the transmission person give that the stations wish to dictate.

When the transmission station is connected to the central device 401, none of the remote stations will be able to get a connection or access to the device 401 until the operator of the transmission station has completed his transmission. In order to be able to check the status of the central device and to indicate that a dictation is desired, each remote station A ₁ B and C is provided with a corresponding switch 537, 538 and 539, respectively. The lines 5 in all cables and to all stations are connected to the terminal 414 (Fig. 4), at which the end potential is. The dictator in station A z. B. can indicate his desire to dictate by pressing the switch button 537. The top contact of switch 537 closes the excitation circuit via buzzer 534 of station A to line 1 in cable 547. In addition, the lower contact of switch 537 completes a circuit via line 14 in cable 547 to terminal 14 in junction box 508, line 14 in cable 455 to terminal 14 in junction box 406, via line 14 in cable 462 to center contact 467 of the Group switch 444 and via line 460 and contact 441/442 to line 13 and thus via this to buzzer 422 in central device 401.

The station A is allowed access to the central device 401 if the operator of the transmission station moves the switch 443 into the upper or into the dictation position at the end of the transmission process.

It is not essential that the transfer station 402 be included in the system. In some circumstances may be preferred ₅ the attachment to the hub 401 and the Diktierstationen A and B or only to the stations A and C ₁ B to be limited.

If a system with the central station 401 and only with the stations A and B is desired, the connecting line 544 would be arranged between the terminals 7 and 12 in the distribution box 509, as indicated in FIG. 5 by the dashed line. The wires in the cable 462 of the Übertragüngsstation 402 would then be disconnected from the different terminals in the junction box 406, the terminals of which would be 13 and 14 connected by a connecting cable 465 to allow the Bedienungssignalisierüng from the remote stations _s A connecting cable 581 would be between the terminals 1 and 6 can be provided in the distribution box 508 in order to bridge the blocking contact 431/432 and thus achieve continuity for the selection flow circuit.

If a system with a central station 401 and the stations A ₁ B and C ₁ but no transmission station is desired, the same line changes would be made with the exception that the connecting line 544 in the distribution box. is retained,

Claims (8)

Patent claims: 1. Device for the optional connection of two or more sounder stations to a central sound recording device, with the sounder stations associated coupling switching means for the production of the transmission of sound and Control signals allowing connection between the sounder stations and the central sound recording device and with safety switching means, which during the duration of the connection of a tone generator station to the recording device prevent other sounder stations from accessing the recording device and at the same time Calling several tone generator stations according to a given order, only one priority give, characterized in that the switch-on circuits of the coupling switching means (512, 513, 514) via blocking switches connected in series to form a priority chain (520 / 521, 551/552, 556/557), each of which is assigned to one of the coupling switching means and can be actuated by this to interrupt the priority chain, and that the coupling switching means associated access memory circuits 518/519, 563/564) are each fed from the point of the chain of precedence from which Blocking switch of the relevant tone generator station is on. 2. Device according to claim 1, characterized in that each dictation station Selector relay (512 to 514) is assigned, which in addition to the connection of the individual function lines making contacts actuates a blocking contact (520/521, 551/552, 556/557), that the blocking contacts of all stations are connected in series in front of the parallel ones Excitation circuits of the selector relays of all sta- 609 578/100 functions are switched and that the selector relays have holding circuits and the blocking contact a selector relay in the holding circuits of all subsequent selector relays in the priority chain lies. 3. Device according to one of claims 1 and 2, characterized in that in the priority chain in addition to the sounder stations, at least one sound pickup or in a corresponding manner Transfer station is switched. 4. Device according to one of claims 1 to 3, characterized in that the individual stations are assigned signaling means (534 to 536) which are prepared by the respective selector relay and by sensing switches (423 to 427) located in the recording device for the end of the recording capacity and / or the absence of a recording medium can be switched on. 5. Device according to one of claims 1 to 4, characterized in that each of the sound generator stations is provided with a signal switch (537 to 539) through which the signaling means of the sound pick-up or transmission station can be switched on as a sign of a desired dictation connection, provided that it is , this station is in access to the central recording device. 6. Device according to one of claims 1 to 5, characterized in that a three-position control switch (443 to 446) is _{present in the sound 3} "acceptance or transmission station, the first position of which makes the station ineffective makes, the second position of which brings the station into working condition and any incoming request signals for dictation connections can take effect and whose third position puts the station in the waiting state and the assigned Signaling means prepared, which when energized the selection relay of the station as a sign is switched on for the end of the dictation process. 7. Device according to one of claims 1 to 6, characterized in that the selection relays (512 to 514, 428) display means (515 to 517, 451) are connected in parallel to display access to the central recording device. 8. Device according to one of claims 1 to 7, characterized in that each station is assigned a distributor (508 to 510) provided with plug contacts, via which a parallel connection of the excitation circuits and the various functional lines to the central recording device and a series connection of the stations is possible with one another in any order, and that the last-ranked distributor marking the end of the priority chain receives bridging plug-in connections (544, 580, 581) . Considered publications:
British Patent No. 698 444. Legacy Patents Considered:
German Patent No. 1180 796. For this purpose 2 sheets of drawings 609 578/100 5.66 © Bundesdruckerei Berlin