DE1512690A1 - Answering device designed to be placed on a telephone set - Google Patents

Description

H.SCHROETFR.K.LEÜWANN

PAl ^ i LAWYERS

8 Munich; J ■ Luowskystr. 10 "/ '« λλΠ

Tel. 776 * 56 V · '«· ™ *) *

Ford Industries Inc. Portland, Oregon, USA

Answering device designed to be placed on a telephone set.

The present invention relates to an answering machine for a telephone which includes the unattended telephone can connect a call to a tape recorder or the like. In particular, the invention relates to a Spatially compact answering device, which instead of the microtelephone on the recording of the intended for the same Telephone set can be placed and which in turn intended to accommodate the microtelephones in such a position

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is that the microphone and the listener are the same through the answering machine be in communication with a tape recorder.

Known answering machines have several disadvantages. For some, the whole telephone set has to be in a certain way Position placed on the device "will be the same works properly. For other devices, the microtelephones must be lifted from the telephone set and placed on the one next to the telephone set standing device. Other known devices must be conductively connected to the telephone line. ™ With almost all known answering machines there is a certain disturbance in normal use of the telephone set.

A main object of the present invention is therefore to provide a novel telephone answering machine, which can be used in a simple and practical way with the telephone and which in its operating position causes minimal disruption to normal telephone use.

. Another object of the invention is to provide

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^r an answering machine which can be moved quickly and easily from one telephone set to the other.

Another object of the invention is an answering machine provide which can be easily installed without modifying the telephone set. The inventive The answering device is characterized in that when the microphone is off-hook it is on the receptacle for the same

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is attachable and in the attached operating position itself a Has recording for the microtelephone. In the device can transmission means be arranged, which are connected to the microphone and earpiece of the microtelephones, with none Conductive connection between the telephone line and the answering machine is required.

The device can preferably be designed in such a way that the microphone placed on the device can be used for normal telephone use can be easily picked up while> the answering device in the receptacle of the telephone set remains lying.

Means can be provided for imitating a telephone answer when the microphone is placed on the answering device lying on the telephone set and the microphone and the receiver of the microphone are connected to the connecting means of the answering device, the telephone set being put into an answering state by a call, in which the microtelephone remains in the same position on the answering device that it had assumed before the call. In the following the invention is explained in more detail with reference to the drawing.

1 shows a telephone set in plan view with the telephone set according to the invention placed in the operating position on the telephone set Answering machine and with the microphone lifted from the telephone and placed behind it.

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Fig. 2 shows a cross-section through & pt. In Fig. 1, presented answering device along line itW ^ * III ¹ Fig. 1 without

Microphone,. ·

Fig. 3 is a cross section according to line JkO in Fig. 2, Fig. 4 is a section according to Fig. 2 with parts

of the answering device is able to put the ftif % 4i on

To take a microtelephone}

Fig. 5 shows a partial section corresponding to a part of Fig. 4, in which parts of the answering device in a,

further operating position are shown with the microphone attached, and,

Fig. 6 shows a circuit diagram of a BejUkttfertungsgerätes according to Fig. 1-5.

In the drawing, a conventional ftlepj} atl | $ pftrat 10 with a receptacle 12 and a microphone 14 is shown. The microphone has in the usual way one eleven (urt / r and one microphone, which are generally designated 14a and 14b, while the handle is designated 14c. As can be seen in the pin fig. which serve in known Veise% xl & turning the telephone on lifting the Mikrotelephoni. the shift rails 16 are in the unloaded condition (Fig. 2), kept ie lifted Mikrotelephon in an upper Bndlage and can be brought into a lower end position according to FIG x 4.

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The response device 18 according to the invention is located in the operating position instead of the Mifcrotelephons 14 on the recording 12 of the telephone set. This response device comprises a rod-shaped housing 20 with upper and lower housing parts 20a and 20b are made of plastic and can have the shape shown · The housing parts are in the in the manner shown and can be connected by suitable means

The upper housing part 20a is designed so that it can be used for the ■ j Recording of the microphone 14 of the telephone set can be used. The upper part of the housing is behind at both ends Open at the top recesses 22 and 24 on the for receiving the microphone, or. of the microphone receiver.

For reasons explained later, the bottom of the recess 22 has several slot-shaped openings 26 (FIG. 1) and the recess 24 a round opening 28. In the middle part between the two recesses, the upper housing part has two pairs of protruding cams 30 arranged at a certain distance, which together with the two recesses mentioned ( serve as a holder or holder for the microphone.

The shape of the lower housing part 20b corresponds approximately to that of the upper housing part 20a. Also the lower one The housing part has recesses 32 and 34 which are open at the top at both of its ends. Between these two recesses the lower housing part has an opening 36 (FIG. 2).

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When the two housing parts according to Fig. 2 are combined are the recesses 32 and 34 are located directly under the recesses 22 and 24 of the upper housing part.

The response device verifies connecting means, hzv. electroacoustic transducers, namely a sound transmitter or loudspeaker and a sound receiver or microphone, which interact with the handset and microphone of the microtelephone when it is placed on the answering device.

^ In the illustrated embodiment, the response device veiet a loudspeaker 38, which is located under the slides 26 the bottom of the recess ^ 22 of the upper housing part is attached by suitable means. The sound or signal receiver comprises a pick-up coil 40 and one in FIG. 2 receiving circuit shown as block 42, which is connected to coil 40. The take-up spool is on top Housing part attached, with part of the coil through the Opening 28 of the recess 24 protrudes. The switching elements of the receiving circuit 42, which will be explained in detail later, '

'Are arranged in the recess 34 of the lower housing part.

In the recess 32 of the lower housing part under the loudspeaker 38, the switching elements indicated as block 44 of a circuit referred to below as the call circuit are arranged. This circuit is also discussed in more detail below. i ■ · - ■>. . ■ " -r *

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The figure "2 and 3" is inherent in the proposition 18 also has a mechanism for actuating the switching rods 16 of the telephone set. This mechanism incorporates a. < rerechiebbaren actuating rod 46 on. The actuating rod is provided with two opposing arms 46a and 4j6b (Fig. 2) which run in opposite directions in the longitudinal direction of the housing 20. The actuating rod also veist ^ svei opposite arms 46c and 46d (Fig. 3), which 'on opposite sides q.uer to the longitudinal direction of the house 20 pathways. The opening 36 has such a shape that the | Actuating rod 46 and its arms are rollably exposed on the underside of housing 20. The actuation rod 46 is normally on the underside of the answering device over the opening 36, whereby the arms 46a and 46b directly the switching rods 16 of the telephone set. A feather * couple 50 as well as a coil 48 with a Veicheieenkern 60 serve for lifting the actuating rod 46 into the upper end position shown in FIGS. 2 and 3.

The coil 48 is slightly above the actuation rod 46 arranged and is between two iron parts 52 and 54 fastened by velchen the U-shaped part 54 the coil in the

includes from the apparent in Fig. 2 Veise. These Veicheisträger are connected to each other and on the upper housing

part 20a attached. The parts 52 and 54 are with openings 52a and 54a, which are located in front of the upper and lower ends of the lumen of the coil. The core 60 has an im

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substantially cylindrical lower part 60a and one of the same Piece of existing, substantially conical upper part 60b. The core is connected to the actuating rod 64 by means of a screw and protrudes when the actuating rod is raised (Fig. 2) through the opening 54a upwards into the cavity of the coil 48. When the coil 48 is energized, the core

60 is drawn into the spool and is therefore used for lifting the operating rod 46.

The springs 50, which also serve to raise the actuating rod 46, are between the support 54 and the arms 46a and 46b of the operating rod arranged. These springs under tension act independently of the state of the coil 48 and always have the tendency to bring the actuating rod into the upper end position shown in FIGS to keep the same.

On the arm 46b is an upwardly protruding actuating finger 56 is provided which consists of one piece with the arm 46b. Directly above this finger is one attached to the carrier 54 Switching mechanism 58 arranged.

As can be seen in particular from FIG. 3, the mechanism also has an elongated, displaceable microphone rod 62, which is arranged transversely to the housing. This rod is roughly in the middle between the two recesses of the housing arranged. It has a practically flat upper part 62a and at opposite ends thereof downwardly protruding sleeves 62b and 62c. These pods

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protrude through matching openings 61 of the upper housing part 20a.

This rod, which can be actuated by the microphone, is supported on two perpendicular springs 64 and 66, which are arranged between the rod 62 and the arms 46c and 46d of the actuating rod 46. The upper ends of springs 64 and 66 protrude into sleeves 62b and 62c, while the lower ends of these springs are supported on pins 68 and 70 formed on arms 46c and 46d of the actuator rod. Springs 64 and 66 are stronger than springs 50. d

A downwardly projecting soft iron core 72 is attached to the upper part 62a of the rod 62. The outside of that core is substantially cylindrical and approximately the same diameter as the cylindrical base of the core 60. The core 72 has a conical recess 72a at the bottom, which is dimensioned to receive the conical upper part 60b of the core 60. That The lower end of the core 72 protrudes through the opening 73 in the upper housing part 20a and dips when the downward movement of the Rod 62 is inserted into coil 48 when the microtelephone is placed.

In Figs. 1 to 5, most of the electrical circuit elements of the answering device are in favor of a clear representation omitted. The answering machine, however, is in normal operation with a recording device for recording used by incoming messages over the telephone. Fig. 6 shows the switching means provided in the answering device including the receiving and calling circuits mentioned above, as well as the essential parts of the circuits of a

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Recording device used for recording and playback can be controlled.

In Fig. 6 are the receive and calling circuits mentioned above designated by 42 and 44. Likewise, the speaker, the coil and the switching mechanism with 38, 48, respectively. 58 designated. All of these essential components are surrounded by a dashed line 18, which indicates that the parts of the circuit enclosed by this line belong to the actual answering device.

6 shows the switching mechanism 58 has a pair of switches, namely, a normally closed switch 58a and a normally open switch 58b.

Are parts of a commercially available recording device shown outside of block 18 in FIG. 6. The recording device is shown schematically in FIG. 6 and is indicated at 74 designated. Any known device which can record and play back messages can be used. At 76 and two control relays are designated. Relay 76 has a coil 76a and a pair of normally open contacts 76b and 76c. Relay 78 has a coil 78a and a break contact 78b. With 80 and 82 are leads for the power supply of the circuit shown, which with a direct current source, not shown are connected.

The receiving circuit 42 of the actual answering device has a single-stage transistor amplifier with a

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Transistor 84 on. The emitter of this transistor is connected in parallel via a resistor 86 and a resistor 86 Capacitor 88 connected to ground. The collector is connected to the lead 80 via two resistors 90 and 92, as well as two Conductors 96 and 94 connected. A capacitor 97 connected to ground is connected between the two resistors 90 and 92. The base bias is generated by resistors 98 and 100, with resistor 98 between the collector and the base and resistor 100 is between the base and J ground.

The input signals come from the receiving coil 40, one end of which is connected to ground via a capacitor 102 to the base of transistor 84. The amplified output signals arrive from the collector of transistor 84 via conductor 104 to recorder 74.

The calling circuit 44 includes a calling coil 106, two Amplification transistors 108 and 110 as well as a relay 112 with a coil 112a and a normally open contact 112b. Of the The emitter of the transistor 108 is connected directly to ground, while its collector is connected through a resistor 114 and the above mentioned conductor 96 is connected to the lead 80. The base of transistor 108 is connected to the calling coil 106 via the Ground, and connected to the collector of transistor 108 via two series-connected resistors 116 and 118. A decoupling capacitor 120 is between ground and the connection

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connected between resistors 116 and 118.

The input signals arrive from the calling coil 106 the base of transistor 108. The amplified output signals pass from transistor 108 via a capacitor 124 to a Rectifier circuit with two diodes 126 and 128 and a filter capacitor 130.

The emitter of transistor 110 is connected directly to ground, while the base via a resistor 132 to connected to ground. The base is also with the connection connected between the diode 128 and the capacitor 130 of the rectifier circuit by a conductor 134, so that input signals to the base of transistor 110 pass through this conductor. The collector of transistor 110 is via the coil 112a of a relay 112, a conductor 136 and the aforementioned conductors 94 and 96 to the lead tied together.

The following describes how the answering device works in the event that the device is on the recording of the telephone device and that the microphone according to FIG. 4 is placed on the answering device> wherein the microphone 14a engages in the recess 22 and lies above the loudspeaker 38, while the listener 14b in the recess 24 engages and lies directly above the take-up reel 40. The handle 14b of the Mjkrotelephons lies on the rod 62 and presses the same into the lower end position shown in FIG. Since the springs 64 and 66 (Fig. 3) are stronger than the

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Springs 50, the depression of the rod 62 also causes the actuation rod 46 to be depressed into that shown in FIG. 4 lower layer, with the springs 50 being elongated somewhat and the springs 64 and 66 being compressed somewhat. the in this way depressed actuating rod protrudes into and partially through the opening 36 of the housing part 20b and their arms 46a and 46b depress the switch bars 16, just as they would if the microtelephone with the answering device removed would be hung up on the telephone set.

Both the position of the recording device just described and the answering device connected to the control relay are the relay contacts 76, 78, 112 and, those of the switching mechanism 58 initially in the position shown in FIG.

When a call is made, a current flows through the bell and generates the usual call signal. In general, this mechanism is mounted on the left side of the telephone set (viewed in Fig. 1) and therefore near the calling circuit with the calling coil 106 of the ' answering device placed on the telephone set. The alternating current flowing in the bell thus induces in of the calling coil 106 an AC voltage applied to the base of the Transistor 108 of the call circuit is transmitted. What is essential here is that none for the transmission of this signal conductive connection is required. The input signal is amplified in transistor 108 and goes to the rectifier

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circuit ^ so that a DC voltage across the filter capacitor 130 arises. When this voltage occurs, transistor 110 becomes conductive and its current flows through the coil 112a and energizes relay 112. By energizing relay 112, contact 112b is closed and completed a circuit vpn the leads 80 and 82 to the recorder 74 and to the control relay 76. The circuit for the recorder runs from the lead 80 through the Conductors 96, 94, 136 and a conductor 137, contact 112b, P conductors 138, 140 and 142, recorder 74 and a conductor 146 between the recorder and the Feed line 82 is located. The circuit for the relay 76 coincides in part with the circuit just described, which starting from the lead 80 with the conductor 142 begins and further includes relay coil 76a, conductor 148, contact 78b, and conductor 150, which connects contact 78b to return 82.

By energizing relay 76, its contacts 76b and 76c are closed. Through the contact 76b is a Completed holding circuit for relay 76 and the recorder 74 is connected to the lead 80 independently of the contact 112b via a circuit of that of of the lead 80 via a conductor 152, the contact 76b, a conductor 154 and the conductors 140 and 142 mentioned above. This holding circuit is necessary and important because the contact is made shortly after the call signal has ended

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112b is opened. By closing the contact 76c, the coil 48 of the answering device is excited, namely via a circuit of the lead 82 via a conductor 156, the contact 76c, two conductors 158 and 160, the contact 58a, two conductors 162 and 164, the coil 48, a conductor 168, the conductor 94 and the conductor connected to the lead 80 runs.

By exciting the coil 48, a magnetic field is generated in the same, which, the two cores or armatures 60 | and tries to pull 72 against each other. The core 72, however, cannot be moved because it is with the one resting on it Microtelephone 14 is connected against the top of the housing part 20a depressed rod 62. On the other hand, the Core 60 together with the actuating rod 46 carrying it against the action of the springs 64 and 66 in the areas shown in FIG. 5 Raised position shown, wherein the upper conical end of the core 60 engages in the conical recess of the core 72.

By lifting the operating rod, the switching rods 16 of the telephone set are released and are moved into the raised position, whereby the telephone ¹ -apparat is switched on in a known manner, such as when the microphone is lifted from the set in normal operation to answer a call. In the present case, however, the microtelephone remains in the position shown on the answering device. When the actuating rod is raised into the position shown in FIG. 5, the finger 56 also

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the switching mechanism 58 is actuated, whereby the switch 58a is opened and the switch 58b is closed. From Fig. 6 is it can be seen that after opening the switch 58a, the coil 48 is excited via the resistor 170, which is parallel to the circuit of conductor 160 of switch 58a and conductor 162. This ensures that the Coil 48 initially for lifting the core 62 and associated operating rod 46 with a stronger current is fed than later where the core 72 is merely in

* '· Must hold in a raised position. For this purpose, resistor 170 is initially short-circuited via conductors 160 and 162 and switch 58a, but this short-circuit is later removed in order to reduce the flow of current in the coil. By closing the switch 58b, a filter capacitor 172 is connected in parallel across the conductor 168, the switch 58b, a conductor 174 and the conductors 120 and 164 in the coil. This parallel connection of the capacitor 172 is used to convert alternating current components of the direct current supplied to the coil.

j ■ to derive current.

The recording device 74, which was switched on by closing the contact _i 76b, initially outputs a message, provided that such a message has been recorded, which message reaches the loudspeaker 38, which is connected via conductors 176 and 178 between the recording device and ground. Since the loudspeaker 38 is disposed under the bottom of the recess 22, the output message from the loudspeaker 38 is heard

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transmitted through the slots 126 to the microphone of the microphone. The message is thus transmitted from the microphone over the telephone line of the calling person. Usually the message is such that the calling person can post any desired message, and if so the initial one When the message is over, the recording device is switched over to record a possible message.

Assuming that the calling person wishes to leave some kind of message, this message arrives in the form of electrical signals Signals in the microphone receiver. This receiver lies in the recess 24 of the answering device in which the pick-up coil 40 protrudes, with corresponding signals being induced in the pick-up coil and to the base of the transistor 84 carry-overs. The signals are amplified and transmitted to recorder 74 via conductor 104.

Venn the recorded message of the calling person is completed, the relay 78 becomes the one with the recorder is connected by two conductors 180 and 182, excited for a short time. The energization of the relay 78 makes contact 78b temporarily opened, whereby the relay 76 is de-energized and the contacts 76b and 76d are opened. By opening of contact 76b, the holding circuit described above is interrupted and the recording device is switched off. By When the contact 76b is opened, the coil 48 is de-energized, whereupon the The actuating rod 46 is returned to the lower end position according to FIG. 4 by the springs 64 and 66 and with its arm 46a

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and 46b depress the switch rods 16 of the telephone set.

Thus the recording device, the answering device and the telephone apparatus are in the starting or standby state set back, with the only difference that in the recording device 74 now the received message is recorded and stored.

If you want the telephone set when the answering machine is on-hook to use in the usual way, the microphone is lifted. As can be seen from Fig. 2, the lift Springs 50 the actuating rod 46, together with the springs 64 and 66 when the microphone is lifted from the rod 62 and the rod 62 in the upper position shown in Fig. 2, so that the switching rods 16 of the telephone set in the upper layer and switch on the telephone. The call can then be made in the usual way by pressing the Dial. After the call has ended, the microphone 4 is placed on the answering machine and everyone Parts, in particular the switching rods 16 of the telephone set, return to the position shown in FIG.

From the above it can be seen that the inventive Answering machine can be made relatively small and practical in use. It doesn't require any Conductive connection with the telephone line and in no way interferes with normal use of the telephone. It will Microphone of the telephone set to the answering

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placed on the device, the microphone and the receiver of the microtelephones are in the vicinity of the transmission means of the Answering device, vomit the connection between the telephone lind the answering device is produced.

No modification of the telephone set is required, so that the answering device can be opened one after the other various telephone sets can be attached.

Although only an exemplary embodiment of the inventive Response device is shown and described, various other embodiments are possible within the scope of the invention and all such implementation possibilities should be within the scope of of the following claims.

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Claims (10)

PATENT CLAIMS: I)) To be placed on a telephone set with a Recording for a microphone which has a microphone and a handset, specific answering device, characterized in ', that it can be placed on the receptacle (12) for the same when the microtelephone (14) is lifted and in the attached position Operating position itself has a receptacle (22, 24) for the microtelphone '. 2) answering device according to claim 1, characterized in that it has transmission means (38, 40) which when the microtelephones are in the vicinity of the microphone (14a) and / or the receiver (14b) of the microtelephones. 3) answering device according to claim 2, characterized in that a signal transmitter, e.g. loudspeaker (38) in the Areas of the microphone (14a) of the microtelephone and a sound receiver, e.g. a coil (40) in the area of the handset (14b) of the microtelephones is arranged. 4) answering device according to claim 2, characterized in that the receptacle has a first and second recess (22, 24) for inserting the microphone (14a) or earpiece (14b) of the microtelephones. 5) answering device according to claim 4, characterized in that the said transmission means a Schal1- 909828/0831 transmitter (38) at the bottom of the first recess (22) to act on the microphone (14a) and a signal receiver (40) on the Bottom of the second recess (24) for the purpose of influencing have the handset (14b). 6) answering device according to claim 1, wherein der'Telephonapparat has at its receptacle for the microtelephone switching means (16), which in the unloaded state in a first Position protrude upwards and are depressed in another switching position, characterized in that actuating means (62, 64, 66, 46) are provided, which when on the Taking up the answering device with the microphone placed on it, bring the switching means (16) into the aforementioned other position. 7) answering device according to claim 6, characterized by Biasing means (50) for the actuation means (62, 64, 66, 46) which operate the actuation means when the microtelephone is lifted raise and let the switching means (16) go into their first-mentioned position. 8) answering device according to claim 7, characterized in that further controllable biasing means (48) for · the mentioned actuating means (62, 64, 66 ', 46) are provided, which when the microphone is attached, the actuating means to raise and thus the switching means (16) in the former ge To move 'without raising' the microtelephone must become. 90y828 / 0831 9) answering device according to claim 8, characterized in that further with the controllable biasing means (48) connected switching means (106, 108, 110, 112, 76) are provided, which in the event of an incoming call when on-hook Microphone are intended to energize the controllable biasing means (48). 10) Answering device according to claim 8, characterized in that the actuating means have a rod (46) on the underside of the device over which a coil (48) is arranged, against which the rod (46) can be attracted, and that springs (50 ) are provided for lifting the rod (46) independently of the spool . 909828/0831 Blank page