DE418665C - Electromagnetic speaking machine - Google Patents

Description

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The invention relates to an electromagnetic speaking machine based on the Poulsen principle, in which the dictation is spoken on a wire, while the dictation is recorded and played back by a wire spool is unwound and wound onto a second wire spool. It is known to implement such dictation machines in such a way that the. Operation is entirely electrical. It is also known to make the execution so that both mechanically acting devices and electrically acting devices are required for "operation.

The invention particularly relates to the latter type, and it comes down to it that a common switch on the one hand mechanically turns the jahtspulen in or out of operational readiness, on the other hand the drive by electrical means the wire spools and the switching on and off of the speech battery. It deals In the invention, therefore, to a certain extent, the fact that one and the same member both brings mechanically acting devices as well as electrically acting devices ready for operation.

An example embodiment of the invention is shown schematically in the drawing shown.

In the illustrated embodiment, the wire spools A ₁ Ä are carried by the vertical shafts B ₁ B ' , which are correspondingly supported at C, C and D, D'. The speaking head E _1, through which the speaking wire F, which can be unwound from one wire spool and wound onto the other wire spool, passes, lies between the two wire spools.

Belt pulleys G ₁ & Längsversdhiabhar are attached to the wire spool shafts B, B ' so that they can be brought into or out of engagement with clutch disks L, U _1, which sit firmly on the shafts B ₁ B'. For the purposes of the longitudinal displacement of the rollers G, O ' , levers N ₁ N ' mounted at M ₁ M ' are provided, which are connected to the rollers G ₁ G' in such a way that these rollers rotate when the lever N ₁ N 'is deflected the bearings M ₁ M 'are coupled or uncoupled with the coupling disks L ₁ U.

With the levers N, / V 'each a Taiste O, O' is connected, which is mounted on the machine frame at P, P 'so as to be longitudinally displaceable. A spring Q ₁ Q ' tends to rotate the lever N, / V' in such a way that the rollers G ₁ G ' are coupled to the clutch disks L ₁ U. To secure it in the uncoupled position, a spring-loaded latch R ₁ R 'acts on the button,

In the drawing, the drive motor S is also shown schematically, in whose circuit the current contacts T ₁ T and

U, U 'are switched on. Furthermore, power contact strips V, V, and W, W are also illustrated, which are used to switch the speech battery on and off. When the machine is out of operation, on the one hand the two wire spools A, A 'are coupled, on the other hand the drive motor and the speech battery are switched off. This is made possible in that

ίο by moving the button O ₁ O ' on the one hand the two levers N, N ^{r are} moved upwards and thereby the drive rollers G, G' are coupled to the coupling disks L, L ' , on the other hand the buttons O, O' cause their longitudinal displacement the interruption of the circuit for the drive motor and the interruption of the circuit for the speech battery.

If, for example, the speaking wire F is to be unwound from the wire spool A and wound onto the other wire spool A ' for the operation of the machine, then the clutch G, L for the wire spool A is released by shifting the key O and also the circuit for the drive motor and the circuit for the speech battery are closed. As a result of the associated activation of the drive motor, the roller G ¹ and with it the wire spool A ' are now driven, which now unwind the speaking wire F from the loosely rotating wire spool A.

The key O thus on the one hand mechanically puts the wire spools in or out of operational readiness and on the other hand controls the drive of the spools and the switching on and off of the speech battery electrically.

Claims (3)

Patent Claims: 1. Electromagnetic speaking machine with a speaking wire that can be unwound from a coil and wound onto another coil, characterized by a common switch (N, O, T, U, V, W) which, on the one hand, mechanically controls the wire coils (A, A ') in or out of standby mode and, on the other hand, electrically controls the drive of the wire spools and the switching on and off of the speech battery. 2. Electromagnetic speaking machine according to claim i, characterized in that a key (O, O ') secured in its end positions is on the one hand necessarily connected to a clutch (L, L') and on the other hand as a switching element for the circuit of an electric drive motor (S) and the circuit of the talk battery is formed. 3. Electromagnetic speaking machine according to claim 1 and 2, characterized in that the key (O, 0 ') durchj an intermediate member, lever. (N, N ') with the coupling (L, L') of the wire spool (A, A ') so connected and mounted with respect to an electrical switching device (T, U, V, W) in such a way that it is in one end position The drive roller (G, G ') couples with the wire reel (A, A') and interrupts the circuit for the drive motor (S) and the speech battery and in the other position releases the coupling between the drive roller and the wire reel and closes those circuits.