DE121300C - - Google Patents

Description

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IMPERIAL

PATENT OFFICE.

PATENT LETTERING

- M 121300 CLASS 21 a.

Patented in the German Empire on April 22nd, 1899.

The present invention relates to such call counters, in which a clockwork after Rotation of the inductor crank is released from the handset hook, and only at the calling taker.

The device is shown in Fig. 1 in front view and in Fig. 2 in a section from . 3 and 4 are side and front views of the telephone set / and serve to explain a contact located inside the same.

The device can be used at any telephone station, whatever type it may be, be attached. The arrangement described below is one of the common ones used as a basis.

In addition to the telephone set i with the lever h for hanging up the telephone and the inductor crank k , an electromagnet e is attached, which is connected to the circuit of a battery B. This circuit can be interrupted by a contact, which is located inside the box and is designed in such a way that when the crank k is turned and the remote receiver is attached at the same time, it closes the circuit of the battery mentioned, whereby the electromagnet is excited. An embodiment of this contact is shown in FIGS. On the axis of a pin Induktorkurbel k \ is mounted, which is pressed at a repeated throughout each revolution of the crank against the spring plate X _3, which thereby bears against the metal plate X. ₄ A pin y is attached to the remote receiver hook h which presses _{the spring x 2} against the spring X ₁ when the remote receiver is attached. The current of the battery B flows from one pole to the spring X ₄ , from there via the springs X ₃ X ₂ X ₁ and the electromagnet e to the other pole of the battery. With the remote receiver attached, the spring X ₁ is pressed on x ₂ and when the crank is turned the circuit of the battery B is closed as often as the pin \ of the crank axle x ₃ lies against X _4. On the other hand, when the handset is removed, the power cannot be closed because the contact X ₁ X _{2 is} interrupted.

In front of the electromagnet e, the armature a is movably arranged, which can be rotated in a _x and is actuated by the spring a. _{2 is} always pulled away from the iron core. In the rest state (Fig. 1) lever h _x engages with its nose n _x over the tapered end of the armature a \ this lever Ij ₁ is rotatably mounted in n ₂ and carries a spring K ₃ on its left end, onto which a piece of iron is screwed is. As can be seen from FIG. 1, this sits on a bolt b . If this bolt is moved upwards, it takes the lever / J ₁ with it upwards, with its right end _{snapping under the nose K 4 of} the spring f and thereby being held in the high position. The upward movement of the bolt b is now arranged by turning the

neten lever h. ₂ around its fulcrum / z ₃ causes which bolt b is attached. The rotation of the lever h. ₂ around h ₃ tries to effect the spiral spring s , but the lever cannot follow the course of this spring because it is blocked on its left arm by a nose spring J ₁ (FIGS. 1, 2 and 4). This j locking can be triggered by pressing button 0 of the bolt O ₁ (Fig. 4), whereby the nose releases the lever. A wire g (locking lever), bent twice at right angles, is attached to lever h.-, \ , which joins the movement of lever Zz ₂ . A wire is mounted i.e. to the remote handset hook which is screwed h with its lower end bent at right angles to the remote handset hook. To this wire d , two arms ά _λ and d _{% are} riveted (Fig. 1 and 2). The arm d. ₂ has the purpose h during traction of the remote handset hook to push back the spring f, where its nose _i n the lever Zi ₁ läfst slide out among themselves, when the latter is in the high position. The second arm ^ ₁ is intended, under certain circumstances, to prevent the lever h from going up when the receiver is unhooked. As soon as the double lever Zj ₄ 1ι _Ί , whose fulcrum is in h ₅ , while / i _{6 represents} a hinge for the arm Zz ₇ guided between two pins S ₁ S ₁ , is pulled backwards by the spiral spring S ₂ , its bottom comes up To stand so far above d ₁ at the end that an upward movement of d _y and thus also of lever h is made impossible. The double lever h _i Zi ₇ can only make this movement if the armature a is the train of its spring a. _{2 is} followed, ie when the electromagnet e is not energized and lever It ₁ is in its upper position. The arm d ₁ is then intended to hold the locking lever c, _{which is rotatable about C 1} and which is connected to the unrest or the pendulum of a clock, in the position shown in FIG.

In this situation the

Locking lever c also held by the locking lever g , which is attached to the lever / z ₂ located behind the mounting board (Fig. Ι and 2).

Having now described the most important components of the arrangement and their effect are, the operation of the entire device will be explained in the following.

After the participant has been called, he hangs up the receiver as usual; lever h goes up and turns on the microphone in place of the bell in a known manner. If then, with lever h , the locking lever d ₁ of lever c has also gone up, lever c still remains locked, namely by locking lever g, so that the starting of the clock and the counting of the conversation time for the called subscriber is prevented . When the conversation is over, the participant hangs the receiver on the hook again h.

If the participant wants to call himself, the process is as follows:

A locking device w is _{attached to the lever / z 2} located behind the mounting board, which makes it impossible to turn the crank. Only by pressing button 0 is lever K ₂ turned and the lock triggered. When turning the lever h. _z took this Zz _{1 up} with him, the right end of It ₁ snapping under the nose rc _{4 of} the spring f. Now anchor α can the course of its spring a. ₂ and falls to the left, pushing its angular bulge against bolt b of the (now upright) lever h. ₂ and holds him in this position. The forward movement of the armature under the following a train of the spiral spring s. ₂ of the double lever Zz ₄ h _7. The lower end of this lever comes to stand over the arm d _{of the wire d in such a way that an upward movement of d and thus also of lever h is made impossible. There would be no point in hanging up the receiver because, as mentioned above, h cannot go up.

When the crank is turned, the contact inside the housing is closed, the electromagnet e is excited and attracts the armature α , whereby the double lever Zz ₄ /? ₇ is pushed backwards to the right. This releases the arm ^ ₁ and thus the suspension lever / 7. Since the crank contact only closes while the crank is being turned, the battery current is opened when the crank is stopped and the electromagnet e is non-magnetic. Therefore, the armature α is immediately back to the train of its spring a. _{Follow 2} and fall forward. Double lever Zz ₄ h ₇ would follow it if it were not held in its position by pin t and barbs ρ. If the participant now removes the receiver, h and d go up, d pushing the spring / backwards; It ₁ slides out from under the nose? z ₄ and falls back into its starting position. While the participant picked up the receiver, the unrest or the pendulum of the counter was also released by means of the locking lever c and the clock started. When the conversation is over, the participant hangs up the receiver again, whereby the unrest or the pendulum of the clock is blocked. The participant then rings the bell, with the various levers in their initial resp. Be brought back to the rest position. The anchor is attached when cranking

pulled and snapped with its tapered end under the nose K _{1 of} the lever Zi ₁ . Finally, the participant returns lever K ₂ to its starting position by pressing the locking device w upwards.

Claims (1)

Patent claim: Conversation time counter with a clockwork released only by the calling subscriber after turning the inductor crank from the handset hook, characterized by a double locking of the escapement lever (c) of the clockwork, the first of which is formed by the pin (g) when the inductor crank is released by unlocking the lower Spring-loaded lever (h.-,) is released, while the release of the second lock, which is effected by the pin (d _x ) influenced by the handset hook, is initially prevented by the lever (hj, which is pushed forward when the inductor crank is released, but then by the excitation of the electromagnet (e), which occurs when the inductor crank is turned, which makes the lever (h ^ J snap back), is made possible and is then effected in a known manner when the telephone is lifted. For this purpose ι sheet of drawings.