DE246522C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

-M 246522, '- CLASS 21 a. GROUP

Call counters for telephone stations. Patented in the German Empire on December 7, 1910.

The aim of the invention is to provide a device which can keep track of the number of telephone calls of a subscriber who pays for the number of calls. According to the invention, when the receiver is picked up, the mechanical action of the ear hook advanced counter of the calling station when the speech connection is terminated by a pawl sitting on the armature of an electromagnet, which when Advancement of the ratchet wheel had come out of engagement with this, and which as a result of a when the interrogation pawl is plugged, the electromagnet is temporarily interrupted containing line stream engages again in the ratchet wheel, held in the advanced position. The counter on the calling party The call station remains in the advanced position while on the called call station the counter incremented when the handset was removed when the handset was attached is turned back to its original position because of the lines circuit in the Hanging off the receiver was already closed and was not temporary until it was reattached Has experienced interruption.

If a subscriber picks up the receiver to answer a call, then is the circuit is already complete, and it does not work while the receiver is in use uninterrupted. The handset is picked up on the calling station when it calling. As soon as his switch hook is lifted, a sign will appear on the switchboard in the office given, "and when the officer puts in a plug to answer the call, then the circuit is instantly interrupted, thereby affecting the device, which holds the registrar in its advanced position. These two types of Operations cover approximately 90 percent of calls or answers made. It however, there are certain other calls that require special device precautions of this kind 'must be taken. First the registrar must be made idle, in the event that the person called by the subscriber is busy. According to the present Invention this is effected by a strong current over the line line is sent. It can also happen from time to time that the subscriber calls someone / however receives a wrong connection and then does not ring the desired subscriber can. In such cases the call would be recorded and it is necessary to To provide means by which such a call from. canceled by the registrar can be, d. H. it should be possible to reset this by one or more numbers. This is possible according to the invention. Furthermore, devices to prevent counter incrementalization are to be found in those Cases in which the alarm clock rings at the station called and this the switch hook lifts while ringing the bell. In this case, the changes in the ringing current would be usually have the same effect as breaking the circuit so that incoming calls would be recorded.

while the registrar only keeps track of the total number of outbound calls target. Means are therefore provided through which an alternating or ringing current can pass prevents these calls from being recorded.

Fig. Ι is an elevation of a device according to of the invention with the front part of the housing removed.

ίο Fig. 2 is a detail view of the top one of the magnets. ■

Fig. 3 is a side view showing the housing in section.

Figure 4 is a perspective view showing the registrar and its connections and nearby parts in detail.

Figures 5, 7, 9 and 11 are partial views in their various successive positions; to illustrate the process.

Figs. 6, 8, 10 and 12 are side views of the same Parts in the same different positions as those of Figures 5, 7, 9 and 11 correspond.

The registrar 1 (Fig. 3 and 4) of the usual type has one with his at the rear end of his Housing arranged single wheels connected shaft 2, which rotate in a bearing 3 can. A sleeve 4 is rotatably arranged on the bearing sleeve 3 concentrically to the shaft 2, at one end one provided with two oppositely directed radial arms 6,7 Plate 5 is attached. A hinge 8 is attached to the arm 6 of the plate 5. The same thing is bent at right angles and extends down to the handset hook (Fig. 1). A spring 9 seeks to throw this joint 8 upwards and thereby reinforces the Power of the spring of the handset hook, which alone would not be enough to also the call recorder to advance. A plate 10 rotatably arranged outside the sleeve 4 can about an axis at right angles to the axis 2 of the sleeve 4 in the in the drawings (Fig. 3, 4, 6 and 12) and has protruding in opposite directions Arms 11 and 12. Arm 11 carries a pawl 13 and the arm 12 a pin 14. The arm 12 is connected to the arm 7 the plate 5 connected by a spring 15, which usually the arm 11 in a front and seeks to hold the arm 12 in a rearward position. On shaft 2 (Fig. 3 and 4) a ratchet wheel 16 is attached, on the outer surface of which a leather pack 17 sits and furthermore a loose disk sleeve 18 which is pressed against the pack by a short spring 19 will. An adjusting ring 20 is used to regulate the pressure of the spring 19. It is also seated on the shaft 2 a spring 21, its irine end on the loose sleeve 18 and its outer end is attached to a fixed point of the frame of the device. Through this arrangement it is achieved that during the rotational movement of the ratchet wheel 16 and the registration shaft 2 after front the loose sleeve 18 and rotated with it the inner end of the spring 21 and this thus is wound until the tension of the spring is sufficient to remove the friction between the Sleeve 18 and the leather packing 17 or the leather packing and the ratchet wheel 16 to overcome. The registration shaft 2 and its ratchet wheel 1.6 then move without the loose sleeve 18 forward. The friction between this sleeve and the ratchet wheel is adjusted so that that the spring 21 is always wound up enough to give the registrar 1 three or four numbers to move back if the friction were completely released.

The pawl 13 seated on the plate 10 is usually engaged with one of the teeth of the ratchet 16 and the pin 14 is unusual out of engagement with these teeth. During the swinging movement of the plate 10 to its axis on the sleeve 4, the pawl 13 comes out of engagement with the respective tooth and the pin 14 engages a tooth (Fig. 12). Both together form for that Ratchet wheel 16 an escapement so that each brought about by means described later whole oscillation of the plate 10 the ratchet wheel and the recorder 1 under the action the spring 21 perform a backward movement until the spring 21 is relaxed, what is the case when the registrar is moved back three or four numbers, what for all practical purposes suffice.

An electromagnet 22 is connected in the line line, which is equipped with three armatures (Fig. 1, 4 and 5) is provided. For the sake of easier differentiation, these are main, anterior, and posterior Are called anchors. The main anchor 23 sits on a horizontal pivot pin, and its upward movement is caused by an extension 24 of the adjacent pole of the magnet 22 limited. A rotatable stop 25 carrying a tooth 26 is provided on the upper surface of the main anchor 23 and also a friction spring 27, the easy turning of the part 25 about its axis prevented. Usually the tooth 26 is in the plane of the ratchet wheel 16 (Fig. 1,6); but it can be moved forward in two different ways in such a way that it is outside the plane of the ratchet wheel (Fig. 8, 10 and 12). The part 25 also carries a finger 28, which can come into engagement with a pin 29 extending from the sleeve 4. When the receiver hook is depressed, the pin 29 swings to the left (Figs. 1 and 4), and when here the tooth 26 is swung forward, the pin 29 comes with the

Finger 28 in engagement, so that thereby the part j

25 backwards and so the tooth 26 is moved to its usual position. ί

The front armature 30 is at the lower end of the electromagnet 22 (Fig. 1 to 3) on a j mounted on a horizontal pivot. Its forward movement is made possible by an extension 31 of the upper end of the magnetic core is limited. On the right end of the head banker 23 (Fig. 4) a lever 32 is rotatably mounted, one end of which in the path of a at the end of the front armature 30- seated pin 33 protrudes, so that this backwards • oscillation ' meets the end of the lever 32 and thereby the free end of the part 25 swings forward and thereby the tooth 26 out the path of the ratchet wheel 16 rotates.

The electromagnet 22 is of such strength, that with normal line current it does not attract any of its anchors; however, he is so strong that he acts as a holding magnet for the main anchor 23 when this is described below Way depressed. The front armature 30 is only attracted by alternating current.

When this flows through the solenoid coils, the magnetic tip 31 becomes the front one Search armature 30 to push back, and this is then pulled to the magnetic poles and remains there because of the greater power of these poles. Tooth 26 on part 25 becomes thereby swung forward out of the path of the ratchet wheel 16. ■ Both upon completion the downward movement of the handset hook and when the call is completed, part 25 returned to its normal position. The front armature 30 is used to supply an alternating current prevent a call from being recorded. When the handset hook is lifted is, the sleeve 4, the plate 10, the pawl 13 and are through the joint 8 the ratchet wheel 16 moves forward so. that registrar 1 advances one number. By the action of the ratchet wheel 16 on the tooth

26, the main armature 23 is depressed and by the electromagnet 22 in this position held by acting as a holding magnet until the current is interrupted. If the The civil servant inserts a plug to answer a call, the line stream becomes temporarily interrupted. During this time, the main anchor 23 moves upwards. He then holds the ratchet wheel 16 by the tooth 26 in its advanced position and switches the registration device 1 continues. This is the usual calling process. If, on the other hand, the handset is lifted to answer a call, then it takes place normally no line current interruption, so that the main armature 23 is depressed and the Tooth 26 below the ratchet 16 remains. If the handset hook at the end of the Conversation is depressed, the pawl 13 will turn the ratchet wheel 16 back to its initial position, so that registrar 1 did not count. However, when the handset hook is lifted is used to answer a call while the bell is ringing, then the main anchor 23 will naturally move upwards, and it would thereby advance the registry, if not at the same time as the upward movement of the main anchor 23 moves the front anchor 30 forward and he the tooth 26 on the part 25 would move forward out of the path of the ratchet wheel. if the receiver hook is therefore depressed again, the ratchet wheel is moved back.

A post 34 (Figures 3, 5 and 6) protrudes from the rear surface of the housing of the device and the flat surface provided at its end. provides a stop for a flat spring 35 which is attached to the plate 10 and protrudes from it. The normal position of the plate 10 is that in Figures 3; 5 ¹¹¹¹¹ I 6th shown, in which the tip of the spring 35 rests on the flat surface of the pin 34. The rear armature 36 is mounted on a horizontal axis and is usually held back by a spring. Its upper, free end can be swung forward under the action of the electromagnet 22 to the position shown in FIG. 8 and has two contact surfaces 37 and 38 located in different planes on its front side (FIG. 5). Surface 38 is the normal, forward surface of aft anchor 36, and surface 37 lies over the rear of the anchor. The rear armature 36 is arranged to be attracted only by a current much stronger than that used to attract the other armatures 23,30. Preferably, current of 10 volts is used for this purpose, as it is usually used in connection with telephone sets for putting the coin dispensing device into operation by self-tellers, in which the calls are effected by inserting coins. Since such telephones are connected to many telephone exchanges, every officer necessarily has the means to switch on a current of 110 volts in each of the lines to be monitored. This current can be used to rotate the armature 36.

When the plate 10 is in its normal position, the introduction of such a strong pulls Current armature 36 forward for the first time. Before this current is applied, the parts in the positions shown in Figs. 5 and 6 and move under the action of this Current into the positions shown in FIGS. 7 and 8. With this movement of the armature 36 comes the tip of the contact surface 37 in engagement with

Claims (1)

the spring 35 and pushes the same from the pin 34 into the position shown in FIG. Simultaneously if the lower part of the armature 36 hits the part 25 directly, it swings forward, pushes his tooth 26 out of the path of the ratchet wheel 16, thereby allowing the j Handset hook on his return move back the registrar so that the call is not effectively recorded. The sending of this strong current takes place either independently of or in connection with a "busy" signal, 'so that when the desired If the connection is not available, the officer can easily prevent the call from being recorded can. Upon a second or subsequent tightening of the rear anchor 36, the registrar may i, if desired, can easily be reduced to the following Way: According to Fig. 7 and 8, the pawl 13 on the plate 10 is still in engagement with the Ratchet wheel 16, and the pin 14 of the plate 10 is still out of engagement with it, although both are somewhat out of their normal positions have moved. If the rear armature 36 recedes when the strong current stops, the remaining parts all remain in their positions. Only the armature 36 pulls its contact surface 37 from under the free end of the spring 35, so that this is further down moved (Fig. 10). During a subsequent forward movement of the rear armature 36 its contact surface 38 comes into engagement with the spring 35 and moves it even further forward until all parts are identical to those shown in Figs. 11 and 12 Assume the position shown, in which the pawl 13 leave the ratchet wheel 16 and the pin 14 has caught a tooth of the same. As soon as the current flow is turned off, the falls Armature 36 back into the position shown in FIGS. 9 and 10. The pawl 13 and the Pin 14 thus act in the manner of an inhibition by which the ratchet wheel 16 is turned back will. This process can be repeated three or four times, whereby the registrar 1 can be reset by three or four numbers. When depressing the handset hook at the end of using the telephone set the plate 10 swings about the axis 2 of the sleeve 4, so that the spring 35 sufficiently over the pin 34 is lifted. The parts can now return to their normal or initial position Take up position, and at the same time, in the manner already described, the anchor part 25 moved back to its starting position. P α τ ε ν τ - A N s p R ü c H E: i. Call counter for telephone stations, characterized in that when the phone is picked up of the handset by mechanical action of the handset hook advanced counter (1) of the calling station on termination the speech connection through one on the armature (23) of an electromagnet (22) seated pawl (holding pawl 26), which when advancing the ratchet wheel (16) except Intervention with this had come, but as a result of one when plugging the interrogation handle occurring temporary interruption of the electromagnet (22) containing Line current engages again in the ratchet wheel in the advanced position is held while on the called station when hanging up the handset incremented counter when the handset was attached to its original position is turned back because the line circuit is already in place when the receiver is removed was closed and was not interrupted until it was reattached. .2. Call counter according to Claim 1, characterized characterized in that in order to prevent the counter (1) from progressing when removing the receiver while the alarm clock is sounding, the switching of the counter (1) effecting holding pawl (26) by the ringing current in a ineffective position by means of a second armature (30) of the counter electromagnet (22) is brought. 3. Call counter according to claim 1, characterized in that in order to enable the resetting of the already advanced counter (1) the counter electromagnet (22) is also equipped with a third armature (36) which responds only to particularly strong currents and which is attached to the retaining pawl (26) and a plate (10) acts so that the first movement of the armature the retaining pawl (26) also moves out of the path of the ratchet wheel (16) into an inoperative position moved, while the following movements of the armature by a pawl (13) seated on the plate (10) and a Trigger pin (14) to turn back the ratchet wheel. For this purpose 2 sheets of drawings.