DE446551C - Dialing device with two different dials that can only be operated by a finger disc - Google Patents

Description

GERMAN EMPIRE

ISSUED ON
JULY 5, 1927

REICH'S PATENT OFFICE

PATENT LETTERING

CLASS 21 a ³ GROUP

G 64122 VHI / sra ³ Date of the announcement of the grant of the patent: June 16, 192η.

W. Gurlt G.m.b.H. in Berlin.

Dialing device with two different ones, just by a finger washer to be operated dials.

Patented in the German Empire on April 21, 1925.

The present device is intended to alternately use the To operate the electoral body for official traffic and that for domestic traffic. The official electoral system is intended for a self-connecting exchange, the house dialing mechanism for a line dialer with or without a secret circuit. Authoritative is that the public voter system is only added and switched on when required without much effort can be.

Claims (4)

The drawing shows a section through such a device on telephone sets. A is the work for official, B the work for home traffic. The plate ι has a socket 2 in which the axis 3 of the finger washer 4 can rotate. The axis 3 is mounted backwards in the bracket 6 and prevented from falling out ^{by a pin 3 a.} The ratchet wheel 7, on which the contact arms 8, 9 of the line selector and insulation 10 are held by a disk 11, rotates loosely on the axis 3. The selector arms 8, 9 slide over a line selector contact row 28. In addition, a second disc 12 provided with a pin or slot is attached to disc 11. The ratchet wheel 7 is held in the respective working position by a releasable pawl and returned to the rest position by a spiral spring 17. A driver plate 13 is also arranged displaceably on the axis 3, but is connected to it by tongue and groove 16. This drive plate 13 has two pins 14, 15, and depending on their position, either the pin 14 engages with a slot in the disc 23 of the selector mechanism A or the pin 15 engages with the disc 12 by engaging at the rear in front of the pin of the same. The drive plate 13 is pushed by a lever 18 and 19 to one side or the other. Advantageously, a spring 21 pulls the lever 18 together with the disk 13 to Plant A, so that a choice in official traffic can be made without any special adjustment of the drive disk 13. If, on the other hand, the switch 20 is actuated, the lever 19, 18 is thrown and thereby the drive plate 13 with pin 15 is detached from plant A and coupled to plant B and reconnected to plant A after use. The rest position is designated by 22. What is shown, however, is the working position of the levers 18, 19, which is brought about by flipping the switch 20 so that the driver device is coupled to the work B. If the drive plate 13 is in engagement with plant A (plate 23), a locking lever 24 is advantageously placed automatically through the plate 13 in front of the plate 12, so that the house work B is blocked when selecting with A. The alternating coupling can also be provided the other way round, in that the drive plate 13 is coupled to plant B at rest, but is turned to A when the lever (20) is actuated.
The official body A is screwed or otherwise attached to pillars 25; In any case, it is completely independent of Plant B and can therefore only be set up and switched on if necessary (reorganization of the office). If A is not needed, lever 18 with disk 13 will be held in the position according to B in any way. If the disk 12 has only one pin, the finger disk 4 is provided with a return spring 5. If 12 has a slot, the spring 5 is not required. In the first case, it rushes Finger disc 4 back with every election, in the latter case it only runs back slowly when choosing an office, while it opens when choosing a house the selected number remains. The finger washer 4 can have a movable stop 26, which via a transmission 27 operated a call switch for the purpose of calling the house. The housing 29,30 can have any shape. From the shape of the same result also the shapes of the levers 18, 19 and of the switch 20. The WerkS can also have any other design; so can the individual Coupling parts have other shapes. Pa TJi N ' SiMUj CU ic: ι. Selector device with two different dials, which can only be operated by a finger disk, characterized in that a driver device (13, 14, 15) is attached to the finger disk axis (3), by means of which the axis alternates with the dial mechanism (A) for official traffic or with to be coupled to the dial (B) for house traffic. 2. Selection device according to claim 1, characterized in that the driver device (13, 14, 15) is coupled at rest to the plant (A) for official traffic, but when a switch (20) is actuated, it engages the plant (B) for home traffic or vice versa. 3. Selection device according to claim 1 and 2, characterized in that the selection set (B, 7 to 12) is automatically blocked by a lever (24) when the axis (3) is coupled to the other plant (A). 4. Dialing device according to claim 1 to 3, characterized in that the necessary facilities (corresponding dimensioning of the housing, supports 25) are provided in dialing devices which are currently only equipped with the works (B) for domestic traffic If necessary to enable the subsequent installation of the exchange dialing mechanism (A) without further ado. For this purpose ι sheet of drawings.