SU45633A1 - Calling the selection key - Google Patents

Description

The proposed call selection key is intended for installation on telephone stations and control desks for selector circuits. Many of the currently-established calling dialing keys have a number of disadvantages, namely; the key cabinet requires a number of mechanisms, the call is made by inserting the key, the contacts in the keys are contaminated and distort the call. The key of the Bulat system requires to call a preliminary transfer of the arrow to the appropriate combination, and then to enter the key, which takes a lot of time. The proposed key according to the invention has a winding mechanism for several hundred calls, and the call itself is made by pressing a button without any prior manipulations.

In FIG. 1, 3 schematically show the key, and FIG. 2 is a current passing circuit. The key is based on the principle of collecting currents. For this purpose, an ebonite disk / with contacts located on it is taken from both sides. On the right side there are fourteen identical contacts and a fifteenth long contact, and on the left side there is a row of contacts 3, in the interval of contacts of the right side, and the contacts are left (193)

The edges are slightly wider than the gaps between the pins of the right side.

The disk is stationary, and the brush 4 slides over it, which passes the first contact first, and then passes the second contact of the right side and, not having time to pass it, touches the next contact of the left side, which is wider than the intervals between the contacts of the right side. Thus the brush passes through all the contacts. The current passage diagram (Fig. 2) shows the right and left side of the disk. In the normal position, the contacts of the right side are under current, the left side is without current.

In order to dial a certain combination, it is necessary to turn on the current in the contacts of the left side of the disk. Suppose you need to type a combination of 3-4-10; To do this, connect the left side (1) to the battery plus. If you need to type combinations 3-5-9, then on the left side we turn on the contacts /, 2 on the right side we turn off three contacts from the group of contacts indicated by the number 7. In FIG. 2 numbers 5, b indicate the contacts of the slats, numbers 7, 8-contacts of the buttons, and the number 9 contacts of the disk. Buttons and slats are shown in FIG. 3. on which the buttons are marked with the number 7 (9, and the bars with the number / 7. The buttons are located in three rows of nine. The buttons of the buttons of the first and third rows are curved. Each row has a common stopper bar 11. The first combinations of any call the strips themselves switch, the second combinations switch the button rods, the first combination of current packages is sent by the strips. Any button of the vertical row switches the same contacts with its rod due to the curvature of the rods of the first and third row. Referring lift up, and it releases the button under the action of the spring comes to the normal position.

Thanks to this design, there are only forty-four contacts for twenty-seven buttons, counting the contacts of the slats and the contacts of the rods themselves.

FIG. 2 shows that the five vertical rows of buttons will close the contacts of the left side of the disk. Four vertical rows of buttons will open the isolated pins on the right side of the disc. The locking bar of the first row (upper) closes two

contact on the battery plus, and on the disk, three 1-pin left side get a plus. The second row opens two contacts when the button is pressed.

The bottom plate closes the two contacts on the plus of the battery, as well as the top.

For a group or circular call, you can adjust any button.

The subject of the invention is a call selector key, distinguished by the use of a disc with contacts located on it on both sides, with the contacts of one side of the disc somewhat wider than the intervals between the contacts on the other side of the disc, on which contacts a brush can move, which overlaps both rows of contacts and is connected to a high-speed relay and power supply, to connect the same contacts in different combinations with the source, pushbutton switches are used, having between each other electrical and mechanical dependencies eskugo.