DE453166C - Arrangement of electrical apparatus with progressive waves, e.g. Type printers, dialers, recording machines, typewriters or calculating machines - Google Patents

Description

GERMAN EMPIRE

ISSUED ON
NO VEMBER 30, 1927

REICH PATENT OFFICE

PATENT LETTERING

CLASS 21 ai GROUP

Siemens & Halske Akt-Ges. in Berlin-Siemensstadt *).

Patented in the German Empire on May 18, 1926.

The invention relates to a device on electrical apparatus progressive waves. It is especially intended for electrical type printers, in which the type wheel is set in rotation by a stepping mechanism and after the required position has been reached the print hammer hits the paper against the type. This has to be a Blurring the mark to avoid the print hammer falling off before the character wheel its rotation begins again to set the next type. In known embodiments a star wheel is connected to the type radach.se, which is on a with a decelerated Return movement working lever, which acts on a contact in the circuit of the Keeps the pressure magnet open as long as the setting of the type wheel continues.

In order to achieve the timely dropping of the print hammer, there is a second one Contact point in the pressure circuit provided by a delay relay is controlled. This facility does not sufficiently fulfill the intended purpose. It is also felt to be a disadvantage that the delay relay has its own circuit requires.

According to the invention, these disadvantages are eliminated in that the second, the Timely interruption of the excitation circuit controlling contact in the circuit of the Pressure or other magnet mechanically from the type wheel or otherwise advanced Wave controlled and at the same time influenced by the pressure lever or otherwise used armature of the magnet is that the contact is interrupted at the same time when the tightening movement, so that at the moment of tightening the excitation of the magnet disappears.

In the drawing, an embodiment of the type printer is shown, from which the switching of the pressure circuit and the arrangement of the delay relay replacing latch device can be seen.

On the type wheel axle 1 sits a star wheel 7 with a type corresponding to the type number Number of teeth. The notch lever 9 mounted in 8 is by the spring 10 with the Notch rollers 11 pressed into the gaps between the teeth of the star wheel 7 and thereby sets the Positions of the character wheel axis 1 fixed. Against the detent lever 9 lies under the influence of the spring 13, the delay lever 14 provided with an extension 12, which in FIG is stored. This closes contact 16 in the rest position.

In the case of a step-by-step switch

*) The patent seeker stated as the inventor:

Dipl.-Ing. HorstRassow in Berlin-Wilmersdorf.

following ßrehung the character wheel axis ι and of the star wheel 7, the detent lever 9 is pushed away from the star wheel 7 with every step and thus at the same time also the lever 14, the contact 16 of which opens. As a result of his, Inertia and the low tensile force of the spring 13 makes the lever 14 a larger ^ limited by the stop 17 Aush beat as the lever 9, and before the fall the contact 16 is closed, the lever 9 receives a new push, which is transfers to the lever 14. It only closes when the type wheel axle comes to a standstill Contact 16.

Also the angle lever 19 mounted in 18 is pressed by a spring 20 with its roller 21 against the star wheel 7, is but as soon as it has been pushed out by the rotation of the star wheel, by the The nose of the angle lever 22, which is mounted in FIG. 23 and is placed against the stop 25 by the spring 24, latched. Of the Angle lever 19 affects a contact 26, which is only in the latched state of the lever closed is. The pressure lever 2 carries a plunger 27 which, when the pressure magnet responds 4 abuts against the free angle arm of the lever 22 and thereby releases it of the lever 19 caused. ''

The pressure circuit goes when both contact points 16 and 26 are closed, from positive pole via the contact lever 14, the contact 16, the line 28, the contact 26, the line 29, the pressure magnet 4 to the negative pole. The is in the rest position Contact 16 closed, but contact 26 open. As soon as the character wheel axle 1 and rotate the star wheel 7, the lever 19 is latched by the lever 22 and the contact

* o 26 closed. During the period of rotation, the contact 16 is opened and closed only after the axis has come to a standstill. The pressure circuit is thus closed, and the pressure magnet 4 attracts its armature, the pressure lever 2, which the relevant The characters of the type wheel 5 are printed on the paper strip 6. It comes across the plunger 27 against the angle lever 22. The latched lever 19 is hereby free and contact 26 is open. The pressure circuit is therefore interrupted again, and the Pressure lever 2 is pulled against stop 31 by its spring 30.

Claims (3)

Patent claims: i. Arrangement of electrical appa-. guess with incrementally advanced Waves such as B. type printers, voters, recording machines, typewriters or calculating machines etc., with two contact points in the circuit of an electromagnet, one of which is advanced by one of the Wave-controlled lever with delayed return movement is influenced in such a way that it stops when the Adjustment movement closes the excitation circuit of the magnet, while the other contact point opens it in the rest position holds, characterized in that the second contact point (26) is closed mechanically by the movement of the shaft (1) and is opened by the pulling movement · of the electromagnetic armature (2). 2. Arrangement according to claim 1, characterized in that the closing of the Contact point (26) by means of a star wheel (7) arranged on the shaft (1) he follows. 3. Arrangement according to claim 2, characterized in that a contact closure mediating lever (19) during the closing movement to another Lever (22) latches, which moves out of latching position when the solenoid armature (2) is pulled is excavated. 1 sheet of drawings.