DE522818C - Automatic writing lever adjustment and removal device for recording instruments - Google Patents

Description

Automatic lever adjustment and lifting device for recording instruments The invention relates to a device for the automatic activation and deactivation of the Writing levers of registration devices with hinged or removable housing cover, in which all interacting parts, especially the clockwork, the locking disk and the pen are arranged in the housing. To with these Registration devices to be able to change the registration disc, it is necessary to lift the pen off the recorder. There are devices now (German Patent 389 4.86), in which for this purpose the writing lever shaft axially displaceable against the action of a spring and after decoupling from the drives can be locked in the extreme position by rotation, so that the pen remains lifted. However, in order to bring the device back into operational readiness, it is necessary to remove the pen before closing the housing cover Bring your hand back to the writing position. However, this is often overlooked, and so it happens: it happens that the writing lever carrying the pen passes through the housing cover is bent or other damage to the device occurs.

On the other hand, the American patent r 285 9z9 Devices known in which this drawback is avoided in that the Lifting and pressing down the pen automatically when opening and closing of the housing cover. With these, however, the pen cannot be driven by the drive uncoupled and swiveled out to the side. When the subject of the invention the pen when opening the housing cover both automatically from the writing surface pressed as well as decoupled from the drive and when closing the housing cover automatically returned to the standby position. The pivoting back takes place of the writing lever, which is swiveled out by hand, automatically through appropriate guides. Although there are also devices known (German patent specification 26o 2oo) in which when opening the lid, the pen is lifted from the registration sheet at the same time and is decoupled from the drive; in these devices, however, is the pen in the hinged housing cover and not together with the registration sheet and Drive stored in the same part of the housing.

The invention is shown in the drawing in an exemplary embodiment, namely Fig. r shows a section through the device, Fig.2 shows a plan view on the writing lever, Fig. 3 and ¢ the guide curve for the writing lever support.

The cover 2 is mounted on the housing r in an articulated manner.

Inside the housing is the holder 3, which acts as a guide for the writing lever holder 4 serves. The latter wears one on his head Cone 5 and a threaded shaft 6 and a nut; through which the writing lever n is attached. This in turn carries the pen 9, which by the leaf spring io is constantly pressed down on the writing lever.

The writing lever support 4 is set down and in the sleeve i i of the lever 12 cooperating with the heart cam z 1. He will constantly pressed by the compression spring 13 in the direction of the arrow x, so far until the pin 14 is present on the bearing arm 15 of the holder 3.

At the middle paragraph of the writing lever support 4 is the guide pin 1 6, which slides into the slot ig when the writing lever 8 goes down, along the slope 17 of the holder attachment 20 and the slope 8 of the sleeve ii and couples the writing lever support 4 to the lever 12.

The mode of operation of the device is as follows If the cover 2 is closed, d. H. brought from position 1 to position II, the stop 22 meets the Knoll. of the threaded shaft 6 and presses the writing lever support 4. together with the writing lever 8 against the action of the spring 13 downward, the guide pin 16 on the Slope 17 and 18 slides along until it gets into the slot i9, whereby the Coupling between the heart cam lever i 2 and the Sclireibhebe18 is established. The writing lever18 then assumes position II (shown in dotted lines). In this Fall also the pen 9 stands on the recording disk 23, and the registration can start..

When opening the cover 2, the writing lever support 4 is released, and the spring 13 pushes it up again in the direction of the arrow x and lifts so that the pen is removed from the recording disk 23.

Claims (2)

PATENT CLAIMS i. Registration device, at. the registration sheet and writing lever are arranged in the same housing part and the writing lever at Open the housing cover by a spring parallel to yourself from the writing surface is pressed, characterized by a known coupling (11, 16) which the writing lever (8) connects to its drive when opening the housing cover automatically releases and automatically re-engages when the lid is closed. 2. Apparatus according to claim i, characterized by guides (16, 17, 1 8) which pivot the uncoupled and laterally pivoted writing lever back into the coupling position when the housing cover is closed.