DE15216C - Innovations in air pressure lines for photographic and other purposes - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

CLASS B7: Photographs.

Patented in the German Empire on January 15, 1881.

For generating and transmitting movements over more or less great distances In recent times, air pressure is often used by placing the object to be moved through an air line with the starting point of the movement in connection and to the latter by one Compressor (air pear) creates air pressure that is propagated in the line, which at the end point the line brings about the desired movement through appropriate mechanisms.

In various cases it is desirable and necessary that this momentary movement can be fixed at any time, so that it is in the hands of the worker is to set this instantaneous effect for a certain time and then turn it off can. Up to now the momentary effect was extended to any time an equally long action, i.e. compression of the compressor, is necessary.

This constant squeezing of the compressor is tiring, because the attention is drawn of the worker is used during the entire operating time and inconvenient when working with the compressor for long periods of time. The purpose of the below The innovation described here is a fixation of such momentary effects on arbitrary ones Time without constantly squeezing the compressor, i.e. a longer effect by instantly squeezing the compressor, while at the same time an immediate cessation of this effect at any time is in the hands of the worker. For this purpose, a non-return valve is switched on in the air line Squeezing the compressor lifts and propagates the pressure in the line allowed. If the compression of the elastic air bulb stops, then the one in the falls asleep Air line existing greater pressure the check valve, whose construction any can be. It goes without saying that all known ones can be used instead of the check valve Locking devices with non-return are used and connected to the air line, without the essence of the invention, which is based on the inclusion of such a Closing device is based, changes. Specifically, one becomes flap valves, slide valves, rotary slide valves etc. can be used for this purpose.

In the drawing, A is the air bulb to which the closed valve chamber B is attached. In the latter there is the check valve a, which is always pressed onto its seat by spring b. Figures 2 and 3 show the same open and closed.

At the side of the valve chamber B a connection piece c is attached, in which the lever d is arranged to be easily movable. It sits airtight on the chamber through the rubber tube e and with its semicircular arm d ' includes the guide of the check valve. When this lever is turned, the arm d ' acts against the plate / valve and opens the same.

This turning of the lever and thus the opening of the valve can be effected by a light finger pressure on the lever d.

Fig. 7 shows a modification of this construction, in which instead of the check valve a cock serves as a conclusion.

Before the balloon A is compressed, the cock h 'must be opened; before you let go of the balloon A , you close the cock h 'with the other hand. If the intended effect is to cease, the cock is opened again and the balloon expands again due to its elasticity.

In Fig. 8 a ball valve is shown, k ' is the ball that sits in the tube r' , o ' are air openings.

These constructions, which cause the air to return after the pressure has ceased can prevent the compressor in all cases in which a permanent Effect is to be achieved with only a momentary action, for example in the case of the closure and opening the shutter flaps, the objective lenses for photographic purposes, furthermore be used in signaling devices and others.

Claims (2)

Patent Claims: 1. The use of a lever connected to the valve, for the purpose of opening the valve to be able to lift from the outside at any time. 2. The special way of attaching this lever in the wide nozzle in combination with the rubber seal c, whereby the rotatability of the lever is achieved with the simplest seal. For this purpose ι sheet of drawings.