DE34001C - Remote shut-off device for gas taps - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

CLASS 26: Gas preparation and lighting.

Patented in the German Empire on April 3, 1885.

The present shut-off device for gas meters and taps is based on experience it emerged that it was not only useful, but necessary, that the gas meter was one Building or even a single dwelling from a location other than the place of installation from being able to shut off. Such an arrangement would not only apply in the case of conflagrations and fires, where the gas meter is always can easily become inaccessible, offer great advantages, but also under ordinary ones Circumstances of great convenience and usefulness by starting from a habitual abode, e.g. B. the Bedroom, lock the gas meter in the basement and cancel again respectively. can control its state.

A device serving this purpose is shown in the accompanying drawing, which is set into action with the aid of an electric current.

The device is particularly recommended for public buildings, such as theaters, and will expediently the arrangement was made in such a way that the cordon off from different places can be effected by simply depressing a button. To further the dangers To prevent the suddenly occurring eclipse, you can use the cordon causing electric current to light electric light bulbs at the same time use.

A is the key of the main cock, and it is constructed longer than usual, so that it forms a powerful lever arm. At its free end it bears a weight B, which weighs 5 kg more than is necessary to move the lever if you put it on yourself. The arrangement is such that the lever can only perform a quarter turn. When the cock is closed, it assumes the lower dotted position. When the cock is opened, one lifts the lever A into the upper position, drawn in full lines, and hooks it with the hook C into a ring D suspended from a point fixed once and for all by means of an iron wire F. The iron wire F, the suspension point of which is insulated, is connected to the two poles of an electric battery or an accumulator and is as thin as the weight B allows, in order to offer the highest possible resistance to the electric current. If you want to shut off the gas at the given moment, you close the circuit by pressing down an appropriately arranged contact button. As a result of its thinness, the part of the wire F inserted in the latter becomes so hot that it finally melts and tears. Weight B immediately follows gravity, swings lever A down and shuts off the tap.

In order to prevent the weight from rebounding, is. a safety catch is provided into which the lever A snaps and which holds it in its lower position.

The risk of a gas explosion is with the attachment of such a device if possible averted.

Claims (2)

If an automatic electrical illumination of the darkened rooms is combined with the shut-off device, the most expedient arrangement is so that incandescent lamps are switched on in the circuit and glow when the wire F is torn; as these lamps oppose a greater resistance to the current than the wire F, the earlier effect of the current on it is assured. In establishments which have an electrical lighting system, the connections can be arranged in such a way that the current is drawn from the useless lamps at the given moment and directed into the so-called safety lamps. However, the two security services can also be designed independently of one another by feeding the lamps from a special source of electricity, in which case the same contact that closes the circuit of the shut-off device also closes the one for the lamps at the same time. The contact buttons are not springy, as with bells, but, when pressed down, they have a continuous effect. With regard to conflagrations, the electric circuit can be made to occur automatically by winding the accumulator wires around each other to form a string; and insulates them with a material which melts under the influence of heat, so that the electric circuit then passes through; making direct contact with the exposed wires. The consequences of a shut-off by accidental tearing of the wire F can be prevented by the fact that the lever A hits a rotatable pointer L in its case, which then brings about the electrical circuit. The wire F can also, without significantly changing the function of the device, be replaced by an electric magnet, which is excited in the event of an electrical connection and pulls the ring D off the hook C to the side. In this case, the latter is only slightly curved or not curved at all. Patent claims: 1. A device for locking the gas meter BEZW. the main valves of the gas lines from a distance, consisting in the connection of the counterbalanced B key A 'with the switched-on in an electrical line thin suspension wire F in such a manner, that engages with the preparation of the circuit of the wire F to burn and the falling weight B turns back the key while at the same time light bulbs are switched on in the circuit (Fig. i). 2., The connection of the under i. marked Set up with the safety control to switch on the incandescent lights during, voluntary tearing of the wire F. For this purpose ι sheet of drawings.