SU10754A1 - Contact switch with bimetallic plate for signaling temperature changes - Google Patents

Description

The present invention relates to a contact switch. with a bimetallic plate for signaling a temperature change and consists in using a movable plate with a adjustable contact screw that allows the switch to be installed for both the current off operation and the current off operation.

In FIG. 1 shows a circuit breaker for operating current shutdown; FIG. 2 is the same switch, but for operation to turn on the current.

The main plate 2 is made of ebonite, porcelain, wood, etc. A metal plate 7 with a slot is fastened, and a separate end of the bimetallic plate 1 is attached to it with screws 13,13; . To the fixed end of the plate 1 is attached by a screw 3 one of the wires of the electric signaling circuit, the other wire of which is connected by a screw b to the plate 7. On the plate 7 there is a movable plate 8 with a slot through which the clamping screw 12 passes; through the left side of the plate 8 the adjustable contact screw 11 is missed. If the switch is intended for operation

for shutdown, a rim with a screw 11 is located on the right side of the movable end of the bimetallic plate 1 (Fig. 1), if the switch should work for switching on, then the same parts will be located — as indicated in FIG. 2, that is, from the left side of the end of the movable plate. For setting the switch to a predetermined critical temperature, there is a graduated scale on the plate 7, and on the plate of the plate 8 there are two vernier indicators for both positions of the plate 8.

The entire device is covered with a lid, provided with a bottom grid, and from the sides and top, with small openings for air circulation. In order that the installation at certain temperatures could not be changed, the cover is attached to the main plate with screws and wire, the ends of which can be sealed.

This switch can be used both for fire electrical alarm systems and for electrical alarm systems in garden and garden facilities for alarm systems when the temperature drops.

As the temperature rises, the bimetallic plate 1 is compressed, its moving end moves to the left.

a break (fig. 1) or a lock (fig. 2} electrical signal circuit.

The subject of the patent.

A contact switch with a bimetallic plate for signaling a temperature change, characterized by the use of a movable plate 8 provided with a slot for

the fixing screw 12 and the adjustable contact screw 11 passing through the rim of the plate, which for setting the current on is set so that the contact screw 11 is on one side of the movable end of the bimetallic plate 1 (Fig. 2), and for the work on switching off the current of the side with the contact screw 11 on the other side of the same plate 1 (Fig. 1).

fig1