DE389442C - Cable or wire connection for electrical purposes - Google Patents

Description

GERMAN EMPIRE

ISSUED
Ali. FEBRUARY 1924

REICH PATENT OFFICE

PATENT LETTERING

CLASS 21 c GROUP 20

(O 12595

Paul Otto in Berlin.

Cable or wire connections for electrical purposes.
Patented in the German Empire on October 6, 1921.

It is already known to connect wires with such wire connections to introduce with solder in sleeves, sen, trays or the like absolutely necessary, there, by heating the wire connection, the metal used for liquefaction Bringing solder to melt and so in most cases was a zinc or

a cast solid wire connection to form lead alloy and as such both from strength targets, care considerations as well as consideration for the

Claims (2)

Weather resistance is of no use without sheathing. Finally, soldered connections in aluminum conductors are difficult to make because of the poor soldering properties of aluminum. In contrast, a cast body is used directly in the subject matter of the present invention. This cast body can be made of brass, aluminum or zinc and can be produced by the permanent mold or injection molding process, etc. If two wire ends are to be connected, z. B. a pair of pliers, in the jaws of which the molds are excavated, placed around the wire ends and let the liquid metal through a funnel into the cavity formed by the pliers. If the pliers or the mold are removed after the procedure, the wires are connected. represents. In addition to a large protection of the connection point against stress in the longitudinal direction of the cable, a particularly intimate transition for the electrical current is also created because the casting body, due to its shrinkage when it cools, presses the superimposed ends of the cables tightly against one another. Such a connection is very conductive and very resistant to tensile stress. The hard cast skin provides good protection against the weather and external damage. In the accompanying drawing, an exemplary embodiment of the subject matter of the invention is illustrated, and it shows: Fig. Ι a longitudinal section through a cable connection according to the present invention, Fig. 2 a section through the same along the line TT-II of Fig. 1, Fig. 3 up to 5 longitudinal sections through different wire and cable connections on a reduced scale, Fig. 6 a side view of the connection of the cable or wire end with a cable lug and Fig. 7 a plan view of this connection, partially cut. According to the present invention, the ends 2 and 3 of the wire or cable lugs 4 and s are surrounded by a cast body 1 which is produced in the manner described above. The ends 2 and 3 are expediently turned a little wide. The longitudinal strength can be further increased by placing the ends to be connected into one another in hook or loop form, as illustrated by hooks 6 and 7 in Fig. 3 or by loops 8 and 9 in Fig. 4. With a different cable or wire connection, e.g. B. T-connection according to Fig. 5, a wire 10 is expediently placed around the other wire 11 in the form of a hook or loop 12 around. To produce a cable lug according to Figs. 6 and 7, it is only necessary either to connect an existing eye 13 through such a cast body 14 to the expediently somewhat flattened end 15 of a cable 16 or to produce the eye 13 during the casting itself. The safety of the cable or wire connection described above can be further increased by not using an ordinary cast body for the connection, but rather a cast body which is produced by applying pressure. Another advantage of the wire connection according to the present invention is that the connection parts are hermetically sealed by the cast body, so that the wire ends do not oxidize and can disturb the current transfer through oxidation, and a safe screwless connection of aluminum conductors is possible in the first place . Patent-Ax sayings: 1. Cable or wire connection for electrical purposes, characterized by one holding the parts to be connected in their position without special pressing means only as a result of shrinkage and the Transition for the electric current causing cast body, which only as such creates the connection without any sheathing. 2. Cable or wire connection according to claim 1, characterized by a create a particularly intimate connection with the application of pressure Cast body. 1 sheet of drawings.