DE523176C - Core for pouring overflow channels in wash basins u. like - Google Patents

Description

Core for casting overflow channels in wash basins and the like so far channels in sanitary objects were made of ceramic material in such a way that that the piece forming the channel was attached to the corresponding body walls.

Garnishing makes such products much more expensive and leaves them behind ugly-looking edges at the transition points; also arise during the burning process Very easy cracks, which means that the objects are no longer usable.

For the production of round, arched channels in shaped stones an elastic hose or the like was used. However, such cores have the Disadvantage that their removal required after molding causes great difficulty prepared by requiring special aids for core removal.

These disadvantages of previous methods are addressed in accordance with the invention eliminated by pouring overflow channels in sinks and the like Parts of a conical, flexible, solid body consisting of core use finds, in which as the upper part a with plaster o. The like. Sheathed handle is used is, wherein the lower, elastic core end in the bent state in the core of Sink drain opening is used, while its upper, with plaster o. The like. Sheathed Part is held in a vertical position in the mold.

The invention is illustrated in the drawing, for example, It shows: Fig. i the longitudinal section of a washbasin overflow with an overflow mold core and Fig.2 shows the core device as a detail in the broad side.

The core for producing an overflow or the like consists mainly of an elastic, solid body a., Which is expediently made of rubber, and a handle b located on the same. First, the core is completed in such a way that around the stem b of the elastic body a the required extension of the core by applying a mass of plaster o. Dg1. he follows. Both parts a. and e taper downwards.

The mold core is introduced into the casting mold g, namely the tip c of the curved core part a protrudes into the core of the wash basin drain opening. After the core a, b, e has been introduced , the ceramic mass for producing the corresponding body f is introduced into the casting mold, as usual. After the mass has dried on, the core located in the shaped body is pulled out.

Because the core tapers downwards in the shape of a cone, its removal does not present any difficulties. The gypsum mass e surrounding the core stem b absorbs the mass moisture after the casting or the like has been completed and thus does not combine with the ceramic mass. When the core is pulled out, the core part e leaves a smooth channel wall at the corresponding point.

To create a smooth duct wall at the seat of the elastic Core lower part a, the latter is coated with fat, oil or the like. Such a cover prevents roughening of the channel during core removal.

The core can be used repeatedly.

Claims (1)

PATENT CLAIMS: i. Core for pouring overflow channels in wash basins and the like., characterized in that the core at its lower part of a conical, flexible, massive body consists of plaster of paris in the upper part sheathed stem is used. a. Core according to claim i, characterized in that that its lower, elastic end in the bent state into the core (d) of the wash basin drain opening is inserted, while its upper, covered with plaster part in a vertical position is kept in shape.