Waeschle Maschinenfabrik Gmbh

Waschle Maschinenfabrik Gmbh

Martin Sindermann

Walter Beirle

Eugen Rost

Martin Frank

A pipe switch includes a housing with a cock having at least one straight passageway for selectively connecting cylindrical conduits. In order to avoid a geometric joint in both rotational directions without requiring complicated refinishing processes while yet keeping the cross section of the passageway constant, the circumferential surface of the cock and the housing inner surface are designed as coextensive freely-shaped surfaces with such a curvature that the ports of the passageway and the housing conduits are at least essentially coincidental plane sectional surfaces in both rotational positions of the cock.

Spherical pipe switch with single channel or double channel cock

A pipe switch for pneumatically conveying a material such as bulk material includes a housing provided with a first port, a second port extending coaxially with the first port and a third port having an axis extending at an angle of less than 90.degree. relative to the axis of the second port, with the housing accommodating a cock which extends between opposing side covers and by which the first port is selectively connectable with the second port and with the third port. In order to reduce a danger of accident and to allow easy access to the interior of the pipe switch, the entire drive unit for actuating the cock is connected to the pipe switch at one of the side covers, with all movable parts being housed within an external compartment defined by an outer wall mounted to the one side cover.

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Ravensburg, Germany

Martin Sindermann