DE61186C - Hollow locking slide for water posts (hydrants) that can be moved by a rotatable screw spindle - Google Patents

Description

IMPERIAL

PATENT OFFICE.

The previous hydrants have a valve-like acting horizontal surface; at the If the rod breaks (Prefsspindel), the water pressure opens the valve and a Flooding cannot be prevented.

In order to remove this uncertainty in the financial statements, it is desirable for the financial statements body to give the shape of a sealing slide in the vertical surface, but is (on the type of known, switched in the pipeline final slide valve) so far a Appropriate arrangement not made and not known.

The innovation described below and shown in the drawing in FIGS at hydrants is characterized by the fact that one is provided with vertical sealing surfaces conical water slide hollowed out inside and with upper drainage channels is provided, and that also the screw spindle that carries and moves it goes through this hollow final slide and has its thrust bearing in the bottom of the housing.

Due to this storage, not only is the closing slide independent of the hydrant rods, and the closing element remains in its closing position even after the latter ruptures, but a stroke reduction of the slide is also achieved through this hollow closing slide with the drainage channels opening upwards, because when the conical valve is lifted, firstly the side channels ee serve as drainage channels for the riser pipe of the hydrant, and secondly the cavity together with the upper drainage channels presents a very large drainage cross-section immediately after the final valve is slightly raised.

The arrangement is shown in Fig. 1 in the closed slide position, in Fig. 2 the slide is half lifted, and at this half lift the full average cross-section is already released, since the upper, still partially covered part of the through-channel α passes through the slot e empties itself, while the water of the lower part of the drainage channel α can flow off through cavity b, upper drainage channels b ^λ b ^α and through channel e to the hydrant pipe.

g is the housing in which the valve spindle s finds its thrust bearing at t. The valve spindle is provided with a thread v ¹ and the closing slide f carries in its upper part the nut / ¹ , in which the thread v ^{1 of} the spindle engages. dd ¹ are the sealing surfaces of the valve slide, m ^x is a sleeve into which the rod η engages with a square and can be lifted or removed as required. When turning the rod η , the nut f and thus the final slide is screwed high or low and either the channel is cleared or sealed.

Since the taper of the closing slide / is only a very small one, even after Breakage of the linkage an opening of the

Schlufsschieber can not enter, but the seal is maintained.

With the multiple damages, which the upper part of the hydrants by wagon, at the expansions and contractions that the linkage is caused by changes in temperature is exposed, this must remain undamaged the closing slide of be of decisive influence for the commercial usefulness of the same.

Claims (1)

Patent claim: Hollow locking slide for water posts (hydrants), which can be moved by a rotatable screw spindle, ^ its cavity (b). open at the bottom and at the top through lateral openings ^ ¹ ,) is in connection with the riser pipe, so that when the valve is opened, the water not only drains between the sealing surfaces (dd ¹ ), but also through the cavity of the valve. For this purpose ι sheet of drawings.