An Automatically Closing Water Supply. Cock.
Year: 1891

page_text: Date of Application, 4th Aug., 1891-Accepted, 12th Sept., 1891
COMPLEID
An Automatically Closing Water Supply. Cock.
I, OTTO SCHUBERT, of 34 Georgstrasse, Hanover, in the. Empire of Germany,
Mechanician, do hereby declare the nature of this invention and in what manner
the same is to be performed, to be particularly described and ascertained in.and
by the following statement :-
The automatically closing water supply, cocks hitherto used have in practice a
great many defects, their construction being too complicated while they cannot be
relied on when operating.
Moreover, their passages are generally too narrow, and, are; often. obstructed,
thus causing great inconvenience, so that these apparatus have, to be, abandoned.as
not fulfilling their object.
The automatically closing water supply cock constituting this invention and
hereinafter described is entirely free from the above-mentioned defects.
In the accompanying drawings,
"
Figures 1 and 2 are cross sections of the new water supply cock, showing the
inner closing part in an open position, whilst
Figure 3 shows the same in a closed position.
Figure 4 is a cross section of the closing part showing the spindle.
Fig. 5 is a side view of the whole apparatus.
This invention consists of the part A, the casing B and the closing part shewn
in Fig. 4.
The casing. B surrounds the lower part of A. and is readily movable up and
down being guided by the screw i. and the slot n.
The closing part consists of the spindle a and the disc o and block p firmly
soldered in slots formed in the said spindle and is inserted from. below in the
part A. The hollow, loose and movable, india-rubber cylinder d carrying inwardly
a bush or sheath is first passed over the spindle a being followed by a plug
furnished with a conical end v by a disc e resting upon a shoulder of the said plug
and finally by the piston-like disc b with outlets s.
The whole of this closing part can be easily inserted in a vertical direction in the
part A which is closed air tight at the top by a lid or cover screwed thereon.
When the cock is closed the closing part can only sink slowly under the outflowing
water, as the india-rubber plate e does not allow the water to pass through. The
first closing is effected by the india-rubber cylinder at m while the second closing
takes place subsequently above the india rubber cylinder or plug & through the
agency of the conical end v.
It is noteworthy that this water closing apparatus is furnished in the manner
above described with two closing devices whereby the greatest security is afforded
towards obtaining an unfailing gradual closing action.
When the cock is opened, the casing B is raised and with it, the closing part
this being effected by the inner tubular piece. The small passage past the cone v
above the cylinder d is first opened and when the spindle a has been raised with
the former, the disc o strikes in its upward motion against the sheath of the
india-rubber cylinder and carries the latter upward.
The outlet opening and with it, the outflow of water can be increased through
conical side depressions or recesses u formed in the cylinder d, moving in the
cylindrical bore of the body or chamber D, (Fig. 1) or without lateral depressions
or recesses in the cylinder by forming the chamber with a conical bore as in
Figures 2 and 3.
By releasing the cock the casing B slides quickly down. The closing part
follows closely after. The first closing is effected by the india-rubber cylinder d

page_text: at m; the second closing occurs gradually above the india rubber cylinder d
through the agency of the conical appendage . Owing to the gradually reduced
outflow due to the arrangement of the india-rubber cylinder furnished with lateral
depressions or recesses and moving in the cylindrical chamber or bore D
(Figure 1) or of the india-rubber cylinder without lateral depressions or recesses,
moving in the conical chamber or bore D (Figures 2 and 3) in combination with
the subsequent closing by the conical appendage v of the spindle a, the back wash
or flow of the water in the pipes is avoided.
The raising or lifting is very soft, so that even the weakest hand can open the
cock with ease.
The new cock operates faultlessly in all cases, without ever becoming obstructed.
It is of very simple construction while yet very solid and although of cheap
manufacture presents an elegant appearance.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. An automatically closing water supply cock constructed and arranged to
operate substantially as described.
2. An automatically closing water supply cock in which the discharge valve v
mounted on the spindle a and furnished with a brake valve piston b, e, is arranged
to move the india-rubber cylinder d, serving as a seat therefor and closing the
main in the cylindrical chamber D (Fig. 1) or in the conical chamber D (Figs. 2
and 3) the said cylinder being furnished in the first case with depressions recesses
or cavities u.
Dated this Third day of August 1891.
CRUIKSHANK & FAIRWEATHER,
62, St. Vincent Street, Glasgow, Agents.