Preventing Valves.
Year: 1886

page_text: ALVOS.
I, WILLIAM Ross, of 196 Eglinton Street, in the City of Glasgow, Brassfounder,
do hereby declare the nature of this invention to be as follows:-
The valve as constructed under this invention consists of three main parts,
namely, a valve proper, a cover and a seat. The valve itself which is composed of
india rubber, leather or other flexible substance is hemispherical, cylindrical or
conical in form and at its upper part it has a flat circular flange or rim concentric
with the body of the valve and of greater diameter. Besides projecting beyond
the valve body the flange also projects inwards over the cup or other shaped
space formed by the valve for the purpose of retaining in position a leaden or other
weight filling the said space.
The cover of the valve is of lead or other metal dish or dome shaped and having
its edge bevelled to cause it to press closely on the outer part of the valve flange
and so form a cavity which enables the valve to be lifted by suction. The cover
has a shear or link on its upper part by which it is suspended from or connected to
the valve actuating apparatus and it, as also the valve and its weight, has a hole
through it centrally for the passage of a spear or rod which is fixed in and projects
upwards from a bridge in the valve seat. On the upper end of the said spear or
rod a nut is screwed or other equivalent means is provided to act as a stop to the
lift of the valve.
Dated this Nineteenth day of May 1886
CRUIKSHANK & FAIRWEATHER,
Glasgow, Agents.
WHA
Preventing Valves.
I, WILLIAM Ross of 196 Eglinton Street, in the City of Glasgow, Brassfounder,
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 valve as constructed under this invention consists as seen in side elevation
at figure 1, and in vertical section at figure 2 of the appended drawings, of three

page_text: main parts, namely a valve proper a, a cover b, and a seat c, having a spear or
spindle d, projecting upwards therefrom through the cover.
The valve a, which is composed of india-rubber, leather or other flexible substance
may be hemispherical in form as indicated, or it may be cylindrical or conical in
forin and in any case it has at its upper part a flat circular flange or rim e, con-
centric with the body of the valve and of greater diameter. Besides projecting
beyond the valve body the flange e also projects inwards over the cup or other
shaped space formed by the valve the said inwardly projecting part serving to
retain in position a leaden or other weight f, which fills the said space.
The cover b, of the valve is of lead or other metal and it is dish or dome shaped
on its under side to cause it to press closely on the flange e, of the valve and so
form a cavity which enables the valve to be lifted by suction. The cover has a
shear or link g, on its upper part by which it is suspended from or connected to
the valve actuating apparatus and it, as also the valve a, and its weight f, has a
hole through it centrally for the passage of the spear or rod d, which is screwed
and soldered into a socket h, made at the centre of a bridge i, extending across the
lower part of the valve seat. The spear or rod d, acts as a guide in raising the
cover as at figure 3, the cover in being raised lifting the valve a with it and opening
communication to the water supply. In the cover a screw j is inserted the said
screw having a tapered slot or draft k, in one side through which water passes into
the dome shaped space at the under side of the cover and destroying the vacuum
causes the valve to part from the cover and fall on to its seat so preventing waste
of water. Water is caused to pass faster or slower into the cavity by adjusting
the position of the screw j, and to regulate the lift of the valve a a spring pin k¹ is
passed through the rod d, or a nut may be screwed on its upper end or other
equivalent means provided to act as a stop to the lift.
。
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
1 claim is.
1. In valves of the class illustrated on the accompanying drawings a guiding
spear or rod d, fixed in the valve seat and projecting through the cover b, substan-
tially as described.
2. In apparatus of the class illustrated on the accompanying drawings, a valve a,
arranged to move freely on a fixed spear or rod d, substantially as described.
Dated this Fourth day of October 1006