AN IMPROVED VALve for WATER GAUGES, JUNCTIONS, OR FOR OTHER PURPOSES
Year: 1885

page_text: We WILLIAM HARTCLIFFE and WILLIAM HENRY MALKIN, both of the St Simon
Street Brass and Copper Works, Salford, in the County of Lancaster, Engineers,
do hereby declare the nature of said Invention for AN IMPROVED VALve for
WATER GAUGES, JUNCTIONS, OR FOR OTHER PURPOSES, to be as follows:-
Our improved valve consists of two valves and valve stems contained in a single
casing or body, and preferably arranged with one valve stem passing through a
loop recess, strap, or cavity in the other valve stem in such manner that the two.
valves can be worked independently of one another.
In applying our improved valve to a water gauge we make a valve seating
preferably taper in the metal above the glass tube in which seating the coned end
of one valve stem is free to rest. This valve stem has a loop or other device formed
in it through which passes the stem of the second or usual hand valve which has
its seating as usual in the pipe communicating from the boiler or other vessel with
the glass tube. The first valve is free to rise and fall to open or close the passage
to the glass tube but is prevented from turning on its axis by a pin or other device
connected with its stem, and the second valve is free to be closed to shut off steam
from the boiler by turning the screwed stem. We fit another of our improved
valves at the other end of the glass tube.
When the gauge is working properly the first or free valves are kept open by
the pressure of the steam and water but when the glass tube breaks the rush of
the escaping steam and water catches these valves and closes them automatically,
the hand valves may then be turned to close the pipes to the boiler.
In applying our Invention to a junction we make our improved valve with two
valves and valve stems, one stem passing through the other in one body as before,
one valve for each of the two discharge pipes, but in place of making one of the
valves automatic we arrange both valves so that they can be opened and closed by
hand at will independently of one another.

page_text: •
We WILLIAM HARTCLIFFE and WILLIAM HENRY MALKIN both of the St Simon
Street Brass and Copper Works Salford in the County of Lancaster Engineers
do hereby declare the nature of said Invention for AN IMPROVED VALVE FOR
WATER GAUGES JUNCTIONS OR FOR OTHER PURPOSES and in what manner the
same is to be performed, to be particularly described and ascertained in and by !
the following statement:-
Our improved valve consists of two valves and valve stems contained in a single
casing or body, and preferably arranged with one valve stem passing through a
loop recess, strap or cavity in the other valve stem in such IDanner that the two
valves can be worked independently of one another.
In applying our improved valve to a water gauge we make a valve seating
preferably taper in the metal above the glass tube in which seating the coned end
of one valve stem is free to rest.
This valve stem has a loop or other device formed in it through which passes the
stem of the second or usual hand valve which has its seating as usual in the pipe
communicating from the boiler or other vessel into the glass tube. The first valve
is free to rise and fall to open or close the passage to the glass tube but is
prevented from turning on its axis by a pin or other device connected with its
stem and the second valve is free to be closed to shut off steam from the boiler by
turning the screwed stem. We fit another of our improved valves at the other end
of the glass tube.
When the gauge is working properly the first or free valves are kept open by the
pressure of the steam and water but when the glass tube breaks the rush of the
escaping steam and water catches these valves and closes them automatically-
the hand valves may then be turned to close the pipes to the boiler.
In applying our Invention to a junction we make our improved valve with two
valves and valve stems one stem passing through the other in one body as before
one valve for each of the two discharge pipes but in place of making one of the
valves automatic we arrange both valves so that they can be opened and closed by
hand at will independently of one another. And, in order that our Invention may
be fully understood and readily carried into effect we will describe the accom-
panying sheet of Drawings reference being had to the figures and letters marked
thereon.
In Figures 1 and 2 a, is part of the front of a boiler or other steam generator,
and b the gauge glass fitted above in a metal casing c and below in a similar
casing c¹.
Each casing has the usual passage d leading from the boiler to the gauge b and
this passage d can be opened or closed at will by a valve e operated by means of a
hand wheel fixed on the valve spindle e' which screws into the casing.
Each valve stem el passes through a loop or opening formed in the stem f of
a double beat valve f f of which the valve f¹ which closes the glass tube is

page_text: preferably rather the larger-Each valve stem f is fitted and free to slide in
suitable glands or stuffing boxes h. h² respectively and is prevented from turning
in any convenient manner, the stuffing boxes form guides for the stems f-Seat-
ings and ¹ respectively are formed in the casing for the valves f¹ and f³ which
are acted upon by the pressure of steam and water from the boiler as subsequently
described.
In addition to the valves already mentioned one or both of the casings is
provided with an independent "blow through" valve such as the valve k. (see
Fig. 2) which is shown attached to the casing o' and may be operated by the hand
wheel kl.
в
When one of the valves e is opened its automatic double beat valve being also
open the pressure of the water admitted from the boiler through the passage d to
the gauge glass acts upon the other double beat valve and opens it. By then
opening the other valve e an equilibrium is established.
The valves ff. do not interfere with the regular working of the gauge until the
glass breaks but immediately this takes place the rush of the escaping steam and
water catches the valves f¹ and forces them on to their seatings i thereby closing
the valves automatically and instantaneously preventing any farther escape of
steam or water. The valves e can then be turned to close the passages d until the
gauge has been repaired.
The spindles of the double beat automatic valves should be moved by hand
occasionally to ascertain whether they are free and in working condition.
Figures 3 and 4 represent our improved valve as constructed when intended for
use as a three way or junction valve. In these views 1. designates the body of the
valve, m the inlet, and n and o the two outlets. The outlet n is controlled by the
valve p. on the spindle p¹ operated by means of the hand wheel p' and the outlet o
by the valve 9 on the spindle q' operated by means of the hand wheel q³, the
valves P and q having suitable seatings in the casing l.
Both the valve spindles p¹ and q respectively screw into the casing . and the
spindle p' is made in two portions one of which has a loop or opening through
which passes the spindle q¹ in a manner similar to the arrangement of valve
spindles already described with reference to Figs. 1 and 2; but in this case neither
of the valves p and q is automatic. The portion of the spindle p¹ which has the
loop is prevented from turning by means of a pin or guide 8 or otherwise.
The hand wheels p and q can be turned independently of one another to open
or close either of the respective valves p and q which they control.
In Fig. 3 both the outlets n and o are shown closed but by raising either the
valve p. or the valve q. from its seating the liquid admitted through the inlet m. to
the body l. can be allowed to flow through either outlet or through both outlets
simultaneously.
It is obvious that in place of one inlet and two outlets there might be two inlets
and one outlet.
Figure 5 represents our improved valve arranged as a combined back pressure
and stop valve. .
This arrangement is substantially the same as when the valve is applied to a
water gauge-t is the valve chamber or casing, u the inlet pipe and the outlet to
the boiler or other vessel, wis the ordinary "screw-down" stop valve the stem of
which is made in two portions w¹ and w³ respectively of which the portion w' has
a loop or cavity through which passes the stem of the automatic back pressure
valve -The portion w¹ of the valve stem is kept from turning round by means of
a pin or guide or in other convenient manner.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that
what we claim is:-
1. The improved valve consisting of two valves and valve stems contained in
one body with one valve stem passing through a loop, opening or cavity in the

page_text: other valve stem in such manner that the two valves can work or be worked
independently of one another.
2. In a water gauge for steam boilers and the like the combination with a valve
operated by hand to open and close the passage to the boiler, of a valve for
automatically closing the inlet to the glass tube, the spindle of one of the said
valves passing through the spindle of the other valve substantially as and for the
purposes herein described with reference to Figures 1 and 2.
3. The construction combination and arrangement of parts forming the improved
valve for junctions substantially as herein described and 'as illustrated by Figures 3
and 4.
4. The construction combination and arrangement of parts forming the improved
combined stop and back pressure valve substantially as herein described with
reference to Figure 5.