Improvements in Valves for use in connection with Hydraulic Mains, Washers, and other Apparatus employed in Gas Works.
Year: 1893

page_text: Date of Application, 16th Jan., 1893
Complete Specification Left, 19th Sept., 1893-Accepted, 21st Oct., 1893
PROVISIONAL SPECIFICATION.
Improvements in Valves for use in connection with Hydraulic Mains,
Washers, and other Apparatus employed in Gas Works.
1, FREDERICK SOUTHWELL CRIPPS of 9 High Street, in the Town of Sutton,
in the County of Surrey, Civil and Mechanical Engineer, do hereby declare the
nature of this invention to be as follows :-
This valve consists of such parts & is of such construction as will admit of
drawing off or passing away the gas, tar, ammoniacal liquor or other liquids or
gases, either separately or together at one time or at different times as may be
desired by the operator, from "hydraulic mains," washers, and other apparatus
commonly in use in gas-works.
It is a rectangular box, on two opposite sides of which are adjustable slides &
openings; and on the other two sides are handholes with lids for affording access
for cleaning, repairs &c. as occasion requires. On the bottom of the box is an
ordinary disc or mitre valve which can be raised for flushing out the hydraulic
main from its lowest level when required, or it can be partly open so as to admit of
a constant outflow of the thick tar at the low level.
As regards the two slides on the two opposite faces of the valve, the one which
is next to the hydraulic main has but a small range working up and down a bridge
piece or bar across the front. This bridge piece extends from a little below the lowest
overflow level to within a few inches of the bottom of the hydraulic main, an
opening being provided at the foot to admit of the tar passing direct into the valve.
The slide can be raised above the top of bridge so as to prevent the liquor passing
over that way. The slide working on the bridge face is called the "bridge slide"
to distinguish it from the seal regulating slide on the opposite side of the valve and
which is termed in this description the regulating slide." The regulating slide is
for regulating the seal of what are known as, the "dip pipes" in the hydraulic main
or the overflow level. The higher this slide the greater is the "seal" and vice versa.
This slide also controls the gas passage which when required it cau close entirely
and so prevent any gas passing. But when working, the gas passes in from the
hydraulic main by the opening in the front above the bridge slide and then out by
the opening above the regulating slide immediately opposite. When the regulating
slide is quite closed the interior of the valve can be opened and attended to without
gas escaping.
The valve is designed for working in either of the following ways.
(1.) Running the light liquor away at a high level and the tar at a low level
simultaneously by slightly opening the flush disc at the bottom but not enough to
unseal the dip pipes. The bridge slide must be fully lowered and the regulating
slide adjusted to give the required seal on the dip pipes. The gas of course passes
right through at the top without obstruction.
(2.) The tar can be drawn off constantly by the weight of the greater head of
liquor in the hydraulic main forcing it in the opening at the foot (below the bridge)
and up inside the body of valve and away over the overflow or regulating slide.
In this case the liquor remains in the hydraulic main and drives the tar out before
it. The tar disc at foot is of course closed and the bridge slide is kept well up.
Or if found more convenient the bridge slide can be lowered to within half an inch
or so of the overflow level so that a small quantity of light liquor is always passing
away at the top.
The gas passes right through without obstruction.
(3.) The liquor can be run away at the top by lowering the bridge slide fully.
The seal being regulated by adjusting the regulating slide. In this case the tar

page_text: In the
would be flushed out periodically from the bottom by opening the tar disc.
ordinary way the gas would pass right through even while flushing out but if.
desirable the gas can be cut off by closing the regulating valve entirely.
Dated this Fourteenth day of January 1893.
FREDERICK SOUTHWELL CRIPPS.
COMPLETE SPECIFICATION.
Improvements in Valves for use in connection with Hydraulic Mains,
Washers, and other Apparatus employed in Gas Works.
I, FREDERICK SOUTHWELL CRIPPS, of 9 High Street, in the Town of Sutton,
in the County of Surrey, Civil and Mechanical Engineer, 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 :-
This valve consists of such parts and is of such construction as will admit of
drawing off or passing away the gas, tar, ammoniacal liquor or other liquids or
gases, either separately or together, at one time or at different times as may be
desired by the operator, from "hydraulic maius" "washers," and other apparatus
commonly in use in gas works.
And in order that the nature of my invention and the manner in which the same
is performed may be understood, I append a sheet of illustrative drawings, and the
following description thereof.
Figs. 1, 2 and 3 show the valve to be a rectangular box, on two opposite sides of
which are adjustable slides and openings A and B in Figs. 1 and 3; and on the
other two sides are handholes C & C with lids for affording access for cleaning,
repairs &c. as occasion requires. On the bottom of the box is an ordinary disc or
mitre valve D, which can be raised for flushing out the hydraulic main from its
lowest level when required, or it can be partly open so as to admit of a constant
outflow of thick tar at the low level.
"
As regards the two slides, A and B on the two opposite faces of the valve, the
valve A which is next to the hydraulic main, has but a small range working up &
down a bridge piece or bar E across the front. This bridge piece extends from a
little below the lowest overflow level to within a few inches of the bottom of the
hydraulic main, an opening F being provided at the foot, to admit of the tar passing
direct into the valve. The slide can be raised above the top of bridge so as to
prevent the liquor passing over that way, as shewn in Fig. 1. The slide A working
on the bridge face, is called the " bridge slide to distinguish it from the seal
regulating slide B, on the opposite side of the valve, and which is termed in this
description the "regulating slide." The regulating slide B is for regulating the
seal of what are known as the " dip pipes" in the hydraulic main, or the overflow
level. The higher this slide, the greater is the "seal" and vice versa. This slide
also controls the gas passage G which when required it can close entirely and so
prevent any gas passing. But when working, the gas passes in from the hydraulic
main by the opening in the front, H, above the bridge slide A, and then out by the
opening G above the regulating slide B immediately opposite. When the regu-
lating slide B is quite closed, the interior of the valve can be opened and attended to
without gas escaping.
The valve is designed for working in either of the following ways indicated by
Figs. 4, 5 & 6.
(1.) Running the light liquor away at a high level and the tar at a low level
simultaneously, as in Fig. 4, by slightly opening the flush disc D at the bottom but
not enough to unseal the dip pipes. The bridge slide A must be fully lowered, and
the regulating slide B adjusted to give the required seal on the dip pipes.
The gas
of course passes right through H & G at the top without obstruction.
(2.) The tar can be drawn off constantly as in Fig. 5, by the weight of the
greater head of liquor in the hydraulic main forcing it in the opening F at the foot

page_text: (below the bridge) and up inside the body of the valve and away over the overflow
or regulating slide B. In this case the liquor remains in the hydraulic main and
drives the tar out before it. The tar disc D at foot is of course closed, and the
bridge slide A is kept well up. Or if found more convenient the bridge slide A,
can be lowered to within half an inch or so of the overflow level so that a small
quantity of light liquor is always passing away at the top.
The gas passes right through H & G without obstruction.
(3.) The liquor can be run away at the top as in Fig. 6 by lowering the bridge
slide A fully. The seal being regulated by adjusting the regulating slide B. In
this case the tar would be flushed out periodically from the bottom by opening the
tar disc D. In the ordinary way the gas would pass, right through H & G even
while flushing out, but if desirable the gas can be cut off by closing the regulating
valve B entirely.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. That the valve enables liquids and gas to be either drawn off, shut off, or
regulated in various ways according to any system of working 'found most
convenient.
2. What has hitherto involved a different arrangement of pipes & valves for the
different systems of drawing off liquids &c., is in this valve combined, so that any
system can be adopted at pleasure without involving alteration to the apparatus.
3. Two liquids of different specific gravity can be drawn off continuously from any
vessel to which this valve is connected, either separately, or together, or either of the
liquids can be drawn off alone--that is to say-the lighter only, or the heavier
only, as may be desired.
4. Gas can be either passed or shut off entirely while flushing out or emptying
the hydraulic main, or other vessel to which this valve is attached.
5. The interior of the valve is accessible for examination & repairs without gas
escaping back from what is known in gas works as the foul main."
Dated this 18th day of September 1893.
FREDERICK SOUTHWELL CRIPPS.