Improvements in Valves for Hydraulic Mains, or for other Apparatus where Liquids of Different Specific Gravities are to be Separately Removed.
Year: 1893

page_text: Date of Application, 13th Dec., 1893
Complete Specification Left, 13th Sept., 1894-Accepted, 20th Oct., 1894
PROVISIONAL DIMCIFICATION
Improvements in Valves for Hydraulic Mains, or for other Apparatus
where Liquids of Different Specific Gravities are to be Separately
Removed.
I, CHARLES CLEMENT WALKER of Midland Iron Works, Donnington near
Newport in the County of Salop, Engineer do hereby declare the nature of my
invention to be as follows:-
The valves according to my invention are more specially designed for working
and controlling hydraulic mains but they are applicable also for use with washers,
scrubbers or other apparatus where it is necessary to deal with and remove liquids
of different specific gravities for instance tar and ammoniacal liquor, while at the
same time preserving any desired depth of liquid in the apparatus. I will describe it
as used in connection with a hydraulic main from which its other applications will
also be understood.
In a valve constructed according to my invention there are two passages or
openings one at a higher level than the other. The passage at the higher level
leads from the side of the hydraulic main and allows the gas and liquor to pass
through from the said main to the foul main. The said passage is controlled by a
slide (preferably of □ shape) working against a valve facing in the said passage
and capable of being raised or lowered to give any desired elevation of the lower
part of the passage and consequently any desired seal on the dip pipes of hydraulic
main. The said slide can also close the passage entirely so as to prevent gas
returning from the foul main.
The front of the said slide should be planed and surfaced to work closely against
the surfaced side of the faces against which it bears, and it is securely held in
position close up against the said faces which may be effected by means of a spring
bearing upon its back. This ensures a perfectly gas tight joint for all positions of
the slide.
The opening or passage at the lower level is connected with the bottom of the
hydraulic main which may be effected by means of a bend or elbow pipe and allows
the tar to run away continuously and automatically. The level of the tar in the
hydraulic main is regulated by a slide working against the surfaced faces of the
division piece in the valve; the top of this division piece being level with the bottom
of the hydraulic main. The said slide can be raised or lowered to a greater or
lesser distance above the top of the division piece to suit the specific gravity of the
tar deposited in the hydraulic main, and the hydraulic main can be flushed out by
completely lowering the rectangular tar slide.
The valve can if desired be made in two separate parts as this may be
advantageous where the difference in the levels of the liquids is at all large.
By means of the valves described the tar can be removed from the hydraulic
main while the said tar is in a liquid state and before the volatile compounds are
driven off by the heat and the residue converted into pitch the action being
continuous and automatic whilst should the hydraulic main become choked so as to
prevent the free flow of tar, the whole main can be flushed out to its lowest level
aud any obstruction be thus removed and cleared away. The heavier liquid is
removed or drawn off from the bottom, while the lighter liquid is also being removed,
whatever may be the difference between the specific gravities of the two liquids.
Dated the 13th day of December 1902
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, Agents,

page_text: COMPLETE SPECIFICATION.
Improvements in Valves for Hydraulic Mains, or for other Apparatus
where Liquids of Different Specific Gravities are to be Separately
Removed.
I, CHARLES CLEMENT WALKER of Midland Iron Works Donnington near
Newport in the County of Salop 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 :-
The valves according to my invention are more especially designed for working
and controlling hydraulic mains but they are applicable also for use with washers,
scrubbers or other apparatus where it is necessary to deal with and remove liquids
of different specific gravities for instance tar and ammoniacal liquor, while at the
same time preserving any desired depth of liquid in the apparatus.
I will describe my said invention with reference to the accompanying drawings
as used in connection with a hydraulic main from which its other applications will
also be understood.
Figure 1 is a section shewing my invention applied to a hydraulic main and
Figure 2 is a horizontal section on the line 1-2 Figure 1. Figure 3 is a
side view.
In a valve constructed according to my invention there are two passages or
openings A and B one at a higher level than the other. The passage A at the
higher level leads from the side of the hydraulic main C, and allows the gas and
liquor to pass through from the said main to the foul main. The said passage A is
controlled by a slide D (preferably of ☐ shape) working against a valve facing
in the said passage A and capable of being raised or lowered to give any desired
elevation of the lower part of the passage and consequently any desired seal on the
dip pipes of the hydraulic main. The said slide can also when desired be made to
close the passage entirely so as to prevent gas returning from the foul main.
The front of the said slide D should be planed and surfaced to work closely
against the surfaced side of the faces against which it bears, and it is securely held
in position close up against the said faces which may be effected by means of a
spring d bearing upon its back as shewn in Figure 2. This ensures a perfectly gas
tight joint for all positions of the slide.
The opening or passage B, at the lower level is connected with the bottom of the
hydraulic main C (which may be effected by means of a bend or elbow pipe as
shewn clearly in Figure 1) and allows the tar to run away continuously and
automatically. The level of the tar in the hydraulic main is regulated by a
slide E working against the surfaced faces of the divisiou piece in the valve, the
top of this division piece being level with or below the bottom of the hydraulic
main. The said slide E can be raised or lowered to a greater or less distance above
the top of the division piece to suit the specific gravity of the tar deposited in the
hydraulic main and the hydraulic main can be flushed out by completely lowering
the said slide E. e is a spring at the back of the slide E.
The valve can if desired be made in two separate parts as this may be
advantageous where the difference in the levels of the liquids is at all large. The
valves may be operated in any suitable way. I have shewn screws f for operating
them; fare pointers carried by the said screws and working against scales to
shew the position of the valves.
By means of the valve E the tar can be removed from the hydraulic main while
the said tar is in a liquid state and before the volatile compounds are driven off by
the heat and the residue converted into pitch the action being continuous and
automatic, whilst should the hydraulic main become choked so as to prevent the
free flow of tar, the whole main can be flushed out to its lowest level and any
obstruction be thus removed and cleared away. The heavier liquid is removed or

page_text: drawn off from the bottom, while the lighter liquid is also being removed, whatever
may be the difference between the specific gravities of the two liquids.
From the foregoing description it will be understood also that the invention may
be similarly applied to purposes analogous to that described.
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. The arrangement or construction constituting the duplex arrangement of
valves for hydraulic mains or for other apparatus where liquids of different specific
gravities are to be separately removed substantially as hereinbefore described and
illustrated by the accompanying drawings.
2. In valves for the purpose mentioned two passages or openings one for the
lighter liquid being at a higher level than the other and controlled by an adjustable
slide the lower passage or opening receiving the liquid of greater specific gravity
and being provided with a division piece and adjustable slide and means for
removing the separated liquids substantially as herein before described.
Deted this 13th day of September 1894.
JOHNSONS & WILLCOX,
Agents.