IMPROVEMENTS IN DIP PIPES
Year: 1884

page_text: WO ALEXANDER WILSON of Nine Elms Lane, Battersea in the County of
Surrey, Engineer, and ROBERT PORTER of 3 St Michael's Alley, Cornhill in the
City of London, Engineer do hereby declare the nature of our invention for
IMPROVEMENTS IN DIP PIPES to be as follows:-
This invention relates more particularly to dip pipes as used in making gas for
discharging the gas from the ascension pipes into the hydraulic main, but it is also
applicable to dip pipes which may be used for any other purpose.
The object of this invention is so to construct the dip pipe that it may readily
be raised out of the sealing liquid, to allow of a clear flow of the gas through the
hydraulic main to the condenser, and lowered into the sealing liquid as occasion
may require.
In carrying out this invention, the dip pipe is fixed vertically as usual, but the
lower portion, or that which enters the sealing liquid, is made separate from the
upper part. The lower end of the upper part is formed or fitted externally in any
convenient manner with a collar or flange. Outside this pipe we arrange a short
pipe or sleeve which is provided internally at the upper end with a flange or collar
and which when the sleeve is down will rest on the collar or flange of the main
portion and form a practically gas tight joint.
The raising of this sleeve is effected by a lever or a pair of levers or fingers
placed outside the dip pipe and connected to the sleeve by rods or links so that
the levers will not form any obstruction to the flow of the gas through the pipe
or sleeve nor present any lodgment within the same on which tar may be
deposited.
These levers are attached or mounted in any convenient manner to an axle and
project through an opening in a suitable box open to the hydraulic main and
conveniently secured thereto, such opening being closed by the axle, which will
thus prevent any escape of gas. The axle will be maintained in position by a pin
or cotter which will permit of its being readily removed if desired or it may be
otherwise secured.
The rear ends of the levers or extensions thereof will be connected to rods or
chains, which will be placed within convenient reach of the attendant, so that the
dip pipe of any particular retort may be opened or closed as desired.
If desired we may form a flange outside the dip pipe at a suitable height to
form a stop against which the top of the sleeve may bear when lifted and at the
same time to prevent the passage of gas between the sleeve and the pipe when the
sleeve is fully lifted.

page_text: We ALEXANDER WILSON of Nine Elms Lane Battersea in the County of
Surrey, Engineer, and ROBERT PORTER of 3, St Michael's Alley, Cornhill in the
City of London, Engineer, do hereby declare the nature of our invention for
IMPROVEMENTS IN DIP-PIPES, and in what manner the same is to be performed, to
be particularly described and ascertained in and by the following statement :-
This invention relates more particularly to dip-pipes used in making gas, for
discharging the gas from the ascension pipes into the Hydraulic main, but it is
also applicable to dip-pipes which may be used for any other purpose.
The object of this invention is to construct the dip-pipe of a telescopic form
capable of extension and retraction so that it may readily be raised out of the
sealing liquid, to allow a clear way without any obstruction for the flow of the
gas from the retort or the ascension pipe into and through the hydraulic main, and
lowered into the scaling liquid as occasion may require. In carrying out this
invention the dip-pipe is fixed vertically as usual, but the lower portion, or that
which enters or dips into the sealing liquid is made separate from the upper part
and of a larger diameter so as to form a short sleeve outside the said upper part.
The lower end of the upper part-is-formed-or-fitted externally in any convenient
manner with a collar or a flange. The lower portion or sleeve is provided
internally at the upper end with a flange or collar, which when the sleeve is down
will rest on the collar or flange on the end of the upper portion of the dip-pipe,
and form a practically gas-tight joint.
The raising of the sleeve is effected by a lever or a pair of levers or fingers
placed outside the dip-pipe, and connected to the sleeve by a rod or a pair of rods
or links, so that the levers and their connections will not form any obstruction to
the flow of gas through the pipe or sleeve nor present any lodgement within the
same on which tar might be deposited.
These levers are attached or mounted in any convenient manner to an axle and
project through an opening in a suitable box open to the hydraulic main and
conveniently secured thereto, such openings being closed by the axle which thus
prevents any escape of gas. The axle is maintained closely in position by a cotter,
which permits of its being readily removed, or it may be otherwise secured in its
bearings.
To the outer arm of the levers, or the extension thereof beyond the axle, may be
connected a rod or chain to be placed within convenient reach of the attendant, so
that the dip-pipe of any particular retort may be sealed or unsealed as desired.
To illustrate the foregoing description of the construction and method of working
we proceed to describe the drawings hereunto annexed, the same letters being used
to indicate corresponding parts in each figure.
Fig. 1. is a front elevation of the Dip-pipe with a sectional view of the sleeve,
and of the lower end of the main portion of the dip-pipe.
Fig. 2. is a side elevation of the dip-pipe with a sectional view of one of the
boxes or chambers outside the dip-pipe shewing the lever arms within the said
box.
Fig 3. is a plan of the same also partly in section.
The flange A is provided to rest upon and connect to the top of an hydraulic
main in the usual manner and the sleeve B is allowed to dip into the sealing liquid,
within the bydraulic main, when extended or lowered as shewn in the drawing, so
that the collar C, formed preferably with a depending edge, on the inside of the
sleeve bears upon the collar D on the outside of the pipe E and both of these

page_text: collars being truly faced and adjusted together, the gas is prevented from any
passage between their bearing surfaces.
In order to lift the sleeve out of the sealing liquid the lever arm F is depressed
which causes the opposite arms G inside the boxes H to elevate the sleeve by
means of the connecting rod I as may be required; and when the lever arm F is
released the sleeve falls by its preponderating weight to the extended position as
shewn in the drawing and bears upon the collar as before described.
The axle J to which the lover arms are attached is accurately turned and fitted
so as to completely close the aperture between its bearings in the boxes H within
which the lever arms G range.
The cotter K is used with the block L interposed to keep the axle close up to
its bearings and upon the said apertures or the block may be dispensed with and
the cotter be made so as to hear directly upon the axle. In either case the cotter
admits of ready adjustment or removal but any other suitable method of securing
the axle in its bearings may be employed.
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 construction of a dip-pipe of a Telescopic form having an outer pipo or
sleeve arranged outside the main portion of the dip-pipe, so as to be readily raised
or lowered by means of appliances outside the dip-pipe and so as to form a gas-
tight joint with the inner pipe when the said sleeve is lowered or fully extended in
the manner hereinbefore described.
2. The combination of a box or chamber in open connection with the hydraulic
main but exterior to the dip-pipe with a lever (for lifting the sleeve) so that the
said box encloses the arm of the lever connected with the sleeve throughout its
range, and the axle of the lever enters between the bearings of the axle, which
form the fulcrum to the lever.
3. The general combination of the construction and appliances as herein before
described, or any modification thereof for making dip-pipes to be used for gas or
any other purpose.
Dated him 10th da.. of Tuna 100
ALEXANDER WILSON.
ROBERT PORTER.