Year: 1899

page_text: SAMUEL PRICE BOWEN, 64, Princes Road, Middlesbrough, County York,
Engineer, do hereby declare the nature of this invention to be as follows:-
This valve consists of three parts, consisting of two short cast iron pipes with
flanges each end, one of these flanges to be of such a shape, that when both are
bolted together a space is left between them for a plate to move in. This plate
to be of such a shape that it contains a hole equal to the area of the pipe, also
a plain part sufficient area to cover pipe & this plate to work on pin fixed at a
point through the flanges that come together so that when plate is moved it
makes a radial motion from said pin thereby cutting off the gas or opening for
free passage of gas & at same time being perfectly gas tight.
I, SAMUEL PRICE BOWEN, of 64, Princes Road, Middlesbrough, in the County of
York, 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: -
It relates to a valve for controlling the flow of gas from coke ovens to plant
for the extraction of the bye products from the gas or to other places where it
may be required.
It consists of interposing a thin metallic plate between the flanges of two pipes,
such plate or slide having a hole through it near one edge, of the same size as
the bore of the pipes, and having sufficient blank plate remaining to cover the
bore of the pipe when the slide is moved radially upon a pivot bolt fixed in a
suitable position, the flanges of the pipes being so arranged as to leave sufficient
space between their faces when bolted up together to allow the slide to be moved
across them by means of a suitable handle. Thus it will be seen that when the
hole through the slide coincides with the bore of the pipes, gas can pass; but
when the slide is moved across to the opposite side, the bore of the pipes is
closed by the blank portion of the slide, and gas is prevented from passing.
Stops for the slide are provided at each side of one or of both flanges, to
indicate when the valve is fully open, or completely closed.
These stops may be
cast on the flange, having bolts passing through them, or they may be collar
bolts, and these bolts and stops together with the pivot collar bolt on which

page_text: the slide turns, form the means of fixing the two flanges firmly together at the
proper distance apart to allow of the working of the slide.
Leakage of gas between the slide and the faces of the flanges is prevented by
the tar deposited upon them from the gas.
In the accompanying drawing, Figs. 1 and 2 show respectively in cross
section and elevation (with one flange removed) a convenient form in which this
valve may be arranged.
Gas from a coke oven entering the pipe 1, forming one portion of the body
of the valve passes through the hole in the slide 2, into the pipe 3, which forms
the other portion of the body of the valve, and so into a collecting main.
Fig. 2, shows the valve full open, the portion of the slide 2, to which the
handle 4, is fixed being against the stop 5.
In pulling the handle 4 across till the slide 2, comes in contact with the
stop 6, on the opposite side, the slide 2, turns upon the pivot collar bolt 7,
and the blank portion of the slide 2, closes the bore of the pipe as shown in
dotted lines. The stops 5, and 6, and the collar of the pivot collar bolt 7,
form three distance pieces which keep the flanges 8 and just sufficiently apart
near the bore of the pipes to allow the slide 2, to move between them when
they are bolted up together by bolts 10, and 11, passing through the stops 5,
and 6, and by the pivot collar bolt 7.
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
I claim is
A form of valve for controlling the flow of gas from coke ovens, consisting
of a metallic pivotted slide plate interposed between the flanges forming the
joint between two pipes, such pivotted slide plate having a hole through it near
one edge, which can be set to coincide with, and is approximately the same
size as, the bore of the pipes, and having sufficient blank plate remaining to cover
the bore of the pipes when that portion of the slide plate is moved across the bore
of the pipes substantially as herein described.
Dated 01 1
T 1
1000