Improvements in Valves for Use in connection with Purifiers employed in Gas Works.
Year: 1895

page_text: Date of Application, 30th Jan., 1895
Complete Specification Left, 30th Mar.,. 1895-Accepted, 11th May, 1895
PROVISIONAL SPECIFICATION.
Improvements in Valves for Use in connection with Purifiers
employed in Gas Works.
'I, FREDERICK SOUTHWELL CRIPPS of 27 Great George Street. Westminster,
in the County of Middlesex, Civil and Mechanical Engineer, do hereby declare the
nature of this invention to be as follows :-
This valve is so constructed as to admit of byepassing any layer or layers of
purifying material, in the apparatus known as purifiers in gas works.
It is designed to be fixed at one or more of the lower tiers of sieves or grids
carrying the purifying material, so that in the case of excessive back pressure being
given by any particular layer the valve can be opened and render inmediate relief
by byepassing that layer only. Then instead of having to force the gas through
the purifying material, which has become used up, choked and hard, it can be passed
direct to the fresher and more open material above; thereby obviating the necessity
of changing the purifier simply on account of the material in the lower portion-being
choked.
The valve is fixed inside the purifier, but it is actuated and worked entirely from
the outside of the purifier. It consists essentially of (3) three parts, viz. the
body, the valve, and the gear for opening and shutting it. But in order to render
the nature of my invention clear I append a sheet of illustrative drawings, of
which
Fig. 1 is a sectional elevation, with the gearing situated above the valve; one
half shows the open ways through the valve and seating, the other half the solid
webs of the valve and seating.
Fig. 2 is a plan, showing valve open for passage of gas.
Fig. 3 is a section, showing the gearing when placed below the valve.
Figs. 4 and 5 are elevations, showing the manner of fixing same in purifiers.
The body A is a rectangular or circular pipe casting, prepared with flanges B for
fixing to the side plate of purifier in such a way as not to damage or weaken the
same. The body is of about the same depth as the layer of purifying material
through which it passes and around its bottom edge a shelf C. is cast to carry the
sieves abutting against it. The upper end of the body is divided into several
segments half of which are open D and half are solid alternately, and in the
centre is a boss F for carrying the valve spindle. The upper edges and surfaces G
are faced to form the seating for the valve to work upon.
The valve H, is a circular disc or grid valve of cast iron turning on a centre
-pin I, and having divisions alternately open D and closed E being in this respect
the exact counterpart of the faced body on which it works. A lip J. projects.
downwards so as to clasp the circular face and seating on which the valve works
and exclude grit &c. from the working faces G. The under surfaces and lip are
faced and it is provided with means for lubrication in all working parts.
In addition to the weight of the valve keeping it down on its face a volute
spring K surrounds the centre spindle causing increased pressure between the
surfaces and insuring perfect gas tightness so that gas shall not pass the valve when
it is shut. The gearing for actuating. the valve consists of a bevel pinion L and
wheel or segment M. The wheel or segment is either cast solid on the rim of the
upper surface of valve or is a separate casting fixed below the valve as in Fig. 3.
In the latter case the valve and wheel or segment are both fixed to the centre
ΓΕΙ
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page_text: spindle I. The pinion is turned by a short spindle N passing through a small
stuffing box and gland O on the purifier side plate, and a guide bracket or boss cast
on the body.
A quarter turn of the valve will open or shut it. Stops are cast on the valve
and body to indicate when the valve is fully open or shut. It is constructed and
fitted so that no faces are uncovered or in contact with or exposed to the action of
the gas or purifying material when the valve is either open or shut.
The depth of the body Z is made to suit the pitch of the sieves, or the depth of
purifying material in the purifier.
Dated this Twenty-ninth day of January 1895.
Improvements in Valves for Use in connection with Purifiers
employed in Gas Works.
I, FREDERICK SOUTHWELL CRIPPS of 27 Great George Street, Westminster,
in the County of Middlesex, 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 is so constructed as to admit of byepassing any layer or layers of
purifying material, in the apparatus known as purifiers in gas works.
It is designed to be fixed at one or more of the lower tiers of sieves or grids
carrying the purifying material, so that in the case of excessive back pressure being
given by any particular layer the valve can be opened and render immediate relief
by byepassing that layer only.
The valve is fixed inside the purifier but it is actuated and worked entirely from
the outside of the purifier. It consists essentially of three parts, viz. the body, the
valve, and the gear for opening and shutting it. But in order to render the
nature of my invention clear I refer in the following description to the sheet
of illustrative drawings left with the Provisional Specification, and of which
Fig. 1. is a sectional elevation, with the gearing situated above the valve; one
half shows the open ways through the valve and seating, the other half the solid
webs of the valve and seating.
Fig. 2. is a plan, showing valve open for passage of gas.
Fig. 3. is a section, showing the gearing when placed below the valve.
Figs. 4 & 5. are elevations, showing the manner of fixing same in purifiers.
The body A, is a rectangular or circular pipe casting, prepared with flanges B
for fixing to the side plate of purifier in such a way as not to damage or weaken
the same.
The body is of about the same depth as the layer of purifying material
through which it passes and around its bottom edge a shelf C is cast to carry the
sieves abutting against it. The upper end of the body is divided into several
segments half of which are open D and half are solid E alternately, and in the
centre is a boss F for carrying the valve spindle. The upper edges and surfaces G
are faced to form the seating for the valve to work upon.
The valve H is a circular disc or grid valve of cast iron turning on a centre
pin and having divisions alternately open D and closed E being in this respect
the exact counterpart of the faced body on which it works. A lip J projects down-
wards so as to clasp the circular face and seating on which the valve works and
exclude grit &c. from the working faces G. The under surfaces and lip are faced
and it is provided with means for lubrication in all working parts.
In addition to the weight of the valve keeping it down on its face a volute

page_text: spring K surrounds the centre spindle causing increased pressure between the
surfaces and insuring perfect gas tightness so that gas shall not pass the valve
when it is shut. The gearing for actuating the valve consists of a bevel pinion L
and wheel or segment M. The wheel or segment is either cast solid on the rim of
the upper surface of valve or is a separate casting fixed below the valve as in
Fig. 3.
In the latter case the valve and wheel or segment are both fixed to the
centre spindle I. The pinion is turned by a short spindle N passing through a
small stuffing box and gland O on the purifier side plate, and a guide bracket or
boss cast on the body.
A quarter turn of the valve will open or shut it. Stops are cast on the valve and
body to indicate when the valve is fully open or shut. It is constructed and fitted so
that no faces are uncovered or in contact with or exposed to the action of the gas or
purifying material when the valve is either open or shut.
The depth of the body Z is made to suit the pitch of the sieves or the depth of
ourifying material in the purifier.
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 fixing of a valve inside a purifier so that it may be actuated from the
outside of the purifier while the purifier is at work.
2. The insertion of a valve through a layer of purifying material in a purifier in
such a manner that the said layer of purifying material may be byepassed when
desired by simply opening the valve.
3. The application of a circular revolving disc plate so as to form a grid valve
having alternate openings and solid webs, working on a corresponding seating of
alternate openings and solid webs; the two faces, viz. the valve and its seating,
being so matched together, that whether the valve be open or shut no part of the
surfaces shall be exposed or uncovered.
4. Clasping and projecting the seating by a projecting lip on the underside edge
of the valve face.
5. The keeping of the valve tight against its face by a volute spring around the
spindle in the centre boss.
Dated this Twenty-ninth day of March 1895.
FREDERICK SOUTHWELL CRIPPS.