Improvements in Valves.
Year: 1891

page_text: Date of Application, 27th May, 1891
Complete Specification Left, 29th Feb., 1892-Accepted, 2nd Apr., 1592
PROVISIONAL SPECIFICATION.
Improvements in Valves.
1, JAMES COCHAR HALL of The Hatton Engineering Company, Baldwins
Gardens, Grays Inn Road, County of Middlesex, Engineer, do hereby declare the
nature of this invention to be as follows:--
This invention relates particularly to stop valves for high pressures but is
applicable to other kinds of valves. The invention has reference to providing a
seating for the valve to bed upon which seating can be removed at pleasure.
Hitherto where as in cast iron valves a separate seating usually of brass or gun
metal has been employed it has been made a permanent fixture in the body of the valve
and consequently if it became necessary to remove it it had to be either bored.out
in the lathe which necessitated removing the whole casting from its connections
with the pipes or the seating was so roughly handled in its removal as to be.
permanently damaged and probably also it so damaged the cock body that it would
even then require to be re-turned up before a new seating could be supplied.
Now by my invention provide a seating which can be easily removed and
immediately replaced with another without disconnecting the valve from the pipes.
In carrying out my invention 1 may employ any well known form of valve chest
or cock body in which I provide a tapered opening or seating into which the seating
proper is to be introduced; the scating proper which may be of the same or of a
different metal or material is turned to a similar taper to that of the above described
opening into which it is merely placed with or without moderate pressure so as to
make a tight joint between the two faces. The pressure of the valve upon the seat
proper will be sufficient to maintain it in its position and it will thus be seen that at
It is desirable
any time the seat can be easily removed and a new one substituted.
that the removable seating should be a plain taper the whole way up neither having
a projecting flange as is now commonly used nor an annular recess for packing as is
also commonly employed.
Preferably the taper would be so arranged that the weight of the seating would
tend to keep it in position but if preferred and the construction of the valve chest
was such as to perimit of it or require it the taper could be in the reverse direction
the arrangement of the valve being if necessary modified to suit this.
collar or equivalent device if necessary may in any case be employed to prevent the
movable seating from coming out of its seat.
Dated this 27th day of May 1891.
A mut or
W. P. THOMPSON & BOULT,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Valves.
I, JAMES COCHAR HALL, of The Hatton Engineering Company, Baldwins
Gardens, Grays Inn Road, County of Middlesex, 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 invention relates particularly to stop valves for high pressures but is
applicable to other kinds of valves. The invention has reference to providing a
seating for the valve to bed upon which seating can be-removed at pleasure.
Hitherto where as in cast iron valves a separate seating usually of brass or gun-metal
has been employed it has been made a permanent fixture in the body of the valve
ID 27

page_text: and consequently if it became necessary to remove it, it had to be either bored out
in the lathe which necessitated removing the whole casting from its connections
with the pipes or the seating was so roughly handled in its removal as to be
permanently damaged and probably also it so damaged the cock body that it would
even then require to be re-turned up before a new seating could be supplied. Now
by my invention I provide a seating which can be easily removed and immediately
replaced with another without disconnecting the valve from the pipes.
In the accompanying drawings,-
Fig. 1 is a view partly in elevation and partly in section of a valve constructed
according to this invention and Fig. 2 is a view of the seating removed from the
valve.
In carrying out my invention as shown in the drawings I may employ any well-
known form of valve chest or cock body A in which provide a tapered opening or
seating A into which the seating proper B is to be introduced; the seating proper
which may be of the same or of a different metal or material is turned to a similar]
taper to that of the above described opening A' into which it is merely placed with
or without moderate pressure so as to make a tight joint between the two contiguous
faces of the scating B and surrounding wall or surface of the taper opening A.
The pressure of the valve Cupon the seat proper B will be sufficient to maintain it
in its position and it will thus be seen that at any time the scat B can be easily
removed and a new one substituted. It is desirable that the removable seating B
should be a plain taper the whole way up neither having a projecting flange as
is now commonly used nor an annular recess for packing as is also commonly
employed.
Preferably the taper would be so arranged that the weight of the seating B
would tend to keep it in position but if preferred and the construction of the valve
chest was such as to permit of it or require it the taper could be in the reverse
direction the arrangement of the valve being if necessary modified to suit this.
mut or collar or equivalent device if necessary may in any case be employed to
prevent the movable seating from coming out of its seat.
A
When it is desired to substitute a new for a worn seating B the upper part A
of the valve casing along with the valve C and spindle Ď is removed, the old
seating being also removed in any convenient manner; the new seating may then
be laid in its opening A' by the fingers of the workman effecting the repairs, and
the upper part A² replaced. It will then be sufficient to screw the spindle D down
to secure the seating B, in proper position in the opening A'.
The same process will be adopted when fitting a seating B into a new valve.
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 1.
claim is,
1. In a screw valve or stop cock fixing the valve seating by screwing the valve
down upon it by means of the valve spindle substantially as described.
2. In a screw valve or stop cock the combination with the cock body of a
separate seating inserted after it has been turned and finished substantially as
described.
3. A cock or valve body with a separate seating which has not been turned or
faced
up after it is inserted.
Dated this 29th day of February 189
JAMES COCHAR HALL,
W. P. Thompson & Boult,
Agents for the Applicant.