IMPROVEMENTS IN TAPS OR VALVES FOR WATER, STEAM, OR OTHER LIQUIDS OR FLUIDS
Year: 1884

page_text: I, GEORGE MAULE MARCHANT of Union Street, Huddersfield, Yorkshire, Brass
Finisher do hereby declare the nature of my invention for "IMPROVEMENTS IN
TAPS OR VALVES FOR WATER, STEAM, OR OTHER LIQUIDS OR FLUIDS" to be as
follows:-
This Invention has reference to the seating of valves and taps employed for
water, steam and other liquids or fluids.
Hitherto the seating and the valve proper have been made of the same metal as
the casing or shell of the tap or valve, but in practice it is found that the seating
becomes defective by corrosion and by the constant friction thereon of the valve
when opening and closing, causing the valves to leak.
To meet this difficulty the valve seating has been made seperate from the valve,
and screwed or otherwise fastened into its place, so that when the said valve seating
corroded and allowed a leakage to take place by the action of the water or steain,
the seating could be unscrewed and replaced by a new one.
My invention consists in making the loose seating or the valve which closes
thereon, of glass, pot, or other porcelain material or earthenware, which will resist
and not corrode by the action of water or steam passing through it.
By this means the valve and seating will be far more durable, in addition to the
cleanliness of a non-corrosive material.

page_text: "
I, GEORGE MAULE MARCHANT of Union Street, Huddersfield, Yorkshire, Brass
Finisher, do hereby declare the nature of my invention for IMPROVEMENTS IN
TAPS OR VALVES FOR WATER, STEAM, OR OTHER LIQUIDS, OR FLUIDS," and in
what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :-
This invention has reference to the seating and lid of valves and taps employed
for water, steam, and other liquids or fluids.
In order that my invention may be more fully comprehended, I horeto annex a
sheet of drawings illustrative of such invention. Fig 1 is sectional elevation of an
ordinary water tap with my improvements added thereto. A is the body of the
tap, B the stuffing box, C the lock-nut and D the valve lid all arranged in the
usual manner.
Hitherto the scating and the valve proper have been made of the same metal as
the casing or shell of the tap or valve, but in practice it is found that the seating
becomes defective by corrosion and by the constant friction thereon of the valve lid
when opening and closing, causing the valves to leak.
To meet this difficulty some taps have been made with the valve seating separato
from the valve, and screwed or otherwise fastened into its place, so that when the
said valve seating corroded by the action of the water or steam and allowed a
leakage to take place the loose seating could be unscrewed and replaced by a new
one.
By my invention, instead of forming the loose seating E of metal I now forin it
of glass, pot, porcelain, earthenware, or other non-corroding substance glazed or
otherwise, which will resist and not corrode by the action of water or other liquids
or fluids passing through it. This pot seating E I preferably enclose in a cage or
short brass tube F provided with suitable outlets a. (see Fig 2 which is plan view)
In putting the several parts together the brass tube carrying the porcelain seating
is dropped into its place, and the valve lid placed thereon; the stuffing box is then
introduced and screwed down upon the top of the cage or brass tubo which holds
it secure, making thereby a steam tight joint, and on the spindle G being screwed,
the valve lid is forced upon the seat in the usual manner.
Between the valve lid and the scating is a leather washer b, but in some cases
a porcelain valve lid c may be used instead, as shewn in Fig 3, and if required this
porcelain valve lid may be employed in connection with a tap where the seating is
provided with a leather washer, but in any case the adoption of porcelain is to
prevent corrosion of the wearing parts.
It will be obvious that the porcelain valve seat may be fixed in the bottom of
the valve instead of being fixed in the cage F. By this means the valve and
seating will be far more durable, in addition to the cleanliness of a non-corroding
material.

page_text: Although I have shewn and described my invention as applied to an ordinary
water tap, I would have it understood that it can with equal advantage, be applied
to any other description of valve.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I would have it under-
stood that I do not confine myself to any form of valve or valve seating, but what
I claim is
The formation of valve lids, or valve seatings of glass, pot, porcelain, earthen-
ware, or other non-corroding material in manner and for purposes substantially as
horein shewn and described.