IMPROVEMENTS IN VALVES, COCKS, OR TAPS FOR STEAM, WATER, GAS OR OTHER FLUID UNDER PRESSURE "
Year: 1882

page_text: LETTERS PATENT to George Furness of Manchester in the County of
Lancaster Brassfounder and Jaines Robertshaw of the same place Merchant
for an Invention of "IMPROVEMENTS IN VALVES, COCKS, OR TAPS FOR STEAM,
WATER, GAS OR OTHER FLUID UNDER PRESSURE
"
PROVISIONAL SPECIFICATION left by the said George Furness and James
Robertshaw at the Office of the Commissioners of Patents on the
2nd November 1882.
GEORGE FURNESS of Manchester in the County of Lancaster Brass Founder and
JAMES ROBERTSHAW of the same place Merchant "IMPROVEMENTS IN VALVES,
COCKS OR TAPS FOR STEAM, WATER GAS, OR OTHER FLUID UNDER PRESSURE
"
The Invention relates to Improvements in the construction of valves cocks or
taps for steam water gas or other fluid under pressure and of the class or type
designated lifting valves in which the valve is raised clear off the seat by the power
of a screwed spindle, the valve acting in connection with a port or aperture so as
to permit or prevent the passage of a fluid through the port or passage which it
guards. The valve is made separate from the valve spindle and of brass and
turned with a recess into which any suitable composition as for example white
metal or vulcanite-fibre is filled in which makes a tight packing when the valve is
screwed down onto the valve face. The spindle of the valve is screwed at one end
for connection with the valve. The body or valve casing is cast in two parts or
sections and connected together at about their central line so that ready access is
obtained to the valve and valve seating without uncoupling the valve casing from
its fixed position. The valve seating is extended little above the plane of the
Price di

page_text: bottom flange, in order that it may allow of wear by grinding or filing the valve
seat The valve and valve seat may be flat or conical and the valve made to fit in
some cases the outer in lieu of the inner periphery of the said seating. The valve
when lifted adunits of a clear thoroughfare for fluid. The spindle of the valve
may be mounted to act either in a horizontal or vertical position as may be
required
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said George Furness and James Robertshaw in the Great Seal Patent
Office on the 2nd May 1883.
GEORGE FURNESS of Manchester in the County of Lancaster Brass founder and
-JAMES ROBERTSHAW of the same place Merchant "IMPROVEMENTS IN VALVES,
COCKS OR TAPS, FOR STEAM, WATER, GAS OR OTHER FLUID UNDER PRESSURE?”
The Invention relates to Improvements in the construction of valves, cocks, or
taps for steam, water, gas, or other fluid under pressure, and of the class or type
designated lifting-valves in which the valve is raised clear off the seat by the
power of a screwed spindle, the valve acting in connection with a port or passage, so
as to permit or prevent the passage of a fluid through the port or passage which it
guards. The valve spindle may be vertical or horizontal as may be required:
In order that the Invention may be more fully understood we have caused to be
appended hereunto a sheet of Drawings marked with letters of reference to which
reference will now be made:
Figs 1. and 2. represent an Elevation and Plan respectively of a Valve constructed
in accordance with our Invention; Fig 3 is a vertical section thereof; Fig 4. is a
plan of the body of the valve with its bonnett, and screwed spindle removed;
Fig 5 represents a cross section of a valve with flat face; Fig 6. represents a cross
section of a valve having a recess into which any suitable substance or material
can be filled-in, as for example, white metal, asbestos, vulcanite fibre or other
substance or material The valve may be of a conical shape as shown applied in
Fig 3-The valve seating a may be cast with or formed separate from the body of
the valve. The diaphragm c of the port or passage e is extended upwards within
the bonnet, in order that when the bonnet f is removed from the body b by the
screw bolts the valve seat projects above the body b which we consider to be an
important and novel feature of our Invention. The part i Fig. 3 is a loose valve
seat fit into the recess m. The advantages arising from this construction of valve
consists principally in affording more ready acess to the seating for repairs whereby
the operation of grinding or filing is facilitated and the work can be more truly
performed than is possible in the ordinary construction of valve. Also the valve
may be renewed or the seating ground without removing the body b from its
connections. The body b may be formed with screwed ends or may be cast with
flanged ends as indicated by the dotted lines:-The valve h is cast or formed

page_text: separately from the valve spindle h' and may be of a conical shapo as shewn in
Fig 3 in which case the seating a is conically forined. We in some cases form the
valve with a flat face, or with a recessed face, the recess being filled up with white
metal i vulcanite fibre or other suitable substance or material.
Having now described and indicated the nature of our Invention we would
have it to be understood that we claim
First the combination and arrangement of parts forming the valve substantially
as and for the purpose set forth and as illustrated in the Drawings
Secondly the arrangement of valve and seating carried above the body b and
extending within the bonnet f, substantially as herein before described and as
illustrated in the Drawings
In Witness whereof we the said George Furness and James Robertshaw
have hereunto set our hands and seals this twenty eighth day of April in the
year of our Lord One thousand eight hundred and eighty three
GEORGE FURNESS
(L.S.)
Signed and sealed by the
said George Furness and
James Robertshaw. in the
presence of
H. GEARING GRANT
of the firm of Bosshardt and Grant
Patent Agents
Hopwood Avenue
Manchester
JAMES ROBERTSHAW (L.S.)