IMPROVEMENTS IN VALVES
Year: 1877

page_text: LETTERS PATENT to Frederick William Shorey, of Poplar, in the County of
Middlesex, for the Invention of "IMPROVEMENTS IN VALVES." Partly a
communication from abroad by Joseph Clark, of Bussorab, in Turkish Arabia.
Sealed the 3rd May 1878, and dated the 9th November 1877.
PROVISIONAL SPECIFICATION left by the said Frederick William Shorey at
"IM-
the Office of the Commissioners of Patents on the 9th November 1877.
FREDERICK WILLIAM SHOREY, of Poplar, in the County of Middlesex.
PROVEMENTS IN VALVES." Partly a communication from abroad by Joseph Clark,
of Bussorab, in Turkish Arabia.
This Invention relates chiefly to valves employed in air pumps, but is also appli-
cable to valves for circulating bilge and other pumps, and it has for its object
providing a cheap, light, and efficient substitute for the india-rubber valves ordinarily
used for those purposes, and which are liable to deterioration under the action of
the pumps and under the influence of oils.
In carrying out this Invention in order to effect this object it is proposed to con-
struct the valves of layers of cotton, cloth, or other suitable soft fabric or fibrous
material connected together by a solution of india-rubber or other suitable adhesive
material, so as to form a core which is covered, encased, or sheaved in india-rubber,
or a compound of india-rubber and other materials, the whole being subsequently
vulcanized in the usual or well-known manner.
In the case of air pump valves, the india-rubber may be mineralized in order to
render it less susceptible to the deleterious action of oil.
By means of this Invention not only is the valve rendered more capable of resisting
the wear and tear of the pump, but the liability to the undue swelling which fre-

page_text: quently causes the rupture of the valve is obviated, since in addition to the bulk of
the india-rubber being reduced, the fibrous core after the lapse of a certain time has
a contractile effect under the influence of moisture which counteracts any tendency
to the swelling of the india-rubber casing.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by the
said Frederick William Shorey in the Great Seal Patent Office on the 8th May
1878.
FREDERICK WILLIAM SHOREY, of Poplar, in the County of Middlesex.
"IM-
PROVEMENTS IN VALVES." Partly a communication from abroad by Joseph Clark,
of Bussorah, in Turkish Arabia.
The said Invention 'relates chiefly to valves employed in air pumps, but is also
applicable to valves for circulating bilge and other pumps, and it has for its object
providing a cheap, light, and efficient substitute for the india-rubber valves ordinarily
used for those purposes, and which are liable to deterioration under the action of the
pumps and under the influence of oils.
In carrying out the said Invention in order to effect this object, the valves are
constructed of layers of cotton, cloth, felt, hair, or other suitable soft fabric or fibrous
material connected together by a solution of india-rubber or other suitable adhesive
material so as to form a core which is covered, encased, or sheathed in india-
rubber or a compound of india-rubber and other materials, the whole being
subsequently vulcanized in the usual or well-known manner.
The accompanying Drawing is a perspective view of a section or segment of a
disc valve constructed according to the said Invention.
a, a, are layers of cotton, cloth, felt, hair, or other suitable soft fabric or fibrous
material, which are connected together by films, b, b, of a solution of india-rubber
or other suitable adhesive material, the series of layers a, a, thus united forming a core
which is covered or sheathed in a casing c of india-rubber or a compound of india-
rubber and other materials, after which the whole is vulcanized in the usual or well-
known manner.
In the case of air pump valves, the india-rubber may be mineralized in order to
render it less susceptible to the deleterious action of oil.
By means of the said Invention not only is the valve rendered more capable of
resisting the wear and tear of the pump, but the liability to the undue swelling
which frequently causes the rupture of the valve is obviated, since in addition
to the bulk of the india-rubber being reduced, the fibrous core after the lapse of
a certain time has a contractile effect under the influence of moisture which counter-
acts any tendency to the swelling of the india-rubber casing.
Having now described and particularly ascertained the nature of the said In-
vention and the manner in which the same is or may be used or carried into effect,
I would observe in conclusion that what I consider to be novel and original, and

page_text: therefore claim as the Invention secured to me by the herein-before in part recited
Letters Patent is, constructing valves of layers of soft fabric or fibrous material
united by adhesive material, and covered, encased, or sheathed in india-rubber,
or a compound of india-rubber and other materials, substantially as and for the
purposes herein-before described.
In witness whereof, I, the said Frederick William Shorey, have to this my
Specification set my hand and seal, this Seventh day of May, One thousand
eight hundred and seventy-eight.
FREDERICK WILLIAM SHOREY. (L.S.)