IMPROVEMENTS IN VALVES FOR PUMPS, AND OTHER APPARATUS."
Year: 1880

page_text: LETTERS PATENT to Nelson Foley, of Jarrow on Tyne, in the County of
Durham, Engineer, for an Invention of "IMPROVEMENTS IN VALVES FOR
PUMPS, AND OTHER APPARATUS."
PROVISIONAL SPECIFICATION left by the said Nelson Foley at the Office
of the Commissioners of Patents on the 31st December 1880.
NELSON FOLEY, of Jarrow on Tyne, in the County of Durham, Engineer.
"IMPROVEMENTS IN VALVES FOR PUMPS, AND OTHER APPARATUS."
This Invention has for its object to construct valves for pumps and other
apparatus in an improved manner, and so as whilst being made of metal and
baving the durability of that material to be pliant and elastic like rubber valves.
The improved valves, amongst other advantages, also give a comparatively large
amount of opening or passage with a small movement.
In carrying out the Invention a suitable metal or metallic compound of a
sufficiently elastic nature, such as brass or bronze, is made in the form of a coil, or
combination of two or more coils, which may be spiral or volute-like, so as to be
capable of lying flat, or helical, or conoido-belical, or of some other intermediate form.
The coil or coils may be formed by coiling or bending a wire, or rod, or band of a
round, square, rhomboidal, or other suitable section, into a flat, cylindrical, conoidal,
or other suitable form or contour, or by forming spiral or helical cuts through a
flat, cylindrical, conoidal, or other suitably shaped piece of the metal or metallic
compound. A valve may consist of single ply of the coil or coils, in which case
the convolutions should fit closely together when closed; or the valve may consist
of two plies, in which case one ply is so placed relatively to the other that the
solid parts of one cover the interstices of the other. When the valve is of a flat
or conoidal contour it may be fixed at its centre, having its edge free to rise as
with ordinary rubber valves, allowing the water or other fluid to pass at the edge
or at the edge and between the convolutions of the coil, or it may be fixed at its
circumference with the centre free to move in one direction, and when opening,
the convolutions of the coil or coils will separate to allow the water or other fluid
to pass. When the valve is cylindrical, one end is fixed, and the other end has
fixed to it a head or disc, pressure on which will tend to elongate the helix, and
thereby separate its convolutions. The improved valves may also be arranged to
open in other ways, and whilst it is preferred to give a circular form to them, they
may be made oval or even square or polygonal.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Nelson Foley in the Great Seal Patent Office on the 28th June
1881.
NELSON FOLEY, of Jarrow on Tyne, in the County of Durham, Engineer.
" IMPROVEMENTS IN VALVES FOR PUMPS AND OTHER APPARATUS.”
My said Invention has for its object to construct valves for pumps and other
apparatus in an improved manner, and so as whilst being made of metal and
having the durability of that material to be pliant and elastic like rubber valves.
My improved valves, amongst other advantages, also give a comparatively large
amount of opening or passage with a small movement.
In carrying out my Invention a suitable. metal or metallic compound of a
Bufficiently elastic nature, such as brass or bronze, is made in the form of a coil or a
combination of two or more coils, which may be spiral or volute-like, so as to be
capable of lying flat or helical, or conoido-helical, or of some other intermediate
form.
And in order that my said Invention and the manner of performing the same
may be properly understood, I hereunto append a Sheet of explanatory Drawings
to be hereinafter referred to and representing various examples of my improved
valves, each being shown as fixed to its valve seat.
Figure 1 of the accompanying Drawings is a plan of a valve made of a single flat
coil of round wire. Figure 2 is a section corresponding to Figure 1 and showing
the valve shut, and Figure 3 is a section showing the valve open.
Figures 4 and 5 are a plan and section of a valve made of two flat coils of round
wire. The two coils are placed relatively to each other, so that the convolutions of
the upper coil cover the lines between the convolutions of the lower coil.
Figures 6 and 7 are a plan and section of a valve made of two plates of thin
metal cut or shaped to form volute-like coils, the convolutions of the upper coil
covering the divisions between the convolutions of the lower coil.
The valves shown in Figures 1 to 7 all open in the same manner or nearly so,
being in each case fixed at the centre and free to rise or open at the circumference ;
they might however be fixed at the circumferences and open by the separation of
the convolutions and lifting of the centres.
Figures 8 and 9 are a plan and section of a valve made of a conoido-helical coil.
This valve is fixed at its circumference, and in opening the centre rises and the
convolutions of the coil separate from each other so as to let the fluid pass between
them. A valve of the same general form but with the coil of a rhomboidal or
other suitable section may be fixed at the centre and be free to open at the
circumference.
Figures 10 and 11 are a plan and section of a valve having a helical coil in a
cylindrical form fixed at one end to the valve seat and having fixed at its other
end a flat head or disc, pressure on which will tend to elongate the helix and
thereby separate its convolutions.
The coil or coils employed for any of the modifications may be formed by bending
a wire, or rod, or band of a round, square, rhomboidal, or other suitable section,
into a flat, cylindrical, conoidal, or other suitable form or contour, or by forming
spiral or helical cuts through a flat, cylindrical, conoidal or other suitably shaped
piece of the metal or metallic compound. My improved valves may be arranged to
open in various ways, and whilst I prefer to give a circular form to them they may
be made oval, or even square or polygonal...
If considered desirable, guards or stops may be fitted in connection with any of
the valves in order to limit the extent of movement when opening.

page_text: Having thus particularly described my said Invention, and the manner of
performing the same, I have to state that I do not restrict myself to the precise
details herein described or delineated, but that what I believe to be novel and
original, and claim as the Invention secured to me by and in terms of the herein-
before in part recited Letters Patent is,
The making of a valve for a pump or other apparatus of a suitable metal in the
form of a coil, or a combination of two or more coils, such coil or coils being spiral
or volute-like, so as to be capable of lying flat, or helical, or conoido-helical, or of
an intermediate form, and arranged and operating substantially as herein before
described.
In witness whereof, I, the said Nelson Foley, have hereunto set my hand and
seal, this Twenty seventh day of June, in the year of our Lord One
thousand eight hundred and eighty one.
NELSON FOLEY. (LS.)