Pumping, and similar Purposes.
Year: 1885

page_text: Pumping, and similar Purposes.
I, THOMAS WILLIAM BEVERLEY 224, Edmund Road, Sheffield in the County of
York Engineer do hereby declare the nature of my said invention for IMPROVE-
MENTS IN APPARATUS FOR BLOWING, VENTILATING, EXHAUSTING, PUMPING, AND
SIMILAR PURPOSES, to be as follows:-
My invention of improvements in apparatus for blowing, pumping and other
similar purposes for which such apparatus is used, has for its object to produce
more efficient machines, to simplify the construction by dispensing with many of
the usual details of such machines, and thereby reduce the cost of manufacture.
It consists (when arranged as a blower) of a circular or disc shaped receiving
chamber, supported upon suitable standards which also form the bearings for the
driving shaft and crank.
Pairs of cylinders are placed (radially) opposite to each other, upon or through
the periphery of the said chamber, one end of the cylinder opening directly into
the interior of the chamber, the opposite end being provided with a simple arrange-
ment of valve to admit air, or other fluid.
The shaft projects from either one or both bearings and is provided with
the usual driving pulleys, flywheel, or other means of driving by hand or steam
power.
The crank which revolves inside the receiving chamber, is preferably made in
parts, consisting of two discs and an intermediate crank pin, on which I fit one or
more slide blocks, to work in a central cross slide in each of the double piston rods.
At each end of each piston rod is a piston, with an inlet valve of very simple
arrangement to permit air to pass in one direction only, that is, into the air
chamber. It will thus be seen that one piston rod carries two pistons which work
in opposite cylinders, being actuated by the crank working in the cross slide before
mentioned.

page_text: The cylinders are placed at equal distances from each other round the periphery
of the air chamber to equalise the strain upon the crank, and no two pistons are
in the same position in the cylinders at the same time.
Thus as each piston leaves the valve end of the cylinder, it draws in air, and
during the return stroke it compresses it and forces it through the valve into the air
chamber, to which one or more outlet pipes may be fixed in any desired position..
The cylinders are preferably enclosed in the air chamber, the valve end only
being visible outside.
When the apparatus is required for pumping some modifications of the details
must be made, the principle remaining the same,

page_text: Pumping, and similar Purposes.
I THOMAS WILLIAM BEVERLEY 224 Edmund Road, Sheffield in the County of
York Engineer do hereby declare the nature of my invention for IMPROVEMENTS
IN APPARATUS FOR BLOWING, VENTILATING, EXHAUSTING, PUMPING, AND SIMILAR
PURPOSES and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement, that is to say:-
My invention of improvements in apparatus for blowing, pumping and other
like purposes for which such apparatus is or may be used has for its object to
produce a. more efficient machine, and by dispensing with many of the details
usual in such machines, to thus simplify the construction, and reduce the cost of
manufacture.
In order that my invention may be clearly understood, I annex a sheet of
drawings to illustrated this my Specification; and to enable the same to be carried
into practice; it represents a blower made according to my invention, one side
being removed, and part being shown in section.
It consists of a circular or disc-shaped air-receiving chamber A, supported upon
suitable standards or base B, which parts also carry the bearings of the driving
shaft C, driven by means of pulleys and a belt in the usual manner.
The driving shaft terminates inside the air-chamber A, and carries a disc or
crank plate D, and crank pin E; pairs of cylinders F, are placed in a radial
position, and opposite to each other, upon or partly through the periphery of the
chamber A, projecting into the interior. One end opeus directly into the air
chamber, and the opposite end is provided with a simple arrangement of valve to
admit the air into the cylinder; G, G, are air-openings through the metal, H is a
leather disc or clackvalve, I a metal stop for the leather H to strike against
when open,
The piston J, is also provided with a similar valve and stop K and L, and is
extended to form a double piston as shown, so arranged that when one piston is
at the bottom of its cylinder, the opposite piston is at the mouth of the opposite
cylinder.
The pistons are preferably cast in one piece, and are connected to the crank by
the connecting rods M and N. The crank may be constructed with two discs
connected by the crank pin, and having a bearing in the opposite side of the air-
chamber, namely the one that has been removed in the drawing.
The outlet O, may be placed in any convenient position, or more than one may
be used, if required.
P is a pressure regulator and escape valve, which can be weighted so as to
regulate the pressure of the air in the chamber, and permit its escape when it
exceeds the limit arranged for.
The cylinders (of any desired number) are placed at equal distances apart, so as
to equalise the strain upon the crank and other parts of the mechanism, and they
are so arranged that no two pistons are in the same position in the cylinders at
the same time.

page_text: It will be seen from the above description and on reference to the drawing, that
as euch piston leaves the valve-end of the cylinder, it draws in air through the
openings or ports G, and on the return stroke, the air being compressed, closes the
valve H, and forces its way through the piston valve K, into the air-chamber A,
from whence it passes through the outlet O.
When used as a pump,.the suction pipes are attached to the ends of the cylinders,
and some of the details are of necessity modified, the principle however is not
departed from.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is :-
In the construction of apparatus for blowing, ventilating, exhausting, pumping
and similar purposes, the arrangement of any desired number of cylinders opening
into an enclosed chamber having pistons arranged and operated in the manner
substantially as hereinbefore described and illustrated.
2nd In blowing apparatus the arrangement and combination of the air-chamber A,
the cylinders F, and pistons J, driven by any suitable mechanism for the purpose
specified, and substantially as described and illustrated.