Improvements in Machinery for Compressing or Exhausting Atmospheric Air or other Gases.
Year: 1899

page_text: Date of Application, 20th Mar., 1899
Complete Specification Left, 15th Dec., 1899-Accepted, 3rd Feb., 1900
PROVISIONAL SPECIFICATION.
Improvements in Machinery for Compressing or Exhausting
Atmospheric Air or other Gases.
I, GEORGE HERBERT WAILES, Mechanical Engineer, of 258, Euston Road, London,
N.W., do hereby declare the nature of this invention to be as follows:-
My invention has reference to compressing or exhausting atmospheric air or
other gases by means of a pump worked by a shaft revolving at a high speed
and suitable for connecting directly to electric motors or engines or turbines.
I employ pumps arranged radially to a rotating shaft and fitted with pistons
& connecting rods.
The air is admitted through holes in the end covers of the cylinders and
expelled through side openings communicating with a delivery passage common
to all the cylinders.
The inlet and outlet valves consist of thin metal dises of such a size as to com-
pletely cover the holes through which the air passes, these discs are held by
their centre portions.
The whole pump can be enclosed in a casing in which is an opening for the
air supply to the pump this opening I can close automatically by a valve and piston
operated when the air is compressed to any desired pressure which pressure I can
control by means of a spring acting on the said valve & piston.
When the pump is used as an exhauster the space from which the air or gas is
to be exhausted is connected to the above mentioned suction inlet in the outer
casing.
I may if I wish place a water jacket round the whole or parts of the pump.
1000
Improvements in Machinery for Compressing or Exhausting
Atmospheric Air or other Gases.
I, GEORGE HERBERT WALLES, of 258, Euston Road, London, in the County of
Middlesex, Mechanical Engineer, do hereby declare the nature of this invention
and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
My invention has reference to compressing or exhausting atmospheric air or
other gases by means of a pump worked by a shaft which may revolve at a high
speed if required and which is suitable for connecting direct to electric motors,
steam engines or turbines,

page_text: I employ pumps arranged radially to a rotating shaft and fitted with pistons
and connecting rods.
The air is admitted through holes in the. end covers of the cylinders and
expelled through side openings, communicating with a delivery passage which
may be common to all.
The inlet and outlet valves consist of thin discs of such a size as to completely
cover the holes through which the air passes, these discs are held by their centre
positions. The whole pump can be enclosed in a casing in which is an opening
for the air supply to the pump, which opening may be closed automatically by a
valve and piston operated when the air is compressed to
any desired pressure; this
pressure can be controlled by means of a spring in connection with the inlet valve
on the casing.
In order that my invention may be fully understood and ascertained "I append
drawings in which:-
:―
Fig. 1 is a longitudinal vertical section of a pump.
Fig. 2 is a transverse vertical section of same.
Figs. 3 and 4 are enlarged views of the inlet valve and seating.
Three cylinders are here shewn each being similar to the others, and indicated
by the letter A. These are formed integrally with a casing B which encloses a
central chamber C in which the crank shaft 1) rotates in a bearing E (or bearings)
formed in the casing. Passages & may be formed either integrally in the casing,
or attached thereto for the purpose of conveying the compressed or exhausted air
to an outlet H common to all the cylinders.
Access is obtained to the crank crank shaft, and pistons by removing the cover T
which is attached to one side of the casing.
The outer end of each of the cylinders A is closed by a cover K which is
secured to the cylinder, and perforated by a number of holes a which form air
passages. These are disposed in a circle and are covered by the inlet valve I,
which is held in position by the central screw stop i; this being so adjusted
as to allow the valve but a slight lift. The side openings m form
the air outlet and are covered by the valve M which is similar to
the inlet valve I, and is held in position by the adjustable screw
stop m¹.
The air passes through the openings m and through the
port g to the passages G and air outlet H. The pistons N may be
of any suitable description and each of the three is connected to the same crank
pin by a connecting rod P which is pivoted to its pistons by a pin n. The
orank shaft D extends out through the side of the casing, and may either be
coupled direct to an electric motor, high speed engine or turbine; or it may have
a pulley or wheel fixed to it by which it may be driven.
The operation is as follows:
Upon the instroke of either of the pistons N, the inlet valve I is drawn open
and air passes through the holes a round the edge of the valve and into the
cylinder. Upon the return stroke of the piston this is compressed and forced
through the passage m (lifting the valve M) and port g to the passage G and air
outlet H. The slight lift of the valves, and the shortness of the air passages
enables the pump to be driven at a very high speed, while obtaining great efficiency.
Moreover the arrangement of parts is such as to leave practically no clearance
spaces between the valve and the piston.
The cylinders A and casing B containing the whole of the mechanism may be
surrounded by an outer casing S, either formed integrally with or attached rigidly
to the enclosed cylinders A and casing B. The space between may be filled with
water for the purpose of preventing excessive heat when working; in such cases
an inlets and an outlet is provided for the purpose of securing a flow of water
through the casing.
When the water casing is employed the openings to the air inlet valves are
carried through the outer casing.

page_text: 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:
1. A pump for air and other gaseous fluids in which two or more cylinders are
radially disposed in such manner that each is coupled to the same crank by a
suitable connecting rod; and in which the inlet valves are attached to the cylinder
ends in such manner as to secure easy access of the air to the interior of the
cylinders, the outlet valves being disposed so as to cover outlet passages in the
side of the cylinders near their ends; the valves being arranged so as to have but
slight lift thus securing very efficient action at very high speeds, substantially
as shewn and described.
2. In pumps for air and gaseous fluids the combination of the cylinders A con-
nected to the casing B, the pistons N, the connecting rods P, the crank shaft D,
the crank pin O, the covers K, the air passages a, the valves I, the passages m,
the valves M, the passages 9 and G and the outlet H, substantially as shewn and
described.
3. In pumps for air and gaseous fluids the combination of the cylinders A con-
nected to the casing B, the pistons N, the connecting rods P, the crank shaft D,
the crank pin O, the covers K, the air passages a, the valves I, the passages m,
the valves M, the passages and G, the outlet H and the casing S, substantially
as shewn and described.
Dated this 15th day of December 1899.
WILLIAM J. MUNDEN,
75, Chancery Lane, Agent for Applicant.