IMPROVEMENTS IN INLET AND OUTLET VALVES, AND SEATS, FOR THE CYLINDERS, OR CYLINDER COVERS, OF AIR COMPRESSING OR BLOWING ENGINES AND MACHINES
Year: 1884

page_text: I EDWARD HORNBY BIRLEY, of The Old Foundry Barnsley, in the County of
York, Engineer do hereby declare the nature of my invention for IMPROVEMENTS
IN INLET AND OUTLET VALVES, AND SEATS, FOR THE CYLINDERS, OR CYLINDER
COVERS, OF AIR COMPRESSING OR BLOWING ENGINES AND MACHINES to be as
follows:-
'
An improved combination arrangement and construction of the inlet and outlet
valves, and seats used in connection with cylinders of engines or machines for
compressing or blowing air or other gases, whereby the least possible clearance
space is obtained at the cylinder ends, with also the least possible rise of the valves,
whereby also the noise and jarring common to such inlet and outlet valves is
obviated.
The inlet valve, placed on the inner side of each cylinder cover consists of an
annular metal ring of any suitable section, having faces turned and prepared to
work on rings of asbestos felt, silicated cotton, or other suitable material let into
the said covers as seats, the annular ring to be guided by any suitable number of
spindles working.in bushes prepared for them in the cylinder cover being attached
to the annular valve in any convenient way at the inner end, and having con-
trolling springs with adjusting nuts and washers at the outer end by which the
extent of lift or movement of the said annular valve may be adjusted the air
having access to the cylinder when the valve is open by passing between the seating
rings and the annular valve on two sides. Each outlet valve consists of one,
or more, thin sheets of steel or other elastic material, of a rectangular or other
convenient form, resting on seats of asbestos felt, silicated cotton, or other suitable
material the cylinder or cylinder covers being prepared to receive the said seats;
the said valves being rigidly fixed to the said cylinder on one side, and so propor-
tioned as to rise from the seats to allow the efflux of air by virtue of their own
elasticity on the other sides.

page_text: I, EDWARD HORNBY BIRLEY, of Old Foundry, Barnsley, in the County of York,
Engineer, do hereby declare the nature of my invention for IMPROVEMENTS IN
INLET AND OUTLET VALVES AND SEATS FOR THE CYLINDERS, OR CYLINDER COVERS,
OF AIR COMPRESSING OR BLOWING ENGINES AND MACHINES, and in what manner
the same is to be performed, to be particularly described and ascertained in and
by the following statement :-
My invention relates to an improved arrangement and construction of the inlet
and outlet valves and seats used in cylinders of engines or machines for blowing
or, compressing. air or other fluids, whereby the least possible clearance space is
obtained at the cylinder ends, with-also the least possible rise or movement of the
valves, so that the noise &. jarring and consequent leakage common to inlet and
outlet valves is obviated.
The inlet valve, placed on the inner side of each cylinder cover consists of an
annular metal ring of any suitable section having faces turned and prepared..to
work on rings of felt, asbestos, cork sponge, silicated cotton or other suitable
elastic material let into the said cover as seats, or if: preferred, fixed to the annular
valve and working on a turned surface on the cylinder cover.
The annular ring
to be held and guided by any suitable number of spindles working in bushes
prepared for them in the cylinder cover being attached to the annular valve in any
convenient manner at their inner ends and having at their outer ends, on the outer
sides of the bushes controlling springs with adjusting nuts and washers by which
the extent of lift or movement of the said annular valve may be regulated. The
air has access to the cylinder when the valve is open in two concentric rings,
round the smaller and larger diameters of the annular valve, by thus having so
large an area of admission the rise or movement of the-valve from its position.
when closed, is reduced to the least possible amount.
3
Each outlet valve to consist of one or more thin sheet of iron or steel of a
rectangular or other suitable form, working on seats of felt, asbestos cork, sponge,
or other suitable and elastic material, or if preferred fixed to the outlet plate
valve, and working on a prepared surface of the outlet valve chamber; at the end
opposite to the outlet opening the iron or steel plates forming the valves are to be
rigidly bolted or secured to the cylinder, and proportioned so as to rise sufficiently
at the opposite end to allow the efflux of the compressed fluid from the cylinder to
the discharge pipe, by virtue of their own elasticity This efflux of compressed
fluid takes place on three sides of the rectangular outlet valves, the fourth being
bolted down to the cylinder. The boxes containing the outlet valves are placed,
by preference, on the upper side of the compressing cylinders, so as to be the more
accessible.
T
Referring to the drawings, the valves are shown in the most approved form.
Fig. 1, is a sectional elevation of air cylinder.
TAL
ation of outlet valves through the port or opening

page_text: Fig. 3, is an external elevation of cylinder cover showing annular valve &
spindles.
Fig. 4 is an internal view or elevation of cylinder cover showing annular valve
and spindles.
Fig. 5 shews alternative sections to which annular inlet valve may be made.
Like letters indicate like parts in all the drawings.
In Fig. 1 the piston is shown at the end of its stroke with the outlet valve O
open, and the inlet valve A closed, at the opposite end of cylinder the reverse is
shown. The inlet valve A is of metal and annular, and may be of any suitable
section Fig. 5 representing varieties A¹ A' A³ A'; it is held by a suitable number
of iron or steel spindles S, secured to it in any convenient manner, and on which
spindles it slides when opening and closing, these spindles are supported by bushes
in the cylinder cover, bored to receive them, at their outer end the spindles have
controlling springs nuts and washers. On the annular valve A where it rests
against the cylinder cover, a seat F of felt asbestos silicated cotton, sponge, cork,
or other suitable material is secured, to deaden the noise and jarring when the
valve is closing. This seat may be attached either to the cover or valve.
The outlet valve O is of steel or iron plate of a rectangular or other suitable
form, bolted down at one end and rising by its own elasticity at the other end to
permit the efflux of the fluid forced by the piston, the outlet valve has seats just
as the annular inlet valve-Fig. 2 is a cross section of the outlet valves showing
the manner in which they may be secured.
Fig. 3 is an external view of cylinder cover showing the annular inlet valves
with controlling springs nuts & washers.
Fig. 3 is an internal view of cylinder cover showing how the spindles S may be
secured.
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. The use of annular inlet valves of the form and for the purpose described.
2. The use of outlet valves, consisting of a plate of iron or steel as described.
3. The use, for the inlet & outlet valves, above, of seats of felt, asbestos, cork,
sponge, silicated cotton or other suitable elastic material.
Dated this fourteenth day of July 1885.