Year: 1899

page_text: Date of Application, 4th May, 1899
Complete Specification Left, 3rd Feb., 1900--Accepted, 24th Mar., 1900
I, AUGUSTUS BEVER, of Dewsbury Foundry, Northgate, Dewsbury, in the
County of York, do hereby declare the nature of this. invention to be as follows:-
My invention relates to engines constructed on the principle described in my
former Specifications of Patents No. 1666 of 1884 and No. 9039 of 1886 and also
to vertical engines with one or more sets of tandem cylinders placed above the
crankshaft.
The present improvements relates to an arrangement of tandem compound
cylinders and a special valve with a rocking motion, of the type known as
Corliss" valves, the whole designed to give a constant thrust on the crank-
shaft, also to an arrangement of tandem compound cylinders in which the steam
distribution is effected by piston valves.
Although I usually prefer to make the cylinders so as to give a constant thrust
on the connecting-rods, thus making the engine single-acting, they may also
be made double-acting.
In carrying out my invention with engines of the type referred to in my
former patents I place a pair of compound tandem cylinders on each side of the
crankshaft, the pistons of the two cylinders acting on the same crosshead and
connecting rod. By having a high and a low-pressure cylinder placed on opposite
sides I can obtain an absolutely perfect balance of all pressures on the cranks
at all parts of the stroke and at all loads.
For the distribution of steam I prefer to adopt a valve of the "Corliss" type,
so arranged as to act for both cylinders on one side of the engine.
In one form of my engine I allow full steam pressure to constantly act on the
outer surface of the high pressure pistons and to act intermittently and expand
on the inner side of these pistons then passing to the low pressure cylinders.
Instead of the "Corliss valve arrangement I may also use piston valves to
effect the distribution of steam and may use the steam either as described above
or in the usual method of single-acting engines or double-acting.
of
My invention also relates to a vertical single-acting engine with the above type
"Corliss" valve and using the steam as described above.
It is obvious that I may either use one or more sets of cylinders side by
side operating on separate crankpins on the shaft.

page_text: Improvements in High-speed Engines.
1, AUGUSTUS BEVER, of Dewsbury Toundry, Northgate, Dewsbury, in the
County of York, 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 relates to engines constructed on the principle described in my
former Specifications of Patents No. 1666. of 1884 and No. 9039 of 1886 and also
to vertical engines with one or more tandem cylinders placed above the crank-
shaft.
1
☑ 11 .!
The present improvements relates to an arrangement of tandem compound
cylinders and a special valve with a rocking motion, of the, type known as
Corliss" valves, the whole designed to give a constant thrust on the crank-
shaft, also to an arrangement of tandem compound cylinders in which the steam
distribution is effected by piston valves. Although I usually prefer to make the
cylinders so as to give a constant thrust on the crankshaft, thus making the
engine single-acting, they may be also made double-acting.
لود
In carrying out my invention with engines of the type referred to in my
former patents I place a pair of compound tandem cylinders on each side of the
crankshaft, the pistons of each pair of cylinders acting on the same crosshead
and connecting-rod. By having a high and a low-pressure cylinder placed on
each side opposite to each other can obtain an absolutely perfect balance of all
pressures on the cranks at all parts of the stroke and at all loads.
For the distribution of steam I prefer to adopt a valve of the "Corliss" type
each valve so arranged as to act for the two cylinders on one side of the engine.
In the form of my engine which I propose chiefly to adopt, I allow full steami
pressure to constantly act on the outer surface of the high pressure pistons, and
to act intermittently and expand on the inner side of these pistons, then passing
to the low pressure cylinders.
Instead of the "Corliss valve arrangement I may also use piston valves to
effect the distribution of steam and may use the steam either as described above
or in the usual method of single-acting engines or double-acting.
3.
My invention also relates to a vertical single-acting engine with the above type
of Corliss valve and using the steam as described above.
"
It is obvious that I may use either one or more sets of cylinders side by
side operating on separate crankpins on the shaft.
In order to enable my invention to be fully understood I will describe the same
by reference to the accompanying drawings, in which Figures 1 and 2 represent
respectively a vertical and a horizontal section of the balanced compound engine
worked with valves of the "Corliss" type and constructed according to my
present invention.
Figure 3 shows a portion of a similar engine in section, but fitted with valves
of the piston type and Figure 4 shows a vertical single-acting engine fitted with
the "Corliss" or oscillating valve.
Figure 5 shows a section of the same cylinders, but with the pistons' at the
opposite end of the stroke. Similar letters of reference indicate similar, or
corresponding parts throughout the several figures of the drawings."
In all the drawings A are the high-pressure evlinders and B are the low-
pressure cylinders, C being the opening through which the high-pressure steam
is admitted and D being the opening through which the steam is exhausted after
passing through the high and low pressure cylinders.
It will be seen that the high pressure steam is constantly acting on the outer
side of the high-pressure pistons and that when the pistons are in the position

page_text: shown, namely the extreme outward position, no steam can pass to the valve.
casing in consequence of the passage leading to the casing having been covered by
the piston, the steam which has been acting on the inner surfaces of the high-
pressure pistons, in this position of the engine is allowed to pass through the
ports and the valve recess o to the outer side of the low pressure pistons and
after acting during the inward stroke on the outer side of this piston the steam.
passes through the valve recess s to the inner side of this piston and afterwards
passes to the exhaust. Figure 5 shows a section of the cylinder with the pistons
at the opposite end of their stroke and by comparing this with either Figure 1 or
Figure 4 the action of the steam may be followed throughout.
In Figure 4 high pressure steam is acting on the upper side of the high
pressure cylinder, steam is passing from the lower side of the high pressure
cylinder to the upper side of the low pressure cylinder, and the steam from the
lower side of the low pressure cylinder is passing to the exhaust, in Figure 5 high
pressure steam is passing through the port m and the valve has just opened to
the lower side of the high pressure cylinder, steam continues to pass until the
piston in its upward stroke covers the port m. and the steam from the upper
side of the low pressure cylinder is passing to the lower side through the valve
recess s. Precisely the same action of the steam takes place in the engine as
shewn in Figure 3 where the steam distribution is effected by a piston valve.
Although I usually prefer to use the steam in this way, I may also use it in
the ordinary way of single-acting engines, that is, let it act only on the outer
surfaces of the high and low pressure pistons or I may make both cylinders double-
acting.
In the engines shown in Figures 1, 2 and 3 it will be seen that there are a
high and a low pressure cylinder on each side and that they are coupled to opposite
crankpins, the one by a plain connecting rod and the other by a forked rod and
as the pressures on the two sides are always exactly equal and the parts are
designated so that they will be of equal weight, it will be seen that the engines
will always be perfectly balanced both in pressures and also in revolving and
reciprocating weights.
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. In a steam or fluid pressure engine, placing a high and a low pressure
cylinder tandemwise on each side of the crankshaft and coupling them to opposite
cranks, one side by a plain connecting rod and the other side by a forked rod,
thus perfectly balancing the pressures and weights as hereinbefore described.
2. The improved compound engine constructed, arranged and operating as
herein before described and represented by Figures 1 and 2 of the accompanying
drawings.
3. The improved compound engine constructed, arranged and operating as
herein before described and represented by Figure 3 of the accompanying draw-
ings.
4. The oscillating or
" Corliss" valve which admits and releases the steam from
the inner side of the high pressure piston and the two sides of the low pressure
piston as herein before described and represented by Figures 1, 2, 4 and 5 of the
accompanying drawings.
5. The improved vertical engine fitted with oscillating or "Corliss" valve
and constructed, arranged and operating as herein before described and repre-
sented by Figure 3 of the accompanying drawings.
Dated this Second day of February 1900.