An Improved Means for Utilizing Steam in the Cylinders of Loco- motive, Traction and Stationary Engines of all Kinds Used on Land.
Year: 1899

page_text: Date of Application, 25th Mar., 1899
Complete Specification Left, 24th June, 1899-Accepted, 29th July, 1899
PROVISIONAL SPECIFICATION.
An Improved Means for Utilizing Steam in the Cylinders of Loco-
motive, Traction and Stationary Engines of all Kinds Used on
Land.
JOHN FEESEY, "Agra Ville," Station Road, Fleet, Winchfield, Hants, Retired
Civil Servant, do hereby declare the nature of this invention to be as follows; -
Three cylinders are used for working each engine instead of one or two as
now adopted. The cranks worked from these three cylinders are always to be
fixed at the equal angles, from each other, of 120 degrees of the circle of revolu-
tion, the whole forming the complete circle.
The cranks may be adapted to one or more shafts, but if on more than one
shaft, the driving wheels must be connected by connecting rods.
The steam on entry into the cylinders is to be cut off at two thirds of the
length of the stroke, the volume of steam issuing from the boiler at the three
combined two-third strokes being thus only two whole cylinder volumes, and
the steam is economized to the extent of one third of its cylinder volume.
The steam, after the cut-off, developes further power by expansion for the
remaining third of its stroke over and above the power developed by the same
volume of steam if used in two full cylinders only, and it finally escapes at a
lower pressure than on entry into the cylinders.
The cranks being always fixed at equal angles of 120 degrees from each other,
and the steam being cut off at two thirds of the stroke, there is always at least
one of the cylinders available where a vacuum does not exist on steam being
turned on when the engine is at rest.
When a still further economy of the steam is desired to be effected it is to be
cut off at a still shorter portion of the stroke (as may be desired) than the
two thirds already specified, and by this invention, a further distinct improve-
ment over and above the capabilities of two cylinders is obtained; thus, if steam
be cut off at half-stroke in two cylinders, and one crank is at 90 degrees (the
point of "cut off") the other crank will be at one of the dead points and neither
piston is available for starting either way; but, by this invention, one crank
being at 90 degrees, the point also of "cut off," the two others will be at 210
and 330 degrees respectively, and their pistons will both be available for work,
the one forward, and the other for reverse motion.
1
Jana 1800

page_text: An Improved Means for Utilizing Steam in the Cylinders of Loco-
motive, Traction and Stationary Engines of all Kinds Used on
Land,
JOHN FEESEY, Esq., Agraville, Station Road, Fleet, Winchfield, Hants, 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:
-
In carrying out my invention I employ three cylinders for working each
engine instead of one or two as now adopted. The cranks worked from these
three cylinders are always to be fixed at the equal angles from each other of
120 degrees of the circle of revolution, the whole forming a complete circle.
The cranks may be adapted to one or more shafts but if more than one shaft,
the driving wheels must be connected by connecting rods.
The steam on entry into the cylinders has to be cut off on two thirds of the
length of the stroke, the volume of steam issuing from the boiler at the three
combined two thirds strokes being thus only two whole cylinder volumes and
the steam is economised to the extent of one third of this cylinder volume. The
steam after the cut off, developes further power by expansion for the remaining
third of its stroke over and above the power developed by the same volume of
steam if used in two full cylinders only, and it finally escapes at a lower pressure
than on its entry into the cylinders. The cranks being always fixed at equal
angles of 120 degrees from each other and the steam being cut off at two thirds
of the stroke, there is always at least one of the cylinders available where a
vacuum will not exist on steam being turned on when the engine is at rest.
When a still further economy of the steam is desired to be effected, it is to be
cut off at a still shorter portion of the stroke (as may be desired) than the
two thirds already specified, and by this invention a further distinct improve-
ment over and above the capabilities of a two cylinder engine is obtained, thus
if steam be cut off at half stroke in the two cylinders and one crank is at
90 degrees (the point of "cut off") the other crank will be at one of the dead
points and neither piston is available for starting either way, but by this inven-
tion one crank being at 90 degrees, the point also of "cut off" the two others
will be at 210 and 330 degrees respectively and their pistons will both be avail-
able for work, the one for forward and the other for reverse motion.
For purposes of illustration I will now refer to the annexed drawings in
which:-
Figure 1, is a diagramatic plan view showing my invention.
Figure 2, diagramatic side elevation showing the relative angles at which
the cranks on the shaft are set being 120 degrees, a, a¹, a³, are the cylinders in
which the pistons being connected to the cranks h, 61, 3, through the medium
of the rods c. c¹, c. Any convenient form of cut off or slide barrel may be
employed for the purpose of admitting the steam at the required point of stroke
in the cylinders. It will be seen that as the three cranks are set at angles of
120 degrees relative to one another, there cannot be any dead centre between
any two of the pistons, that is to say that while one piston is called the dead
centre, the other two pistons are in their operative positions either on the for-
ward or backward stroke, and according to the arrangement of cut off, so the
economising of the steam is effected through allowing it more or less expansion.

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. In the improved means for utilising steam, the combined construction and
arrangement of the various parts, substantially as described and illustrated
herein and for the purpose set forth.
2. In means for utilising steam, the employment of a shaft having threo
cranks thereon set at equal angles relatively to each other, and being operative
by three cylinders provided with any convenient form of slide valve or cut off,
substantially as described and illustrated herein and for the purpose set forth.
Dated this 01th lo
T 1900