IMPROVEMENTS IN GOVERNING APPARATUS APPLICABLE TO STEAM ENGINES
Year: 1882

page_text: LETTERS PATENT to Barnard Fowler and William Daniel both of the Steam
Plough Works Leeds in the County of York for an Invention of
"IMPROVEMENTS IN GOVERNING APPARATUS APPLICABLE TO STEAM ENGINES
"
PROVISIONAL SPECIFICATION left by the said Barnard Fowler and
William Daniel at the Office of the Commissioners of Patents on the 25th
September 1882.
BARNARD FOWLER and WILLIAM DANIEL both of the Steam Plough Works
Leeds in the County of York "IMPROVEMENTS IN GOVERNING APPARATUS
APPLICABLE TO STEAM ENGINES
"
This Invention relates to the more convenient arrangement of apparatus to
regulate the speed of a steam engine by automatically varying the grade of
expansion.
:
A small governor is employed and it controls directly the admission of steam to
an auxillary cylinder, which in turn operates upon the valve gear of the engine.
The moving collar upon the governor spindle gives motion to a sliding valve
Cupon a moveable valve face and by uncovering ports therein admits steam into an
auxillary cylinder and moves a piston. This piston is caused to work in unison
with the governor by being connected through its rod with the moveable valve
face. As soon as the valve is shifted by the governor, it admits steam to the
auxillary cylinder, the piston moves, and this in turn moves the valve face. When
the valve face overtakes the valve the steam is again cut off from the auxillary
cylinder and the piston comes to rest.
The piston of the auxillary cylinder operates a lever upon which there is a
toothed arc.
The teeth of the arc gear with a pinion upon an axis and the axis iś
thus rotated. The axis has screw threads upon it which work in nuts attached to
the two parts of an expansion valve upon the back of the main slide valve of the
engine. The rotation of the axis thus draws together or separates the parts of the
expansion valve and so, in a well known 'manner, varies the grade of expansion.
Or the piston, in place of rotating an axis may give motion to a plate with inclined
slots in it. Pins upon the two parts of the expansion valve then project into these
slots and consequently when the slotted plate is moved an alteration is brought
about in the distance between the two parts of the expansion valve, and the grade
of expansion is altered accordingly.
"
7
The movement of the piston in the auxillary cylinder is controlled by a cataract.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Barnard Fowler and William Daniel in the Great Seal Patent
Office on the 24th March 1883.
BARNARD FOWLER and WILLIAM DANIEL both of the Steam Plough Works
Leeds in the County of York. " IMPROVEMENTS IN GOVERNING APPARATUS
APPLICABLE TO STEAM ENGINES
"
This invention relates to the more convenient arrangement of apparatus to
regulate the speed of a steam engine by automatically varying the grade of
expansion.
A small governor is employed and it controls directly the admission of steam to
an auxillary cylinder, which in turn operates upon the valve gear of the engine.
The moving collar upon the governor spindle gives motion to a sliding, valve
upon a moveable valve face; and by uncovering ports therein admits steam into an
auxillary cylinder and moves a piston. This piston is caused to work in unison
with the governor by being connected through its rod with the moveable valve
face. As soon as the valve is shifted by the governor, it admits steam to the
moves the valve face
auxillary cylinder, the piston moves and this in turn
When the valve face overtakes the valve the steam is again cut off from the
auxillary cylinder and the piston comes to rest.
The piston of the auxiliary cylinder operates a lever upon which there is a
toothed arc. The teeth of the arc gear with a pinion upon an axis and the axis is
thus rotated. The axis has screw threads upon it which work in nuts attached to
the two parts of an expansion valve upon the back of the main slide valve of the
engine. The rotation of the axis thus draws together or separates the parts of the
expansion valve and so in a well known manner varies the grade of expansion.
Or the piston in place of rotating an axis may give motion to a plate with inclined
slots in it. Pins upon the two parts of the expansion valve then project into these
slots and consequently when the slotted plate is moved an alteration is brought
about in the distance between the two parts of the expansion valve, and the grade
of expansion is altered accordingly.
The movement of the piston in the auxillary cylinder is controlled by a cateract,
In order that our said invention may be most fully understood and readily
carried into effect we will proceed to describe the Drawings hereunto annexed.
DESCRIPTION OF THE DRAWINGS
Figure 1 is a side elevation Figure 2 is an end elevation and Figure 3 is a plan
montabla

page_text: render gradual the change of position of the piston in the cylinder f. The same
piston rod also actuates a rod h. connected with a moveable valve face i. seen in the
vertical section Figure 4 so that the position of the face i. varies with the position
of the piston in the cylinder f. k is a valve working on the moveable face and
admitting steam to the cylinder f on one or other side of the piston according to
the position which the valve k is made to assume by the governor. The slider of
the governor . moves a lever m to which the spindle of the valve k is attached by
a link,
Figures 5, 6, 7 and 8 shew a similar arrangement but in a somewhat different
form. Figure 5 is an end elevation, Figure 6 is a side elevation and Figure 7 is a
plan Figure 8 is an horizontal section on the line A. B. in Figure 5.
As in the previous figures the governor by means of a lever varies the position
of a valve working upon a moveable face i and admitting steam to a cylinder f.
The piston rod of the cylinder f in this case enters the valve chest and by
a link o moves the slotted plate p, and so adjusts the expansion valve by
varying the distance between the bars or covers q. q. of which the expansion valve
is composed.
Having thus described the nature of our said Invention and the manner of
performing the same we would have it understood that we claim :-
First. Our improved governing apparatus substantially as described.
Second. Controlling an expansion valve by a centrifugal governor causing steam
or fluid to be admitted to act on a piston by moving a valve which works on a
face moveable with the piston substantially as described
In witness whereof I the said William Daniel have hereunto set my hand
and seal this twenty first day of March in the year of our Lord One
thousand eight hundred and eighty three.
M
DANIEL
(L.D.)