IMPROVEMENTS IN GOVERNORS FOR STEAM AND OTHER MOTIVE POWER ENGINES "
Year: 1882

page_text: LETTERS PATENT to Frederick John Burrell of the St. Nicholas Works Thetford
in the County of Norfolk for an Invention of "IMPROVEMENTS IN GOVERNORS
FOR STEAM AND OTHER MOTIVE POWER ENGINES
"
PROVISIONAL SPECIFICATION left by the said Frederick John Burrell at
the Office of the Commissioners of Patents on the 6th December 1882.
FREDERICK JOHN BURRELL of the St. Nicholas Works Thetford in the County of
Norfolk. IMPROVEMENTS IN GOVERNORS FOR STEAM AND OTHER MOTIVE POWER
ENGINES
rr
This invention has for its object improvements in governors for steam and other
motive power engines.
In my improved governor I make use as heretofore of the centrifugal action of
revolving weights controlled by springs. My construction is such that in all
positions of the weights the resistance which the governor offers to movement
from one position to another under the influence of the centrifugal force and the
spring remains uniform; this is not the case in any governor in which the weights
rise higher in one position than in another.
My governor consists of a vertical axis driven by the engine and provided with
a cap. The cap has two horizontal radial arms which carry the weights and the
weights can slide upon the arins.
The cap is also provided with two horns, they project below the weights and on
them are the fulcra of two pair of bent levers.
The centre of each. weight is connected by a pair of links with the upper ends
of the pair of levers carried by one of the horns, the horn having a lever on either
side of it.
The lower arms of the levers project inwards from the fulcra aud are pin jointed
to a sleeve upon the vertical spindle. A spring compressed between the cap and
the sleeve tends to depress the lower ends of the bent levers and to draw the

page_text: weights inwards along the radial arms. This tendency is balanced at each speed
by the centrifugal action of tlie weights. The fulcra of the levers are capable of
moving a short distance horizontally upon the horns of the governor which admits
of a simple pin connection being made between the levers and the sleeve upon the
governor axis.
This governor is suitable for controlling expansion gear in high speeded engines,
its centre of gravity is low which renders it comparatively free from vibration
and wear.
In some cases I dispense with the bent levers and substitute connections by
chains in metallic bands between the weights and the sleeve; these chains or bands
are led around guide pulleys upon the cap.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Frederick John Burrell in the Great Seal Patent Office on the
5th June 1883.
FREDERICK JOHN BURRELL of the St Nicholas Works Thetford in the County of
Norfolk. "IMPROVEMENTS IN GOVERNORS FOR STEAM AND OTHER MOTIVE POWER
ENGINES
"
This Invention has for its object improvements in governors for steam and other
motive power engines.
In my improved governor I make use as heretofore of the centrifugal action of
revolving weights controlled by a spring or springs.
My construction is such that in all positions of the weights the resistance which
the governor offers to movement from one position to another under the influence
of the centrifugal force and the spring or springs remain uniform; this is not the
case in any governor in which the weights rise higher in one position than in
another.
My governor consists of a vertical axis driven by the engine and provided with
The cap has two horizontal radial arms which carry the weights and the
weights can slide upon the arms.
a cap.
A spring is compressed between the cap and the sleeve upon the governor axis
and this sleeve is connected with the weights by chains or metallic bands. These
chains or metallic bands are led around guide pulleys upon the cap.
This governor is suitable for controlling expansion gear in high speeded engines;
its centre of gravity is low which renders it comparatively free from vibration
and wear.
In order that my said Invention may be most fully understood and readily
carried into effect I will proceed to describe the Drawings hereunto annexed.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is an elevation half in section of a governor constructed according to
my invention. Figure 2 is a side elevation of the same.
The vertical axis A carries the cap B, this cap has two projecting radial arms
CC upon which the weights D D can slide. These weights D D are connected
to the sleeve J by metallic bands M M which pass over the rollers R R attached
to the cap B by studs or bolts on which they turn freely.
A spring K is compressed between the cap and the sleeve J which tends to draw
the weights D D inwards along the arms C C. The movement of the sleeve is
transmitted in the usual way to the valve.
This governor is specially suitable for controlling the expansion gear in high
speeded engines its centre of gravity is low which readers it comparatively free
from vibration and wear. Owing to the weights being supported throughout their
range and not being influenced by their own weight in rising from one position to
another a much steadier action is produced and freedom from the tendency to hunt.
This tendency in other governors having frequently to be checked by means of oil
cylinders. This governor can also be used to move a throttle vale.
Having described the nature of my invention and the manner of performing the
same I would have it understood that I do not claim any of the parts separately
viz, the vertical axis, the cap, the balls sliding on arms, the vertical sleeve and
spring But what I do claim is the combination of these parts in the governor as

page_text: described with chains or metallic bands connecting the weights with the sleeve for
the purpose set forth.
Second. The use of chains or metallic bands guided by rollers to attach the
weights of a governor to the sleeve substantially as described.
In witness whereof I the said Frederick John Burrell have hereunto set my
hand and seal this fourth day of June in the year of our Lord One thousand
eight hundred and eighty three.
FRED J. BURRELL (L.S.)