Apparatus for Governing Electric Light Engines, Marine Engines. and other Engines.
Year: 1890

page_text: Date of Application, 30th Sept., 1890
Complete Specification Left, 30th July, 1891-Accepted, 5th Sept., 1891.
PROVISIONAL SPECIFICATION.
Apparatus for Governing Electric Light Engines, Marine Engines.
and other Engines.
We, TIMOTHY SULLIVAN, Engine Driver, JOHN WILLIAM HUGHES and
VICTOR WILLIAM CHEMERY, Tin Plate Merchants, and ARTHUR HENRY
SPENCE BROWNE, Mercantile Clerk all of 83 Gracechurch Street, London, do
hereby declare the nature of this invention to be as follows:-
According to this invention we regulate the speed of electric light engines,
marine engines, and other engines to a great degree of nicety all as hereinafter
described. We provide the engine to be governed with a governor of any
approved construction and connect it with a three way cock or equivalent device
which admits steam or other motive fluid to a small auxiliary engine of any suit-
able construction. The shaft of this latter is by tooth wheel gearing or otherwise
connected to the spindle of the throttle valve of the main engine, and in case of
marine engines or other engines subject to great fluctuations of the load we also
connect the said shaft of the auxiliary engine with a brake on the main engine.
In consequence of this arrangement in case of any alteration in the normal speed of
the main engine the governor will be affected thereby and consequently also the
three way cock of the auxiliary engine so that this engine will be started in one
direction or the other and thereby actuate the throttle valve of the main engine in
the sense of closing or opening it. At the same time in the case of marine engines
and other engines exposed to sudden fluctuations of load the brake will in case of
increase of its speed be put on and in case of decrease of its speed be taken off.
Dated this 30th day of September 1890.
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.
COMPLETE SPECIFICATION.
Apparatus for Governing Electric Light Engines, Marine Engines.
and other Engines.
TIMOTHY SULLIVAN, Engine Driver, JOHN WILLIAM HUGHES, and VICTOR
WILLIAM CHEMERY, Tinplate Merchants, and ARTHUR HENRY SPENCE
BROWNE, Mercantile Clerk, all of 83 Gracechurch Street, London, 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:-
According to this invention we regulate the speed of steam or other motive fluid
engines to a great degree of nicety as hereinafter described. We provide the engine to
be governed with a governor of any approved construction and connect it with a three
or four way cock or equivalent device which admits steam or other motive fluid to
a small auxiliary engine of any suitable construction. The shaft of this latter is
by tooth wheel gearing or otherwise connected to the spindle of the throttle valve
of the main engine, and in case of marine engines or other engines subject to great
fluctuations of the load we also connect the said shaft of the auxiliary engine with a
brake on the main engine. In consequence of this arrangement, in case of any
alteration in the normal speed of the main engine, the governor will be affected
thereby and consequently also the four way cock or its equivalent, of the auxiliary
engine, so that the engine will be started in one direction or the other and thereby
actuate the throttle valve of the main engine either in the sense of closing or
0

page_text: opening it or partially closing or opening it. At the same time in the case of
marine engines and other engines exposed to sudden fluctuation of load, the brake
will in case of increase of its speed be put on and in case of decrease of its speed,
be taken off.
The small auxiliary engine is preferably placed in a convenient position near to
the throttle valve of the main steam pipe of the large engine, taking its steam
through a pipe fitted with a steam cock from the main steam pipe between the
throttle and the boiler.
The ordinary main engine governor is preferably dispensed with and a smaller
governor
is fixed near to or carried by the auxiliary engine, this smaller governor
is preferably worked by a band belt from any convenient part of the main engine,
and may be geared up to any suitable speed above that of the main engine so
that the fluctuations of the main engine are magnified and cause the small governor
to act quicker, for instance if the governor is geared to revolve at, say 4 to 1 of
the main engine, a quarter of a revolution increase or decrease of the speed of
the latter will be magnified to one revolution of the governor, the difference of the
gearing being arranged according to the degree of nicety required in governing
the main engine.
Any suitable form of governor may be used and any convenient type of auxiliary
engine employed.
The accompanying drawings Sheet 1 to 3 show one form and the connection to
the throttle valve of the main steam pipe of main engine..
Sheet 1. Fig. 1. is an elevation of auxiliary engine with governor A attached,
actuating a four way cock B. which cock is arranged so that when the auxiliary and.
main engines are at rest, the steam is admitted into the cylindrical slide valves C. C.
thus driving the auxiliary engine one way which opens the throttle valve D. through
gearing E. E. which continues to admit steam into the main engines until their
speed has increased to the number of revolutions that they are required to run at.
The speed that the governor will then have attained when properly adjusted,
will have caused the four way cock B, through the connecting levers F. F., (one of
which is made adjustable, so that it may be set for any required speed), with the
governor A. to assume the position of the dotted lines, which shows the steam
passage to the auxiliary engine cut off, consequently the auxiliary engine will
remain stationary until the speed of the main engines causes the speed of the
governor to fluctuate, thus actuating the four way cock which will cause the steam
to be again admitted into the slide valves of the auxiliary engine driving it one way
or the other, according to whether the speed has increased or decreased, which in
turn either closes or opens more, the throttle valve. Q is the band from main
engine
for
The gearing E. E. from auxiliary engine to throttle valve, is by suitable gear
wheels, which actuate a screw to regulate the valve, but this may have any other
form of connection and actuate any suitable valve, in any convenient manner,
instance it may work a crank arm, to partially rotate a disc throttle, or it may
work the ordinary valve for turning steam on or off from the boilers, in this case
there would be an arrangement by which the four way cock or equivalent device
could be actuated by hand if desired in addition to the arrangement in connection
with the governor, so that the steam to the main engine could be shut off at any
time by the partial rotation of the four way cock to drive the auxiliary in the
direction to close the main valve.
Sheet 2. Fig. 2. shows a plan of Fig. 1. and,
Sheet 3. Fig. 3. is a back elevation of Fig. 1.
Fig. 4 is a section of circular slide valve showing double piston valve, it will be
seen if steam is admitted by pipe G. it goes to both ends of the double piston valve
thus driving the engines one way, the exhaust from the cylinders having its exit
through space between pistons of slide valve and out by pipe H., these pipes G.
and H. are connected to four way cock B as shown, the steam inlet and exhaust
pipes being I. and J. respectively. The four way cock is shown in position for

page_text: admitting steam to valves as described, and the dotted lines show cock in position
to reverse the action of valves and cylinders by admitting steam between the pistons
and exhausting from each end.
Fig. 5. shows an alternate device in place of four way cock.
The auxiliary engine may also be arranged to actuate a brake upon the main
engines when they are subject to great fluctuations of load, a suitable method of
applying same is shown on Sheet 4.
Fig. 6. The auxiliary engine is shown in plan connected to the throttle of the
main steam pipe by gearing E. E., upon the opposite side of shaft of auxiliary
engine, a drum K. is attached to which is affixed one end of a chain L., the chain
passes from this drum down and under a suitable pulley and to one end of a band
brake M. which encircles a brake pulley N. fixed on the main shaft O. O. of the
main engines, the length of the chain is adjusted to the required length to apply the
brake just as the throttle valve is closed, the chain hanging slack and having no
effect upon the brake until the drum K. has revolved sufficiently for this purpose.
The band brake is preferably fixed so that the forward motion in the direction
of the arrow tends to put all the strain of the friction of the band brake upon the
trunnions P. P., the auxiliary engine merely having to pull the brake on sufficiently
to make it bite.
A counterweight or other suitable means may be used for keeping the band brake
off the brake pulley when the chain from the auxiliary engine releases it.
Other suitable forms of brake may be used which could be applied by the
auxiliary engine, or the auxiliary engine may be made to throw in or out, a clutch,
which would connect a pulley to the main shaft, so arranged that the revolution of
the main shaft drew on its own brake.
Similar letters denote corresponding parts in all the drawings.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is.
1st. The apparatus for governing steam or other motive fluid engines substantially
as herein described and illustrated in the accompanying drawings.
2nd. The use in connection with steam or other motive fluid engines of an
auxiliary engine to actuate the throttle or other valve which regulates the supply
of steam or other motive fluid to the main engine, the said auxiliary engine being
started in either direction and stopped by a governor driven from the main engine.
3rd. The use in combination with steam or other motive fluid engines of an
auxiliary engine, to apply or cause to be applied a brake to the main engine, the
auxiliary engine being actuated by a governor driven from the main engine.
4th. The use in combination with main steam, or other motive fluid engines and
an auxiliary engine, of a governor, driven by the main engine which governor
actuates a four way cock or its equivalent arranged to admit steam or other motive
fluid to the auxiliary engine so as to drive the auxiliary engine in either direction
or stop same according to the speed at which the governor is driven for the purposes
herein specified.
...
1
1
1001
H. T. TALLACK,
28, Hatton Garden, London, E.C., Agent for Applicants.