A Rotary Motor for the Driving of Governors for Regulating Marine and other Engines.
Year: 1890

page_text: Date of Application, 3rd July, 18:0
Complete Specification Left, 3rd Nov., 1890-Accepted, 13th Dec., 1890
PROVISIONAL SPECIFICATION.
A Rotary Motor for the Driving of Governors for Regulating Marine
and other Engines.
We, JOHN TYLER, Engineer, GEORGE MEACHAM, Gas Fitter and WILLIAM ALBERT
BLANDFORD Gas Fitter all of Rockhampton in the Colony of Queensland, do hereby
declare the nature of this invention to be as follows:-
The motor to be applied, and form part of the pipe leading from boiler or reservoir
to place of exit or engine, the flow of steam vapour, fluid or gas constituting the motive
force, and revolving the fan in transit. The motor to consist of a rotary fan or a
number of rotary pistons, made nearly the same area as inside area of pipe, and turning
a spindle communicating with the governor or regulator for actuating the valve in
opening, or shutting.
C
The motor to form a part or section of length of the pipe and to be placed between
the source of supply and delivery ends, and as near the supply end as is compatible,
more especially in the case of steam pipes conveying steam to marine engines.
When the speed of piston of engine has been decided, and the capacity of cylinder
or cylinders is known, the quantity of steam per stroke, per minute is easily
ascertained, and also what rate în proportion will be the travel of steam in pipe of
given area.
The motor being in position between the boiler and engine as near to the boiler as
convenient nearly fills the pipe, all but space for clearance for revolving, with a series
of fans, pistons, or whatever terms may be applied to them, which the steam must move
before passing such force being equal to the same pressure per square inch, as is the
working pressure of engine, in passing it is continually acting on one or more fans
or pistons, and a rotary motion is thereby constant, and positive.. The rate of travel;
of steam from boiler through the pipe when the engine travels at its proper working
speed being known. The number of revolutions of the motor is easily computed and
the necessary pulleys, toothed wheels or other methods employed in transmitting
motion to the governor, and to be secured to the motor spindle can also be found by
the usual methods for diminishing or increasing motion. The steam on leaving the
boiler sets the motor in revolution and while the piston of the engine maintains its
determined speed, the motor being adjusted for that speed, will not act on the throttle
valve to alter its position of full open, but in the event of the propeller leaving the
water, or from any other cause whatever, the load on the engine is diminished, and
thereby a higher speed is likely to take place in the engine pistons, an extra speed of
steam must take place at the boiler end of the steam pipe before it can reach the
engine at the other end. The "motor" being between the boiler and engine and as
before stated as near the boiler as is convenient, will, on the instant of an extra speed
of steam, be revolved also at an extra speed, and this will also take place before the steam
as had time to act on the engine piston or pistons, the increased travel of "motor"
will instantly react on the governor attached to throttle valve, whereby the throttle
valve will be shut before any increase of steam has had time to act on the engine
r engines, and thus effectually preventing the immense amount of wear and tear,
nd straining of engines and ship, that, inevitably takes place through that cause.
Dated this 3rd day of July 1890.
ABEL & IMRAY, -
Agents for the Applicants.

page_text: COMPLETE SPECIFICATION.
A Rotary Motor for the Driving of Governors for Regulating Marine
and other Engines.
We, JOHN TYLER, Engineer, GEORGE MEACHAM, Gas Fitter, and WILLIAM ALBERT
BLANDFORD, Gas Fitter, all of Rockhampton in the Colony of Queensland, 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 :-
The motor to be applied, and form part of the pipe leading from boiler or reservoir
to place of exit or engine, the flow of steam, vapour, fluid or gas constituting the
motive force, and revolving the fan in transit. The motor to consist of a rotary fan or
a number of rotary pistons made nearly the same area as inside area of pipe, and
turning a spindle communicating with the governor or regulator for actuating the
valve in opening or shutting.
The motor to form a part or section of length of the pipe and to be placed between
the source of supply and delivery ends, and as near the supply end as is compatible,
more especially in the case of steam pipes conveying steam to marine engines.
When the speed of piston of engine has been decided and the capacity of cylinder
or cylinders is known, the quantity of steam per stroke per minute is easily
ascertained, and also what rate in proportion will be the travel of steam in pipe of
given area.
The motor being in position between the boiler and engine, as near to the boiler as
convenient, nearly fills the pipe, all but space for clearance for revolving, with a series
of fans, pistons, or whatever terms may be applied to them, which the steam must
move before passing,--such force being equal to the same pressure per square inch
as is the working pressure of engine; in passing it is continually acting on one or
more fans or pistons, and a rotary motion is thereby constant and positive.
The rate of travel of steam from boiler through the pipe when the engine travels at
its proper working speed being known, the number of revolutions of the motor is
easily computed and the necessary pulleys, toothed wheels or other methods employed
in transmitting motion to the governor, and to be secured to the motor spindle can
also be found by the usual methods for diminishing or increasing motion. The steam,
on leaving the boiler sets the motor in revolution and, while the piston of the engine
maintains its determined speed, the motor being adjusted for that speed, will not act
on the throttle valve to alter its position of full open, but in the event of the propeller
leaving the water, or from any other cause whatever, the load on the engine is
diminished, and thereby a higher speed is likely to take place in the engine pistons,
an extra speed of steam must take place at the boiler end of the steam pipe before it
can reach the engine at the other end. The motor being between the boiler and
engine and, as before stated, as near the boiler as is convenient, will, on the instant
of an extra speed of steam, be revolved also at an extra speed, and this will also take
place before the steam has had time to act on the engine piston or pistons, the increased
travel of motor will instantly react on the governor attached to throttle valve, whereby
the throttle valve will be shut before any increase of steam has had time to act on
the engine or engines, and thus effectually preventing the immense amount of wear
and tear and straining of engines and ship that inevitably takes place through that
cause.
Fig. 1 of the accompanying drawings is a section and Fig. 2 is an elevation of part
of a steam pipe with its throttle valve and a motor according to our invention.
Fig. 3 is a plan, the, motor and cover being supposed to be removed.
Fig. 4 is a part section of a steam pipe with an ordinary throttle valve.
Fig. 5 is a plan of the motor and its cover inverted.
Fig. 6 is an end view and Fig. 7 is a transverse section of the motor and its

page_text: The motor A is a fan having suitably shaped blades 1, 2 &c. each blade terminating
in a semicircle or other form to suit the section of the steam pipe D. Over the motor
a cover G is fixed on the steam pipe. As there is always at least one blade of the
motor obstructing the passage of the steam pipe, the motor is caused to revolve at a
speed corresponding to that of the flow of steam to the engine.
The quantity and velocity of steam required to drive the engine at the desired
speed, being ascertained, the motor shaft H is geared or otherwise suitably connected
to the governor in such a manner that, on the slightest increase of the speed of the
motor, the throttle valve begins to close.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
1. A rotary motor for the driving of an engine governor, actuated by passage
of steam on its way to the engine, substantially as and for the purposes herein
set forth.
2. In a motor such as is above referred to, the combination of the fan A and its
cover G with the steam pipe D, substantially as described.
Dated this 3rd day of November 1890.
ABEL & IMRAY,
Agents for the Applicants.