IMPROVEMENTS IN THE AUTOMATIC GOVERNING OF STEAM SHIP ENGINES
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
-
I, JOHN GLASGOW SANDERSON of 75 Melbourne Terraco, Peru St, Salford in the
County of Lancaster-Engineer do hereby declare the nature of my Invention
for IMPROVEMENTS IN THE AUTOMATIC GOVERNING OF STEAM SHIP ENGINES to
be as follows!--
My invention consists essentially of the use of a Pendulum which may be
suspended in any convenient position and in any convenient manner witliin or
without the Engine room of a steam ship and is weighted so that during the
Pitching or Rolling of the Vessel it may practically maintain its vertical position
and thereby with the aid of attachments of any suitablo description between it and
the Throttle Valve I am able to automatically govern or control the admission of
steam to the Engines.
The means I use for imparting the required motion to the Valve is by attaching
a rocking Shaft to the deck or Girder of the Vessel its position being parallel to
that of the deck and thereon I suspend a Pendulum hung in such a manner that it
will oscillate freely in the direction of the axis of the shaft without imparting a
revolving motion thereto but upon the Vessel Pitching or Rolling so as to cause
the Penduluin to vibrate in an opposite direction: viz., that at right angles to the
line of the rocking shaft a partial rolling or revolving action of the latter will
necessarily take place.
The motion thus obtained I convey to the Steam Valve by means of levers
known as "Parallel Motion" or they may be of any suitable description so that
when sailing in a rough Sen if the Screw Propeller or Paddle wheels be partially
or wholly lifted out of the water the Pendulum maintains a steady and vertical
position and the Valve which by virtue of its lever attachinents is held in a parallel
or correspondingly steady position preserves its equilibrium and automatically
closes the steam supply at the desired moment.

page_text: WEMELE
VI DVTIVATIО
I, JOHN GLASGOW SANDERSON of 75 Melbourne Terrace Peru Street Salford in
the County of Lancaster Engineer do hereby declare the nature of my invention
for AN IMPROVED GOVERNOR FOR MARINE ENGINES and in what manner the
same is to be performed, to be particularly described and ascertained in and by the
following statement :-
My invention consists in the use of a heavily weighted pendulum suspended in
such a manner that it will practically always maintain its vertical position, and by
this means through the rolling or lifting of the ship in a heavy sea, will auto-
matically govern the admission of steam to the ship's Engines, and in order that
my invention may be fully understood I will describo the accompanying drawings
reference being had to the figures and letters marked thereon,
Fig 1 is a side elevation, Fig 2 is a plan shewing a mode of pivoting or
suspending the pendulum to shaft. Fig. 3 is an end elevation.
A weighted pendulum A Figs 1 and 2 is suspended by means of a pin a,
Figs 1-2 and 3, from a rocking shaft B which allows the pendulum to oscillate
freely in a line with the axis of the shaft B. The rocking shaft B has rounded
ends, or conical ends, and is carried in suitable bearings C. C¹ provided with
rounded or conical cup ends to take up the end thrust of rocking shaft B,
A lever D, keyed on the shaft B, regulates the throttle valve E, by means of the
connecting rod F, which is attached to the lever D, on rocking shaft and to the
lever G, on the throttle valve. The bearings C. C may be fixed to small girders
bolted or rivetted to deck of boat, or they may be carried or fixed in any convenient
manner to suit the requirements of the Engine Room, but in all cases horizontal to
the Engine Room Hoor. The pendulum, A having at its inferior extremity a
heavy weight, will preservo its vertical position in all conditions of weather, and
being suspended to a rocking shaft B in any such manner as described, is free to
move in any direction. Whilst the pondulum A oscillates in the direction of the
axis of the shaft B, there is no movement or oscillation of this shaft B on its axis,
but any deviation of the pendulum out of this line will cause the shaft B to
partially rotate upon its axis, this movement is communicated to the throttle
valve E by means of the lovers and connecting rod D. F. G already described and
theroby increases or diminishes the speed of Engines. In Scrow Steam Ships
1 propose to place the rocking shaft B in a horizontal position and at right anglos
with the keel of the boat, so that as the ship rises at the bows the steam or throttle
valve is gradually opened to its fullest extent, and when the stern rises the steam
or throttle valve E is gradually closed again, through the pendulum A maintaining
its vertical position during this movement of the ship and thereby causing a partial
rotation of the rocking shaft B. In Paddle Steam Ships, the roll of the boat from
sido to side will be the controlling force, and therefore the rocking shaft B will be
placed in a horizontal position and in a line with the keel of boat.

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
1st The weighted pendulum A, swinging freely in any direction 2nd The
Rocking shaft B for carrying pendulum A and lover D. 3 The combination of
the pendulum A and Rocking shaft B, substantially as described.
Dated this 2nd day of Mamb 1995