IMPROVEMENTS IN APPARATUS FOR REGU- LATING THE SPEED OF STEAM OR OTHER MOTIVE-POWER ENGINES
Year: 1878

page_text: PROVISIONAL SPECIFICATION left by William Edward Newton at the
A commu-
Office of the Commissioners of Patents on the 15th June 1878.
nication from abroad by Gustave Denis, of Paris, in the Republic of France.
WILLIAM EDWARD NEWTON, of the Office for Patents, 66, Chancery Lane, in the
County of Middlesex, Civil Engineer. "IMPROVEMENTS IN APPARATUS FOR REGU-
LATING THE SPEED OF STEAM OR OTHER MOTIVE-POWER ENGINES." [A commu-
nication from abroad by Gustave Denis, of Paris, in the Republic of France.]
The object of this Invention is to cause steam and other motive-power engines to
work at an uniform and regular speed, and to this end an additional apparatus,
provided with a movable weight, is adapted to the ordinary governor for the
purpose of rendering it more sensitive, and to cause it to act with increased quick-
ness on the throttle or slide valve which governs the induction steam.
The apparatus, which the inventor calls a movable counterweight compensator, is
so constructed and arranged that it may without difficulty be adapted to existing
engines, and without altering or removing any of the parts of the latter. On the spindle
of the ordinary governor, which is actuated in the usual way, is keyed a spur wheel
which gears into and drives a second toothed wheel mounted on a vertical spindle
fixed in a bracket, which is bolted or otherwise secured in any convenient manner
to the framing of the engine.
Immediately above the end of this spindle there is a pendent bearing fixed in the
upper end of the bracket for the purpose of receiving the spherical end of a pen-
dulum or swinging shaft, so as to form a kind of universal joint. A spherical weight
is keyed on this swinging shaft, and the lower end of the latter passes through a
Below this wheel
radial slot made in the second toothed wheel above mentioned.
there is a third wheel provided on its periphery with external teeth or notches, and
below this wheel is a fourth wheel provided on its periphery with internal teeth or
notches. The teeth or notches of these two wheels are on the same horizontal
plane, and there is sufficient space between them to admit of the lower end of the
pendulum or swinging shaft being carried round by the second wheel above without
touching the other wheels. This will be the case when the pendulum wheel is

page_text: rotating at its normal speed, but if this speed either increases or diminishes the
pendulum will either fly out into the notches of one wheel or drop back into the
notches of the other.
The third wheel is mounted on the upper end of a sleeve, which turns freely on
the central vertical spindle, and carries at its lower end a bevil toothed wheel.
A similar wheel is cast on the under side of the fourth wheel, which turns freely
on the sleeve of the third wheel, so that these two wheels are capable of indepen-
dent rotary motion in opposite directions, and their two bevil wheels both gear into
an intermediate bevil wheel mounted on a screwed shaft, which turns in bearings
in the bracket frame. A horizontal rocking shaft carries a lever which is con-
nected with the throttle valve or slide valve of the engine, and on this shaft is
keyed a double-armed horizontal lever, on each of the ends of which is mounted a
ball or spherical weight of exactly the same size and gravity and the same distance
apart from the rocking shaft. One of these weights is fixed, and the other is capable
of being moved along its arm of the lever. To effect this motion a cross pin is
fixed in the ball, and its ends are received in round holes at the ends of a pair of
horizontal rods, which at their other ends carry a screwed block, through which the
screwed shaft passes.
It will now be understood that if rotary motion be imparted to this shaft by
means of the bevil gear at its inner end (as already explained) then the second
block will be moved back or forward, as the case may be, and will cause the movable
spherical weight to move along its arm, and thus destroy the balance of the double-
armed lever, so that the rocking shaft on which it is mounted will rock, and thereby
actuate the throttle or induction valve of the engine.