AN IMPROVED PENDULUM GOVERNOR FOR REGULATING THE SUPPLY OF STEAM TO CYLINDERS OF MARINE ENGINES
Year: 1858

page_text: LETTERS PATENT to Charles Fréderic Vasserot, of 45, Essex Street,
THE
Strand, London, Patent Agent, for the Invention of "AN IMPROVED
PENDULUM GOVERNOR FOR REGULATING THE SUPPLY OF STEAM TO
CYLINDERS OF MARINE ENGINES."-A communication from Mr. Billotet,
residing at Marseilles, in the Empire of France.
Sealed the 14th June 1859, and dated the 15th December 1858.
PROVISIONAL SPECIFICATION left by the said Charles Frederic Vasserot
at the Office of the Commissioners of Patents, with his Petition, on the
15th December 1858.
I, CHARLES FREDERIC VASSEROT, of 45, Essex Street, Strand, London,
Patent Agent, do hereby declare the nature of the said Invention for "AN
IMPROVED PENDULUM GOVERNOR FOR REGULATING THE SUPPLY OF STEAM TO
CYLINDERS OF MARINE ENGINES," (a communication from Mr. Billotet, residing
at Marseilles, in the Empire of France,) to be as follows, and consists of a
pendulum which, by means of a guide and rollers, vibrates only in a plane
parallel to the axis of the ship. By means of one or more arms this pen-
dulum is connected with a vertical spindle, which has a screw tapped on its
upper end; upon the thread of this spindle is placed a muff, having a small
fly wheel attached to it, and which is kept from moving upwards on the thread.
by means of a ring and a set screw. Attached to this muff by means of two
pins, and stretching in a direction at right angles to the last-named screw
spindle, is another spindle or arm, having its extremities made of a fork or
gimbal form, having cut on its centre a right and left-handed thread, over
which a muff having similar threads formed in it works; the other extremity
of this forked arm is attached to a muff similar in every respect to the first..

page_text: described one, and mounted upon another spindle or rod having a thread cut
on it, and attached to and vibrating with the axle of the throttle valve.
The action of this arrangement is as follows:-When the ship is in a
horizontal position, the pendulum and throttle valve are so arranged as to
admit the proper quantity of steam, but when the ship is elevated at one end
so that the propeller (the screw or paddle, whichever it may be,) is raised
wholly or partially out of the water, and the load upon the engines being
removed, a smaller quantity of steam is required, and this is effected by means
of the pendulum hanging in a different direction, caused by the motion of the
ship, and by means of the apparatus described acting on the spindle of the
throttle valve, and closing or opening it as the case may be.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Charles Fréderic Vasserot in the Great Seal Patent Office on
the 15th June 1859.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CHARLES
FREDERIC VASSEROT, of 45, Essex Street, Strand, London, Patent Agent, send
greeting.
.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fifteenth day of December, in the year of our Lord
One thousand eight hundred and fifty-eight, in the twenty-second year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said Charles Fréderic Vasserot, Her special licence that I, the said
Charles Fréderic Vasserot, my executors, administrators, and assigns, or
such others as I, the said Charles Fréderic Vasserot, my executors, adminis-
trators, and assigns, should at any time agree with, and no others, from
time to time and at all times thereafter during the term therein expressed,
should and lawfully might make, use, exercise, and vend, within the United
Kingdoin of Great Britain and Ireland, the Channel Islands, and Isle of
Man, an Invention for "AN IMPROVED PENDULUM GOVERNOR FOR REGULATING
THE SUPPLY of STEAM TO THE CYLINDERS OF MARINE ENGINES," a communication
from Mr Billotet, residing at Marseilles, in the Empire of France, upon
the condition (amongst others) that I, the said Charles Fréderic Vasserot,
my executors or administrators, by an instrument in writing under my,
or their, or one of their hands and seals, should particularly describe
and ascertain the nature of the said Invention, and in what manner the
same was to be performed, and cause the same to be filed in the Great.

page_text: Seal Patent Office within six calendar months next and immediately after
the date of the said Letters Patent.
NOW KNOW YE, that the said Charles Fréderic Vasserot, do hereby
declare the nature of the said Invention, and in what manner the same is
to be performed, to be particularly described and ascertained in and by the
following statement, that is to say, it consists of a pendulum which, by means
of a guide and rollers, vibrates only in a plane parallel and coincident with
that of the axis of the ship. By means of one or more arms the pendulum.
is connected with a vertical spindle, which has a screw tapped on its upper
end; upon this screw is placed a muff, having a small fly wheel attached to it,
and which is kept from moving upwards by means of a ring placed above it,
and held by a set screw. Attached to this muff by means of a strap and pins,
and stretching in a direction at right angles to the last-mentioned screw..
spindle, is another spindle or arm, haying its extremities made of a forked or
gimbal form, and having cut on its center a right and left handed thread, over
which a union or junction having similar threads cut upon it works, so that by
turning the union to the right or left, this spindle is lengthened or shortened.
The other extremity of this forked spindle is attached to a muff similar in
every respect to the first described one, and mounted upon another spindle or
rod, having its one extremity formed as a screw, the other attached to and
vibrating with the axle of the throttle valve of the steam pipe.
In order to render this description more clear, and to illustrate generally
the form and action of my Invention, I have appended the accompanying
Drawings to this Specification; it is not intended nor wished, however, that
the form and arrangement of the various parts should be exactly confined to
that shewn in these Drawings, as various modifications and alterations may be
adopted to suit the particular application.
Fig. 1 is a front view, and Figure 2 a side view of the apparatus.; Figure 3
is an enlarged plan of the muff and the wheel, and the mode of attaching the
other forked spindle to the muffle. p is a pendulum or heavy weight, the rod
of which oscillates round the lever A; B; the rod of the weight passes through
it, and screws into à friction roller d, which rolls in the guide e, which is
composed of two plates, screwed together and held in their place. It will be
seen also that the weight of the pendulum can be raised or lowered on the
spindle by means of the nut and screw c. Fixed to the lever A, B, so as to be.
acted upon by the vibration of the pendulum, is the vertical rod i, h, having a
thread cut upon it between i and h; upon this thread is mounted the muff m,
with its wheel o, p, (see Figure 3). The socket c, d, has two pins, which
receive the fork of the transverse spindlej (Fig. 1); this socket turns freely

page_text: round the rod at i, j, (Fig. 3). b, d, (same Figure) is a ring of the same
diameter as the socket, which by means of the thumbscrew prevents the muff
from rising on the thread of the spindle; j¹ is the union on the transverse
spindle over the right and left-handed screws; k, the vertical spindle,
connected with j in the same way, by means of its forked end and the muff, as
at the other end before described; this spindle is connected with and actuates
the throttle valve t in the steam pipe.
The apparatus thus described acts in the following manner :-Suppose the
stern of the ship to be raised so as to throw the screw out of the water, the
resistance of the screw being removed, the speed of the engine is increased
beyond what is required, and unless the supply of steam be lessened damage
may accrue to the machinery. The elevation of the end of the ship causes the
pendulum to fall to the one end, as represented by the line h¹, c¹; this acts
upon the muff, and through it upon the horizontal spindle j, which takes the
position shewn by the dotted lines, and from thence upon the throttle valve,
which also takes the position shewn by the dotted lines, and thus wholly or
partially, according to the elevation of the end part of the vessel, shuts off the
steam, and relieves the machinery; on the vessel regaining its position, the
pendulum takes a corresponding place, and the throttle valve is similarly
operated upon.
Having now described my Invention, and how it is constructed and acts,
I wish it understood that what I claim and wish secured is, the general
arrangement and construction of parts, as herein described, for the purpose
of
regulating the supply of steam to the cylinders of marine engines.
In witness whereof, I, the said Charles Fréderic Vasserot, have hereunto
set my hand and seal, this Fifteenth day of June, in the year of our
Lord One thousand eight hundred and fifty-nine.
ATTA
TILAATTA
CH. FRED. VASSEROT. (L.s.)