AN APPARATUS FOR REGULATING THE ACTION OF THE GOVERNOR ON THE THROTTLE OR OTHER REGULATING VALVE IN STEAM OR OTHER FLUID PRESSURE ENGINES
Year: 1884

page_text: "
I LORENTZ ALBERT GROTH K.G.V. Civil Engineer, and Proprietor of the Patent
Industrial and Financial Agency 30 Finsbury Pavement London E.C. do hereby
declare the nature of said Invention for AN APPARATUS FOR REGULATING THE
ACTION OF THE GOVERNOR ON THE THROTTLE OR OTHER REGULATING VALVE IN
STEAM OR OTHER FLUID PRESSURE ENGINES," a communication to me from abroad.
by Don Jorge Graells, Mechanical Constructor, of Calle de Campo Sugrado No 24
Barcelona, in the Kingdom of Spain, and in what manner the same is to be per-
formed to be particularly described and ascertained in and by the following
statement:
The object of this apparatus is to make the key or steam valve independent of
the lever which transmits the movements of the governor, and the movements.
of which are transmitted to the valve by means of two clicks or triggers each
corresponding to one of the two movements which open or shut the valve.
The apparatus consists essentially of a lever which receives the movements of
the governor and transmits them by means of two clicks or triggers to a wheel
whose circumference is indented in an inverse way beginning from the point which
corresponds to the normal position of the lever on the axle of which is formed the.
steam valve.
The axle of the lever is independent from that of the wheel and therefore from
that of the valve which admits the steam.
The wheel is in direct communication with the key or valve, through being on
its own axle, or through both being in connection by means of levers or connecting
rods.
The only connection that exists between the two, the lever that receives the
movement of the governor, and the wheel are the clicks or triggers upon one of
which the lever acts and the other engages with the teeth of the wheel.
The lever being in its normal position the clicks rest upon the wheel, at the
slightest movement of the lever the clicks of one side moves the wheel while that
of the other side rises and releases it, not touching it again until the lever returns
to its normal position or is inclined in an opposite direction.
This disposition is very important because it prevents the continual oscillations
of the governor from being transmitted to the valve, which with the present systems
causes the valve to be continually opening and shutting when there is a change of
resistance, and retard the moment at which the velocity of the motor is to be
regulated.

page_text: The apparatus as represented in the drawings consists of the lever J J¹ at the
extremity I of which is joined the rod of the governor This lever has a vertical
branch K. K. which holds the clicks or triggers F F but they could be placed on
the same horizontal branch.
The revolving axle of the lever is held by a support L which by means of screws
is held in the most convenient point for the inspection of the apparatus.
The clicks F and F consists of a steel spring screwed at the centre to a projection
at the extreme end K of the lever its ends are strengthende by iron in order to
give them due resistance to operate upon the wheel. They are supported by
bolts G G¹ placed so that the clicks F F¹ rest upon the wheel A. C. when the
index H points to O.
When the lever is inclined to the left the click F. moves the' wheel in the same
direction and the right remains upon the bolt G¹ and does not touch the wheel
again until the lever points to O. In order that, if the index runs up to 1 the click
may force the wheel in equal ratio; on moving backwards the lever leaves the
wheel in the same position in which it has placed it which does not revolve in a
contrary direction until the lever passes from. O and moves the click F Therefore
the oscillations of the governor when not at the normal speed only assist the
operation of the wheel as at each movement between 0 and 1 the click presses the
wheel forward contrary movements' not being transmitted.
The wheel A B C D has the same axle as the lever but their motions are
independent. A circular sector could be substituted for this wheel.
The valve (which admits the steam) M receives the movements of the wheel
through the rod N N' and lever O O¹.
יה
In the lower part of the wheel and its support L a brake P P¹ can be applied
more or less against the wheel. by means of a screw to reduce its speed.
The same has an index. H' to show by its graduations when the wheel presents
the same proportions as the valve is open or shut.
On the extremity J1 of the lever can be suspended. weights if necessary in order
to equalize the action of the governor which varies when a different normal speed is
applied or an altered pressure on the boilers.
my
Having now particularly described and ascertained the nature of
said
invention and in what manner the same is to be performed I declare that what
I claim is
The Apparatus as above described and illustrated in the drawings for regulating
the admission valves of steam engines not transmitting the oscillations of the
governor but only the motions which tend to keep the machine at its normal speed
and preventing the influence of movements of the governor upon the valve that
would retard the machine maintaining its normal velocity, consisting of two
clicks FF working upon two series of opposite teeth A. C on a wheel or sector
that operates the key or valve for admitting steam which wheel receives only the
motion of the clicks fixed or attached to a lever K upon the rod J J₁ moved by the
governor, which clicks engage or disengage alternately with the teeth according to
the direction of the movement, supporting itself so as to remain free on a bolt fixed
to the support L in order that prejudicial movements may not be transmitted, and
fitted with brake P P and index H.
Dated thio 92nd day of October 1884