Improvements in Apparatus for Stopping Steam and other Engines.
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Stopping Steam and other
Engines.
I, JAMES TATE of 74, Chatham Street, Bradford, in the County of York,
Foreman Mechanic do hereby declare the nature of my invention for IMPROVEMENTS
IN APPARATUS FOR STOPPING STEAM OR OTHER ENGINES, to be as follows :—
The object of my invention is to stop engines automatically when running above
the regulated speed; also to so arrange the apparatus that engines may be stopped
from any part of the works to which communication is made.
The apparatus may be applied to any of the rods between the governors and the
regulating lever of the throttle, equilibrium, or drop expansion valve of the engine,
and consists of a casing in which is fitted a coiled spring that is secured to a
spindle, upon which is also secured a catch weight mounted on the spindle in such
a manner that when liberated the spring will uncoil and disconnect the rods
between the governors and valve lever, allowing the latter to close the valve, and
at the same time opening an air valve in connection with the engine condenser
thereby stopping the engine; or in lieu of the coiled spring a suspended weight
may be used to accomplish my object.
The apparatus may be operated upon by an electro magnet, or by wire or cord
connections communicating with the various parts of the works, and in order to
stop the engine when running above the regulated speed, the electric circuit is
completed by some part of the governors coming in contact with the electric wires,
by which the catch weight is disengaged and the engine stopped.
When electric wires are run to various parts of the works by completing the
electric circuit by any well known means the catch weight is disengaged and the
engine stopped without going near the engine; or the apparatus may be operated
upon and liberated by arranging wire or cord connections that when pulled, the
catch weight is liberated and the engine stopped as before described.
Th
Desemba 100A
WAUGH & CHAPMAN,
Agents for the Applicant.

page_text: Improvements in Apparatus for Stopping Steam and other
Engines.
I, JAMES TATE, of 74 Chatham Street Bradford, in the County of York,
Foreman Mechanic, do hereby declare the nature of any invention for "IMPROVE-
MENTS IN APPARATUS FOR STOPPING STEAM AND OTHER ENGINES," and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement:-
The object of my invention is to stop engines automatically when running above
the regulated speed; also to so arrange the apparatus, that engines may be stopped
from any part of the works to which communication is made with the apparatus
which may be applied to any of the connecting rods between the governors and
the regulating lever of the throttle, equilibrium, or drop expansion valve.
In the accompanying drawings Fig. 1, represents a front elevation of the interior
of my improved apparatus. Fig. 2, is a side view, Fig. 3, a back view, Fig. 4, a
view shewing the manner in which the apparatus may be connected to the throttle
or other steam regulating valve of the engine, and Fig. 5 is an elevation partly in
section of the nir valve which is in connection with the engine condenser.
The casing A, of the apparatus may be circular or of any other convenient shape,
and by preference is attached immediately above the lever B, of the throttle or
other steam regulating valve to the ordinary connecting rods C, of the governors.
At one end of the rods C, an enlargement is formed for the reception of a hollow
boss D, at the back of the casing A, and in which I place a coiled spring that is
secured to the hollow boss and to the spindle E, passing through the same. On the
spindle E, within the casing, I secure a short lover F, which is in the position as
shewn by Fig. 1, when the apparatus is set for operating on the valve V, when the
engine is running; the said lever being moved to the position by the handle G, and
held there by the catch spring H.
The spindle E, projects some distance through the hollow boss, and is cut with a
recess as shewn by Fig. 3, in which rests a projection forming part of the connecting
link C, which is also jointed to the before named lever B.
The electro magnet K, is placed in the interior of the said casing, and wires
connected thereto extend to various parts of the works; and when it is desired to
close the valve V, the electric circuit is completed by any well known means, which
causes the magnet K, to attract the armature L, and the projecting pin L', attached
thereto, to operate on the oatch N, of quadrant weight N', causing it to move in
the direction of the arrow, and the small circular boss D₁, at the back thereof,
(shewn by dotted lines) to strike the spring catch H, and thereby liberate the short
lever F, and coiled spring within the hollow boss; the coiled spring moving the
spindle E, in the direction of the curved arrow in Fig. 3, displaces the projection
resting in the recess, thereby allowing the connecting link C', to drop and close
the valve; which may be accelerated by placing a weight on end of lever B, as
shewn by dotted lines, or by the quadrant weight P, which I operate in the
following manner.

page_text: To the end of the spindle E, I secure a disc Q, in the face of which I place a pin at
some distance from the centre of the spindle, and mount on the pin a rod R, the
bottom end of which is prepared with a hook, which when the spindle E, is moved
in the manner as before described, engages with the quadrant weight P, causing it
to turn on the stud on which it is mounted and lock the lever B, down as shewn
by dotted lines, thus keeping the valve closed shutting off all steam.
In order to stop the engine when running above the regulated speed, the electric
circuit is completed by some portion of the governors rising to such a height that
the same comes in contact with the electric wires; by which the magnet K, is
brought into action, and the connecting link C¹, displaced in the manner as before
described.
The quadrant weight N', may also be operated by a wire or cord connection U,
with the various parts of the works, which when pulled raises the armature L, and
dislodges the connecting link C¹, in the manner as before described.
In order to bring the engine to a stand as early as possible when operated upon
as before described, I connect an air valve with the condenser and some portion of
the pipes behind the valve V. The air valve is shewn partly in section by Fig. 5,
and is formed with two dish plates T, and T¹, the former having a number of
perforations through the plate and is connected by pipe Pl, to some portion of the
condensing apparatus; and the top plate T¹, by sm pipe P, to the pipes between
valve V, and the engine. Between the dish pla' is a sheet of india rubber R'
held clear of the centre of the bottom or per rated plate T, when the engine is
standing, by the spiral spring S, and rod S¹, 's admitting air to the condenser.
On opening the valve V, steam is admitted to the top side of the india rubber R¹,
which overcomes the spring, deflecting the india rubber, and covering the
perforations in the bottom plate T, thereby closing the communication between
the condenser and atmosphero, which opens again whenever the pressure of steam
is removed from the top side of the india rubber.
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
The disengaging apparatus within the casing A, suspended by the governor
connecting rods used in combination with the engine regulating valve all arranged
substantially in the manner and for the purpose as hereinbefore described and as
illustrated by the accompanying drawings.
The air valve shewn by Fig. 5, arranged substantially in the manner and for the
purpose as herein before described.