Motive Power Engines.
Year: 1886

page_text: Motive Power Engines.
We, THEORDOR SCHILLER Architect and PAUL BREMICKE of Berlin in the
Kingdom of Prussia and German Empire do hereby declare the nature of this
invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:-
This Invention has for its object providing an apparatus by means of which
steam engines or other like motors may be instantly stopped from any part of the
factory (even when running at full speed) in order to prevent damage in case of an
accident for example, a single movement of a handle or the like sufficing to throw
the whole of the machinery, shafting and the like out of action independently of
the Engine driver or tenter.
The said apparatus consists of a combination of mechanism hereinafter described
whereby the hand lever controlling the valve gear is released and the valve gear
automatically shifted to such a position as to close the ports leading to the working
cylinder and stop the action of the piston by which motion is imparted to the
engine shaft.
And in order that our said Invention may be fully understood we shall now
proceed more particularly to describe the same and for that purpose shall refer to
the several figures on the annexed sheet of drawings the same letters of reference
indicating corresponding parts in all the figures.
Figures 1 and 3 of the accompanying drawings represent respectively a side and
a front elevation of an apparatus according to this invention applied to a horizontal
steam engine the parts being shown in the positions which they occupy when the
apparatus is in its normal condition and the engine is in motion.
Figures 2 and 4 represent similar views showing the position of the parts when
the apparatus has been brought into action so as to stop the engine.
Figure 5 illustrates our invention as applied to a vertical Engine.
The arrangement of apparatus illustrated in the drawing is shown in connection
with an ordinary flat slide valve but it is evident that our invention may be applied
to Engines or motors working with any other description of valve controlling the
admission and exhaust of the motive fluid.

page_text: The improved apparatus is provided with a frame b capable of rocking or
oscillating on a shaft a and provided at its upper part with a suitable segment
presenting notches c with which engages a hand lever d controlling the action of
the valve according to the motive power required.
The lever a turns upon an axis at e and is connected at k by a link i to the
arm g of a lever g m centred at h on a support or pillar f. An arm carrying a
counterweight is attached to the axis of this lever in order to ensure the proper
action of the apparatus The arm m of the aforesaid lever g m is connected to the
upper extremity of a slotted link n jointed at its lower extremity to an eccentric
rod o which by the intervention of the aforesaid slotted link operates a rod p
connected to the slide valve working in a valve chest q.
Facing the lower end of the frame b there are provided one or more electro
magnets which attract this part of the frame when excited and cause the frame
to swing on its axis so that the upper part or notched segment moves away from
and releases the lever d which falls over in the direction of the lever arm m and
the latter descends under the influence of its own weight. At the same time the
excentric rod o is moved downwards describing an arc of a circle so that the link n
connected therewith pulls the valve rod p outwards This latter motion places the
valve gear in a position in which both steam inlet ports are maintained closed in
all positions of the crank. The valve being thrown out of action by the mechanism
berein before described and the inlet and outlet ports maintained closed entirely
separate and perfectly closed layers or cushions of steam are formed on each side
of the piston whose motion is thereby retarded so that the engine is instantly and
easily stopped without jerk or recoil.
The mechanism may evidently be worked mechanically by means of wires in
place of electrically as hereinbefore described connections being established in
either case with all parts of the works or factory. The handles, pulls or switches
may be placed upon the machines themselves in such a position that in case of
accident the operative finding himself in danger may instantly bring the apparatus
hereinbefore described into action and arrest the motion of the machinery.
The action of the apparatus illustrated in Figure 5 will be readily understood
by reference to the drawing the same letters of reference being used to indicate
corresponding parts as in the arrangement hereinbefore described with reference to
figures 1 to 4.
It will be readily understood that the Invention is not necessarily limited to the
precise details as hereinbefore described and illustrated and particularly mentioned
in the claiming clause as their equivalents or mechanical substances such as are
within the knowledge of Engineers may be it is evident employed according to
circumstances.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is
An apparatus consisting of the arrangement and combination of parts or their
equivalents for operating substantially as herein before described for stopping steam
or other motive power engines from any distance or desired position independently
of the Engine Driver and in particular the arrangement such as is illustrated by the
drawings consisting of an oscillating frame b having therein notches c engaging
with a lever d centred at e for ordinarily controlling the action of the slide valve
according to the motive power required the said apparatus further comprising a
lever arm g connected to the said lever d by means of a link i and operating a
lever arm m centred to a support and provided with a counter weight for the
purpose of ensuring the correct action of the apparatus, the front end of the said
lever arm m being jointed to a slotted link n connected to the excentric rod o
operating the rod p attached to the valve in the valve chest q the said apparatus
operating in such a manner that the frame b is caused when its lower part is

page_text: attracted by the electro magnet r (or is operated so as to be moved in the required
manner) to swing back and release the lever d which falls over to lower the lever
arın m and by the aforesaid combination of links and levers to shift the valve rod
by the intervention of the link n so, or to keep the valve rod and valve in such
a position that the admission ports in the valve chest q are closed and the engine
is stopped without shock or jerk all substantially as hereinbefore described and
illustrated in the accompanying drawings.