Improvements in and relating to Marine or Propeller Engines.
Year: 1896

page_text: Date of Application, 5th Oct., 1896-Accepted, 5th Dec., 1896
COMPLETE SPECIFICATION.
Improvements in and relating to Marine or Propeller Engines.
I, EDMUND WOODS of 70 Rose Hill Street, Derby in the County of Derby,
Stationer, 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 :-
The object of my invention is to provide a governing apparatus for marine or
propeller engines to prevent "racing" in a rough sea when the propeller is partly
or wholly raised out of the water.
In describing my invention reference will be had to the sheet of drawings
forming a part of this specification:-
Figure 1 being a vertical section on line a. a. of Figure 2.
Figure 2 is a side elevation shewing my improved apparatus.
In carrying out my invention I provide a re-lay cylinder A having a steam
chest B on the top thereof, mounted on the latter and pivotted thereto at C is a
cage or frame D which may be tilted by screws E E passing through angle pieces
or the like F F fixed to the relay cylinder; pivotted on or near the top of the
cylinder are two fingers G G which are carried through slots at either or both ends
of the slide valve piston H which is carried right through both ends of the steam
chest to accommodate the fingers, these latter pass upwards through the centre of
the frame or cage and on each side of a ball I of metal or other suitable substance,
the screws K K being arranged to regulate the cut off. The fingers G G may be
pivotted either above or below the slide valve piston as found most desirable and
the governor may be worked by either vacuum or steam.
The cylinder A is fixed level or parallel with the keel of the vessel, the frame D
being adjusted to its proper level by means of the screws E E in case of unequal
loading.
The operation of the apparatus is as follows:-As the vessel rises at the stem
the ball rolls backwards and strikes the finger G thus opening the cylinder port
and causing the piston L to travel in the same direction and the latter being
connected to the throttle valve will cut off the steam, thus by the time the full head
of steam which the engines were receiving is exhausted in the cylinders of the
engine the stern will be out of the resisting water and "racing" be prevented:
sufficient steam however is allowed to pass to the engines to keep them in motion
until the stern sinks again when the ball will roll forward and strike the other
finger G and reverse the action of the governor.
The piston L being made to travel faster or slower to accommodate long or short
seas by regulating the cut off screws K K.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is.
In combination with a relay cylinder A and steam or vacuum chest B, the
frame D pivotted as at C and being provided with adjusting screws E said frame
containing a ball I adapted to roll backwards and forwards and come into contact
with fingers G the latter opening and closing the ports by means of the slide

page_text: valve piston H; screws KK being provided for adjusting the cut off; all
substantially as described and illustrated.
Dated this 3rd day of October 1896.
W. SWINDELL,
Imperial Chambers, Albert Street, Derby, Agent for the Applicant.