A New Method for Checking an Engine when Suddenly Deprived of its Load.
Year: 1894

page_text: Date of Application. 19th Sept., 1894
Complete Specification Left, 10th Apr., 1895-Accepted, 8th June, 1895
PROVISIONAL SPECIFICATION.
A New Method for Checking an Engine when Suddenly Deprived of
its Load.
EDWIN WADDINGTON 73 Marsh Street Barrow-in-Furness Engineer do hereby
declare the nature of this invention to be as follows :—
When using the varying pressures in the steam pipe as a governor for a steam
engine I claim the idea of shutting off the steam from the top side of governing
piston or diaphragm about the time the throttle valve is closing and the release of
the said steam from the top side of the piston.
One mode of application is as follows
Let A be a steam cylinder with a piston fitted with a through rod one end E is
coupled to the throttle valve (although I do not confine myself to a piston as it
may be applied to a ram or diaphragm of any kind). The pipe B is connected to
the boiler & the pipe C to the steam pipe (say just below the throttle valve).
The piston D is held in position by the boiler pressure say 100 lbs. on the one
side & the pressure in the steam pipe & the tension on the spring F on the other
side. When the load is taken off the engine the pressure in the steam pipe is
reduced the piston D is forced down & the throttle valve closed or part closed.
But just about this time the steam is shut off at B by the connection H & the
governing piston D being drilled with a small hole L the steam above D is slowly
displaced through this to the under side by the tension on the spring F & the
engine is again opened out to steam.
Dated the 18th day of September 1
1604
EDWIN WADDINGTON,
73, Marsh Street, Barrow-in-Furness.
A New Method for Checking an Engine when Suddenly Deprived of
its Load.
EDWIN WADDINGTON Marine Engineer 73 Marsh Street Barrow-in-Furness
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 drawing referred to is the one left with the Provisional Specification.
Let A be a steam cylinder fitted with a through rod.
The pipe B is connected direct with the boiler & the pipe C to the main steam
pipe on the engine side of the throttle valve.
The piston is held in its normal position by the boiler pressure (say 100 lbs.)
acting on the top side & the pressure in the steam pipe (say 90 lbs.) on the other
side & the tension on the spring F. When the load is taken off the engines the
pressure on the underside of the piston is reduced. The piston will be forced
down & the throttle valve closed or part closed by the connection E. But about
the time of closing the steam is shut off from the boiler by the connection H & the
Price 8d1

page_text: piston being drilled with a small hole L the steam is slowly displaced to the
underside of the piston by the tension on the spring F & the engine is again
opened out to steam.
4.
I F
! →
Having now particularly described & 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 :
When using the varying pressures in the steam pipe as a governor for a steam
engine
(1st.) The connecting of the governor piston, ram, rod, or diaphragm to the
engine side of the throttle valve.
(2nd.) The closing of the governor boiler steam valve about the time the throttle
valve is closing.
(3rd.) The release of steam through or down the sides of the governing piston.
(4th.) The bringing about the return of the piston by opening it to the
atmosphere or connecting it to any other reservoir.
Dated this the 3rd day of May 1895.
EDWIN WADDINGTON.