An Improved Automatic Vacuum Destroyer for Steam Engines and other Purposes.
Year: 1898

page_text: Date of Application, 2nd Apr., 1898
Complete Specification Left, 28th Dec., 1898-Accepted, 4th Feb.,
1899
[Communicated from abroad by JOHN THOMPSON and WILLIAM HENRY CAVE,
both of Pereslaff, Zelesky, Russia.]
An Improved Automatic Vacuum Destroyer for Steam Engines
and other Purposes.
I, EDMUND CHADWICK, of 80, Saint George's Road, Bolton, in the County of
Lancaster, Engineer and Patent Agent, do hereby declare the nature of my said
invention to be as follows:-
This invention relates to an improved automatic vacuum destroyer for steam
engines and other purposes such as-steam pipes, exhaust pipes, drying
cylinders, and the like and is designed for the purpose of destroying vacuum
immediately steam is shut off from a steam cylinder thereby facilitating the
stoppage of an engine and preventing water being drawn into the steam
cylinder and other parts leading thereto and therefrom and consists of a metallic
casing or valve-box in which is disposed a seating on which sits a valve pro-
vided with guides or wings to ensure of the same maintaining its correct
working position. The valve is provided with an elongated projection having
an opening or slot to receive the hooked end of an outside arm or stay, the other
end of the latter being provided with a threaded boss in which is located an
adjusting screw provided with a lock nut or its equivalent to operate in connec
tion with the outer end of a spindle, the latter being provided almost its entire
length or otherwise with grooves to admit of lubrication thus forming a liquid
joint. The said spindle is mounted in a cylinder disposed above the before
mentioned metallic casing or valve-box. The lower end of the metallic casing
or valve-box is provided with a screwed nipple or its equivalent for connecting
the same to the exhaust pipe or other parts before mentioned. The cylinder is
provided with an inlet for steam for the purpose of actuating the piston, which
operation closes the valve and directly steam pressure is shut off the valve opens
and thus destroys the vacuum. The casing or valve-box may be provided with
stuffing-boxes where necessary.
Data the 1st day of Auril 1908
;
An Improved Automatic Vacuum Destroyer for Steam Engines
and other Purposes.
I, EDMUND CHADWICK, of 80, Saint George's Road, Bolton, in the County of
Lancaster, Engineer and Patent Agent, a communication from John Thompson
and William Henry Cave, both of Pereslaff, Zelesky, Russia, do hereby declare
Price 8d

page_text: the nature of my said 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 relates to an improved automatic vacuum destroyer for steam
engines and other purposes such as-steam pipes, exhaust pipes, drying
cylinders, and the like and is designed for the purpose of destroying vacuum
immediately steam is shut off from a steam cylinder thereby facilitating the
stoppage of an engine and preventing water being drawn into the steamı
cylinder and other parts leading thereto and therefrom and consists of a metallic
casing or valve-box in which is disposed a seating on which sits a valve pro-
vided with guides or wings to ensure of the same maintaining its correct
working position. The valve is provided with an elongated projection having
an opening or slot to receive the hooked end of an outside arm or stay, the other
end of the latter being provided with a threaded boss in which is located an
adjusting screw provided with a lock nut or its equivalent to operate in connec-
tion with the outer end of a spindle, the latter being provided almost its entire
length or otherwise with grooves to admit of lubrication thus forming a liquid
joint. The said spindle is mounted in a cylinder disposed above the before
mentioned metallic casing or valve-box. The lower end of the metallic casing
or valve-box is provided with a screwed nipple or its equivalent for connecting
the same to the exhaust pipe or other parts before mentioned. The cylinder is
provided with an inlet for steam for the purpose of actuating the piston, which
operation closes the valve, and directly steam pressure is shut off the valve opens
and thus destroys the vacuum. The casing or valve-box may be provided with
stuffing-boxes where necessary.
DESCRIPTION OF DRAWINGS.
Fig. 1 is a longitudinal sectional elevation of the improved automatic vacuum
destroyer for steam engines and other purposes. Fig. 2 an outside elevation of
same. Fig. 3 a transverse section through line AB, and Fig. 4 a transverse
section through line CD in Fig. 1.
In all the figures the same letters are employed to indicate corresponding parts.
E is the metallic casing or valve-box; G valve seating; H valve; I guides
or wings; J elongated projection; K opening or slot; L hooked end; M outside
arm or stay; N threaded boss; 0 adjusting screw; P lock nut; R spindle;
S grooves; T cylinder; V nipple, and W steam inlet pipe.
In the metallic casing or valve-box E is disposed the valve seating G on which
sits the valve H provided with the guides or wings I to ensure of the same main-
taining its correct working position. The valve H is provided with the
elongated projection J with the opening or slot K to receive the hooked end L
of the outside arm or stay M. The other or opposite end to that of the hooked
end L of the outside arm or stay M is provided with the threaded boss N in
which is located the adjusting screw 0 secured in position by the lock nut P;
the end of the screw 0 operating in connection with the outer end of the
spindle R. The spindle R is mounted in the cylinder T disposed above the
metallic casing or valve-box E; and the spindle R is provided almost its entire
length or otherwise with the grooves S to admit of lubrication thus forming a
liquid joint. The lower end of the metallic casing or valve-box E is provided
with the screwed nipple V for connecting the same to the cylinder of a steam
engine, exhaust pipe, drying cylinders, and the like. The cylinder T is pro-
vided with the inlet pipe W for admitting steam to actuate the piston or
spindle R, which operation closes or forces the valve H on its seat by means of
the outside arm or stay M. Immediately steam pressure is shut off from the
inlet pipe W the spindle R and the arm or stay M drop and allows the valve H
to fall from its seat G, and admits atmospheric air, which passes through the
side openings X in the casing E, then through the open valve seating G and

page_text: nipple V to the cylinder of the steam engine, exhaust pipe, condenser, drying
cylinders, and the like it may be attached to, and thus destroys the vacuum
automatically, which will prevent or minimise accidents so prevalent through
negligence.
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, I declare that what I
claim is:-
The improved automatic vacuum destroyer for steam engines and other pur-
poses such as-steam pipes, exhaust pipes, drying cylinders and the like,
consisting of the metallic casing or valve-box E, valve seating G, valve H with
the elongated projection J and opening or slot K in which engages the hooked
end L of the outside arm or stay M, the other end of the latter being provided
with the threaded boss N in which is located the adjusting screw in connection
with the outer end of the spindle R mounted in the cylinder T, the whole being
connected, applied, and operating substantially as described and illustrated in
the annexed drawings in Figs. 1 to 4 inclusive.
Dated the 27th day of December 1898.