Year: 1887

page_text: Date of Application, 27th June, 1887
Complete Left, 24th Mar., 1888
Complete Accepted, 27th Apr., 1888
I, ALEXANDER TURNBULL, of 139 Brook Street, Glasgow, in the County of Lanark,
North Britain, Engineer, do hereby declare the nature of this Invention to be as
follows, that is to say :-
My said Invention has for its object, to regulate the feeding of boilers by means of
improved and simple apparatus of a kind not liable to get out of order.
My improved apparatus is intended to be used in cases in which a boiler is fed by a
continuously acting pump, the admission of water into the boiler being stopped when
there is sufficient water in the boiler by preventing the inlet valve into the boiler from
opening, the water pumped then passing through a suitably loaded by-pass valve.
In carrying out my Invention a lever arranged within the boiler has one arm which
is horizontal connected to a float, whilst another arm which is vertical or in some other
position to suit the position of the feed inlet valve has connected to it a wedge-shaped
block which is movable between the feed inlet valve and a stationary stop or projection.
The feed inlet valve may be a simple conical-seated valve which opens by lifting and
which is fitted in a valve box fixed to the end or other part of the boiler, the valve box
being provided with a door to give access to the valve and with a screw spindle for
fixing the valve down when required. The valve box communicates with the interior
of the boiler through a horizontal passage and the wedge-shaped block is connected to
the lever by a rod passing through this passage.
When the feed inlet valve is
arranged as described, the underside of the wedge-shaped block rests on the valve and
when the water in the boiler is below the proper level the thinner part of the block is
between the valve and the stop above it and the valve is free to open, but as the water
rises to the proper level the float acting on the lever makes it move the block so as to
place it with its thicker part between the valve and the stop and thus limit or prevent
the opening of the valve. The lever and wedge-shaped block is applicable with feed
inlet valves of various kinds and placed in various positions on the boiler; and in some
cases the arm of the lever may be made with a wedge-shaped or inclined end to bear
directly on the valve. The improved regulating apparatus is also applicable when the
feed water is forced into the boiler otherwise than by a pump; and in some cases the
wedge-shaped block may be connected to the valve in a manner to open it when
the float descends.
1000
EDMUND HUNT,
Applicant's Agent.

page_text: I, ALEXANDER TURNBULL, of 139 Brook Street, Glasgow, in the County of Lanark,
North Britain, Engineer, 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, that is to say :-
My said Invention has for its object to regulate the feeding of boilers by means of
improved and simple apparatus of a kind not liable to get out of order.
My improved apparatus is intended to be used in cases in which a boiler is fed by a
continuously acting pump, the admission of water into the boiler being stopped when
there is sufficient water in the boiler by preventing the inlet valve into the boiler from
opening, the water pumped then passing through a suitably loaded by-pass valve.
On the accompanying sheet of explanatory drawings, figure, 1, is a vertical section
of part of a steam boiler as provided with my improved feed valve details, figure, 2,
being a section of some parts as at right angles to figure, 1.
In carrying out my Invention a lever, ABC, arranged within the boiler, D, has one
arm, A, which is horizontal connected to a float, E, whilst another arm, B, which is
veatical (or in some other position) to suit the position of the feed inlet valve, F, has
connected to it a wedge-shaped block, G, which is movable between the feed inlet
valve, F, and a stationary stop or projection, H. The float, E, is partly counter-
balanced by a weight on the third arm, C, of the lever. The feed inlet valve, F, may
be a simple conical-seated valve which opens by lifting and which is fitted in a valve
box, J, fixed to the end or other part of the boiler, D, the valve box being provided
with a door, K, to give access to the valve and with a screw spindle, L, for fixing the
valve, F, down when required. The valve box, J, communicates with the interior of
the boiler through a horizontal passage, M, and the wedge-shaped block, G, is con-
nected to the lever, B, by a rod, N, passing through this passage. When the feed
inlet valve, F, is arranged as described and as shown in the drawing, the underside of
the wedge-shaped block rests on the valve; and when the water in the boiler is below
the proper level the thinner part of the block is between the valve and the stop, H,
above it and the valve is free to open, but as the water rises to the proper level the
float, E, acting on the lever, ABC, makes it move the block, G, so as to place it with
its thicker part between the valve, F, and the stop, H, and thus limit or prevent the
opening of the valve. The wedge-shaped block, G, is adjustably connected to the
rod, N, by a short screw spindle, P, which has its outer end squared so that it can be
turned when the valve-box cover, K, is removed, a pair of projections on the inside of
the cover preventing it from turning when the cover is fixed in place.
The lever and wedge-shaped block is applicable with feed inlet valves of various
kinds and placed in various positions on the boiler; and in some cases the arm of the
lever may be made with a wedge-shaped or inclined end to bear directly on the valve.
The improved regulating apparatus is also applicable when the feed water is forced

page_text: into the boiler otherwise than by a pump; and in some cases the wedge-shaped block
may be connected to the valve in a manner to open it when the float descends. It is
an important practical advantage of my improved boiler feed regulating apparatus
that the movement of the wedge-shaped block, G, is obtained in a direct manner from
the float lever, ABC, without the intervention of a rod working through a stuffing
box or otherwise made liable to stick from excessive friction or otherwise.
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 boiler feed regulating, apparatus providing a float-actuated wedge-shaped block
in connection with the feed inlet valve the parts being arranged and operating sub-
stantially as and for the purposes hereinbefore described.
Dated this Twenty-third day of March 1888.
EDMUND HUNT,
Applicant's Agent.
EDMUND HUNT,
Applicant's Agent.