A New or Improved Apparatus for Injecting Oil into Steam Boilers.
Year: 1896

page_text: Date of Application, 17th Nov., 1996-Accepted, 6th Feb., 1897
COMPLETE SPECIFICATION.
A New or Improved Apparatus for Injecting Oil into Steam
Boilers.
I, ARTHUR MUNROE PIERCE, of No. 783 Quincy Street, Brooklyn, New York,
United States of America, Solicitor, 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 aud by the following statement :-
My invention relates especially to devices employed with steam boilers to
remove and prevent incrustation, and keep the boiler free aud clean from deposits
of whatsoever nature; and has for its object the provision of a simple, cheap
and effective device whereby hydrocarbon oil, or other equivalent, may be supplie
in a regular and automatic manner to the feed water, said oil being carried into
the boiler in just such a quantity as to keep the same clean, and free from
scales, &c.
To attain the desired end, my invention consists essentially in certain novel
and useful combinations or arrangements of parts, and peculiarities of construction
and operation, all of which will be hereinafter first fully described and then
pointed out in the claims.
In the accompanying drawing forming a part hereof, is shown a vertical,
sectional view of a device embodying my invention.
1 is an oil supply tank, made of any approved material, and any desired size and
shape. Mounted upon the top of the tank 1, is a dome, 2, haring an air vent, 3,
and a glazed opening, 4, as located on the side of the device, but it may be placed
in the front, or at any other desired point.
At the side of the tank 1 is an oil filler, consisting of a pipe or elbow 5, provided
with an oil passage, 6, and an air vent passage 7. Upon the pipe 5 is mounted a
shell 8, having a funnel shaped receiver, 9. Passing through the shell 8 is a valve
stem 10, provided with an opening 11 therethrough, corresponding to the passage 6,
and a second opening 12, entering the axis of the stem, and opening opposite to
the air vent passage 7. The stem 10 is provided with a manipulating button or
wheel 13. In the drawing, the device as shown is full of oil to the continuous
horizontal line in the tank 1, the space below said line being occupied by water,
and the supply passage and air vent are closed. In filling the device, the valve
etem is turned at right angles to its prosent position, and as the oil is poured into
the funnel, 9, the air will escape from the tank 1, through the passage 7.
14 is a pipe lending from the feed water supply, and 15 is a continuation thereof,
to the boiler supply. 16 is a regulating valve, connected to the pipes 14 and 15
by a T 17, and also to a chamber 18. From this chamber 18 extends a down-
wardly projecting pipe 19 into the tank 1, and a pipe 20, 21 to a T 22. 23 is a
brauch pipe leading to the boiler connections. 24 is a passage through the
piece 22, leading to a sight glass 25, fixed to the outer extremity of the T22.
The sight glass has a connection 26 to a valve 27, communicating with a pipo 28,
leading to the boiler.
Fixed in the centre of the tank 1, beneath the dome 2 is a pipe 29, having at its
upper end a perforated cap 30, wherein is a ball valve, 31, controlled by a float 32.
Beneath the tank 1 the pipe 29 is connected to a T 33, provided with an oil drain
cock 34. 35 is a cock for draining the water from the tank when desired.
36, 37 is a pipe leading from the T33 to the T 22, wherein is a passage 38, lending

page_text: .
to a chamber 39, beneath the sight glass 25. Directly below said sight glass is
placed a valve stem 40, which passes through the chamber 39, und bears a
needle 41, which projects into the sight glass; 42 is manipulating wheel or
button, mounted upon the valve stem 40, and 43 is a cock for draining the sight
glass.
For convenience in illustrating the operation of my device, I have indicated
in the drawing the flow of water by sharp headed arrows, and the flow of oil
by round headed arrows.
When attached to the water feed of a boiler, and filled for use, the operation of
my device is as follows: The pressure of the water within the tank I forces the
oil through the pipes 29, 36 and 37 to the chamber 39; by slightly retracting the
valve stem 40, the oil will escape from said chainber, passing up the needle 11 in
single drops into the water in the sight glass 25, said sight glass forming a
commingling chamber. The water which passes into the tank 1 through the
pipe 19, is simply to force the oil therefrom, and take its place as it passes out,
but this water does not escape with the oil, the main flow of water being through
the pipes 20, 21 and 23, and through the sight glass, and this circulation takes
up the drops of oil as they pass from the needle, the amount of oil passing being
readily seen through the glass. This circulation of water through the sight glass
keeps said glass clean, and free from deposits. It will thus be seen that the oil
is thoroughly dispersed through the water, and the amount supplied may be
accurately regulated. By the peculiar arrangement of the oil feed valve within
the chamber or tank 1, all danger of fire, in case the sight glass should be
accidentally broken, is obviated, for upon the breaking of said glass, the pressure
within the oil tube 29 and the parte connecting it with the sight glass would be
removed, and the ball 31 would fall, effectually preventing the escape of the oil.
from the tank 1.
Having now particularly described the nature of my said invention, and in what
manner the same is to be performed, I declare that what I claim, is :-
1. In a device of the character herein specified, an oil tauk; an automatic valve
therein for controlling the escape oil; a pipe eutering said tauk and communi-
cating with the feed water supply; a sight glass having independent connections
with the oil supply and the feed water supply, and means for regulating the flow of
oil into the sight glass, the whole combined, aud arranged to operate, substantially
as shown and described.
2. In a device of the character herein specified, the combination with the oil
and water commingling chamber, formed by the sight glass, of independent oil
and feed water connections, arranged substantially as shown and described.
3. In a device of the character hereiu specified, the combination with a sight
glass forming a commingling chamber, and provided with means for causing
water to circulate therethrough, of an oil regulating valve, in which is comprised
a valve shell, and a valve stem provided with a needle point projecting into the
commingling chamber, substantially as shown and described.
4. The combination with the commingling chamber, of the circulating feed
water supply thereto, and the oil supply, arranged substantially as shown and
described.
5. In a device of the character herein specified, the combination with the sight
glass, the oil supply tube connected therewith, of an automatic controlling valve,
at the entrance to the oil supply tube substantially as showu and described.
Duted this 17th day of Novemba 1906
HERBERT HADDAN & Co.,
18 Buckingham Street, Strand, London, W.C., Agents to Applicant.