Improvements in Oil Injectors.
Year: 1893

page_text: COMPLETE SPECIFICATION.
Improvements in Oil Injectors.
A communication by FRANK HENRY CORNELL, of New York, in the County and.
State of New York, United States of America, Merchant.
I, WILLIAM PHILLIPS THOMPSON F.C.S., M.I.M.E., of the Agency for
Foreign Patent Solicitors, 6 Lord Street Liverpool and 6, Bank Street,
Manchester, both in the County of Lancaster and 323 High Holborn in the
County of Middlesex, Civil 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 :-
This invention relates to that class of injectors wherein a predetermined amount
of oil can be fed to the boiler with the water for the latter, and the objects of the
invention are to secure this result in a simple and satisfactory manner.
Reference is to be had to the accompanying drawings, forming part of this
Specification, wherein :-
Figure 1 illustrates a central cross section of the improved oil injector: and
Figure 2 shows the gauge
J¹.
The letter A in the drawings indicates a pipe that is designed to supply water to
a boiler. B is a pipe or tube adapted to be connected with pipe A, say, by a
suitable coupling a having a regulating cock A¹. The pipe B leads into a suitable
oil reservoir or chamber D, preferably terminating therein near its upper part as
shown. Within the pipe B is placed a smaller pipe E that extends within pipe B
a suitable distance and projects from the pipe B to near the bottom of the reservoir
or chamber D. The pipe or tube E is connected to and forms a continuation of
pipe B, and the water from pipe A passes through pipe B to pipe E and so on to
the reservoir D. A space is formed between pipes B and E as shown. A
convenient means for connecting pipes B and E so as to form the space b is to bore
the pipe B out for a portion of its length and leave a shoulder d, at which part
the threaded end of pipe E may be screwed into corresponding threads within
pipe B, as shown. With this arrangement, water from pipe B will not enter
space b.
A branch pipe F is connected with the pipe B at the space b, and the branch F
is provided with a plug or stopper e. By means of this arrangement, oil is fed into
the reservoir D when it is necessary to renew the same.
G is a by-pass pipe or tube having an extension tube f connecting with space b
of pipe B, and another extension tube 9 connecting with the main part or water-
passage-portion of pipe B, as shown. The pipe G is also provided with a suitable
valve or cock H to regulate the passage of oil, and it may also have a suitable vent
or drop cock 1.
Jis a suitable glass gauge connected with oil reservoir D to indicate the quantity
of oil therein. The graduated gauge plate is located at J' immediately to the rear
of the said glass, and on it are indicated the marks for gills, pints, quarts and
gallons, so that, as the oil is fed out and the water feeds in, the height of the water
will register on this meter, and thus predetermined quantities or volumes of oil can
be fed out and the total amount ascertained for any special period of time. The
quantities of oil to be fed out can, therefore, be nicely and automatically regulated
and adjusted.
The operation of the injector is as follows:-
The reservoir or chamber D being filled with oil, water from the pipe A will
pass through pipes B and E, and beneath the oil, thus raising the latter and
causing it to pass into space b and tube f. Water will also pass from pipe B into
pipe G through the pipe g above the valve or cock H, and thus an equilibrium at

page_text: the latter point will be established. The cock H can now be turned as much as
desired, whereupon oil will pass into the water in pipe G and by rising through the
same will enter the water in pipe A, and thus pass to the boiler. From this it will
be understood that oil will percolate into the feed water for the boiler by its own
gravity because the pressure is equalised and the oil rises to the feed water pipes,
and thus an even supply of oil can be produced. As the oil passes from reservoir D,
it will be replaced by incoming water entering below it, the latter always tending
to raise the oil to the cock H.
A particular advantage of this improvement is that, no matter what the pressure
in pipe A is, the pressure on the oil will be equalised. As the pressure on the
opposite sides of cock H will be the same, the oil can readily percolate through
the water above the cock H.
It will be observed that but one pipe is used between the main pipe A and the
reservoir D, for both passing water to the latter and carrying away the oil. By
this means, the feed of the oil to the boiler water is accomplished without creating
a flow for the purpose of carrying away the oil, the latter feeding automatically to
the water by the difference of gravity between itself and the water above.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, as communicated to me by
my foreign correspondent, I declare that what I claim is :-
1. In an oil injector, the combination, with a reservoir or chamber, of a pipe
entering the same, said pipe having two compartments, one for the supply of water
and the other for the exit of oil, and a separate by-pass pipe connecting the latter
compartment with the former, substantially as described.
2. In an oil injector, the combination of an oil reservoir D, with a pipe B entering
the same, a pipe E secured in pipe B, and projecting therefrom into reservoir D,
and forming a space band with a pipe G connecting at opposite parts with said
space and with pipe B, and a regulator H, connected with pipe G, substantially
as described.
3. In an oil injector, the combination of an oil reservoir with a pipe B, a
pipe E therein forming a space b, a pipe G, tubes and g, extending from
pipe G to space b, and pipe B, respectively, and a regulator H, substantially as
described.
Dated this 30th day of October 1892
WM. P. THOMPSON & Co.,
Agents for the Applicant.