Improvements in Apparatus for Separating Oil, Grease, or other Extraneous Matter from Exhaust Steam and Feed Water.
Year: 1894

page_text: Date of Application, 2nd July, 1894
Complete Specification Left, 2nd Apr, 1895-Accepted, 4th May, 1895
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Separating Oil, Grease, or other
Extraneous Matter from Exhaust Steam and Feed Water.
We, JOHN GEORGE KINCAID, of Oakfield, Greenock, Renfrewshire, Engineer,
and WILLIAM CROCKATT, of 179 Nithsdale Road, Pollokshields, in the City of
Glasgow, Engineer, do hereby declare the nature of this invention to be as
follows:
This invention relates to apparatus for separating oil or greasy matter from the
exhaust steam on its passage from the engine cylinder to the condenser and from
be hot well to the feed pump supplying the boiler, the object of the invention
being to prevent the admission of oil or grease to the condenser or to the feed
water.
The exhaust pipe leading from the low pressure cylinder of an engine to the
condenser is formed with an internal helical vane or a series of such vanes the
effect of which is to set up a rotary motion of the steam passing through the pipe
whereby any oil or greasy matter is thrown by centrifugal action upon the sides of
the pipe and is collected in a trap or like chamber formed at the lower end of the
exhaust pipe at or near the point where the pipe is connected to the condenser.
From this collector the oil or grease and water of condensation are drained off by
a pipe into a chamber having fitted in it a strainer which consists of an inner
perforated chamber surrounded by a cage of wire netting covered with cloth or
other filtering material. The inner chamber is connected by a pipe to the lower
part of the condeuser the existence of a vacuum in which has the effect of creating
a suction upon the contents of the strainer whereby the water of condensation is
drawn through the filter to the condenser leaving the oil or greasy matter in the
strainer from which it may be periodically withdrawn. A second strainer of similar
construction is or may be provided in connection with the hot well to intercept any
oil or greasy matter that may remain in the feed water after leaving the air pump.
Between the hot well and this strainer a cock is introduced by means of which the
feed water may be directed either through the strainer or direct to the pump
suction. A second cock may be provided for shutting off the strainer when
changing the filter cloth. This strainer may be used as attached to the hot
well in cases in which the centrifugal oil separator in the exbaust steam pipe is not
employed.
Dated this 30th day of June 1894.
CRUIKSHANK & FAIRWEATHER,
62, St. Vincent Street, Glasgow, Agents.

page_text: Improvements in Apparatus for Separating Oil, Grease, or other
Extraneous Matter from Exhaust Steam and Feed Water.
We, JOHN GEORGE KINCAID, of Oakfield, Greenock, Renfrewshire, Engineer,
and WILLIAM CROCKATT, of 179 Nithsdale Road, Pollokshields, in the City of
Glasgow, 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 apparatus for separating oil or greasy matter from the
exhaust steam on its passage from the engine cylinder to the condenser and from
the hot well to the feed pump supplying the boiler, the object of the invention
being to prevent the admission of oil or grease to the condenser or to the feed
water.
Figure 1 of the drawings shews the application of the invention to an ordinary
inverted cylinder marine engine and Figure 2 a modification of a part of the
invention.
The exhaust pipe A leading from the low pressure cylinder of an engine to the
condenser B is formed with an internal helical vane C or a series of such vanes
the effect of which is to set up a rotary motion of the steam passing through the
pipe A whereby any oil or greasy matter is thrown by centrifugal action upon the
sides of the pipe A and is collected in a trap or like chamber D formed at the lower
end of the exhaust pipe A at or near the point where the pipe is connected to the
condenser B. From this collector D the oil or grease and water of condensation
are drained off by a pipe E into a chamber F having fitted in it a strainer
which consists of an inner anuular ring G formed on, and extending only a
short distance up from, the bottom of the chamber F, this ring being surrounded
by a cage of wire netting H covered with cloth or other filtering material 1.
The filtering material is doubled over the bottom of the wire netting H so
that the water of condensation cannot pass otherwise than through the cloth.
The chamber F is provided with a removable lid G which bears on and secures
the cloth and wire netting in position. The inner chamber formed by the
annular ring G is connected by a pipe J to the lower part of the condenser B
the existence of a vacuum in which has the effect of creating a suction upon the
contents of the strainer whereby the water of condensation is drawn through the
filter to the condenser B leaving the oil or greasy matter on the filtering cloth
or in the strainer from which it may be periodically withdrawn. A second
strainer K of similar construction is or may be provided in connection with the bot
well I to intercept any oil or greasy matter that may remain in the feed water
after leaving the air pump. Between the hot well L and this strainer K a cock M
is introduced by means of which the feed water may be directed either through the
strainer or direct to the pump suction. A second cock N may be provided for
shutting off the strainer when changing the filter cloth. For the purpose of
allowing air to escape the cover & of the strainer K is provided with an air relief
cock. This strainer K may be used as attached to the hot well L in cases
in which the centrifugal oil separator in the exhaust steam pipe A is not
employed.
As an alternative to the stationary vanes (shewn at Figure 1, vanes Oas
shewn at Figure 2 may be substituted, said vancs being mounted within the
pipe A and adapted to rotate by the action of the passing steam, the effect of
which rotation throws the oil or other extraneous matter against the sides of the
pipe A.

page_text: Having now particularly described aud ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. The combination of parts constituting the improved apparatus for separating
oil, grease or other extraneous matter from exhaust steam, substantially as
herein before described with reference to the annexed drawings.
2. As means for separating oil, grease or other extraneous matter from exhaust
steam the provision of a helical vane or vanes in the exhaust pipe, substantially as
and for the purpose set forth.
3. The improved strainer and accessories connected to the hot well and the pump
suction of an engine for intercepting the oil or greasy matter from the feed water
substantially as described with reference to the annexed drawings.
Dated this 1st day of April 1895.
CRUIKSHANK & FAIRWEATHER,
Chartered Patent Agents,
62, St. Vincent Street, Glasgow, Agents for the Applicants.