Improvements in or relating to Apparatus for Separating Grease from the Exhaust Steam of Marine and other Engines.
Year: 1894

page_text: Date of Application, 2nd Oct., 1894
Complete Specification Left, 2nd Aug., 1895-Accepted, 7th Sept.. 1895
TRUY IDIUNAL SFBOLFICATION.
Improvements in or relating to Apparatus for Separating Grease from
the Exhaust Steam of Marine and other Engines.
I WILLIAM JAMES BAKER of Peasholme House Scarborough in the County
of York, Mechanical Engineer do hereby declare the nature of this invention to
be as follows
This invention has for its object the separation from the exhaust steam of marinë
and other steam engines of the grease which it carries over mechanically or in the
form of vapour from the cylinders and valve chests, wherein it has been employed
as a lubricant for the pistons and valves respectively.
To carry out this invention, two steam tight vessels are employed, the upper
vessel being the grease separator and the lower vessel a storage tank into which
the separated grease gravitates.
The upper vessel or separator is by preference rectangular in plan, with a
quickly inclined bottom, which facilitates the flowing away of grease and water to
the lowest point, where an outlet or waste-pipe is fixed.
The exhaust steam, immediately after entering the separator comes in contact
with a set of louvres or baffle-plates, which extend across the separator, and deflect
the current of steam upward or downward according to the angle at which they
are fixed. An inclined baffle-plate separates this first set of louvres.from a second
set of similar construction, through which the steam passes also on its way to the
condenser.
The object of the iuclined baffle-plate is to conduct the steam to the upper part
of the separator, where it passes through a space between the second set of louvres
and the cover, thence downward and through the louvres to the outlet.
The steam upon emerging from the cylinders into the separator deposits the
grease it contains upon the louvres and inclined baffle-plate above mentioned,
from whence it runs down to the inclined bottom, and out by the waste-pipe, to
the second or lower vessel, which is simply a storage cistern and may be fixed in
any convenient position below the separator.
The separator may be shut off from the storage cistern by means of a valve
in the waste pipe, which when closed enables the lower vessel to be emptied
without disturbing the vacuum which exists in the separator, owing to its connection
with the coudenser.
As a modification of the form of separator described above, a shell of similar
form is employed with an inclined bottom, but in place of the two sets of louvres
a baffle-plate is fixed vertically across the separator, dividing it into two nearly
equal parts, but sufficient space is left above the baffle-plate to allow the easy
passage of the full current of steam.
A pipe from the exhaust inlet, and of the full area thereof, passes through the
baffle-plate and is bent and opens downward, in order that the rush of steam from
the cylinders may take a downward course and at once deposit a great portion
of the grease it contains. The flow of steam then passes. upward over the top of
the battle-plate, and downward to the outlet pipe communicating with the condenser,
The outlet pipe rises a few inches into the separator, and above the open end of it
is placed a sloping baffle-plate to prevent drops of grease being splashed into the

page_text: pipe. Holes at the bottom of the vertical baffle-plate are provided, to allow the
separated grease and water to flow to the waste-pipe.
Dated this First day of October 1894.
WILLIAM J. BAKER,
Peasholme House, Scarborough,
Improvements in or relating to Apparatus for Separating Grease from
the Exhaust Steam of Marine and other Engines.
I, WILLIAM JAMES BAKER, of Peasholme House, Scarborough, in the County
of York, Mechanical 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 has for object to separate from the exhaust steam of marine and
other steam engines, the grease which is carried over mechanically or in the form
of vapour from the cylinders and valve chests, in which it has been employed as
a lubricant for the pistons and valves respectively.
In carrying out my invention 1 provide two steam tight vessels, the upper
vessel bring the grease separator, and the lower a storage tank into which the
separated grease gravitates.
The upper vessel or separator is preferably rectangular in plan, with a quickly
inclined bottom, to facilitate the flow of grease and water to the lowest point,
where an outlet or waste-pipe is fixed.
In the separator I arrange a set of louvres or baffle-plates which deflect the
current of steam entering the latter upward or downward, according to the angle
at which they are fixed.
1 also provide a second set of louvres similar to the first set and separated from
the same by an inclined baffle-plate.
The object of the inclined baffle-plate is to conduct the steam to the upper part
of the separator, where it passes through a space between the second set of louvres
and the top of the separator and then downward and through the said louvres to
an outlet at the bottom of the separator leading into the condenser.
.
The separator may be shut off from the storage tank by a valve in the waste-
pipe, which when closed enables the lower vessel to be emptied without disturbing
the vacum which exists in the separator, owing to its connection with the
condenser.
I sometimes employ, in lien of the two sets of louvres as above described,
a baffle-plate fixed vertically across the separator so as to divide it into two
nearly equal chambers, but leaving sufficient space above the baffle-plate to allow
of the easy passage of the full current of steam. The pipe from the exhaust inlet,
in this case, passes through the baffle-plate, and is bent and opens downward.
Above the open end of the outlet pipe advantageously provide a sloping baffle-
plate to prevent the splashing of drops of grease into the outlet pipe. The lower
end of the vertical baffle-plate is provided with holes to allow the separated grease
and water to flow to the waste-pipe.
To enable my invention to be fully understood I will describe the same by
reference to the accompanying drawings, in which :—
Figure 1 is a sectional elevation of a grease separator constructed according
to my invention and shewn in connection with the cylinder and condenser of
a vertical marine engine:
Figure 2 is a vertical section of a modified form of my grease separator:

page_text: Figure 3 is a sectional elevation of my improved grease separator adapted to
fit on the top of the condeuser:
Figure 4 is a transverse sectional elevation of a cylindrical grease separator
made according to my invention :
Figure 5 is a modification of my grease separator suitable for a stationary
condensing or non condensing engine.
The same reference letters refer to the same or corresponding parts in the
several figures.
a is the steam cylinder and b the condeuser. c is the upper vessel or separator
having the inclined bottom c and d the waste pipe connecting the lowest point of
the same to the lower vessel or storage tank not shewn in the drawings: e is the
pipe connecting the cylinder with the separator c and the pipe connecting the
latter with the condenser the said pipe f preferably projecting slightly into
the separator c.
9, are the louvres forming the first set, h, h the louvres forming the second set
and the baffle-plate-separating the two sets. jis the valve in the waste-pipe d for
cutting off communication between the upper and lower vessels.
The action of the apparatus is as follows:-The exhaust steam passes from the
cylinder a through the pipe e into the grease separator c and comes in contact with
the first set of louvres, set at an angle, which deflect the current of steam upon
the battle-plate thereby causing it to flow upwards, after which it passes
downwards and through the second set of louvres h, h.
A large area for the passage of steam is provided between the plates of the
louvres but the steam coming in contact with these surfaces and with the baffle-
plate deposits its contained or suspended grease and the grease which is carried
over mechanically as spray and the deposited grease, mingled with water, trickles
down to the lowest point of the bottom of the separator and is drawn off through
the pipe d, to the lower vessel which is steam tight so as not to disturb the vacuum
of the condenser. This vessel is emptied when the engine stops or when the
valve; is closed.
are
In the arrangement shewn in Figure 2, is the vertical baffle-plate used in lieu
of the two sets of louvres, the said baffle-plate dividing the separator c into two
nearly equal chambers and 3 but not reaching to the top of the same.
the holes at the lower end of the baffle-plate & for the passage of the grease to the
lowest point of the separator c. The pipe e in this arrangement passes through
the chamber and has a downward bend e in the chamber c. 1 is the sloping
baffle-plate arranged above the outlet pipe f.
The exhaust steam from the cylinder issuing from the bend e' deposits a portion
of its grease in the chamber and then passes upwards over the baffle-plate & and
downwards coming into contact with the sloping battle-plate and finally escapes
to the condenser through the pipe . The grease deposited in the chamber
passes to the waste-piped through the holes k.
In the arrangement shown in Figure 4 the separator is made cylindrical and is
provided with a perforated false bottom m which, together with the louvres and
baffle-plates, is rivetted to end plates so that the whole can be removed from the
cylindrical casing for cleaning or other purposes.
In both the arrangements shewn in Figures 3 and 4 the exhaust steam from
the cylinder enters the separator at the top and a baffle-plate is provided in each
case to divert the steam to the first set of louvres.
In the arrangement sbewu in Figure 5, which is adapted for a stationary
condensing or non-condensing engine, the louvres y, g and h, h are arranged on two
opposite sides of the separator so as to overlap, the louvres h, h being connected
by partitions o, o provided at their lower ends with holes p, p. m is a perforated
bottom below the inlet pipe e.
The exhaust steam enters through the pipe e at the lower end of the separator
and passes upwards between the louvres depositing its grease in its passage on the

page_text: said louvres and on the partitions o, o down which it trickles, passing through the
Jioles Pp and through the perforated bottom m so as to collect in the well
underneath the rame.
The arrows in the several figures indicate the direction in which the steam flows.
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
1 claim is
1. In apparatus for separating grease from the exhaust steam of marine and other
engines the arrangement of louvres and baffle-plates constructed and operating
substantially as and for the purpose hereinbefore described.
2. In grease separating apparatus of the kind hereinbefore described the com-
bination of separating chamber (with or without false bottom) louvres, baffle-
plates and valve substantially as described and illustrated.
3. In grease separating apparatus the arrangement of louvres and partitions
with holes for drawing away collected grease to the well below the false bottom
substantially as described and illustrated in Figure 5 of the accompanying
drawings.
4. In grease separating apparatus the combination of a separator with partition,
downwardly bent pipe and baffle-plate arranged and operating as described and
illustrated in Figure 5 of the accompanying drawings.
5. The manufacture and use of the improved grease separating apparatuses
hereinbefore described and respectively illustrated in Figures 1, 2, 3 and 4 of the
irawings.
Irawings.
Dated the 2nd day of August 1895.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.