An Improved Sight Feed Self Acting Lubricator for Lubricating the Cylinders of Marine Engines or other Machinery Automatically.
Year: 1893

page_text: Date of Application, 26th Jan., 1893
Complete Specification Left, 4th May, 1893--Accepted, 15th July, 1893
PROVISIONAL SPECIFICATION.
An Improved Sight Feed Self Acting Lubricator for Lubricating the
Cylinders of Marine Engines or other Machinery Automatically.
JOHN FRAME KITCHING 4 Hart Road West Hartlepool County Durham
Marine Engineer do hereby declare the nature of this invention to be as follows :-
The apparatus consists of two cast iron cylinders (in one casting) having different
diameters, and fitted with covers top and bottom, the top cylinder contains the oil
for lubricating and the lower or larger cylinder steam or water as may be required.
A piston made of brass or other materials works in each cylinder being made steam
tight by spring rings or other material, the pistons are hollow forming a trunk and
are joined by a rod having a lesser diameter than smaller piston. The larger trunk.
is filled with cold water and a copper coil is fitted at the end of a steam pipe within
the trunk for the purpose of condensing steam when admitted to the lower trunk
and which prevents the lubricator from becoming excessively hot. A steam cock
having two "ways at right angles is fitted on the side of the cylinders, in such a
manner that one passage for steam (coming from boiler or other source) is allowed
to enter the space between the two pistons, whilst the other "way" leads through
large cylinder cover into copper coil named and exerts the pressure to drive both
pistons forward, when the pistons are under pressure oil is then forced into the
vessel to be lubricated.
"
When the pistons have travelled full length of stroke, by shutting off steam
below large piston and opening passage between the two areas, the steam acting on
larger area forces pistons down to original position, another valve or cock is fitted
between the two areas, which always remains open when lubricator is feeding, thus
leaving a normal atmospheric pressure within the space named. A pet cock is
opened underneath larger cylinder to allow waste water to discharge upon return
stroke of pistons. On top of small cylinder cover is fitted the tube along which
the oil flows to the part to be lubricated the oil being visible in its movement by
means of a glass tube, the flow of oil being regulated by a valve. After com-
pletion of each stroke the small cylinder has to be refilled with oil, a small cock
allowing this to be readily done.
Dated this 25th day of January 1893.
JOHN FRAME KITCHING.
COMPLETE SPECIFICATION.
An Improved Sight Feed Self Acting Lubricator for Lubricating the
Cylinders of Marine Engines or other Machinery Automatically.
JOHN FRAME KITCHING 4 Hart Road West Hartlepool County Durham
Marine 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 :-
-
The apparatus consists of two cast iron cylinders marked c con plan, having
different diameters and fitted with cast iron covers v top and bottom. Working
inside the cylinders c c' are two pistons p p' made of brass or other metal, which
are kept steam tight and oil tight by means of steel spring rings s s' and by an
additional packing ring R. R' of indian rubber or other elastic material. The
pistons ppl are connected by a trunk T. The space between top of piston p¹ and
inside of cylinder cover ¹ is the oil chamber. To put this oil under pressure steam
from a boiler is allowed to enter along steam pipe S. P. pass through brass

page_text: cocks M and E then through cylinder cover V and into a copper coil K, the space
surrounding the coil within the trunk T is filled with cold water, which is for the
purpose of keeping the cylinders cool, thus ensuring the whole apparatus working
much more smoothly than when in a heated condition, the steam pressure acting
upon the larger area of piston P exerts the necessary pressure to force a steady flow
of oil from cylinder c. The oil in its passage to the cylinder or object to be
lubricated passes through cylinder cover v' and valve R, the amount of discharge
is regulated by the brass valve R, the oil after passing through R ascends the glass
tube S F and is then visible to an observer.
After the pistons p p¹ have made their stroke the return stroke is made either by
allowing steam to pass through the two way cock M. which is placed on side of
cylinder c in such a position as to admit steam between the two pistons, and the
steam pressure acting on larger area P drives the pistons down, or the pistons may
be pressed down by hand, by means of the hand-wheel and screw spindle F, the
lower part of the spindle is formed as a conical valve c c. in order to prevent oil
working past screw threads wher. the oil is under pressure. To refill cylinder c'
the oil is poured through spindle Fafter which the screw valve named is tightened;
or the small screw stud O may be unscrewed and oil poured through the hole in the
cover p¹.
During the upstroke or feeding stroke, the space between the pistons p p is kept:
free from pressure-other than the atmospheric-by means of the cock A, which is
attached to the top part of cylinder c and which leading to the waste pipe W. P.
is left open. During the down stroke the cocks A and E are closed, and the
cock B is open which allows excess of water accumulated during up stroke to find
an exit through waste pipe W. P.
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 ;-
(I) That by my method of lubricating there are no glands to pack, thus avoiding
the great amount of friction which glands cause when tightened up to prevent a
leakages, by my method the greater the pressure upon the piston packings the
tighter they become, the friction being very small.
(II) By means of a hollow piston or trunk I am enabled to insert a copper coil
which forms a condenser and keeps the whole apparatus cool.
(III) There is no waste or breaking up of the oil in the lubricator, and the feed a
can be regulated minutely, whilst the oil chamber can be refilled very readily.
(IV) Wear and tear is reduced to a minimum there being no ratchets, worms
and worm wheels, or geared wheels to get out of order.
(V) Steam is never admitted into the oil chamber to push pistons back, this may
be done by the steam pressure acting between the two pistons, or by pushing down
by hand screw pressure through the filling cup on top cylinder cover.
(VI) The lubricator is very compact and requires no special attention or skill
and cannot be damaged by carelessness of attendants, being extremely simple both
in its action and working parts generally.
Dated this 2nd May 1893
JOHN FRAME KITCHING.