Improvements in Sight Feed Lubricators for Steam Engines.
Year: 1898

page_text: Improvements in Sight Feed Lubricators for Steam Engines.
I, WILLIAM HENRY GREATOREX, of 11, Forthbridge Road, Clapham Common,
in the County of Surrey, Brass-finisher, do hereby declare the nature of this
invention to be as follows:-
The object of my invention is to improve the construction of light feed
lubricators.
In carrying out my said invention I provide a vessel of suitable construction
to contain the lubricant, having a flange or screw-connection for the purpose of
fixing the same in the desired position.
A cylindrical column forming part of the condenser springs from the centre
of the oil vessel in a vertical direction to support and be in communication with
an oblong condenser at a suitable distance from the said oil vessel.
The abovementioned oblong condenser is walled off to form two seperate
chambers.
One of these said chambers communicates with the vertical condenser.
The said vertical condenser is carried down nearly to reach the bottom of the
oil vessel. To which a valve is fitted to shut off the condensed steam or water from
the oil vessel when desirable.
The second chamber of the beforementioned oblong condenser is bored out in a
vertical direction and a screwed plug fitted to the top of the chamber to allow
the entry or removal of the sight feed glass, the said glass passes through the
vertical bore to the top of the oil vessel.
I screw a jet in the top of the oil vessel concentric with the sight feed glass,
through which the lubricant passes from the oil vessel into the chamber.
The passage for the oil delivery is controlled by a regulating valve. The con-
nection for the sight feed glass at its junction with the top of the oil vessel is
made by the ordinary stuffing box and gland nut with suitable packing. But
the connection of the said sight feed glass with the condenser is made in the
following manner-
The bore through which the sight feed glass passes into the chamber keeps the
said glass in a vertical position, an india rubber ring or suitable packing is slipped
over the glass, from the inside of the condensing chamber and is pressed into a
recess cut round the bore abovementioned in the following manner.
A bell shaped gland whose bore allows the glass to freely enter, and whose out-
side diameter freely fits the recess containing the packing has a spindle springing
from the crown of the said bell. The nut screwed into the top of the condensing
chamber to allow the fixing or removal of the sight feed glass is bored to receive
the said spindle sufficiently far to hold it in position the remainder of the bore
is tapped to engage a set bolt actuated from the top of the nut before mentioned
to press down the gland into the recess containing the packing and so keep the
sight feed glass steam tight.
To prevent the escape of steam round the said set bolt-I insert a lead plug or

page_text: other suitable materiel in the bore of the nut between the set bolt and spindle of
the gland.
I also perforate the bell of the gland to allow the oil to pass from the nozzle
hereinbefore mentioned into the condensing chamber.
I preferably take the service of the steam from the tail end of the oblong
condenser. The said steam runs direct through a clothed passage as live steam
to the chamber into which the oil passes from the oil vessel.
The passage through which the live steam and oil passes from the condensing
chamber into the conduit pipe is controlled by a valve, The said steain passage is
pierced at a point that will allow a jet of steam to flow into the condensing chamber
herein before mentioned running down to the bottom of the oil vessel. A waste
valve is provided at or near the bottom of the oil vessel to draw off the condensed
water or steam when desirable.
The oil vessel is filled from an opening at the top and is controlled by a spindle
engaging with a thread cut in a vertical direction through the thickness of the
oblong condenser.
A cover to prevent the accumulation of dirt in the said opening and so passing
into the oil vessel, is attached to the end of the said spindle and by means of
a spiral spring being brought into compression when the spindle is screwed down
to close the filler the said cover is pressed down tightly over the opening.
The action of the apparatus is as follows-
The condenser being charged with water and the oil vessel being charged with
oil the filler opening is securely closed by the vertical spindle.
The steam service valve or cock.
The valve for stopping the live steam passage to the conduit pipe.
The regulating valve, also the valve for shutting off the condenser from the
oil vessel are all opened.
The condensed steam or water will then pass down the vertical condenser to
the bottom of the oil vessel.
The oil thus displaced by the superior specific gravity of the water rises to the
top of the oil vessel and thence through the delivery nozzle passes through the
water in the sight feed glass drop by drop the number of drops per minute being
determined by the adjustment of the regulating valva
The oil then floats on the surface of the water in the condenser and is carried
by the live steam in a high state of temperature to assimilate freely with the steam
ir the part to be lubricated.
Dated this Oth day of T... 1000
COMPLETE SPECIFICATION.
Improvements in Sight Feed Lubricators for Steam Engines.
I, WILLIAM HENRY GREATOREX, of 11, Forthbridge Road, Clapham Common,
in the County of Surrey, Brass-finisher, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement:-
:-
The object of my invention is to improve the construction of sight feed
lubricators.
The manner of carrying out my said invention is described with reference to
the accompanying drawings.
In Figures 1, 2, 3, and 4, similar letters refer to similar parts in each figure.
S is a vessel for containing the lubricant-and attached at any convenient point

page_text: of said vessel is a flange-or as shewn in Fig. 1, a screw shank and check nut e f
for fixing the device in the desired position-the vessel S is filled with the lubricant
at the opening d the said opening is sealed by the spindle valve A said spindle
engages with the thread A cut in the bracket of the oblong condenser-the
shield B attached to the spindle A is to cover the opening d at the top of the oil
vessel S and so prevent foreign matter entering said vessel-the shield Bis
pressed firmly on the top of the vessel $ by compression of the spring C when
the spindle A is screwed down on its seat. The oblong condenser Fig. 3 is walled
off to form two seperate chambers h¹ the chamber h by means of the column
shewn in Figures 12 and the internal cone shewn in Fig. 4 is carried down to
nearly the bottom of the vessel $ the valve U is to control the service of the
condensed steam or water into said vessel-the waste valve T is for draining the
oil vessel $ when desirable. The chamber is bored in a vertical direction
at VFig. 2 to allow the entry or removal of the sight feed glass W the opening
at 6 is fitted with a stopper b the sight feed glass W is made steam tight round
the opening in the following manner-the said opening is enlarged in the
chamber at V to admit an indiarubber ring or suitable packing. The thimble
gland Fig. 2 is bored to freely admit the sight feed glass W and the outside
diameter of said gland is turned down to freely enter the channel V the shank on
the crown of the gland is turned to enter the bore of the stopper so that
when the set screw m working in stopper bis screwed down on the shank of the
gland the said gland presses the packing in the channel V tightly round the
sight feed glass W so making a steam tight joint-I also insert a plug n Fig. 2
of lead or other suitable material between the set screw m and shank of gland O
to prevent the escape of steam through the bore of the stopper b.
22.
The junction of sight feed glass at top of oil vessel S is made by the stuffing
box O¹ in the ordinary manner-the chamber h¹ communicates with the oil vessel S
by means of the sight feed glass W and the passage R at top of said vessel, the
said passage being controlled by the regulating valve R¹ the nozzle Q concentric
with the sight feel glass W is a diminished continuation of the passage R Fig. 1.
The steam service is admitted at 9 as shewn-but I when desirable connect a
separate condenser springing from the chamber h in a vertical direction-in this case
the steam service is taken at top of said condenser-the said steam travels to the
chamber has live steam through the clothed passage k Fig. 3 the said passage is
pierced at i to allow a jet of steam to enter the chamber h for condensing purposes
the delivery is at the opening the said opening is controlled by the valve J it
will be seen by reference to Figures 3, 4, that the activity of the live steam in
its passage to the chamber h' is not curtailed by the using the controlling valve U.
for the purpose hereinbefore specified. My object in this arrangement is to
remedy a very serious defect-as when the steam is allowed to rush into the oil
vessel uncontrolled the temperature is frequently so great in said vessel that
assimilation of condensed steam and water takes place, when a vitiated admixture
of both passes up the sight feed glass-so misleading as to results-and to a large
extent neutralizing the object of a sight feed lubricator-a gauge glass may if
desirable be fixed to the oil vessel S to shew the quantity of oil and water in said
vessel.
To use the device
Fill the vessel S with lubricant and shut down valve A also close waste
valve T open steam regulating valve U oil regulating valve R¹ and stop valve J
on admission of steam at g or as otherwise specified-it will condense and fill
the sight feed glass W and chamber h¹ up to the opening p condensed steam will
also pass down the chamber hand so into the bottom of the oil vessel S as con-
trolled by the valve U the lubricant compelled by the superior specific gravity
of the condensed steam or water--will rise to the top of the oil vessel and upward
through the passage R and nozzle Q and so appear passing up through the water
in sight-feed glass in so many globules per minute-as determined by the adjust-
ment of regulating valve R₁ the said drops of oil are met in the chamber h¹ by

page_text: the live steam and raised to a high state of temperature and so carried through
the delivery passage p to their destination where they will rapidly assimilate
with the steam.
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;-
1. The device for a sight feed lubricator substantially as described and shewn.
2. The combination of the oil vessel with internal cone and column connected
to the two chambered condenser, and arranged to convey condensed steam-to
bottom of said oil vessel-with method of controlling entry of same-for the purpose
specified substantially as described and shewn.
3. The combination of the oil vessel with the two chambered condenser the
sight glass and device for packing same in interior of chamber also means for
conveying live steam to said chamber for the purpose specified-substantially as
described and shewn.
4. The combination of the oil vessel with the two chambered, condenser the
bracket attached to said condenser for carrying filler stop spindle-with device
attached to said spindle-to cover opening for filler-for the purpose specified-
substantially as described and shewn.
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حيم
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1 1000