Year: 1887

page_text: Date of Application, 1st Apr., 1887
Complete Left, 2nd Jan., 1888
Complete Accepted, 17th Feb., 1888
WILLIAM FRASER Engineer 49 Oxford Road Finsbury Park London, N. do hereby
declare the nature of this invention to be as follows:-
The cylinder or outside shell of this Lubricator is screwed at each end the top &
bottom covers being screwed also to fit same. The cylinder is bored two different
sizes. The oil chamber being smaller than the steam or water chamber. The
plunger is also two different sizes one end to fit the oil & the other the water
chamber. The latter having the largest area will necessarily have the greatest force
pressure which therefore ensures beyond doubt the contents of the oil chamber being
sent to its proper destination. I will now proceed to give a fuller description.
Cylinder A. can be cast in any kind of suitable material each end of which is screwed
to suit the covers B & C. respectively. A is bored out to fit the plunger D. The water
chamber being about " or thereby larger in diameter than the oil chamber D. being
made a tight working fit to suit both chambers D. is practically a tube with both ends
closed up with small hole E. bored that any water that may escape past the plunger D.
from the water chamber will find its way into the inside of plunger D. The small
cock F. can be left open or closed at will. F. if open, prevents back pressure of
water air or steam from generating in space G. which would act on the bottom end or
shoulder of D. if confined & would thereby make the pressure in both cylinders
alike. A two way cock is screwed into H. in cover B. when D. has travelled from
bottom to top of cylinder A. the two way cock answers the double purpose of shutting
off the back pressure on the oil chamber & also serves to admit the oil also (by
means of an oil cup) to recharge the oil chamber again, a two way cock is also screwed
into T. in cover C. which also serves the purpose of shutting off the pressure from the
water chamber & at the same time allowing the condensed water to escape.
When the pressure is thus cut off from both chambers & the atmospheric pressure
admitted at both ends then the plunger D. by its own weight falls to the bottom of
the cylinder A. The oil chamber is then filled by pouring the necessary quantity into
the oil cup, which in turn conveys it to the oil chambers. The bottom & top cocks
are then reversed the latter being fitted with a sight feed immediately above the
barrel of the cock can be adjusted to 1 or 100 drops per minute.

page_text: Claims. First, to have one cylinder bored two different sizes with screwed ends or holes
bored & screwed for bolts or studs or the ends to be either brazed or soft soldered on.
Second, to have the cylinder ends with screwed or drilled holes for bolts or studs
or to have them brazed or soft soldered on to cylinder.
Third, to have a two way cock at the bottom end.
Fourth, to have a two way cock with oil cup & sight feed at top end.
Fifth, to have a plunger two different sizes either solid or hollow, with or without
a communication from outside to inside of same.
Sixth, to have air cock to take off the back pressure from the plunger.
Seventh, to have the top & bottom cocks connected by means of rod or otherwise
or to have same to be wrought separately..

page_text: Lubricator.
I, WILLIAM FRASER of 49 Oxford Road, Finsbury Park London, N., Engineer, do
hereby declare the nature of this invention and in what manner the same is to he
performed, to be particularly described and ascertained in and by the following
statement :-
My invention has for its object principally, to simplify the construction, and to
render more convenient and efficient when in use, lubricators for feeding cylinders,
boilers, and the like, when under pressure with lubricants.
I take a cylinder, closed at top and bottom, and with its inside bored to two
diameters, wherein a plunger of two like diameters, works. The lower end of the
plunger which is extended in area, works within the larger part of the cylinder, and
by such increased area, an unequal, or varying pressure of steam is thereby produced.
The top of the cylinder has an outlet crossed by the coned inner end of a valve
stem, and which outlet passes vertically upwards, into a sight feed, and from thence to
a delivery pipe, and from which delivery pipe, a steam pipe is connected, for directing
the steam pressure to the underside of the plunger, which, is of an extended area.
Steam is regulated through the steam pipe, by a two-way cock, whilst air, and
condensed water or steam, is allowed to escape from the enlarged part of the cylinder,
on the rising of the plunger, by a depending pipe, with a cock at its lower end.
The plunger carries a depending hollow rod, with a hole near the underside of the
plunger, wherethrough condensed water passes, on a screw cap at its lower end being
removed.
The hollow rod as aforesaid, is graduated with a scale, for indicating the position of
the plunger within its cylinder.
The lubricator and parts carried by it, is or are supported upon a bracket.
Figure 1 represents partly in longitudinal vertical section, and partly in elevation,
a lubricator constructed and arranged, according to my invention. The plunger is
shown at the bottom of its cylinder, and with the supply regulating valve, closed.
Figure 2 represents the same, with the plunger partially raised, and the supply
regulating valve, open.
Figure 3 represents a top side view of the lubricator, thus exhibiting the feed cup,
wherethrough oil is fed to the upper part of the cylinder, or on the top side of the
plunger.
Figure 4 is an underside view of the said lubricator.
The same letters of reference indicate corresponding parts in the several figures of
the drawing.
a, a² is the cylinder or outside shell of the lubricator, having two inside diameters,
and closed at top and bottom, by end caps, or covers a³, at; and working within the
inside of which said cylinder, is a plunger 6. The upper end b, which is of smaller
diameter, accurately fits and works within the cylinder a, which is the oil chamber,
whilst that part 6, of the said plunger, which is of larger diameter, works and fits

page_text: accurately within the lower and enlarged part of the cylinder, which constitutes the
water and steam chamber.
Thus, the cylinder is bored to two diameters, the oil chamber being smaller than
the steam or water space; and further, the plunger which works within the inside
of the cylinder, is also formed of two diameters, fitting and working within the oil
chamber, and the water or steam chamber respectively; the latter, having the larger
area, must necessarily exercise the greatest force pressure, and convey the oil from
the oil container, to its proper destination.
The top cover a³ of the cylinder, has an upwardly directed outlet e², passing through
a connection c, wherein a supply regulating valve d, transversely passes, and with its
coned inner end, crossing the passage c²; so that on the screwing in or out of the
valve d, by its milled head, the coned front end, is made to close, fully open, or
partially open, the passage, and so thereby regulate the upward flow of oil to a glazed
oil feed e, disposed between an upper connection, and a lower connection G whose
middle is pierced with an upwardly directed outlet e³.
The upper connection, has a passage, through its middle, and which said
passage, leads into a delivery pipe g, connected with a steam pipe, wherethrough
steam in its passage to a cylinder or the like, passes.
h is a steam pipe, directed from the delivery pipe y, and connected at its lower end,
to the hoitom of the cylinder, under the extended area of the plunger, and through
which said pipe, steam is supplied to the extended underside of the said plunger.
h² is a two way cock, for regulating the admission, and cutting off steam, while the
upper end of this said steam pipe, extends upwardly into the middle of the delivery
pipe g so that oil forced from the cylinder, is prevented from flowing into the steam
pipe h.
is a depending or syphon pipe, with a cock at its lower end, and with its other
end, in connection with the upper part a² of the cylinder a, a, and through which
pipe, air and condensed water, passes.
The plunger b, 2, has a depending bollow rod 3, with a hole 6 near its connection
with the plunger, and through which said hole, condensed water from the lower part
of the cylinder, passes outwardly, and escapes through the lower end of the said
hollow stem, on the screw cap being removed.
The rod 63 which is graduated with a scale, so as to indicate the consumption of oil,
or the position of the plunger within its cylinder, works through a stuffing box 66,
carried at the lower end of a connection 7, supported upon a bracket or framing 68.
The cock of the pipe i, is preferably left open, so as to prevent back pressure of
condensed water and air, or from steam generating in space, which would exert
pressure, upon the top side or shoulder of the extended lower part of the plunger.
When the plunger has travelled from bottom to top of its cylinder, the two way
cock answers the double purpose of both shutting off the back pressure, on the oil
chamber, and for admitting the oil thereto, through a cup, which is closed by a cap.
On steam pressure being cut off from both chambers of the cylinder, and
atmospheric air admitted at both ends, then the plunger will fall to its normal
position, by its own weight, which allows the oil chamber to be then filled, by pouring
through the cup j; this done, the valve and cocks are then turned, and with the
former adjusted, so as to admit of the passage of 1 or 100 drops of oil per minute,
into the sight feed, and from thence, conveyed to the delivery pipe.
Instead of steam being supplied to the underside of the plunger, through the steam
pipe h, connected with the delivery pipe g, it may be supplied directly, through an
independent steam pipe.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed, I declare that what I claim is-
First. In a lubricator cylinder a, a², and plunger b, 2, as described and illustrated;
that is to say, making the cylinder of two internal diameters, wherein a plunger of
two like diameters, works, substantially as, and for the purpose, as herein described
and set forth..

page_text: Secondly. The combination with a lubricator cylinder and plunger, of the kind
herein described and set forth, of a steam pipe h, and two way cock h².
Thirdly. In combination with the upper cover a³, of a cylinder a, a³ of a connection c,
passage, valve d, sight feed e, connection and passage f, f, and delivery pipe y,
substantially as set forth.
Fourthly. Providing the lower, and enlarged end of the cylinder of a lubricator,
with an pipe i,, for taking away back pressure, substantially as described and set
forth.
Fifthly. Providing the underside or bottom of lubricator plungers, with a hollow
pipe 63, having a screw cap 6, at its lower end and a hole 6 at its upper end for the
purpose substantially as described and set forth.
Sixthly. Graduating, or providing the hollow rod 63, of the plunger 6, 62, with a
scale, for determining the position of the plunger within its cylinder, or the amount of
oil in the oil chamber, substantially as set forth.
Lastly. A lubricator, consisting essentially of a cylinder, bored to two diameters,
a plunger of two diameters, inlet and outlet valves, and steam and oil passages;
condensed water and air outlets, and graduated plunger rod; and which said parts are
constructed and arranged, and act in the manner, and for the purpose as described and
set forth.
Dated this Thirtieth day of December 1887.
WILLIAM FRASER.
By Henry Skerrett,
Agent for Applicant.