Year: 1886

page_text: I ALFRED JULIUS BOULT, residing at 323, High Holborn, London, in the County
of Middlesex, England, Patent Agent, 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 that class of oil feeders commonly called displacement
lubricators wherein the water of condensation is fed into the oil contained in a
reservoir and by its own gravity sinks to the bottom displacing an equal amount
of oil.
Heretofore it has been very difficult to oil uniformly the valves and pistons of
locomotive cylinders, for the reason that the cylinders are subject to many changes
of steam pressure, and these changes being communicated to the oil feeders
through the oil pipes. Hence the oiling is not uniform, either too much or not
enough.
This invention is designed to overcome this difficulty and consists merely of one
casting to avoid leakage and also to cheapen the cost to the purchaser.
In the accompanying drawings, in which similar letters of reference indicate
like parts:
Fig. 1 represents a vertical section through oil feeders.
Fig. 2 horizontal section on line x-x of Fig. 1.
Fig. 3 represents cross section of oil feeder.
Fig. 4 a horizontal section on line x-x of Fig. 3.
Fig. 5 is a detail perspective of the sleeve.
Fig. 6 detail showing front view of sight feed of section Fig. 1.
Q is the oil reservoir, P P plug, R R R water chamber, L L feed valve,
HHH solid part or lip over which the feed water passes in the sight feed,
NNN nuts, ZZ Z water passages, K K glass, D D oil tube, Y Y two way plug

page_text: cock, S S large passage, T T small passage about one-sixteenth of an inch in
diameter, U U oil pipe leading to the valve chest, W W nut, V V V iron to
fasten oil feeder to boiler, B oil passage into the steam equalizing chamber,
0 0 0 0 0 steam equalizing chamber, A A oil and steam passage leading to the
valve chest, J J water draw off valve, M M steam passage, G G G sleeve,
E E steam passage, F F F annular steam passage, I steam passage C steam
passage.
The oil feeders are placed one on each side of the boiler, in the cab, and pipes U
connected with the oil pipes now in use, a one-half inch tee with nipple is screwed
into the top of boiler, the branches of the tee are reduced to three-eighths of an
inch in diameter and each pipe therefrom is connected to pipe M on oil feeders.
The top of oil feeders on each side are about on a level with top of boiler.
The operation of the invention is as follows:
Plug P is removed and reservoir Q is filled with oil or other lubricant. Steam
is let into pipe M the two way plug cock is turned so that the small passage T will
communicate with the steam chamber O O, the feed valve is now set so as to feed
as much water as oil may be required on the valves and pistons which can be
observed through the glass K the water flowing into the oil by its own gravity
and thereby an equal amount of oil is being expelled through tube D into the
steam equalizing chamber, steam coming from the boiler through pipe M and into
sleeve G and out at E into the annular steam passage F and down through steam
passage I and C as indicated by the arrows into the equalizing chamber, meeting
there the oil coming through passage B and mixing with the steam; is forced out
by the steam through passage A and T into the pipe U and upon the valves and
pistons.
The object of the sleeve G is to prevent the water of condensation in pipes M
from passing down into steam passage I and causing the water to flow through
sleeve G into the water chamber R.
The object of the steam equalizing chamber is to have an equal pressure of steam
therein as that contained in the boiler. When the steam is shut off from the
cylinders or engines it cannot disturb the oil feed because the oil and steam
passages A and T are so small, particularly the passage T in the two way plug
cock, that it does not diminish the pressure of steam in the equalizing chamber,
for the reason that the supply is so much greater than the small amount of steam
going out with the oil.
I found by actual experiment that the steam pressure in the boiler when the
engines were working was from ten to twenty per cent greater than the returning
steam pressure in the oil pipes near the oil feeders. Hence I utilize this superior
pressure to blow or force the lubricant against the returning steam pressure in the
oil pipes and thence to the valves and pistons.
Another object is to oil one or more engines from one equalizing chamber and
also that either oil or tallow may be used in cold weather, the object of the large
passage in the two way plug cock is to enable the engineer to blow out any large
pieces of dirt which may find its way into the equalizing chamber by turning the
passage S to communicate with that of the chamber the object of the small passage
is to retain a constant boiler pressure in the equalizing chamber in order to have a
uniform oil feed under all conditions of steain pressure in oil pipes or when the
steam is shut off from the engines in going down grade.
The object of the sight feed with a projection or lip over which the water passes
is to leave a large vacant space to fill with water when the oil is fed out.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, as communicated to
me by my foreign correspondents I declare that what I claim is:
1. The combination in a cylinder oil feeder of a sleeve G with the opening E
and placed in the steam passage I so as to form an annular steam passage IO

page_text: and steam chambers OO and reduced outlet A for the purposes as set forth,
substantially as described.
2. In combination with a cylinder oil feeder a two way plug cock with its
passages T S for the purposes as set forth, substantially as described.
3. The combination in a cylinder oil feeder adapted to feed a steady supply of
oil, the steam passage I and C, steam chamber 0 C and reduced outlet A so
constructed as to retard the outgoing steam and oil, for the purposes as set forth,
substantially as described.