Improvements in the Oiling of Cylinders of Gas or Oil Engines.
Year: 1898

page_text: Date of Application, 29th Apr., 1898-Accepted, 11th June, 1898
COMPLETE SPECIFICATION.
Improvements in the Oiling of Cylinders of Gas or Oil Engines.
I, OSCAR BRÜNLER, of Eilenburg, Germany, do hereby declare the nature of this
invention and in what manner the same is to be performed, to be particularly de-
scribed and ascertained in and by the following statement:-
The object of this, my invention is to afford a uniform and regular oiling of
the inner circumference of the cylinders of gas or oil engines and this object is
attained by providing a conduit within the piston rod and the hollow piston and
by forcing the grease or oil through this conduit and out of openings provided on
the circumference of the piston. In order to keep the grease or oil relatively cool
the said conduit is surrounded by cooling water, being forced through the piston
rod, into the hollow of the piston and thence out again through a channel pro-
vided in the forward part of the piston rod.
In order to make my invention more readily understood I have attached thereto
a sheet of drawing, which shows a sectional view of a piston provided with my
improvements.
a is the piston rod, having the forward extension a¹. A is the hollow piston.
The piston rod is provided with a bore b, beginning at the crosshead junction
and being branched off sideways at its other end to meet the boring or channel c
in the piston A, as is clearly shown in the drawing. In this said bore ba conduit,
consisting of an accordingly bent pipe d, is placed, into which the oil or grease is
introduced under pressure in any known manner. The pipe d is led through a
second channel c¹ in the piston body and through the T shaped ring f, which latter
serves as support for the packing rings k, l. Within the said ring f near the
circumference an annular groove g is provided, extending clear around the whole
piston and being covered by a strip of metal, in which at equal distances a number
of small openings or holes i are provided. The oil or grease being pressed out of
the opening of pipe d into the groove g will now completely fill the latter and
will then be pressed out of the holes i and thereby distribute itself uniformly all
over the circumference of the support ring f and effect a regular and uniform
greasing of the inner cylindrical surface of the cylinder. A continuous current
of cooling water is caused to run through the bores b, c and to fill the hollow in the
piston A, thereby keeping the oil or grease comparatively cool within the conduit.
The cooling water is then allowed to run off through the channel or bore h in the
forward part a¹ of the piston rod.
Having now particularly described and ascertained the nature of my said in-
vention, and in what manner the same is to be performed, I declare that what
I claim is:-
_
1) In combination a piston A, the piston rod a, being provided with a bore b
and the pipe d, being carried through the said bored piston rod a and the piston to
the circumference of the piston, as set forth.
2) In combination a piston A, the piston rod a being provided with a bore b,
the support ring f, the closed annular groove g, having a number of equidistant
openings and the pipe d, being carried through the said bored piston rod a,

page_text: through bores c, c₁ of the piston A, through the said support ring and opening
into the said annular groove, as specified.
3) In combination a hollow piston, the piston rod a, having a forward exten-
sion a¹ and being provided with bores b, h, the support ring f, the closed annular
groove 9, having equidistant holes i and the pipe d, carried through the said
bores b, c, through the support ring and opening into the said annular groove, as
and for the purpose specified.