Improvements in or relating to Pistons and in Means for Lubricating the same.
Year: 1899

page_text: Date of Application, 3rd May, 1899
Complete Specification Left, 19th Jan., 1900-Accepted, 24th Feb., 1900
PROVISIONAL SPECIFICATION.
Improvements in or relating to Pistons and in Means for Lubricating
the same.
I, ARTHUR WILLIAM BROUGHTON, General Manager for the Firm of John
Musgrave and Sons Limited," Globe Iron Works, Bolton, in the County of
Lancaster, Engineers, Millwrights, Boiler Makers, and Iron Founders, do hereby
declare the nature of my said invention to be as follows:
This invention refers to improvements in or relating to pistons and in means
for lubricating the same, and is specially designed for efficiently lubricating
the lower or bottom portion of pistons employed in what are well known as
horizontal engines to reduce wear and friction to a minimum in a simple and
effective manner. This I carry into effect by providing both faces of the piston,
.e., both the piston block and cover, with openings to admit steam pressure
under piston to relieve the weight of same, which openings may be charged
with oil or lubricant by means of pipes or tubes leading from a lubricator or
The said
lubricators disposed on the outside of the cylinder cover or covers.
pipe or pipes are of such a length so as to project into openings in the piston
block and cover into which oil or lubricant is admitted when the piston has
completed its stroke at each end of the cylinder. The aforesaid openings are
coupled internally by a channel along which the oil or lubricant flows by a
groove or grooves cut on face of piston block or cover, from whence the oil or
lubricant flows through apertures to the lower surface of the horizontal cylinder,
thereby ensuring of the bearing portion of the piston being thoroughly lubricated;
the oil or lubricant being given out or supplied to the lower surface of the
cylinder when the piston is making a backward stroke, by which the same will
be sufficiently lubricated and in condition for the next advancing stroke of the
piston, the operation being repeated continuously from each end of the cylinder
as long as oil or lubricant is supplied. This invention may also be used in
case of the piston being fitted with anti-friction metal shoes, in which case
the openings will pass through the anti-friction metal. Also grooves may be
formed round the piston so that the oil or lubricant may circulate round the
same.
635
1000
EDMUND CHADWICK,
Agent.
COMPLETE SPECIFICATION.
Improvements in or relating to Pistons and in Means for Lubricating
the same.
I, ARTHUR WILLIAM BROUGHTON, General Manager for the Firm of John
Musgrave and Sons Limited," Globe Iron Works, Bolton, in the County of
Lancaster, Engineers, Millwrights, Boiler Makers, and Iron Founders, do hereby
017

page_text: declare the nature of my said invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following state-
ment:-
This invention refers to improvements in or relating to pistons and in means
for lubricating the same, and is specially designed for efficiently lubricating
the lower or bottom portion of pistons employed in what are well known as
horizontal engines to reduce wear and friction to a minimum in a simple and
effective manner. This I carry into effect by providing both faces of the piston,
i.c., both the piston. block and cover, with openings to admit steam pressure
under piston to relieve the weight of same, which openings may be charged
with oil or lubricant by means of pipes or tubes leading from a lubricator or
lubricators disposed on the outside of the cylinder cover or covers. The said
pipe or pipes are of such a length so as to project into openings in the piston
block and cover into which oil or lubricant is admitted when the piston has
completed its stroke at each end of the cylinder. The aforesaid openings are
coupled internally by a channel along which the oil or lubricant flows by a
groove or grooves cut on face of piston block or cover, from whence the oil or
lubricant flows through apertures to the lower surface of the horizontal cylinder,
thereby ensuring of the bearing portion of the piston being thoroughly lubricated;
the oil or lubricant being given out or supplied to the lower surface of the
cylinder when the piston is making a backward stroke, by which the same will
be sufficiently lubricated and in condition for the next advancing stroke of the
piston, the operation being repeated continuously from each end of the cylinder
as long as oil or lubricant is supplied. This invention may also be used in
case of the piston being fitted with anti-friction metal shoes, in which case
the openings will pass through the anti-friction metal. Also grooves may be
formed round the piston so the oil or lubricant may circulate round the same.
DESCRIPTION OF DRAWINGS.
Fig. 1 is a front elevation of a piston with my improvements applied for
lubricating the same. Fig. 2 a longitudinal sectional elevation of one end of a
horizontal cylinder fitted with cylinder cover, piston, and piston rod with my
improvements for lubricating the same. Fig. 3 an outside view of cylinder
cover showing my improvements applied, and Fig. 4 a part side elevation of a
piston fitted with anti-friction metal shoes with my improvements for lubricating
the same.
cover;
4
A represents a portion of one end of the cylinder of what are well known as
horizontal engines; B cylinder cover; C bolts for securing cylinder cover to
cylinder 1 stuffing box: E gland; G piston rod; H piston block; I piston
J piston rings, and K nuts for securing piston block to piston rod.
In all the figures the same letters are employed to indicate corresponding
parts.
The faces of the piston, i.e., the piston block H and piston cover I are
provided with the openings L to admit of steam pressure under piston to relieve
the weight of same by which strain on the piston rod G and the wearing of
eylinder bottom and piston bottom will be considerably reduced. The openings L4
are also for the purpose of admitting the ends of the pipes or tubes M for con-
veying oil or lubricant supplied thereto by means of the pipes 0 charged from
the pipe P on one end of which is disposed the lubricator R. The pipes O are
provided with the flanges V and are secured to the flanges X attached to the
pipes M, both the said flanges V and X being secured to the outer face of the 5
cylinder cover B by the set screws Z. If desired the other end of the pipe-P
may be provided with the lubricator R' as shown in dotted lines in Fig. 3 to
ensure of a larger quantity of oil or lubricant being more evenly distributed. The
pipes or tubes Mare of such a length so as to project into the openings L in
the piston block H and piston cover I as shown in Fig. 2, into which openings

page_text: oil or lubricant is admitted when the piston has completed its stroke at each
end of the cylinder A. The openings L are coupled internally by the channel N
along which the oil or lubricant flows by the groove $ cut on the circumferential
face of the piston block H and the cover I, from whence the oil or lubricant
flows through the apertures T to the lower surface of the horizontal cylinder A,
thereby ensuring of the bearing portion of the piston block H and piston cover I
being thoroughly lubricated; the oil or lubricant received into the openings L,
channel N, and groove S being given out or supplied to the lower surface of the
horizontal cylinder A when the piston is making a backward stroke, by which
the same will be sufficiently lubricated and in condition for the next advancing
stroke of the piston, the operation being repeated continuously from each end
of the cylinder as long as oil or lubricant is supplied from the lubricator or
fubricators R and R. The groove $ cut on the circumferential face of the
piston block H and cover I may be formed entirely round the same as shown
by which the upper side is charged with oil or lubricant from the usual lubricator
disposed on the upper side of the horizontal cylinder A, thus lubricating the
portion of the piston above the level of oil or lubricant in the lubricator or
Jubricators R and R. This invention is also equally applicable to pistons
fitted with anti-friction metal shoes Was shown in Fig. 4, in which case the
said shoes are provided with the openings L' connected with the groove $ on
the circumferential face of the piston block H and piston cover 1. The aper-
tures T above the line A' B are filled with soft metal so that in case the
piston wears down, the latter may be turned over in which case the filled up
apertures T above the line A¹ B₁ are opened out and those-by the changed
position of the piston-which are placed above the line A¹ B are filled or closed
by soft metal. I would have it understood that I do not confine myself to to the
number of pipes M shown in the plans as the same may be increased or decreased
in quantity as desired according to the diameter and requirements of the piston.
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:-
1. The general arrangement construction and combination of parts composing
my improvements in or relating to pistons and in means for lubricating the
same, consisting of the piston block H and piston cover I with the openings L
to admit steam pressure under the piston to relieve the weight of same, which
openings also allow of being charged or supplied with oil or lubricant at the end
of each stroke by means of the pipes or tubes M and the pipes O and P, charged
or supplied with oil or lubricant from one or both ends of the pipe P from the
lubricator or lubricators R and R' disposed on the outside of the cylinder cover
or covers B; the openings L being connected partly or wholly round the cir-
cumference of the piston block H and piston cover I by means of the channels N,
grooves S, and apertures T, the whole being applied, arranged, and operating
substantially as described and as illustrated in Figs. 1 to 3 in the annexed
drawings.
2. In combination with the piston block H and piston cover I provided with
the openings L, the use of the anti-friction metal shoes W with the openings L'
connected circumferentially by means of the grooves S, applied, arranged, and
operating substantially as described and as illustrated in Fig. 4 in the annexed
drawings.
Dated the 18th day of January 1900.
EDMUND CHADWICK,
Agent.