IMPROVEMENTS IN LUBRICATING THE PISTONS AND CYLINDERS OF MOTIVE POWER ENGINES
Year: 1884

page_text: We WALTER MARTIN MUSGRAVE, of the Globe Iron Works, Bolton, Lancashire
Engineer, and JOHN PRESTWICH, of Pandora Mills, Farnworth, near Bolton,
aforesaid, Manufacturer do hereby declare the nature of said Invention for
IMPROVEMENTS IN LUBRICATING THE PISTONS AND CYLINDERS OF MOTIVE POWER
ENGINES to be as follows:-
The object of our Invention is to lubricate more effectually the pistons and
cylinders of motive power engines.
In applying our Invention to a horizontal steam engine we cut one or more
grooves in the inner surface of the cylinder, these grooves extend from the bottom
of the cylinder upward leaving a space at the top of the cylinder blank or uncut;
the grooves may extend entirely round the inner surface of the cylinder if desired
and any number of such grooves may be employed.
In order to get the oil or other lubricant into the grooves we prefer to drill holes
through the cylinder to meet the grooves at the upper part of the cylinder;
lubricators are screwed into these boles and the oil passes from them down the
grooves into the lower part of the cylinder.
In order to clean or clear the grooves we may connect small pipes controlled by
valves to the grooves near the bottom of the cylinder; these small pipes form an
outlet for the steam and when it is desired to clean the grooves we open the
valves, and allow steam from the cylinder to pass through the pipes and scour the
grooves.
Each valve is opened automatically preferably at the moment when the piston is
passing over the pipe and groove which it controls.
In order to prevent the oil being forced out of the ends of the cylinder through
the exhaust passages, we drill holes near each end of the interior of the cylinder
and partly through it: the piston pushes the oil into these holes and on its return
stroke it carries the oil back by capillary attraction and so ensures thorough
lubrication of the cylinder.
Either the grooves or the holes may be used alone or in combination.

page_text: COMPLETE SPECIFICATION.
We WALTER MARTIN MUSGRAVE, of the Globe Iron Works, Bolton, Lancashire,
Engineer and JOHN PRESTWICH, of Pandora Mills, Farnworth, near Bolton,
aforesaid, Manufacturer, do hereby declare the nature of said Invention for
IMPROVEMENTS IN LUBRICATING THE PISTONS AND CYLINDERS OF MOTIVE POWER
ENGINES, 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 our Invention is to lubricate more effectually the pistons and
cylinders of motive power engines.
In applying our Invention to a horizontal steam engine we cut one or more
grooves in the inner surface of the cylinder; these grooves extend from the bottom
of the cylinder upward leaving a space at the top of the cylinder blank or uncut;
the grooves may extend entirely round the inner surface of the cylinder if desired
and any number of such grooves may be employed.
In order to get the oil or other lubricant into the grooves we prefer to drill holes
through the cylinder to meet the grooves at the upper part of the cylinder;
lubricators are screwed into these holes and the oil passes from them down the
grooves into.the lower part of the cylinder.
In order to clean or clear the grooves we may connect small pipes controlled by
valves to the grooves near the bottom of the cylinder; these small pipes form an
outlet for the steam and when it is desired to clean the grooves we open the
valves and allow steam from the cylinder to pass through the pipes and scour the
grooves.
Ench valve is or may be opened automatically, preferably at the moment, when
the piston is passing over the pipe and groove which it controls.
In order to prevent the oil being forced out of the ends of the cylinder through
the exhaust passages we drill holes near each end of the interior of the cylinder
and partly through it; the piston pushes the oil into these holes and on its return
stroke it carries the oil back by capillary attraction and so ensures thorough
lubrication of the cylinder.
:
Either the grooves or the holes may be used alone or in combination.
And in order, that our Invention may be fully understood and readily carried.
into effect we will describe the accompanying Sheet of Drawings, reference being
had to the figures and letters marked thereon.
Figure 1 is a transverse section and Fig. 2 a longitudinal section of the cylinder
of a horizontal ateam or other motive power engine provided with grooves and
holes for lubricating purposes according to our Invention and Figs. 3 and 4 are
similar views of a horizontal cylinder provided with holes or recesses only.
In Figs. 1 and 2. a is tho horizontal cylinder in which are cut the grooves b.
which in this case are three in number extending upward from the bottom leaving
an uncut space at the top of the cylinder; a are the holes drilled through the
cylinder a to meet one of the grooves b and into these holes c are screwed the

page_text: lubricators d from which the oil or other lubricant passes down the grooves b into
the lower part of the cylinder; e e e are three passages each of which is connected
to a groove b and controlled by a valve ƒ by opening which steam rushes through
the passage e and scours out the groove b. The valves ƒ may be connected to the
piston or other convenient moving part in such manner that each valve is opened
automatically preferably at the moment when the piston is passing over the
passage e and groove b which it controls; g are boles or recesses which we drill in
the interior of the cylinder near the exhaust passage h; these recesses g extend
only partly through the cylinder and serve to hold the lubricant and prevent it
being pushed into the exhaust passage.h by the piston.
In Figs. 3 and 4.-The cylinder a is shown provided only with holes or recesses g.
No grooves b are used in this instance, but the oil or other lubricant passes from
the lubricators d into the interior of the cylinder a at points above the level of the
recesses g.
Having now particularly described and ascertained the nature of our said
Invention and in what manner the same is to be performed we declare that what
we claim is
1. In the cylinder of a motive power engine, the use and application of grooves
and holes or recesses used either alone separately, or in combination together for
the purpose of ensuring the thorough and effective lubrication of the piston and
cylinder, substantially in the manner herein set forth.
2. In the cylinder of a motive power engine, the combination with the grooves b,
of the passages e controlled by valves f, substantially in the manner and for the
purposes herein set forth.
H. B. BARLOW,
Agent for Applicants,
4, Mansfield Chambers,
17, St. Ann's Square, Manchester.