Improvements in Metallic Packings of the Pistons of Steam and other Engines, and in Apparatus for Ensuring the Lubrication of Piston and Cylinder.
Year: 1889

page_text: Date of Application, 23rd May, 1889
Complete Specification Left, 22nd Mar., 1890-Accepted, 26th Apr., 1390
PROVISIONAL SPECIFICATION.
Improvements in Metallic Packings of the Pistons of Steam and
other Engines, and in Apparatus for Ensuring the Lubrication of
Piston and Cylinder.
I, JOHN DRURY of Railway Terrace, Rastrick, Brighouse, in the County of York,
Mechanic, do hereby declare the nature of this invention to be as follows:-
This invention relates to further improvements connected with the pistons of steam
and other engines, and apparatus for ensuring lubrication thereof, for which Letters
Patent were granted to me 24th March 1886 No. 4107, and consists in an improve-
ment in the metallic rings and in the means of expanding the same.
According to this my invention I bevel off or angle the interior of each of the split
rings and thereby provide a suitable space between the pair of rings the bevelled
surfaces of the two rings enclose the spiral spring between them and which spring is
made considerably larger than the internal surface of the two rings the said spring
being jointed at its ends when coiled so as to form a ring previous to being placed
within the cavity formed by the two rings as described and the ends of the spring are
secured in position by means of a jointing piece consisting of a length of metal turned
to the interior diameter of the spring and having midway its length a narrow flange
or collar so that when the piece is bent to the radius of the spring when in position it.
receives on each side of its collar the opposite ends of the coiled spring which thus
forms a complete circular coil ready for insertion and compression within the space
formed by the bevelling or angling off of the two inner surfaces of the split rings as
described.
When the piston is to be applied to horizontal engines. I effect the lubrication of
the piston and cylinder by means of a tube which is passed through a stuffing box in
the cover of the cylinder and is connected with the piston there being an orifice and a
groove encircling part of the radius of the piston whereby the lubrication is supplied
to the upper portion of the piston and cylinder, the other end of the tube carries a
" lubricator or oil feed box.
"
The construction of the combined rings and angular coiled spring afford great
facilities for the removal and replacement of the split rings of the cylinder for any
purpose.
WALTER BRIERLEY,
Town Hall Buildings, Halifax, Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Metallic Packings of the Pistons of Steam and
other Engines, and in Apparatus for Ensuring the Lubrication of
Piston and Cylinder.
I, JOHN DRURY, of Railway Terrace, Rastrick, Brighouse, in the County of York,
Mechanic, 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 further improvements connected with the pistons of steam,
and other engines, and apparatus for ensuring lubrication thereof, for which Letters
Patent were granted to me the 24th day of March 1886 No. 4107 and consists
in an improvement in the metallic rings, and in the means of lubricating the same.
According to this my invention I provide a suitable space between the pair of
packing rings for enclosing and embracing the spiral spring, for expanding the same,
rn 077

page_text: such spring being made considerably larger than the interior of the two packing
rings, and is jointed at its ends when coiled so as to form a ring, previous to being
placed between the two packing rings, the ends of the spring being secured in position
by means of a jointing piece consisting of a short length of metal turned to the
interior diameter of the spring, and having midway its length a narrow flange or
collar, so that when the piece is bent to the radius of the spring when in position, it
receives on each side of its collar or flange the opposite ends of the coiled spring
which thus forms a complete circular coil ready for insertion, and compression
within the space formed by the bevelling, or angling off of the two inner surfaces of
the split packing rings.
When the piston is applied to horizontal engines, I effect the lubrication of the
same, and of the interior of the cylinder by means of a tube, which is passed through
a stuffing box in the cover of the cylinder, and is connected with the piston, there
being an orifice, and a groove encircling part of the radius of the piston whereby the
lubricant is supplied from a containing tube, to the upper portion of the piston, and
cylinder, the end of the containing tube carries a "Jubricator or oil feed box.
When the piston is applied to a vertical engine, the oil groove extends nearly the
whole radius of the piston, and the "lubricator" or oil feed box is on the top side of
the containing tube.
Such being the nature and object of my said invention, the following is a complete
description of same, reference being made to the accompanying drawings, forming a
part of this specification in which :-
Fig. 1 is a sectional elevation of a part of a steam cylinder, to the piston of which,
and on the end of the cylinder, is attached my improved device for lubricating the
piston, and interior of the cylinder.
Fig. 2 is a plan view of part of the spiral spring for expanding the metallic piston
packing ring, and shewing my improved means of attaching the two ends of such spring.
Fig. 3 is a sectional elevation of metallic packing rings, and expanding spring
with its connection.
Fig. 4 is a front view of piston, and lubricating tube as applied to a horizontal
.cylinder.
The several Figs. on sheet 2 are details drawn to more clearly illustrate the con-
struction of my improved lubricator.
According to this my invention, and referring now to the improved apparatus for
ensuring the lubrication of the piston.
.
Fixed by set screws on the face of the piston 1 is a flanged plate 2 in
which is screwed a tube 3 the orifice in the screwed end 4 communicating by
a short passage way 5 with the groove 6 formed in the circumference of the
metallic packing ring 7 of the piston 1. The tube 3 passes through a hole 8 in
the end 9 of the cylinder 10, and through a stuffing box 11 fixed by set screws to the
outer face of the end 9 of the cylinder 10. The packing in the stuffing box 11 is
pressed, and held tightly in position preventing the steam, and lubricant coming in
contact by the screwed plug 13, and is inside a cylinder, or containing tube 14 of
metal, said cylinder being fixed to the stuffing box 11 by the connection 144. At the
end of the cylinder 14 (in a vertical engine) is a regulating cock, or oil box 15 for
regulating the supply of lubricant to the said metal tube, or cylinder 14 which is kept
full, or nearly so of oil, or lubricant, and at each forward stroke of the piston 1 the
lubricant is forced down the tube 3, and by the short passage way 5 into the
grooves 6, 6ª which are connected by the passage way 74 in the circumference of
the packing ring 7; the said grooves 6, 64 extending nearly all round the circum-
ference, or radius of the ring 7, lubricates the whole surface, and being provided
with "stops" 16 before reaching the "split" or cut portion of the ring 7, the lubricant
is contained in the groove 6 for a longer period, thus more effectually lubricating the
frictional surfaces with a comparatively small supply of oil.
"
The groove 17 in the second " split or packing ring 18 also contains oil, or
other lubricant which is collected in it during the to and fro movement of the piston 1
in the cylinder 10.

page_text: In a horizontal engine the regulating cock, or oil box 15 for the supply of lubricant
to the cylinder, or containing tube 14, in lieu of being on the apex, as shewn in the
drawing, it will be placed on the top side of the said tube 14, and the several parts
working in manner described, the lubricant is drawn into the groove 6 (the groove 64
being dispensed with which will in this case be formed only along the top of the periphery
(from the points (). D see Fig. 4) of the split packing ring 7 which is held in a fixed
position, with respect to revolving, the lubricant as it escapes from the groove 6, by
gravitation finding its way to the lower portion of the piston 1 and cylinder, and the
ring 18 being formed with the groove 17 nearly all round it as ordinary, gathers the
lubricant from the inside of the cylinder as above described, and the ring 18 is free to
revolve, as are both rings 7. 18 in a vertical cylinder.
Inside the "split" or packing rings 7. 18 which are bevelled as shewn in Fig. 3 is
the spiral spring 19 for the purpose of keeping the said rings expanded, and in close
contact with the interior of the cylinder 10, such spring 19 being formed in one
length, its ends 20, 21 being held, connected together by the short length of metal 22
turned to the size of the interior of the spring 19, and having midway its length a
narrow flange, à collar 23, so that when the metal 22 is bent to the radius of the
spring 19 when in position receives on each side of the said flange, or collar 23, the
ends 20, 21 (see Fig. 2) of the spring 19 which thus forms a complete circle ready
for insertion and compression within the space formed by the bevelling, or angling off,
of the two inner surfaces of the packing, or split rings 7. 18 (see Fig. 3.
my
Having now particularly described, and ascertained the nature, and object of
said invention, and in what manner the same is to be performed, I would have it
understood that I lay no claim to the packing rings, and coiled spiral spring pe se, as
this, I have found is not new, but what I do claim is :-
1. The general construction, combination, and arrangement of the parts employed
for lubricating the piston, in a vertical, or horizontal cylinder, as herein described,
and substantially as illustrated by the annexed drawings.
2. The piston 1 and packing rings 7. 18 with the grooves 6.6 and 17 as described,
the tube 3, stuffing box 11 and lubricant containing tube 14, all in combination as,
and for the purpose herein described, and substantially as illustrated by the annexed
drawings.
3. The piston 1 and packing rings 7. 18 with the grooves 6, and 17 as described,
the tube 3 stuffing box 11, and lubricant containing tube 14, all in combination as,
and for the purpose herein described, and substantially as illustrated by the annexed
drawings.
Dated this 01st day of Monah 1800