Improvements in Metallic-faced Packings for the Glands of Steam, Hydraulic, Air, or Gas Engines.
Year: 1897

page_text: Improvements in Metallic-faced Packings for the Glands of Steam,
Hydraulic, Air, or Gas Engines.
I JOHN HAILWood of 156 Firth Park Road, Pitsmoor, Sheffield, in the County
of York, Engineering Draughtsman, do hereby declare the nature of this invention
to be as follows:-
My Invention relates to Improvements in Metallic-faced packings for the glands
of steam Hydraulic, Air, or Gas engines, and has for its object the reduction of the
friction between the packing and the rod.
In carrying out my Invention I use a series of antifriction metal rings, in pairs,
which are made to fit and come into contact with the rod. The cross section of
cach of these rings is partly conical and partly cylindrical. The cylindrical parts
of each pair of rings are placed together when fixed in the stuffing box of the
Gland.
<<
On the outside of each pair of said antifriction-metal rings I place a solid elastic
ring made of what is known as Dexine,'
," "Woodite" or any other material which
is both elastic and inadhesive.
The cross section of each of these elastic rings is square or rectangular with
a V on the inside, each ring being made to fit between each pair of metal rings
and the inside of the stuffing box. Each elastic ring is also made somewhat wider
than each pair of metal rings, so that when the whole series of rings have been
inserted in the stuffing-box, and the gland screwed up against the outer set of rings,
the elastic rings becoming compressed in a line with the rod, tend to press the
metal rings againts it. When the metal rings have become slightly worn, the gland
is again slightly screwed up.
The elastic rings may be made either in one complete ring or in segments.
But the metal rings are cut into one two or more parts, either diagonally or
zig-zag, to allow them to close as they wear against the rod.
To prevent the elastic material from getting into the partitions of the metal
rings, I place a strip of thin sheet metal over each partition, between the elastic
and metal rings.
1000

page_text: Improvements in Metallic-faced Packings for the Glands of Steam,
Hydraulic,, Air, or Gas Engines.
I JOHN HAILWOOD of 156 Firth Park Road, Pitsmoor Sheffield in the County
of York, Engineering Draughtsman, 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 stateinent:
-
My Invention relates to improvements in Metallic Faced Packings for the Glands
of Steam, Hydraulic, Air or Gas Engines, and has for its object the reduction of
the friction between the packing and the rod, or ram.
In carrying out my invention I use a series of Antifriction metal rings which are
Inade to fit the rod or ram. The cross section of each of these metal rings is partly
conical and partly cylindrical.
On the outside of each pair of said Antifriction metal rings, place a solid
elastic ring, made of what is known as "Dexine" or any other material possessing
similar qualities, and which is both elastic and inadhesive. The cross section of
each of these elastic rings, is partly square or rectangular, and partly conical on
the inside, each ring being made to fit round the metal rings, and the inside of the
stuffing box, but in some cases in order to lengthen the packing in existing gland
boxes I insert the said metal and elastic rings in a metal bush which is made to fit
inside the gland box and project a little beyond its face.
The whole series of rings being placed in the stuffing box so that the joints of
adjacent rings do not come together, and the gland slightly screwed up against the
outer set of rings. The elastic rings then become compressed in a line with the rod
or rain, and thus tend to press the metal rings against it.
When the metal rings have become worn, the gland is again slightly screwed up..
The elastic rings are by preference made in one ring, and cut through in one
place, in a line with the rod or ram, and are made to spring over and around the
metal rings.
The metal rings are cut in two or more segments, the ends of each segment
being made to either hook together or tongued and grooved, and the other ends cut.
either diagonally or zig zag, to allow them to close automatically as they wear against
the rod or ram.
In order that iny said invention may be fully understood, and carried into effect I
will proceed to describe the drawings hereunto annexed.
Fig. 1 is a longitudinal section through the Stuffing Box F. Gland G. and metal
rings M.
Elastic Rings D and rod or ram P.
Fig. 2 is an outside view of the metal rings shewn in the section by Fig. 1.
Fig. 3 is an end view of the metal rings shewn by Figs. 1 and 2.
Fig. 4 is a section of the elastic rings shewing a modification of the arrangement
before described.
Fig. 5 is a longitudinal section through the stuffing box F, Gland G with the said
metal rings M. and elastic rings D inserted in a metal bush B.
Fig. 6 is an outside view of the metal rings shewn in section by Fig. 5.
Similar letters of reference, indicate similar parts in either of the six figures.
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;
1st. In metallic faced packings for the Glands of Steam, Hydraulic, 'Air or Gas
Engines. The combination of a series of Anti friction metal rings, and a series of

page_text: elastic and inadhesive rings constructed and arranged in the Gland box, substantially
as hereinbefore described and illustrated by the drawings hereunto annexed, with
reference to Figures 1. 2. 3 and 4.
2nd. In metallic-faced packings for the purpose herein before described, the
combination of a series of Anti friction metal rings, and a series of Elastic and
inadhesive rings inserted within a metal bush, the whole constructed and arranged
in the gland box, substantially as hereinbefore described and illustrated by the
drawings hereunto annexed, with reference to Figures 5 and 6.
Dated thin Tralfk (10th) dan of T.... 1007
JOHN HAILWOOD,
Applicant.