Cylinders and other Apparatus.
Year: 1885

page_text: Cylinders and other Apparatus.
We, JAMES JACK GALLOWAY, of 27 Mair Street, Govan, in the County of
Lanark, North Britain, Engineer, and GEORGE MOFARLANE, of Dunsloy, Bella-
houston, Govan aforesaid, Engineer, do hereby declare the nature of this Invention
to be as follows, that is to say :—
This Invention has for its object the making of improved packing for the
stuffing boxes of steam-engine cylinders and other apparatus, and which packing
whilst suitable for using with various pressures of steam or other fluid, is capable
of acting satisfactorily with the high pressure and corresponding heat of steam now
employed in marine and other steam engines.
In carrying out the Invention asbestos yarn is used as the chief material of the
packing; and being formed into strands and saturated with tallow, plumbago, or
other suitable lubricant, has fine brass, copper, or other suitable wire wound upon
it with sufficient closeness to bind the asbestos fibres well together.
The asbestos strands wound with wire as described may be made
up in various
ways. They may be plaited to form square or flat gasket, which being cut into
suitable lengths may be compressed in circular dies of sizes to suit the stuffing
boxes for which the packing is intended. Or the gasket may be compressed in
lengths; or instead of plaiting the strands they may be coiled in the circular dies
and be compressed therein to form rings such rings being subsequently bound with
wire or thread.
In applying the improved packing in stuffing boxes of large sizes, it is by
preference combined with metal rings made in two or more pieces and pressed
towards the rod by an external encircling spring of an undulated or other suitable
form. These metal rings are on their inner sides made with cavities which are
filled with the prepared asbestos packing; and gland-like rings may in some cases
be applied for compressing the packing in the cavities the gland in each case being
itself pressed on by the packing in the other part of the stuffing box. Various
kinds of packing may be used with the metallic rings which as it were form a
stuffing box within a stuffing box.
EDMUND HUNT,
Applicants' Agent.

page_text: '
Cylinders and other Apparatus.
We, JAMES JACK GALLOWAY, of 27 Mair Street, Govan, in the County of
Lanark, North Britain, Engineer, and GEORGE MOFARLANE, of Dunsloy, Bella-
houston, Govan aforesaid, Engineer, 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, that is to say :-
This Invention has for its object the making of improved packing for the
stuffing boxes of steam-engine cylinders and other apparatus, and which packing
whilst suitable for use with various pressures of steam or other fluid, is capable of
acting satisfactorily with the high pressure and corresponding heat of steam now
employed in marine and other steam engines.
In carrying out the Invention asbestos yarn is used as the chief material of the
packing; and being formed into strands and saturated with tallow, plumbago, or
other suitable lubricant, has fine brass, copper, or other suitable wire wound or
wrapped upon it with sufficient closeness to bind the asbestos fibres well together.
The strands may be formed of various sizes, but a convenient size of strand is.
about a quarter of an inch thick in its uncompressed state; and on such a strand
the fine wire may be wound so as to make from five to eight coils or turns to
the inch.
The asbestos strands wound with wire as described may be made up. in various
ways. They may be plaited to form square or flat gasket, which being cut into..
suitable lengths may be compressed in circular dies of sizes to suit the stuffing
boxes for which the packing is intended. Or the gasket may be compressed in
lengths; or instead of plaiting the strands they may be coiled in the circular dies
or be wound on a mandril and be compressed in dies to form rings, such rings being
subsequently bound with wire or thread. The wire may be round, or square, or in
ribbon-like strips or bands, or of any other suitable form.
In applying the improved or as we designate it, compressed asbestos-metallic
packing in stuffing boxes of large sizes, it is by preference combined with metal
rings in a manner shown on an accompanying sheet of explanatory drawings,
figures, 1, and 2, of these drawings being vertical and horizontal sections showing.
one modification, and figures, 3, and 4, being vertical and horizontal sections
showing another modification. In these drawings the same reference numerals are
used to mark the same or like parts wherever they are repeated.
In the modification shown in figures, 1, and 2, there is placed within the main
stuffing box and at the inner end of that box a metal ring, 5, made in two or more
segments and formed with a rectangular groove round its outside, a spring, 6, of an
undulated form being placed in this groove to press the segments of the ring, 5,
against the rod, 7, which works through the stuffing box, (but which is not shown
in figure; 2). The ring, 5, is on its inside made with a space to receive rings, 8,
of the improved or compressed asbestos-metallic packing, and a gland, 9, is pro-
vided for compressing the packing rings, 8, the arrangement forming a stuffing box

page_text: within a stuffing box. One or more larger rings, 10, of the compressed asbestos-
metallic packing are placed between the gland, 9, and the main stuffing box
gland, 11, and when this last is screwed in its pressure is transmitted through the
rings, 10, to the inner gland, 9, and through this gland to the rings, 8, inside of
the metal ring, 5.
In the modification shown in figures, 3, and 4, there is substituted for the ring, 5,
and gland, 9, (figure, 1,) a ring, 12, formed with rectangular grooves round its inner
and outer sides. Rings of the improved or compressed asbestos-metallic packing
may be placed in these grooves so as to pack.the inside of the ring, 12, against the
rod, 7, and the outside of the ring against the inside of the main stuffing box. We,
however, prefer to place in these grooves metal packing rings, 13, 14, as shown in
figures, 3, and 4, these rings being pressed against the sides of the stuffing box and
against the rod, 7, respectively by small helical springs, 15, placed radially in holes
in the web of the ring, 12, and each acting on both metal packing rings, 13, 14.
These rings, 13, 14, are each cut through at one part to allow of their accom-
modating themselves to the surfaces they bear on, the cuts being made in the usual
way to prevent the passage of steam. Rings, 10, of the compressed asbestos-
metallic packing are placed between the ring, 12, and the main stuffing box
gland, 11.
In some cases the ring, 12, may be made without the groove in its
inner side.
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-The improved or compressed asbestos-metallic packing formed by winding or
wrapping metal wire or ribbon upon asbestos substantially as and for the purposes
hereinbefore described.
2 The compound stuffing-box packing made and arranged substantially as
herein before described with reference to figures, 1, and 2, of the accompanying
drawings.
3-The compound stuffing-box packing made and arranged substantially as
hereinbefore described with reference to figures, 3, and 4, of the accompanying
drawings.
EDMUND HUNT,
Applicants' Agent.