Year: 1888

page_text: Date of Application, 25th Jan:, 1888
Complete Specification Left, 23rd Oct., 1838
Complete Specification Accepted, 23rd Nov., 1888
Супцио
1, JAMES JACK GALLOWAY, of 27 Mair Street, Govan, in the County of Lanark,
North Britain, Engineer, do hereby declare the nature of this Invention to be as
follows, that is to say :-
My said 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. My improved packing can be made
tight with the application of a moderate compressing force and without greatly
diminishing its elasticity.
In carrying out my Invention I make the packing for a stuffing box to consist
of a set of rings formed principally of fibrous materials such as asbestos, hemp, flax,
and the like, such rings being made with the surfaces in which they are in contact
with each other of counterpart conical forms; so that when the packing is compressed
by means of the stuffing-box gland the rings have a wedging action on each
other.
In making the rings the asbestos or other fibrous material is formed into strands
and saturated with tallow, plumbago, or other suitable lubricant or lubricating
compound, and then fine brass, copper, or other suitable wire is wound on the strands
so as to bind the fibres well together. The material wound with wire as described is
formed into rings with the aid of hydraulic or other pressure in moulds of suitable
forms and sizes. In many cases it is advantageous to combine in the same stuffing
box, rings of different fibrous materials or compressed to different densities; and in
such cases I prefer that the inner rings which are mostly in contact with the rod
which works through the stuffing box should consist mainly or largely of asbestos
or be denser whilst the outer rings consist mainly or largely of hemp, flax, or other
elastic fibre, or are less dense.
D
1
fourth dow of Ton 1888
EDMUND HUNT,
Applicant's Agent.

page_text: Cylinders and other Apparatus.
I, JAMES JACK GALLOWAY, of 27 Mair Street, Govan, in the County of Lanark,
North Britain, Engineer, do hereby declare the nature of this invention and in what
manner the saine is to be performed, to be particularly described and ascertained
in and by the following statement, that is to say :-
My said 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. My improved packing can be made
tight with the application of a moderate compressing force and without greatly
diminishing its elasticity.
In carrying out my Invention I make the packing for a stuffing box to consist of a
set of rings formed principally of fibrous materials such as asbestos, hemp, flax, and
the like, such rings being made with the surfaces in which they are in contact with
each other of counterpart conical forms; so that when the packing is compressed by
means of the stuffing-box gland the rings have a wedging action on each other.
And in order that my said Invention and the manner of performing the same may
be properly understood I hereunto append a sheet of explanatory drawings to be
hereinafter referred to in particularly describing my improvements.
Figures, 1, 2, and 3, of the drawings are sections of stuffing boxes as provided
with slightly different modifications of my improved packing; and figures, 4, and 5,
show modes of forming the joint in each ring.
The packing shown in figure, 1, consists of pairs of rings, each pair consisting of
an inner ring, A, and an outer one, B. The inner ring, A, is made with an inner
cylindrical surface to bear on the rod, C, with a flat surface at right angles to the
axis, and with a third surface which is conical. The outer ring, B, is made with an
outer cylindrical surface to bear on the interior of the stuffing box, D, with a flat
surface at right angles to the axis, and with a third surface which is conical and a
counterpart of the conical surface of the inner ring, A. In the modification shown
in figure, 2, whilst the extreme outer rings, B, are like those of the first modification,
the other outer rings, E, and the inner rings, F, are made each with two conical
surfaces and without flat surfaces In the modification shown in figure, 3, the
packing rings are subdivided in a manner which will be easily understood from
the figure.
In making the packing rings the asbestos or other fibrous material is formed into
strands and saturated with tallow, plumbago, or other suitable lubricant or lubricating
compound, and then fine brass, copper, or other suitable wire is wound on the strands
so as to bind the fibres well together. The material wound with wire as described is

page_text: formed into rings with the aid of hydraulic or other pressure in moulds of suitable
forms and sizes. In many cases it is advantageous to combine in the same stuffing
box, rings of different fibrous materials, or compressed to different densities; and in
such cases I prefer that the inner rings, A, F, which are mostly in contact with the
rod, C, which works through the stuffing box should consist mainly or largely of
asbestos or be denser whilst the outer rings consist mainly or largely of hemp, flax,
or other elastic fibre, or are less dense.
The packing rings are cut through, each at one point, to facilitate placing them
on the rods and in the stuffing box; and in the case of the inner rings, A, F, to
allow of their contraction, as their bearing surfaces in contact with the rod, C, wear,
the joint must be made with a stepped part or covering piece, and either as shown
in figure, 4, or as shown in figure, 5. In some cases I interpose between the conical
surfaces of any pair of inner and outer rings a conically shaped piece of thin sheet
metal which is cut through at one part.
Having now particularly described and ascertained the nature of my said Inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
The making of packing for stuffing boxes in the form of sets of outer and inner
rings all composed principally of fibrous materials bound with wire and having the
contact surfaces between the outer and inner rings conical substantially as hereinbefore
described.