Improved Packing for the Stuffing Boxes' of Steam Engines, Pumps, and such like.
Year: 1887

page_text: Date of Application, 15th July, 1887
Complete Left, 15th May, 1888
Complete Accepted, 22nd June, 1888
Improved Packing for the Stuffing Boxes' of Steam Engines, Pumps,
and such like. _
I, AUGUST CONRAD DEWIES, of 10 Place de Londres, in the City of Brussels,
in the Kingdom of Belgium, Civil Engineer do hereby declare the nature of this
invention to be as follows:
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My invention relates to packing made of metallic wire, which packing has hereto-
fore been made, so far as I am aware, by coiling the wire composing it into the form
of a ring, which is afterwards lapped round with string or strips of some suitable
material, intended to hold the wires together. Now according to my invention I wind
the fine inetallic wire intended to form the packing into a coil or bobbin, so that every
layer of wire is placed regularly and exactly parallel to the others, and so that a
transverse section of such coil shall present the form of a parallelogram. The coil or
ring thus made, and bound round in several places temporarily to preserve its shape,
is then placed in a solution of gutta percha or indiarubber in naptha, chloroform or
sulphide of carbon for example. This solution enters and fills up the spaces between
the convolutions of wire comprising the packing, and forms a plastic cementing
material, which holds the said convolutions of wire together, enabling the rings of
packing to be cut so that they can be passed round the piston or other rod, and be
placed in the stuffing box without altering their oblong form of section. Any suitable
number of these packing rings may be placed in a stuffing box, preferably of course,
so that the joint where each one is cut through shall break joint with the next above
and below it.
Any other suitable more or less liquid or plastic and quick drying material may be
employed to cement the convolutions of wire together and to form an impermeable
envelope or casing round them. Some of this material may be placed in the stuffing
boxes with the rings when the packing is put in place, whereby the cementing material
holding the convolutions of wire together, will be dissolved out and the wire alone left
in the box, this dissolution may in some cases be facilitated by the introduction of
petroleum oil, or other suitable solvent.

page_text: Packing made in accordance with my invention lasts much longer than ordinary
packing, produces less friction, preserves its elasticity, and remains light for a long
period, and imparts a fine polish to the rods or other parts working through,
or in it.
A. C. DEWIES.
Per W. H. Beck,
115, Cannon Street, London, E.C.,
Agent.
COMPLETE SPECIFICATION.
Improved Packing for the Stuffing Boxes of Steam Engines, Pumps,
and such like.
AUGUST CONRAD DEWIES, of No. 10 Place de Londres in the City of Brussels in
the Kingdom of Belgium, Civil 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 :—
My Invention relates to packing made of metallic wire, which packing has
heretofore been made, so far as I am aware, by coiling the wire composing it, into
the form of a ring, which is afterwards lapped round with string or strips of some
suitable material, intended to hold the wires together. Now, according to my
invention, I wind the fine metallic wire, intended to form the packing, into a coil or
bobbin, so that every layer of wire is placed regularly and exactly parallel to the
others, and so that a transverse section of such coil shall present the form of a
parallelogram. The coil or ring thus made, and bound round in several places
temporarily to preserve its shape, is then placed in a solution of gutta percha or
indiarubber in naphta, chloroform, or sulphide of carbon for examplo. This solution
enters and fills up the spaces between the convolutions of wire comprising the
packing, and forms a plastic cementing material, which holds the said convolutions of
wire together, enabling the rings of packing to be cut so that they can be passed round
the piston or other rod, and be placed in the stuffing box without altering their
oblong form of section. Any suitable number of these packing rings may be placed
in a stuffing box, preferably of course, so that the joint where each one is cut through
shall break joint with the next above and below it.
Any other suitable more or less liquid or plastic and quick drying material may be
employed to cement the convolutions of wire together, and to form an impermeable.

page_text: envelope or casing round them. Some of this material may be placed in the stuffing
boxes with the rings when the packing is put in place, whereby the cementing
material holding the convolutions of wire together, will be dissolved out and the wire
alone left in the box; this dissolution may in some cases be facilitated by the
introduction of petroleum oil, or. other suitable solvent.
Packing made in accordance with my invention lasts much longer than ordinary
packing produces less friction; preserves its elasticity and remains tight for a long
period, and imparts a fine polish to the rods or other parts working through,
or in it.
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:
The improved packing for stuffing boxes of steam engines, pumps and such like,
consisting in winding the fine metallic wires, intended to form the packing, into a coil
or bobbin, which is then placed in a solution of gutta percha, or indiarubber in naphta,
chloroform or sulphide of carbon, or any other suitable material principally in manner
and for purpose as hereinbefore described.