Improvements in the Manufacture of Packing Applicable for use in Steam-engine Stuffing-boxes and otherwise.
Year: 1889

page_text: Late of Application, 26th Jan., 1889
Complete Specification Left, 26th Oct., 1889-Accepted, 14th Dec., 1889
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Packing Applicable for use in
Steam-engine Stuffing-boxes and otherwise.
1, TEMPLE THEODORE COWELL, of 35, Queen Victoria Street, in the City of
London, Mechanical Engineer, do hereby declare the nature of this invention to
be as follows:-
This invention relates to an improved manufacture of packing for piston-rods and
the like, amongst other uses, and consists in the employment of anti-friction or other
suitable metal, such as lead, combined in a peculiar manner with hemp, jute or other
similiar material.
Packing constructed in accordance with the present improvements is composed of a
number of strands of hemp, jute or similar material; each strand consisting of a metal
core about which the hemp, jute or other yarn is plaited. The core is preferably
in the form of wire of circular section. According to the particular size of
packing required, a given number of such strands are united, preferably by plaiting,
until a rope of the desired thickness is formed. The packing is then treated with a
lubricative composition insoluble in steam; or the several strands may be similarly
treated previously to being laid or plaited into a rope. In transverse section, the rope
may be of circular, oblong or other form, according to the circumstances of its
intended use. As wear takes place, the hemp or jute and the metal core appertaining to
each strand are worn away simultaneously; whereupon the packing, although largely
composed of metal, may be tightened laterally upon the surface of the piston-rod by
applying pressure in an axial direction.
It will be perceived that packing of the kind hereinbefore described is not
exclusively applicable for use in stuffing-boxes, but may be employed for manhole-
cover and other face joints; an endless grommet being readily formed, either from
the strand or from the rope, by plaiting in the usual manner.
Dated this 541 dav of Tonvows 1000
G. G. M. HARDINGHAM,
191, Fleet Street, London, E.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Packing Applicable for use in
Steam-engine Stuffing-boxes and otherwise.
I, TEMPLE THEODORE COWELL, of 35, Queen Victoria Street, in the City of
London, Mechanical Engineer, do hereby declare the nature of this invention and in
what manner the same is to be performed to be particularly described and ascer-
tained in and by the following statement :-
This invention relates to an improved manufacture of packing for use with piston-
rods and the like, amongst other purposes, and consists in the employment of
anti-friction or other suitable metal, such as lead, combined in a peculiar manner with
hemp, jute or other similar material.
ог
Packing constructed in accordance with the present improvements is composed
of a number of strands of hemp, jute or similar material; each strand consisting
of a metal core about which the hemp, jute or other yarn is plaited, twisted
wrapped. The core is preferably in the form of wire of circular section. According
to the particular size of packing required, a given number of such strands are united,
preferably by plaiting, until a rope of the desired thickness is formed. The packing is
then treated with a lubricative composition insoluble in steam; or the several strands

page_text: In
may be similarly treated previously to being laid or plaited into a rope.
transverse section, the rope may be of circular, oblong or other form, according to the
circumstances of its intended use. As wear takes place, the hemp or jute and the
metal core appertaining to each strand are worn away simultaneously; whereupon
the packing, although largely composed of metal, may be tightened laterally upon
the surface of the piston-rod by applying pressure in an axial direction.
In this
In the accompanying drawings, Fig. 1 represents in elevation and Fig. 2 in
transverse section packing constructed in accordance with the present invention;
A being the strands, a the metal cores, and a¹ the hemp, jute or other yarn.
illustration, the packing is shewn as consisting of eight strands plaited to a form
approximately square in cross section, but it will be understood that any preferred
number of strands may be plaited or twisted together in order to render the packing
specially adapted for particular uses.
It will be perceived that packing of the kind hereinbefore described is not
exclusively applicable for use in stuffing-boxes, but may be employed for manhole-
cover and other face-joints; an endless grommet being readily formed, either from
the strand or from the rope, by plaiting in the usual manner.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, I claim :-
:-
1. The improved manufacture of packing applicable for use in steam-engine stuffing-
boxes and otherwise, substantially as herein described.
2. The improved manufacture of packing composed of two or more strands twisted
or plaited together, each strand consisting of an anti-friction or other metal core about
which a covering of hemp, jute or similar material is plaited, twisted or wrapped
substantially as herein described.
Dated this 24th day of October 1889
G. G. M. HARDINGHAM,
191, Fleet Street, London, E.C., Agent for the Applicant.