An Improvement in the Manufacture of Engine or other similar Packings.
Year: 1887

page_text: Date of Application, 17th June, 1887.
Specification Accepted, 29th July, 1887.
COMPLETE SPECIFICATION.
An Improvement in the Manufacture of Engine or other similar
Packings.
I, DAVID GORDON CRESSWELL of Woodbine Street Barker End Road Bradford in
the County of York Engine Packing Manufacturer 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 the manufacture of that class of engine or other similar
packing in the form of a circular rope or gasket or ribbon gasket or other form of
gasket not being of a square section, which is composed of single threads of yarn or
threads of two or more folds twisted together, or one or more strands twisted or
plaited together, or yarn braided ply upon ply by means of a braiding machine,
or braid laid together, one on the other.
Asbestos hemp, flax cotton or any other fibrous material may be employed and the
packing may be covered with india rubber canvas cloth, asbestos flax cotton or other
textile fabric.
This packing is made in continuous lengths and cut to the proper size for the
stuffing box when used.
The object of my invention is to unite the threads strands or plies firmly together
one with the other, thereby causing them to retain the lubricating material more
perfectly and increasing the strength and durability of the packing.
This I effect by taking the rope or gasket and by means of a machine made like an
ordinary lock stitch or other kind of sewing machine (but of a larger and stronger
construction) I stitch through the same from side to side lengthwise or spirally round
the rope or gasket so as to stitch or unite the threads or strands firmly together and
by this combination I produce a much stronger and more durable packing than any
packing of this kind hitherto made.
I prefer to use a lockstitch sewing machine sewing one row of stitches along the
rope or spirally around it and then turning the rope over sewing another row in the
reverse direction whereby the stitching is reversed and becomes much more permanent
and will hold quite firmly even when worn through on one side. One two, three or
other number of rows of stitching may be used as preferred.

page_text: Flax hemp cotton or other fibrous thread or wire may be used for stitching
according to the nature of the packing and the use for which it is to be employed.
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 :-
First. Sewing or stitching in a straight, waved or other longitudinal line or lines
by means of a lock stitch or other kind of sewing machine, all descriptions of fibrous
engine or other packings, other than square rope or gasket substantially in the manner
and for the purpose hereinbefore set forth.
Secondly. I claim sewing or stitching in a spiral direction by means of a lockstitch
or other kind of sewing machine all descriptions of fibrous engine or other packings
substantially in the manner and for the purpose hereinbefore set forth.
Dated this 16th day of June 1987
GEORGE DAVIES,
4, St. Ann's Square, Manchester,
Agent for the Applicant.