Improvements in or relating to Threads and Yarns for Sewing Purposes, applicable also to Laces, Twines, and the like.
Year: 1892

page_text: Date of Application, 28th Oct., 1892
Complete Specification Left, 28th July, 1893-Accepted, 23rd Sept., 1893
PROVISIONAL SPECIFICATION.
Improvements in or relating to Threads and Yarns for Sewing
Purposes, applicable also to Laces, Twines, and the like.
I, HENRY COOPER PRETTY, of Florence Villa, St. Saviour's Road, Leicester,
Engineer, do hereby declare the nature of this invention, to be as follows:-
This invention has reference to threads and yarns for sewing purposes and is
applicable also to laces, twines and for other purposes.
This invention is designed principally with a view of producing a thread, yarn
or twine for sewing or stitching purposes which shall embody the characteristic
qualities of toughness, flexibility, durability and elasticity combined with a
slenderness or fineness to make it suitable for hand or machine sewing or other
purposes where one or more of the characteristics mentioned, but particularly the
degree of slenderness referred to, is required.
In the sewing or connecting together of the various parts of leather in the
formation of boots and shoes, or leather belting or in fabrics or other materials
which during their existence are subjected to strain or tension, it is essentially
necessary that the connective thread should be primarily slender and flexible, and
very desirable and all important supplementary qualities are toughness, durability
and elasticity.
The threads, yarns, or twines heretofore used for these connecting purposes
have
usually been composed of vegetable or animal fibre, spun to the required thickness,
and while embodying the qualities of slenderness and flexibility, have been for all
practical purposes devoid, or nearly so, of the other characteristics mentioned.
Now in order to attain the object of this invention, it has been found after
considerable experimenting, that a metal, but preferably a copper thread, can be
drawn out to a degree of fineness to render it sufficiently flexible and pliable for
use for sewing or stitching purposes, either by hand or machine.
:
I propose also to combine the metal filament or fine wire with the various
existing forms of hemp, flax, linen, cotton silk or other threads, twines or cords
during the manufacture so that the metal filament may be wholly or partly covered
or hidden thereby.
The metal thread or filament may also be used in combination with threads of
other existing materials, for stay laces, boot laces and for other purposes.
may
The invention is not limited to the use of a copper filament as any metal be
used which is suitable for being drawn into threads or filaments of the required
degree of fineness and flexibility.
Dated this 28th day of October 1892
W. P. THOMPSON & BOULT,
Agents for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in or relating to Threads and Yarns for Sewing
Purposes, applicable also to Laces, Twines, and the like.
I, HENRY COOPER PRETTY of Florence Villa, St. Saviour's Road, Leicester,
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 :-
This invention has reference to threads and yarns for sewing purposes and is
applicable also to laces, twines and the like.
This invention is designed principally with a view of producing a thread, yarn
or the like for sewing or stitching purposes, which shall embody the characteristic
qualities of toughness, flexibility, durability and elasticity, combined with a
slenderness or fineness to make it suitable for hand or machine sewing or other
purposes where one or more of the characteristics mentioned, but particularly the
degree of slenderness referred to, is required.
In the sewing or connecting together of the various parts of leather in the
formation of boots and shoes, or leather belting or in fabrics or other materials
which during their existence are subjected to strain or tension, it is essentially
necessary that the connective thread should be primarily slender and flexible, and
very desirable and all important supplementary qualities are toughness, durability
and elasticity.
The threads, yarns or twines heretofore used for these connecting purposes have
usually been composed of vegetable or animal fibre spun to the required thickness,
and while embodying the qualities of slenderness and flexibility have been, for all
practical purposes devoid, or nearly so, of the other qualities mentioned.
Now in order to attain the object of the present invention it has been found after
considerable experimenting, that a metal, but preferably a copper, thread may be
drawn out to a degree of fineness to render it sufficiently flexible and pliable for
sewing or stitching purposes, either by hand or machine.
In practice I have found that a copper thread which is drawn out to say, from
300 yards to 1800 yards to the pound or thereabouts is suitable for use with a
sewing machine for connecting together the various pieces of leather to form a boot
or shoe upper, the coarser gauge threads being suitable for use with such machines
as the "Blake Sole Sewer." which are, employed for stitching the sole to the upper
of a boot or shoe.
While I have mentioned the special applicability of the metal thread for use
with boots and shoes, it is obvious that such threads are useful and may be employed
for sewing together other materials.
I propose also to combine the metal filament or thread with the various existing
forms of hemp, flax, linen, cotton, silk or other threads, cords, twines or the like
composed of animal or vegetable fibre.
This may be done during the time the threads mentioned are being spun, one or
more strands of the metal thread being incorporated with any of the animal or
fibre threads referred to, in such a manner as to be wholly or partly hidden
thereby.
After the metal thread has been covered with the spun material it may be drawn
through a solution preferably of paraffin wax and by this means make it more
especially suitable for use in the manufacture of boots and shoes.
The metal thread or filament hereinbefore described may also be used in
combination with threads of other existing materials, (animal or vegetable) for stay
laces, boot laces and for other purposes.
The invention is not limited to the use of a copper filament but extends to other

page_text: ductile metals which are capable of being drawn into threads or filaments of the
degree of fineness and flexibility hereinbefore referred to.
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 :-
1. A metal sewing machine thread substantially as described.
2. The use of a metal thread for sewing or stitching purposes substantially as
described.
3. The combination with threads, laces, cords, or twines composed of vegetable
or animal fibres of one or more strands or threads of metal substantially as
described.
HENRY COOPER PRETTY.
W. P. Thompson & Boult,
Agents for the Applicant.