An Improved Coupling Link for Chains and Chain Cables and for other like purposes.
Year: 1891

page_text: Date of Application, 6th Apr., 1891
Complete Specification Left, 6th Jan.. 1892-Accepted, 6th Feb., 1892
PROVISIONAL SPECIFICATION.
An Improved Coupling Link for Chains and Chain Cables and for
other like purposes.
I, JOSEPH MAYERS DAVIS, of 43, Francis Road, Edgbaston, Birmingham,
Warwickshire, Importer, do hereby declare the nature of this invention to be
as follows:--
This invention consists in the herein described improved coupling link which is
designed more particularly for connecting together the end links of those weldless
stud chains and stud chain cables in which the stud is formed integral with the
sides of the link, but my invention can also be similarly used with other chains and
chain cables or for other like purposes.
The said improved coupling link resembles one of the said weldless links but
opened at one end far enough to admit the links to which it is to be coupled and
these ends are scarfed down ready for welding together. Each side of the said
coupling link has a portion of the stud formed with it so that when the ends of the
link are welded together and the sides closed towards cach other as hereinafter
described the ends of these projecting parts will abut together and form the stud.
These abutting ends are or may be notched or otherwise formed to ensure their
meeting evenly together. The projection on one side of the coupling link must be
short enough to permit of that side of the link being threaded through the links
to which it has to be coupled. Each end of the link is swelled out to afford
increased strength and wearing surface.
The coupling link above described is by preference made from a mild steel or
other suitable metal bar by stamping between dies which are sunk to correspond
and leave the ends scarfed down ready for welding.
To connect together the two end links of a chain or chain cable by the coupling
link above described the coupling link is threaded through the said two end links
and the latter passed along beyond the projections which form the stud. The ends of
the coupling link are then welded together leaving the two portions of the stud a short
distance apart. One of the said end links is then passed along to the other side of
the stud. The sides of the coupling link are then squeezed towards each other
(either by a special tool forming no part of this invention, or by hammering or
other means) until the two portions of the stud abut together when the coupling
link will have the same appearance and strength as the other links of
the chain.
Instead of forming a portion of the stud on each side of the coupling link, the
whole of the stud may be formed on one side of the link and abut against the other
side when the link is closed.
1 1001
CHARLES BOSWORTH KETLEY,
Agent for the Applicant.

page_text: COMPLETE SPECIFICATION.
An Improved Coupling Link for Chains and Chain Cables and for
other like purposes.
I, JOSEPH MAYERS DAVIS, of 43, Francis Road, Edgbaston, Birmingham,
Warwickshire, Importer, 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 consists in the hereindescribed improved coupling link which is
designed more particularly for connecting together the end links of those weldless
stud chains and stud chain cables in which the stud is formed integral with the
sides of the link, but my invention can also be similarly used with other chains
and chain cables or for other like purposes.
I will describe my invention by referring to the accompanying drawing
on which
Fig. 1 is a front view and a plan, and Fig. 2 is a side view of a coupling link
made according to this invention, open ready for connecting together the end links
of stud chains and stud chain cables in the manner illustrated by Figs. 3 and 4;
Fig. 5 shews a slightly modified form of my invention.
My improved coupling link which is marked A resembles one of the said
weldless links opened at one end (see Fig. 1) far enough to admit the links B
and C to which it is to be coupled and these ends a a² are scarfed down ready for
welding together. Each side of the coupling link A has a portion (marked
respectively d d²) of the stud formed with it so that when the ends of the link are
welded together and the sides of the link closed towards each other as hereinafter
described and shewn in Fig. 4 the ends of these projecting parts d' d' will shut
together and form the stud. These abutting ends ¹² are or may be notched as
shewn or otherwise formed to ensure their meeting evenly together. The pro-
jection 2 on one side of the coupling link is made shorter than the projection
the other side thereof so as to permit of that side of the link which has the pro-
jection being threaded through the links B and C to which the link A has to be
coupled. Each end of the link A is swelled out to afford increased strength and
wearing surface as are the other links in the chain or chain cable.
on
The coupling link A above described is by preference made from a mild steel or
other suitable metal bar by stamping between dies which are sunk to correspond
with the form of the link shewn in Figs. 1 and 2 and leave the ends a¹ a scarfed
down ready for welding.
To connect together the two end links B and C of a chain or chain cable by the
coupling link A above described, the coupling link A is heated and threaded
through the two end links B and C and the latter are as shown in Fig. 3 passed
along beyond the projections d' d² which form the stud. The ends a' a² of the
coupling link A are then further heated and welded together leaving the two
portions of the stud a short distance apart as shewn in Fig. 3. The end link B is
then passed along to the other side of the stud. The sides of the coupling link
are then squeezed towards cach other preferably while the coupling link is hot
(either by a special tool forming no part of this invention, or by hammering or any
other means) until the two portions d' d² of the stud abut together as shewn in
Fig. 4 when the coupling link A will have the same appearance and strength as the
other links of the chain.
Instead of forming a portion of the stud on each side of the coupling link A as
shewn in Figs. 13 and 4 the whole of the stud may be formed on one side
of the link as shewn in Fig. 5 and abut against the other side when the link
is closed.

page_text: 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 improved coupling link for connecting together the end links of stud chains
and stud chain cables and for other like purposes, herein before described and
illustrated by the accompanying drawing, that is to say, a coupling link such as A
having a portion of the stud formed integral with each side of the link (Figs. 13
and 4) or having the whole of the stud formed integral with one side of the
link (Fig. 5) one end of the link being open and scarfed down ready for welding,
substantially as hereinbefore set forth and shewn on the accompanying drawing.
Dated this 4th day of January 1892.
CHARLES BOSWORTH KETLEY,
Agent for the Applicant.