IMPROVEMENTS IN SCREW COUPLINGS FOR CHAINS, ROPES AND THE LIKE
Year: 1885

page_text: I, JOHN HORNSBY CARRUTHERS at Alley & MacLellan's Sentinel Works
Polmadie, Glasgow of Glasgow, in the County of Lanark, North Britain Engineer
do hereby declare the nature of my invention for IMPROVEMENTS IN SCREW
COUPLINGS FOR CHAINS, ROPES AND THE LIKE, to be as follows:-
This invention relates more particularly to that class of screw couplings used
for attaching ropes, chains or rods to fixed objects or to each other, and the
improvements are in simplicity of the parts, and the facility of application of these
improved screw couplings, which are constructed substantially as follows.
A crosshead of cast-iron or other suitable material is formed with a hole through
its centre, and with each end forked-A bar of iron or steel having a solid head
similar to that of an ordinary bolt or rivet on each end, is bent at the middle into
a form resembling the letter U. The proportions of this bar to the said crosshead
must be such, that when one end of the bent bar is placed in one of the forked
ends of the crosshead, the other end can be easily sprung into the other forked end.
The crosshead and bent bar together form a loop of the coupling. Cotters or
screwed nuts can be used on the ends of the bar instead of the solid heads already
mentioned. The screwed end of an eye-bolt is passed through the hole in the
crosshead from the side opposite to the bent part of the bar-and a nut is screwed
on it. By turning this not the distance between the ends of the coupling can be
made shorter or longer as desired-The nut can be made to be turned by a spanner,
a rachet lever, or by a sliding bar passing through the side of the nut.
•
Dated this nineteenth day of January 1885

page_text: Improvements in Screw Couplings for Chains, Ropes, and
the like.
I, JOHN HORNSBY CARRUTHERS, at Alley and MacLellan's, Sentinel Works,
Polmadie, Glasgow in the County of Lanark North Britain, Engineer do hereby
declare the nature of my invention for IMPROVEMENTS IN SCREW COUPLINGS
FOR CHAINS, ROPES AND THE LIKE and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:
passed
A crosshead is formed with a hole in the centre, and a fork at each end. A bar
of iron or other suitable material, having at each end a stop which may be a solid
head, a screwed nut, a cotter or the like, is bent into a form resembling the
letter U. The proportions of this bar are to be such that when one end of it is
placed in one of the forked ends of the crosshead, the other end can be sprung into
the other forked end of the crosshead. The screwed end of an eye bolt
through the centre hole in the crosshead from the side opposite to the bent bar, by
screwing a nut on it, and by turning this nut, the distance between the ends of
the coupling can be made shorter or longer as desired. This nut can be turned by
a spanner, a ratchet lever, a sliding bar or the like, and the various parts can be
made of iron, steel or other suitable material.-Figure 1 shows an arrangement
of coupling wherein the nut (d) is formed with a head suitable for a spanner, the
body of the nut is round, and has a recess around it, into which a ring (e) can be
inserted after the nut is placed in the crosshead (a). Figure 2-Shows an arrange-
ment wherein the crosshead (a) can be cast around the nut (d). Figure 3-Shows
an arrangement of nut (d) similar to that in figure 1, but with the crosshead (a)
and the bar (b) arranged so that one end of the bar can be passed through the
forked end of the crosshead as well as sprung into it.
Having now particularly described and ascertained the nature of my inven-
tion, and in what manner the same is to be performed, I declare that what
I claim is
1st The combination of the forked crosshead with the bent bar, substantially as
described herein, and as applied in Screw Couplings for chains, ropes and the like.
Dated this 28th day of Sentember 1885.