HOOK, LINK, AND CHAIN AND SLING."
Year: 1880

page_text: LETTERS PATENT to James Brown, of 15, Water Street, Liverpool, in the
AN IMPROVED DISENGAGING
County of Lancaster, for an Invention of
HOOK, LINK, AND CHAIN AND SLING."
"
PROVISIONAL SPECIFICATION left by the said James Brown at the Office
of the Commissioners of Patents on the 22nd December 1880.
JAMES BROWN, of 15, Water Street, Liverpool, in the County of Lancaster.
"AN IMPROVED DISENGAGING HOOK, LINK, AND CHAIN AND SLING."
My Invention relates,-
First. To a novel combination of hook, link, chain and sling, to be used for
purposes such as taking in or discharging cargo, such as pig iron, boxes, bales, or
the like.
Second. To an adaptation of the hook and chain for lowering and disengaging
ships' boats.
Under the first part, my Invention consists of a link or shackle to which is
pivotted a tumbling hook, to the shank end of which is attached a pendant chain
which serves to assist the tumbling propensity of the hook. The end of the
pendant chain is also supplied with a hook which is of ordinary type. The sling
consists of a length of chain with a single or double eye or ring at one end, which
is attached to the chain in a cup; the other end of the chain is provided with a
hook, which hook has a ring or eye in its bent part.
In the practice of my Invention the link with the tumbling hook and pendant
chain is hooked over or suspended from the hook or chain of the crane or other
hoisting and lowering apparatus to which it is applied. The sling is passed round
the article or articles to be lowered, and the hook of the sling is hooked round the
sling chain, forming a running noose. The ring on the sling chain is then hooked
onto the tumbling hook, and the hook on the pendant chain from the tumbling
hook is hooked into the ring on the bent part of the sling hook. The action is,
for example, the sling being filled with or round a bundle of pig iron, the
tumbling hook being attached thereto, and likewise the pendant chain, in the
manner described, the bundle is lowered. The instant the lowering action is
arrested or accomplished the tumbling hook automatically disengages itself from
the sling, and upon hoisting or hauling on the chain the sling is automatically

page_text: disengaged from the bundle of pig iron. Where it is desired to weigh pig iron
or like articles the sling through its cup and hook keeps the bundle together
during the weighing operation, after which it can be again lifted, discharged, and
tipped by attaching the hook on the pendant chain to any convenient part of the
sling chain. For lifting and disengaging boxes, cases, and the like, the box is
by preference lowered onto some article slightly raised at one or both ends to allow
of the sling chain being drawn from under. The ring on the cup of the sling may
be formed with two eyes, or a double ring may be used so that a guy rope or ropes
may be applied.
Under the second part I apply my Invention to lowering boats.
When applying my Invention to boat lowering apparatus I fit the ends of the
boat with a ring or sheave, one at each end of the boat, and I pass a length of
chain or rope through these rings or sheaves. This chain or rope has a ring at
each end which takes through the ring bolts of the boat and over the tumbling
hook described under the first part, which hook is suspended or hung from the
blocks of the davit ropes. When at sea the tumbling hooks can thus be applied
to boat lowering apparatus, and when in port the same tumbling hooks can be used
for discharging or loading cargo.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said James Brown in the Great Seal Patent Office on the 21st June
1881.
JAMES BROWN, of 15, Water Street, Liverpool, in the County of Lancaster.
"AN IMPROVED DISENGAGING HOOK, LINK, AND CHAIN AND SLING."
My Invention relates,―
First. To a novel combination of hook, link, chain and sling, to be used for
purposes such as taking in or discharging cargo, such as pig iron, boxes, bales,
or the like, and is applicable also for the working or tipping of buckets, skeps, and
the like.
Second. To an adaptation of the book and chain for lowering and disengaging
ships' boats.
The following is a description of my Invention sufficient to enable any skilled
person to put the same into operation, reference being had to the annexed Sheet
of Drawings making a part of this Specification, which are marked with letters
and figures of reference corresponding with those used in the description, like
letters and figures being used to denote the same or corresponding parts throughout
the various views.
Figure 1 illustrates a hook, link, chain and sling according to my Invention.
A is the hook; B, the link; C, the chain; and D, the sling.
Under the first part, my Invention consists of the link B to which is pivotted
the tumbling hook A, to the shank end of which is attached a pendant chain C
which serves to assist the tumbling propensity of the hook A. The hook A is
provided with a stop or provision a to prevent it from being turned the wrong
way round through the link B. The end of the pendant chain C is supplied with
a hook E, which is of ordinary type, and is provided with an eye in its bend
at F, and, further, of the sling D, which consists of a length of chain with a
single or double eye or ring H (at one end), which is attached to the chain in a
cup J. The other end of the chain is provided with a hook K which has a ring
or eye L in its bent part.
In the practice of the first part of my Invention the link B with the tumbling
hook A and pendant chain C is hooked over or suspended from the hook or chain
of the crane or other hoisting and lowering apparatus to which it is applied; for
example, it is passed over the hook M and seized or secured there, as shown in the
various examples illustrated in the Drawings. The sling D is passed round the
article or articles to be lowered, and the hook K of the sling D is hooked round
the sling chain, forming a running noose. The ring H on the sling chain is then
hooked onto the tumbling hook A, and the hook E on the pendant chain C is
hooked through the noose of the sling, or into the ring or eye Ĺ on the bent part
of the sling hook. The action is, for example, reference to Figures 2 and 3, the
sling D being filled with, or round a bundle of pig iron N, the tumbling hook A
being attached to the sling, and likewise the pendant chain C, in the manner
described and illustrated, the bundle N is lowered. The instant the lowering
action is arrested and the bundle is deposited on the ground or other receiver, the
tumbling hook A automatically disengages itself from the ring H of the sling D,
and upon hoisting or hauling of the crane chain the sling is automatically
disengaged from the bundle. Where the hook E is passed through the running
When
noose the gear takes the position (when disengaging) shown at Figure 3.
the hook E is passed through the eye L the sling entirely disengages and is
brought up on end. Where it is desired to weigh pig iron or like articles the
sling D, through its cup J and hook K, keeps the bundle together during the

page_text: JAMES (L.s.) BROWN.