A Coal or Ballast Tub arranged for Automatic Discharge
Year: 1899

page_text: Date of Application, 11th Dec., 1899
Complete Specification Left, 3rd Sept., 1900-Accepted, 11th Jan.,
1901
PROVISIONAL SPECIFICATION.
A Coal or Ballast Tub arranged for Automatic Discharge,
HENRY HARRISON, Book Keeper, 10, Guion Road, Litherland, Liverpool, do
hereby declare the nature of this invention to be as follows:-
A tub made cylindrical in form, with a divided flap bottom, the inner side
of each flap to have an eye bolt attached to it, to which is secured a link chain, which
is carried up the bucket or tub, & through an eye formed in the bail, which is
made suitable to the working of the chain or "rope" & is also set with rollers, to
ease the friction of the rope or chain when working.
On the outer side of the tub & at a suitable distance above the centre, a flange
is securely arranged, the object being that when the tub is full & being lowered
to a desired point, there is set a suitable rest, which engages with the flange on
the tub, & so holds it, the chain still lowering the weight of the contents of
the tub, forces the flap bottom open & so discharges itself.
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The flap bottom being hinged to the body of the tub, the drawing up of the
chain closes the bottom & takes the tub up to any desired point.
16 inverted cone by
When desired. the tubs can be made in the form of an
which it is not necessary to have a flange on the body of the tub, as the tub when
engageing with the rest, would find its point of resistance at its greatest diameter &
so hold it until the contents were discharged by the lowering of the rope.
COMPLETE SPECIFICATION.
A Coal or Ballast Tub arranged for Automatic Discharge.
I, HENRY HARRISON, of 10, Guion Road, Litherland, in the County of Lan-
caster, Book-keeper, 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 relates to tubs or buckets of the kind used for hoisting coal,
ballast, and the like, and has for its object to provide a simple and efficient
arrangement for automatically opening the bottom to discharge the contents
and for afterwards closing the same.
In order to facilitate description the invention will be described with reference

page_text: to the accompanying drawing which shows a sectional elevation of a coal or ballast
tub or bucket provided with the improvements of the present invention.
The bucket or tub A which may be cylindrical in form is provided with a
divided flap bottom B, B₁ adapted to open outwards on hinges C, C¹ which are
preferably arranged at the sides as shown in order to avoid any obstruction to
discharge such as would be presented by the flaps, and the cross bar required to
carry the same, if hinged in the centre. Each flap is attached for instance by
means of short chains and eye-bolts G, G¹ on the inner side to a chain or rope D
which is carried up the bucket or tub and through an eye or guide E in the top
of the bail F which is secured rigidly to the upper part of the body of the tub
to extend across or over from side to side. The eye or guide E may be set
with rollers or balls to ease the friction of the chain when working.
On the outer side of the tub, and at a suitable distance above the centre, a
flange H is securely arranged with the object of supporting the loaded tub at the
desired point of discharge where I provide a ring, fork, or other suitable rest
adapted to receive or engage the portion of the tub below the flange in such a
way that the latter will sit on the support, and thus hold the tub. In place of
a flange, equivalent means of support may be adopted such as by forming the
bucket of a tapered or inverted cone shape which would have its point of support
in the rest near its greatest diameter.
It will be at once seen that upon the chain D being drawn up, the tub
which has first been loaded, will be lifted and can be carried securely with its
contents to the point of discharge as the pull comes directly on the hinged
bottom and keeps it closed. Upon reaching the point of discharge the tub is
allowed to drop or slip into the rest before mentioned which thus supports it,
and upon the chain being lowered a little the pull is relaxed and the weight of
the contents automatically forces open the hinged bottom, whereupon the tub is
discharged of its contents, the, flexibility of the chain preventing it from obstruct-
ing the discharge by jamming with the contents. By again drawing up the
chain the bottom is closed and the empty tub may be taken to any desired point.
A ring I or the like may be provided on the chain to act as a stop by engaging.
the bail to allow only a sufficient extent of chain to drop through the eye E
as is requisite for the opening of the hinged bottom when the tub sits in its
rest or support.
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:
1. The improvement in tubs or buckets of the kind described, which consists
in carrying the lifting or suspending chain or rope through a guide into the
tub, and attaching it directly to the flap bottom which is hinged to open outwards,
whereby the bottom is closed and retained simply by the pull on the lifting
chain and opens automatically on the pull being relaxed, substantially as herein-
before set forth.
2. In tubs or buckets of the kind described, the provision in combination there-
with of means for supporting the tub at the point of discharge substantially in
the manner set forth, for the purpose of enabling the weight of the contents to
automatically force open the hinged bottom of the tub and to thus be discharged
on the chain being slacked.
3. In tubs or buckets of the kind described, providing a guide for the sus-
pension chain or rope by forming an eye in the bail which is rigidly connected to
the tub, substantially as described.
4. In tubs or buckets of the kind described, a divided flap bottom having its
hinges attached to the tub at the sides in order to avoid any obstruction to the
discharge such as would be presented by a central hinging substantially as
described..

page_text: 5. The improved bucket or tub for coal, ballast and the like constructed and
operating as a whole substantially as herein before described with reference to
the drawing.
of Contamber 1900
WM. P. THOMPSON & Co.,
Patent Agents,
Of Liverpool, Manchester, Birmingham, and London.