An Improved Grab or Bucket for Dredging Sand, Mud, Gravel, or the like.
Year: 1895

page_text: Date of Application. 2nd July, 1895
Complete Specification Left, 1st May, 1896-Accepted, 6th June, 1896
PROVISIONAL SPECIFICATION.
An Improved Grab or Bucket for Dredging Sand, Mud, Gravel, or
the like.
I JOSHUA BATTY of 7 Hampden Terrace, Lockwood Street, Hull in the
County of Yorks, Sloopman, do hereby declare the nature of this invention, to
be as follows:-
The object of my invention is to make a grab or bucket for dredging sand,
gravel, mud or the like, which shall be simple of construction, easily and cheaply
manufactured, and shall be effective in the operation of dredging.
I construct my grab or bucket of preferably semicircular shape at the ends,
divided in the middle vertically, being cut in half to form two jaws, these jaws are
hinged at the top to two or more bars running across the top of the grab, and the
inner top corners are hinged or pivotted to levers, preferably three levers at each
end, such levers being in turn connected by a bar or bow running over the centre
of the grab lengthwise.
To each of the jaws I attach by bolting or otherwise, eyelets or links, to which
chains are attached, also to the bar or bow running over the centre of the grab,
connecting the levers, I attach a chain, each of these chains being connected to
the crane or derrick working the grab.
I
In place of the levers hinged to the inner top corners I may employ chains, and
may also employ a suitable number of grooved wheels or barrels to receive these
chains, the said wheels or barrels being keyed on to a shaft mounted in bearings
on the bars running across the top of the grab.
The action is as follows:-When dredging, the grab is attached to the crane by
the chains in the usual manner, when lowering the grab the chain attached to the
centre bar or bow connecting the levers is run slack, the chains attached to the
eyelets on the outside of the jaws are tightened and draw the jaws apart opening
them outward on account of being hinged at their inner corners.
When the grab
is being drawn up the chain attached to the centre bar is drawn tight drawing the
levers together which in turn close the jaws, such jaws, as they close scoop up the
sand or the like which is retained in the grab as it is drawn up.
Dated this Thirtieth day of June 1895.
JOHN E. WALSH,
Savile Street, Hull, and Crossley Street, Halifax,
Agent for the Applicant.
An Improved Grab or Bucket for Dredging Sand, Mud, Gravel, or
the like.
I JOSHUA BATTY of 67 Balfour Street, and late of 7 Hampden Terrace,
Lockwood Street, both in Hull in the County of Yorks, Sloopman, 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:-
The object of my invention is to make a grab or bucket for dredging sand,

page_text: gravel, mud or the like, which shall be simple of construction, easily and cheaply
manufactured, and shall be effective in the operation of dredging.
DESCRIPTION OF DRAWINGS.
Fig. 1. shows end view of my improved grab or bucket.
Fig. 2. shows plan view of Fig. 1.
Fig. 2 shows plan view of flat bar with holes for taking chains and shackle.
Fig. 3. shows end view of grab opened.
I construct my grab or bucket A of preferably semi-circular shape at the ends B
divided in the middle vertically at C, being cut in half to form two jaws, these
jaws are hinged at their tops to two or more bars E running across the top of the
grab, and the inner top corners are hinged or pivotted at F to levers G G there
are preferably three levers at each end, the two levers G G at each end, are each
pivotted to levers H H one lever H at each end, such levers H H in turn
being connected by a bar or how J running over the centre of the bucket
lengthwise.
To each of the jaws I attach by bolting or otherwise, eyelets or links K, to
which chains L L are attached, also to the bar or bow J running over the centre
of the bucket connecting the levers, I attach a chain M which is connected to the
crane or derrick working the grab, the chains L L also being connected to such
crane or the like.
For the purpose of causing the jaws to close evenly without tilting I may
employ vertical rods N N preferably fixed to the cross bars E, these rods are
carried up at either side of the centre bar J and act as guides for such centre
bar to work in so that as the jaws are opened and the centre bar is drawn down
by the action of opening, it slides between the guide bars N N which keep it
straight and prevent the jaws from tilting.
For the purpose of ensuring the bucket filling itself I may employ weights O
fixed on the cross bars E E or in any other suitable place, with these weights the
bucket is very heavy and when the jaws are closed by the levers G G, the weight
of the whole is so heavy that the jaws are prevented from opening until the levers
are released by the chains L L operating and opening them.
For the purpose of preventing the chains L L from raffling or mixing, I may
employ a bar Prunning over the centre and fastened in any suitable manner, but
preferably to the tops of the vertical rods N N, the bar P having enlarged
parts R with holes for the chains L L and M to pass through to keep them
separate and thus prevent them getting mixed.
The action is as follows: When dredging the bucket A is attached to the
crane by the chains Land M in the usual manner, when lowering the bucket A,
the cbain M attached to the centre bar or bow J connecting the levers H H is run
slack, the chains attached to the eyelets K K the outside of the jaws are
tightened and draw the jaws apart, opening them outwards on account of them
being hinged at their inner corners; when the bucket is being drawn up the
chain M attached to the centre bar J is drawn tight drawing the levers G G
together which in turn close the jaws, such jaws as they close scoop up the sand
retained in the bucket as it is drawn up, the weights O preventing the jaws from
opening and the guide rods N N preventing the bucket from tilting.
Having now particularly described and ascertained the nature of this inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. Constructing grabs or buckets for dredging, with the two jaws hinged at the
top to one two or more bars which act as their pivots, and allow them opening to a
wider extent than heretofore, substantially as shown and described.
2. Constructing grabs or buckets for dredging with the two jaws hinged at the
top to one, two or more bars, and having chains attached to the jaws for the

page_text: purpose of drawing them open, and levers for closing them in the manner and for
the purposes substantially as shown and described.
3. A grab or bucket for dredging purposes consisting of two jaws pivotted or
binged at D to cross-bars E, E, and pivotted at their inner top corners to
levers GG, which are in turn pivotted to levers H H, which are connected to
cross-bar J, such bar preferably working in guides N N, chaius L L, being
employed for opening the jaws and bar P to carry the chains, weights OO being
employed if necessary, the whole being constructed in the manner and for the
purposes substantially as shown and described.
1000
JOHN E. WALSH,
Savile Street, Hull, and Crossley Street, Halifax,
Patent Agent for the Applicant.
JOHN E. WALSH,
Savile Street, Hull, and Crossley Street, Halifax,
Patent Agent for the Applicant.