IMPROVEMENTS IN DREDGING OR EXCAVATING MACHINES
Year: 1884

page_text: PROVISIONA
JAMES PARKER 20 Pendril Street Beverly Road Hull in the County of York,.
Engineer do hereby declare the nature of my invention for IMPROVEMENTS IN
DREDGING OR EXCAVATING MACHINES to be as follows :—
And consist when applied to marine work in arranging a series of digging or
picking tools to which a rotating or reciprocating motion is imparted, upon a frame
or shaft in advance of the ordinary ladder and buckets, so that these tools when in
motion chip shovel or break off portions of the earth to be excavated at each move-
ment, and shovel it into barges or hoppers in the usual way.
When used for Land Operations such as Dock Excavating Railway Cutting
Tunnel boring &. The digging tools or picks to which motion is given, are
attached to an ordinary bucket carried by a crane, or suspended from a jib crane
on the end of a ladder, the movements of such tools being accomplished by gearing
chains or belts from the connection by which such ladder is secured to the crane
post, in this case a hoisting and swinging movement is given to such ladder or
digging frame at the same time that the digging tools are in motion.
This ladder I further construct to carry a delivery belt or chain of buckets, for
disposing of the soil into shoots at the end or either side of the machine or truck
on which such an apparatus is mounted.
The digging tools consist of spades or picks driven by eccentrics or cranks
mounted on a rotating or reciprocating shaft, at the end of the ladder which carries
the buckets when applied to a dredger, from each of which eccentrics or cranks a
lever spade or pick is attached being further held by a suspending rod or link, the
said picks spades or levers, when the shaft to which they are connected by cranks
or eccentrics being in motion, break away or loosen the earth so cause it to fall or
is shovelled by them into the lifting apparatus or buckets.
In place of using suspending rods or links I may employ slots either curved or
straight made in the said eccentric or crank connections to the said levers spades or
picks, these slots slide over studs in such a manner that the points of the picks
spades or levers describe a curve at each movement, and thus break or shovel off
the earth and spoil.
In place of eccentrica or cranks having spades or levers attached, I may use
spikes or rods fastened to a shaft, which when turned or moved, loosens the earth
and causes it to fall into the buckets for delivering or any other convenient form of
apparatus that may be used for conveying the spoil away.

page_text: When convenient I may employ a separate collecting bucket or scoop into which
I cause the digging tools to deliver the spoil being distinct from such tools, and
only used for collecting. But in the case of mounting the said tools upon a bucket
or scoop carried by a crane, the said tools fill the bucket, and swing round with it
to deliver the contents into trucks & alongside.
In working the apparatus when employed for dredging, I employ such a
combination of gearing that the machine is hauled forward at such a speed as
always to ensure the picking or shovelling tools entering fresh work at each move-
ment thereof, and when hoisted or swung round against a bank for land excavating,
the digging tools are hoisted at such a speed to ensure fresh ground being operated
upon at each movement of the machine."
These implements or machines I drive by friction power in all the motions, so as
to obviate all chance of breakage should a large stone or rock be introduced so as
to choke or block up the apparatus.
COMPLEIE DIFLE.
JAMES PARKER 20 Pendril Street Beverly Road Hull Yorkshire Engineer do
hereby declare the nature of my invention for IMPROVEMENTS IN DREDGING OR
EXCAVATING MACHINES and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following stateinent :—
And consist in mounting a set of digging or delving tools upon a frame in front
of the ordinary dredger ladder when used for marine work, but in land operations
such as dock excavating, railway cutting tunnel boring & the digging tools are
mounted upon the lip of a bucket carried by a crane, or suspended from a jib crane
on the end of a ladder, the movement of such digging tools being accomplished by
gearing, chains or belts, from the connection by which such ladder is secured to the
crane post, in this case a hoisting or swinging movement is given to such ladder or
digging frame at the same time that the digging tools are being driven, this
ladder I further construct to carry a delivery belt or chain of buckets if preferred,
for disposing of the spoil into shoots at the end or either side of the machine or
truck on which such an apparatus is mounted.
When used for marine work the weight and carriage of these digging tools are
bourne by the ship, and simply consist of an additional shaft or frame having the
digging or picking tools mounted thereon, in front of an ordinary ladder, these tools
being actuated by gearing from the point of suspension of such ladder, or through
the chain block connections used for hoisting the ladder,

page_text: The digging tools consist of spades or picks driven by eccentrics or cranks,
mounted on a rotating or reciprocating shaft, at the end of the ladder which carries
the buckets when applied to a dredger, from each of which cranks or eccentrics a
spade or pick is connected, being further held by a suspending rod or link, the
said picks or spades when the shaft is caused to revolve break away or loosen the
earth so as to fall or is shovelled by them into the buckets or lifting apparatus.
In place of useing suspending rods, I may employ slots either curved or straight
made in the said eccentrics or crank connections to the spades or picks, to slide over
studs in such a manner that the point of the picks or spades describe a part of a
circle each time the shaft on which they are mounted is caused to revolve, and thus
break or shovel off the earth or spoil, or instead of eccentrics or cranks I may use
spikes or rods fastened to the said shaft, and these spikes or projections when
moved round or revolved loosen the earth and cause it to fall into the buckets for
hoisting, or any convenient form of apparatus that may be used for conveying the
spoil away.
When used for Land Excavating or Railway cutting, Tunnel boring &, I mount
my arrangement of digging or delving tools or picks on one end of a ladder or jib,
such jib conveying the necessary power to work the said digging tools by gearing
straps & from the point of suspension to an ordinary crane post or frame, the said
ladder being further used to convey the spoil from the digging or picking tools
over the top of the said crane post into shoots, from which trucks or carriages can
be filled, or in place of useing the ladder or jib which carries the digging tools as
a means of delivering the spoil; I may employ a separate collecting bucket or
scoop into which I cause the digging or delving tools to deliver their spoil, or
I mount the digging tools upon the mouth of an ordinary bucket carried by a jib
as at present, and drive the digging or delving tools by the aid of belting or chain
gearing and so fill the bucket, and swing the same round to deliver into trucks or
waggons alongside.
In feeding the apparatus when the digging tools or picks are at work, I employ
such a combination of gearing that the dredger is hauled forward one foot or
thereabouts at every revolution of the digging tools or spikes and in the case of
land excavating the digging tools togather with the lifting apparatus for discharging
the spoil, are boisted against the face of the bank at the necessary speed to ensure
the digging or delving tools entering fresh ground at each revolution, say at the
speed of one foot for each rotation of the picks or tools, though I may employ
a separate bucket or scoop for collecting the spoil from the digging tools, which
will be worked distinct from the elevating or swinging of the jib or ladder on
which the digging tools are mounted.
The feed and main gear I drive by friction power, so as to obviate all chance of
breaking the apparatus should a rock or large stone be introduced in such a mauner
as to block or lock the apparatus in such a manner as to pull up the engine and
thus prevent breakage.
For the clearer describing of my invention drawings have been supplied.
Sheet No 1. being an enlarged view of the picking tools driven by cranks. Sheet
No 2. an elevation of truck containing the digging tools and elevating ladder when
used for Land purposes. Sheet N° 3 an elevation of a dredger with digging hend
attached in connection with the bucket or lifting ladder.
The same initials apply to the same parts in each view.
In sheet No 1. Fig 1 shews the section through crank shaft A Fig 2 end view.
A crank shaft carrying digging tools b, having times for entering the ground C,
these digging tools are further connected by the short connecting or suspending
rods e the other ends of these rods being secured or held on shaft f, the ends of
this shaft being carried through the side plates of the machine g are furnished
with pullies h, rounds which the hoisting chain runs i shews the spindle by which
the collecting belt or carrier J for the spoil is driven by the wheels K the crank
shaft A is moved by gearing as shewn at m.

page_text: In Sheet No 2 A is the crank shaft 6 the diggers C the tines, g the side plates,
O is a wearing piece for the soil to be broken against when the diggers are moved,
m the gearing, i the shaft which carries the collecting belt J, h is the hoisting
pullies by which the complete ladder consisting of diggers with the side frames and
collecting belt is hoisted against the face to be worked or operated upon as shewn
at p, on which bank the cut of the implement is shewn at p', the spoil being
carried by the carrier J to the top of the centre post, is delivered into shoots Q,
and from these into the side slides S from which it falls into trucks or as may be
desired.
Sheet No 3 shews the arrangement of digging tools as applied to a dredger,
A crank shaft b digging tools which togather with the lifting or carrying belt or
buckets J is hoisted against the bank pas shewn by means of the chain an pullies h,
the digging tools being operated through the gearing m which is in connection with
the engine on board by bevel or spur gearing.
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
First. The use of digging tools or picks having a revolving, reciprocating, or a
motion combined of these, for excavating or dredging purposes.
Second. The use of such digging delving or breaking off tools for excavating
or dredging mounted upon a frame fitting with a lifting belt or chain of buckets.
Third. The use of digging tools or picks in front of the ordinary ladder and
buckets of a dredger, so as to fill the buckets by the movement of these tools.
Fourth. The mounting of moving digging tools on the lip of an ordinary
collecting bucket so as to fill the same, substantially as described.
Dated this 30th day of April 1885.