Improvements in and relating to Cranes and similar Machines.
Year: 1899

page_text: Date of Application, 26th June, 1899
Complete Specification Left, 26th Mar., 1900-Accepted, 12th May, 1900
PROVISIONAL SPECIFICATION.
Improvements in and relating to Cranes and similar Machines.
We, EVAN DAVIES, of The Twyn, Newbridge, near Newport, Engineer, and
JOSHUA JONES, of 18, Cyril Street, Corporation Road, Newport, Foreman Smith,
both in the County of Monmouth do hereby declare the nature of this invention
to be as follows:-
of
This invention relates to cranes and similar machines used for the purposes
dredging, raising water, soil, or other material, which it is required to discharge
from the bucket or scoop by means of which it is raised or moved or transferred;
and the object of the invention is to provide a crane or similar machine to effec-
tively accomplish this purpose.
The invention consists of a crane or machine in which the rope or chain which
operates to overturn and empty the bucket or scoop is passed round a sliding
pulley block which is moved upon the movement of a similar sliding pulley block
which is operated on the winding of the crane barrel or winding drum; the first
pulley block being, however, capable of being arrested by means of a stop; the
other pulley block moving so that the bucket is overturned and emptied on the
first pulley block being thus arrested. The invention further consists in details
of construction hereafter described as applied.
In carrying the invention into effect in the provision of a crane for the purpose
of raising coal or sand or other loose material and transferring it to some other
place we provide a crane pillar frame firmly supported at its base so as, if neces-
Bary, to be capable of being turned round upon a journal bearing, its upper
extremity being likewise held within a fixed bearing and within or upon the
upright pillar of the frame longitudinal slots or grooves are suitably formed
within which two pulley blocks may be guided to pass vertically upward or down-
ward. The pulley upon one block has passing round it a chain the extremity of
which is secured to the upper part of the pillar of the crane frame, while the other
end of the chain passes round the pulley and over another situated at the upper
part of the crane frame, thence outwardly along the laterally extending arm and
downwardly to support the loop or arms by means of which the bucket or scoop
is pivotally held. The second guiding slots or grooves are arranged in proximity
to the first and guide a pulley block whose pulley has passing round it a chain
or rope whose one extremity is similarly fixedly secured at the upper part of the
pillar frame, while its other extremity passes round a pulley provided in the
upper part of the pillar frame and then passes outwardly and around a further
pulley situated at the extremity of the arm of the crane and supports an arm
having connections with the lower part of the bucket or scoop by means of which
the lower part may be held stationary to permit of the bucket or scoop being over-
turned upon the supporting loop or arms being lowered. The first pulley block
is caused to lift the bucket or receptacle by having a chain anchored thereto which
is secured upon a winding barrel provided at the lower part of the pillar frame,

page_text: the bucket or receptacle being lowered by its own weight and its downward move-
ment effecting the upward movement of its pulley block. In.uplifting the bucket
or scoop the chain and tackle by means of which the bucket or scoop is overturned
are likewise carried upward, this being effected by means of a connection from
one pulley block to the other, the connection being such as an arm arranged upon
the first block on each side which engage stops upon the second.
The bucket or scoop is lowered by its own weight, and, in lowering, à corre-
sponding upward movement of each of the pulley blocks is effected, but, for the
purpose of overturning the bucket or scoop, the upward movement of the second
pulley block, by means of which the overturning tackle is operated, is arrested
by means of a stop suitably provided for the purpose, thereby holding the chain
connected therewith stationary. The movement of the chain which supports the
bucket or scoop still continues and permits of the bucket being overturned to
empty its contents.
The stop by means of which the second pulley block is arrested may be rendered
adjustable and may be caused to engage or disengage with projections provided
upon the pulley block by such means as a cord passing round a pulley which
in turn is passed downwardly to a handle situated in such a position upon the
pillar frame as to be within easy access of the person operating the crane or
machine, such handle being caused to disengage the stop, the stop being caused
normally to be in its operative position by reason of its weight or a spring suit-
ably applied.
The bucket is supported in the loop or carrying arms at its upper part upon
pivots or pins and its backward movement is prevented by means of a stop or
stops which at the same time serve to steady the bucket or scoop when in use.
The chains or links by means of which the bucket or scoop is overturned are
suitably guided within slots provided in brackets or lugs formed upon or secured
to the carrying loops or arms, while similarly the supporting shackle of the
overturning tackle is guided from the main supporting chain by means of a loop
or eyelet provided thereupon.
It will be of course understood that we do not limit the application of our
invention to any particular form of crane or winding gear, nor to any particular
power for effecting the winding, as it obvious that we may use any power fo: the
purpose, such as hand power, steam, hydraulic, electrical or other power.
Dated this 26th day of June 1899.
MARKS & CLERK,
18, Southampton Buildings, London, W.C.,
13, Temple Street, Birmingham, and
25, Cross Street, Manchester, Agents.
COMPLETE SPECIFICATION.
Improvements in and relating to Cranes and similar Machines.
We,' Evan · DAVIES, of The Twyn, Newbridge, near Newport, Engineer, and
JOSHUA JONES, of 18, Cyril Street, Corporation Road, Newport, Foreman Smith,
both in the County of Monmoutli 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 cranes and similar machines used for the purposes of
dredging or raising water soil or other material, which it is required to dischargé
from the bucket or scoop by means of which it is raised or moved or transferred,
..
1

page_text: nd the object of the invention is to provide a crane or similar mechanism to
ffectively accomplish the discharge of material dredged
or raised.
The invention consists of a crane or machine in which the rope or chain which
perates to overturn and empty the bucket or scoop is passed over guide pulleys
nd round a sliding pulley block, which is moved downward by the operation of
similar sliding pulley block operated by the winding of the crane barrel or wind-
ng drum. The first mentioned sliding pulley block is capable of being arrested
when moving upward by means of a stop, the other pulley block moving so that
the bucket is overturned and emptied on the first pulley block being thus arrested.
The invention further consists in details of construction hereafter described.
a crane pillar frame within
In carrying our invention into effect we provide
or upon which longitudinal slots or grooves or other guides are suitably formed
within which sliding pulley blocks may be suitably guided to pass as required.
The pulley upon one sliding block has passing around it a chain, one extremity
of which is secured to the upper part.of the pillar, while the other end of the
chain passes over guide pulleys, suitably placed, to the bucket support by means
of which the bucket or scoop is pivotally held.
Another sliding pulley has a chain passing round it one of whose extremities
is fixed to the frame while the other end passes over guide pulleys to support a
hook which has connections with the lower part of the bucket or scoop by means
of which the lower part may be held stationary to permit of the bucket or scoop
being overturned upon the bucket support being raised.
The first mentioned pulley block is caused to lift the bucket by having a chain
one of whose ends is anchored to the block and the other end secured upon a
winding barrel provided in some suitable place. In uplifting the bucket or scoop
the chains and tackle, by means of which the bucket or scoop is overturned, are
likewise carried upward, this being effected by means of a connection from one
pulley block to the other.
The bucket or scoop is lowered by its own weight; and in lowering a corre-
sponding upward movement of each of the sliding-pulley blocks is effected; but,
for the purpose of overturning the bucket or scoop, the upward movement of the
second or tilting pulley block is arrested by means of a suitable stop, thereby
holding the tilting chain stationary.
applied to a portable crane is illustrated
One modification of our invention as
5 in the accompanying drawings, in which:
0
Figure 1 is an elevation of a crane showing our arrangement for turning over
the bucket.
Fig. 2 is a diagram shewing the blocks, chains and bucket in the position ready
for upsetting the bucket.
Figure 3 is a diagram shewing the mechanism with the bucket upset.
to a swivel-
We employ a crane pillar frame a firmly supported at its base
ling frame c mounted on a carriage d. The upper extremity of the crane pillar
frame is supported by tie rods e to the swivelling frame c and in this pillar
frame a are two slots f and arranged parallel to each other so that the sliding
15 pulley blocks h and I may slide along the slots f and freely. The pulley upon
the sliding block 7 sliding in slot f has passing round it a chain m, one extremity
of which is secured to the upper part of the pillar a at n by some suitable means.
The other end of the chain m passes round a guide pulley o to the extremity of the
arm of the frame a over another guide pulley and thence down to carry the
50 bucket support 9 which has two arins g with suitable slots to guide the chains
Another sliding
by means of which the bucket & is pivotally supported at r.
block working in the groove has a chain & passing round it, one of whose
extremities is fixed at while the other end passes over guide pulleys u and w
to support a hook which carries a yoke piece 15 and two tilting chains z which
55 are connected to the lower part of the bucket at 16 by any suitable means.
T
The hook or shackle has an army which by suitable contact with the chain m
guides the chains and the said hook or shackle x.

page_text: In order to lift the bucket or scoop & which has a pin or pins 17 to steady it,
the pulley block 7, which has the lifting rope or chain m round it, is caused to
move downward in the slot f by means of a chain 3 wound round a winding
drum 4, which is actuated by a suitable steam engine 5 mounted on a swivelling
frame c, thus effecting the raising of the bucket or scoop k.
The pulley block has an arm or arms 6 which as the block moves down-
ward, as hereinbefore described, engage with a pin or pins 7 in the block h, thus
causing the block h to descend with the block and so preventing the chain s
from becoming inconveniently slack as the bucket or scoop k rises.
Assuming the bucket or scoop k to be raised as high as required it is now desired
to upset it and discharge its contents.
In order to accomplish this we provide a stop 8 pivoted at 9 and so arranged
that it can be made to engage with the pin 7 on the block h and thus stop the
upward motion on the said block h.
To effect the engagement of the stop 8 with the pin 7 we fix a rope or chain 20
cne of whose ends is fixed to the stop 8 at 12 by any suitable means and the other
end after passing over guide pulleys 13 near the top of the crane pillar a is
passed downward and fixed to a lever 14; and, by means of this lever which is
worked in connection with a spring and quadrant or other suitable means, the
stop 8 can be put into gear with the pin 7.
Figure 2 shows the relative positions of the blocks and h, the stop 8 and the
bucket just before the stop 8 engages the pin 7.
After the engagement has taken place, the bucket is lowered by its own weight
and in lowering it is tilted about the point 16, the block h remaining fixed while
the block and the bucket h assume the positions shewn in Figure 3 and so
effectively discharge the material.
Having emptied the bucket the block 7 is moved downward and brings the
bucket & into normal position and raises it as herein before described.
The stop 8 may be made adjustable by any suitable means; we sometimes have
a number of holes 18 into which the pin 9 may be put, in order to get the desired
height for tipping but we do not bind ourselves to this manner of adjusting
our stop.
The action of the bucket in releasing depends upon the secure fixing or holding
of the bottom of the bucket while the top position is allowed at the same time
to move downwards.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is―
1-In a crane or other lifting machine, the combination of pulley blocks, sliding
parallel to each other, actuating the tilting and lifting chains, with a stop adapted
to arrest the motion of the tilting chain when the bucket has attained the required
position the tilting chain pulley block being driven during the lifting operation by
an arm attached to the lifting block, substantially as and for the purposes herein-
before described.
2-In a crane or other lifting machine the combination of a sliding block such
as carrying a pulley and an arm or arms such as 6 with a second sliding block
such as carrying a pulley and adapted to be travelled in one direction with the
first mentioned block by means of the said arm and to be arrested in its backward
movement by means of an adjustable stop such as 8 substantially as and for the
purposes described.
Dated this ocu 1