An Improved Means for Discharging Cargoes and for Coaling on the High Seas.
Year: 1899

page_text: Date of Application, 18th May, 1899
Complete Specification Left, 20th July, 1899-Accepted, 30th Sept., 1899
PROVISIONAL SPECIFICATION.
An Improved Means for Discharging Cargoes and for Coaling on the
High Seas.
I, WILLIAM JOSEPH PITT, of Valparaiso, Thornton Avenue, Chiswick, in the
County of Middlesex, Captain, do hereby declare the nature of this invention to
be as follows:
This invention relates to an improved means for discharging cargoes and for
use in coaling ships on the high seas and has for its object the provision of a
more convenient and economical means than heretofore. In carrying my inven-
tion into practice I provide a winch driven in the usual manner. The said
winch has two barrels or drums on independent shafts having bearings in the
sides of the framework of the winch. The gearings of these barrels or drums are
so arranged that by means of clutches or couplings of peculiar construction one
of the said drums or barrels only rotate at one time. The jib or derrick of the
winch is capable of partial revolution about its bearing, that is to say, by means
of a wire or other rope attached to its upper end which after passing over a
pulley having bearing in a standard raised above the winch to a convenient
height and from thence arranged around one of the barrels or drums it may be
raised or lowered at will and consequently adapted to lower its load at any
desired point. In bearings in the upper end of this said jib or derrick is disposed
a wheel or pulley over which the rope carrying the load is passed which rope then
passes around the other barrel or drum of the winch. To each of the barrels
aforesaid an automatic brake is provided which allows of only one barrel or
drum revolving at one time.
In operation when a load is to be raised the barrel around which the rope
carrying the load is wound is caused to rotate in the desired direction the other
barrel remaining stationary by virtue of the arrangement of the clutch or
coupling aforesaid and also of the automatic brake. When however the load has
been raised a certain distance by this means in order that the said load may not
swing inconveniently, the revolution of the barrel over which the rope carrying
this load is wound is stopped, the load being prevented from falling by means
of the automatic brake aforesaid on the barrel of same. The other barrel is then
put into operation and the jib and load are both raised until the load is over
the hatch or other place wherein it is desired to lower the same.
Under some circumstances when used at sea the standard raised above the
winch may be replaced by the mast the said mast being suitably rigged &
vertically disposed with relation to keel of the vessel. The drum for raising
the jib may be constructed with three or more different diameters over which
independent ropes pass attached to different parts of the jib. I may if desired
do away with one of the drums or barrels and construct the jib with a toothed
segment or semi circle at its lower end which gearing with a pinion provided
assists on a balance principle the operation of the same and also dispenses with
the necessity of the raised standard aforesaid.
T: 0LL
1900

page_text: CUMI LEIM DICITIATION.
An Improved Means for Discharging Cargoes and for Coaling on the
High Seas.
I, WILLIAM JOSEPH PITT, of "Valparaiso," 23, Thornton Avenue, Chiswick, W..
Captain, 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 an improved means for discharging cargoes & for use
in coaling ships on the high seas and has for its object the provision of a more
convenient and economical means than heretofore; and in order that this my
said invention may be the more readily understood and carried into practical effect
reference is hereby made to the accompanying sheets of illustrative drawings
wherein:
-
Fig. 1 represents a side elevational view of my improved apparatus Fig. 2
is a plan thereof. Fig. 3 is a diagrammatical elevational view of a modification
of the invention. Figs. 4, 5 6 & 7 are views of details, while Fig. 8 is a perspective
view shewing a modified form of my invention in actual use upon a ship.
Referring to these drawings wherein like letters of reference indicate corre-
sponding parts throughout the whole of the figures a represents the bedplate of
a winch which is driven in the usual manner. Rising from this bed plate a are
side frames 6 having bearings 1 & 2 in which are mounted on independent
shafts &e two barrels or drums d & d'. On one end of each of these
drums d & dare provided spur wheels e & e¹ the said spur wheels being arranged
on opposite sides of the machine. f is the driving shaft which is capable of
gearing with each of the spur wheels e & e¹ independently by means of clutch
couplings A & B. These said clutch couplings which are of similar construc-
tion consist of the loosely mounted central portion upon
which pinion
teeth glare provided. On each side of this central boss g but separate therefrom
when not in operation are two end pieces h & h¹ which are keyed to the main
shaft but are capable of a sliding movement along same when operated upon
by a lever (not shewn) or the like connected to the connecting bar i which is
arranged with its ends in grooves j in the two end pieces of the coupling.
The inner ends k & of the two end pieces h & h are cut in zigzag fashion to
correspond to the similarly cut ends & of the middle loosely mounted boss g.
When the main driving shaft f is revolving in one direction the end h is caused
to move toward the central portion or boss g until the clutch surface k clutches
or couples with the clutch surface & thus the two portions revolve together &
the pinion teeth gl of the coupling boss meshing with the spur wheels e or el
impart motion to the barrel or drum attached thereto. When the driving shaft is
revolved in the opposite direction the other end of the clutch or coupling is
brought into operation with the boss g. By means of these couplings either of the
drums & may be revolved independently of the other and while one is
revolving the other is held firm by means of an automatic brake (not shewn) of
ordinary construction acting on one of the drums e or e³ provided for the purpose,
one of these brakes is attached to the drum provided on each barrel. The jib
or derrick m of the winch is capable of partial revolution about its bearing m¹.
That is to say that by means of the wire or other rope attached to its end m²
and passed over the pulleys n & n¹ having bearings in the standard o raised a
convenient distance above the machine it may be raised or lowered at will,
according as the rope is wound or unwound on to, or from off, the drum d.
The bearing of the jib or derrick has the same centre as the driving shaft but is
5

page_text: rope.
ot actually on the driving shaft. In bearings in the upper end of this jib or
errick m is disposed a pulley m³ over which the rope carrying the load is
assed and from thence the said rope is wound around the other barrel or
Irum d. In Fig. 8 I have shewn a slight modification of my invention whereby
he standard o is dispensed with and the mast p utilised in its place the rigging
being suitably arranged so as not to prevent the effectual working of the
P and
pparatus. In this case three small pulleys p¹ are arranged on the mast
ropes d³, & passed over them and attached to the jib or derrick at three
lifferent points and from thence arranged around a drum, such as shewn in
Fig. 6, which has three different diameters around which the three ropes ³,
& are arranged. The difference in the diameters of this drum being pro-
portionate to the difference of the lengths of the rope d³, d & d³ from their
respective pulleys to the jib. I may if desirable dispense with one of the
drums d' & d² and utilise a mechanism for raising and lowering the jib consisting
of a semi-circular toothed enlargement m³ provided on the lower end of the jib
with which a pinion f¹ on the driving shaft gears. The barrels or drums employed
are all preferably grooved or fluted (as shewn at Fig. 4) to more evenly take the
In operation when a load is to be raised the barrel d' around which the
rope d carrying the load is wound, is caused to rotate in the desired direction,
the other barrel & remaining stationary on account of the automatic brake before-
mentioned. When however the load has been raised a certain distance by this
means in order that the said load may not swing inconveniently the revolution
of the barrel d¹ is stopped, the load being prevented from falling by means of
The other barrel dis
the automatic brake on the drum e3 of the barrel d¹.
then started & the jib and load are both raised until the said load is over the
hatch or other place where it is desired to lower the same. For use at sea when
the standard o is replaced by the mast p, which must be vertically disposed with
relation to the keel of the vessel, the cargo would be drawn up through the
hatch situated between the mast and the rigging and the jib m would then be
lowered from the position shewn in full lines, over the sale of the vessel on to the
deck of the other vessel lying alongside as shewn by the dotted lines in Fig. 8.
Referring particularly to Fig. 7 I have there shewn an arrangement for hatches
whereby the hatch covers may consist of hexagonal boxes or pontoons q which
can be used for the discharging of cargoes by floating from ship to ship or othe
place desired & when not in use for this purpose can be utilised as hatch covers
fitting within the hatch combings and resting at each end on two of the beams s
on which the deck t is laid.
It will be easily understood that my invention is equally applicable to winches
driven by hydraulic or other power.
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 means for discharging cargoes and for coaling ships on the high seas
consisting of a winch driven by steam hydraulic or other power said winch
having two drums or barrels on independent shafts having bearings in the side
frames of the machine said drums or barrels being separately driven from the
one driving shaft, their operation being governed by the specially constructed
clutch couplings whereby only one of the said barrels revolve at one time the
other being held in check by an automatic brake of ordinary construction, in
combination with the two ropes and a vertically movable jib & fixed standard
raised above the machine, one of the ropes passing around each drum or barrel
& from one drum over the pulley journalled in the top of the jib and from the
other drum around and over the pulleys provided in the upright standard its
end being attached to the upper end of the jib all arranged combined & operating
5 substantially as herein before described & shewn in the accompanying drawings.
2. In means for causing the independent & separate rotation of the winch

page_text: barrels driven from the one driving shaft, the coupling having three separate
portions the middle portion being loosely mounted and the two end portions
being keyed but capable of a sliding movement in either direction, when actuated
by the movement of a connecting bar whereby the clutch surfaces of either end
may be brought into operation with the clutch surfaces of the loosely mounted
central boss on which are provided pinion teeth the whole combined and operating
substantially as hereinbefore described & shewn particularly by Fig. 5 of the
drawings.
3. In means for discharging cargoes & for coaling ships on the high seas the
modified arrangement whereby the upright standard of the winch is dispensed
with & the mast suitably rigged utilised in its place substantially as hereinbefore
described and shewn particularly with reference to Fig. 8 of the drawings.
4. In cargo discharging apparatus of the kind described the means of providing
for the raising & lowering of the jib or derrick consisting of constructing the
said jib or derrick with a semi-circular toothed enlargement at is lower end
adapted to engage with a pinion on the driving shaft substantially as described
and shewn particularly with reference to Fig. 3 of the drawings.
5. In means for raising the jib or derrick of a winch the utilisation of three
independent ropes passing over three independent pulleys and attached to three
points on the said jib, the barrel or drum having three different diameters whereby
the three ropes are all wound or unwound proportionately substantially as herein-
before specified.
Dated this 20th day of Tul., 1900