Hoisting Apparatus.
Year: 1894

page_text: Date of Application, 18th Sept., 1894-Accepted, 20th Oct., 1894
Hoisting Apparatus.
I LOUIS ROSENFELD of No. 39 Broadway in the City County and State of
New York U.S.A. Shipping and Commission Merchant and Ship Owner 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:-
My invention relates to that class of hoisting devices in which the hoisting rope
or runner lifts the suspended load vertically, a distance sufficient to allow it to clear
the hatch or other wall or casing surrounding the material or in which the latter is
confined, said load being then pulled or guided sidewise or out-board by means of
attached lines, manipulated by hand.
My invention consists in a doubled hoisting rope or cable directed from its bight
to the load receptacle by guides, one on each side of the source of material to be
hoisted, said rope or cable having applied to its bight a hauling block, and provided
with an obstruction in one of its sides whereby said side is arrested in its movement
at a predetermined point, while the other side is still moving, as I shall hereinafter
fully describe.
The object of my invention is to provide simple and effective means for hoisting
the load preliminary to clear its immediate surroundings, and then for automatically
and by the same continuous movement of the hoisting power and devices, hoisting
it out-board or sidewise to the point at which it can be lowered away, or its load
dumped.
Referring to the accompanying drawings for a more complete explanation of my
invention:
The figure is a general view of my apparatus, the dotted lines showing the second
position of the bucket.
A represents any suitable receptacle or place in which the material to be hoisted
is confined or lies.
For the sake of example it may be considered a vessel's hold, and the opening a
may be regarded as the hatch.
B is a suitable upright support, standard or mast, from which, above, extend on
each side, the arms or gaffs or yards C and C¹, the former being on the left of the
drawing, and the latter on the right thereof.
At the extremity of arm C are the blocks D, and at the extremity of arm C' is
the block D¹.
E is the hoisting rope or cable. In its bight is a hauling block F, to which the
line G extending to the hoisting engine (unnecessary herein to show) is secured.
From block F the rope or cable E extends over one of the blocks D and thence
down, and its end is secured to the tub or bucket H. It also extends from block F
to and over the other block D, thence to and over the block D' and thence down to
the tub or bucket H to which its other end is secured.
At any suitable point in either side or portion of rope E, preferably in that
portion of said rope which lies between the bucket or tub and the extremity of
either arm, gaff or yard, I place any kind of an obstruction, O, which will not pass
the block in said arm, gaff or yard, or which by contact with any fixed part, will
stop the movement of said rope. This obstruction may be of any character such
as a strong cross piece, or simpler still, a knot in the rope will answer.
The operation is as follows:-
:―
By hauling in on the engine line G, the block F will haul in both sides of rope
or cable E, and as the blocks D and D¹ are equidistant from the tub or bucket, and

page_text: the winding up of the rope or cable E is equal on each side, the tub or bucket will
rise vertically, and this continues until the hatch is cleared, and such height as may
be desired is gained. Then the obstruction O coming in contact with block D
arrests the further hauling in of that side of the cable or rope, but as the other side
is still free and being hauled in, the tub or bucket rises diagonally in the direction
of the extremity of arm or gaff C, and its speed is of course doubled, because of the
stoppage of the obstructed side of the rope or cable; this continues until sufficient
siding is gained to lower away, or dump the load. This whole operation is
automatic and continuous and by the use of an apparatus of this kind the services
of men usually employed to manipulate the side directing lines, are dispensed
with.
By placing the obstruction at different points with relation to the place at which
it will be arrested the amount of the vertical hoist of the load may be accurately
determined to suit circumstances, and as little or as great perpendicular movement
may be given before swinging out-board as may be desired, according to the
surroundings.
Having now particularly described and ascertained the nature of my inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. A hoisting apparatus consisting of guides, one on each side of the source of
material to be hoisted, a doubled hoisting rope or cable directed from its bight to
and by said guides and having its ends attached to the load receptacle, said rope or
cable having in one of its sides an obstruction adapted to arrest the movement of
said side at a predetermined point while the other side is still moving, and a
hauling block in which the bight of said rope or cable freely runs, substantially as
described.
2. A hoisting apparatus consisting of a central support, arms, yards or gaffs
extending therefrom on each side, guide blocks carried by the arms, yards or gaffs
at points equidistant on each side of the central support, a double hoisting cable or
rope directed by the guide blocks and connected with the load receptacle, said
cable or rope having an obstruction in one of its sides, to arrest the movement of
said side at a predetermined point, and a hauling block fitted to the bight of said
rope or cable, substantially as described.
Dated this Eighteenth day of September 1894.