Improvements in Hoisting Apparatus.
Year: 1894

page_text: Date of Application, 1st Feb., 1894-Accepted, 7th Apr., 1894
Improvements in Hoisting Apparatus.
I, GEORGE FRANKLIN JENNINGS, of 12 and 14 Davol Street, in the City of
Fall River, County of Bristol, and State of Massachusetts, United States of
America, Mechanic 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 has reference to improvements in hoisting-devices which are
particularly adapted for use in elevating coal, sand and similar substances from
vessels.
The object of the invention is to so construct a hoisting-apparatus, of the nature
herein described, that it may be readily adjusted above the hatch of a vessel.
Another object of the invention is to simplify the construction and operation of
the device and to reduce the cost of the same.
The invention consists in the peculiar construction of the base of the booms
whereby they are pivoted to a sliding shoe suitably supported.
The invention also consists in the combination with the peculiar pivoted and
shifting-booms, of the trolley-cable secured to the cross-bar of the booms and to
a shifting-support, whereby the upper end of the trolley-cable may be shifted to
correspond with the location of the booms.
The invention also consists in the peculiar combination with the pivoted shifting-
booms and cables, of a trolley-carriage, tackle for elevating a bucket, and a down-
fall for depressing the ends of the boom and bringing a strain on the trolley-cable.
The invention also consists in such other novel features of construction and
combination of parts as will, hereinafter be more fully described and pointed out
in the claims.
Figure 1 represents a side elevation of the improved device, partly in section.
Figure 2 represents a plan view of the booms and the rail in which their
supporting shoe is traversable.
Figure 3 represents an enlarged side view of part of one of the booms, the shoe
and its rail being shown in section.
Figure 4 represents a plan view of the same.
Figure 5 represents a sectional view of the header or cross-beam mounted
between vertical standards and one means of traversably supporting the trolley-
stay.
Figure 6 represents a sectional view of the cross-bar and a portion of one of
the booms, showing the manner in which the cross-bar is pivoted to the ends of the
booms.
Figure 7 represents a perspective view of portions of the hoisting-apparatus to
show the horizontally-supported rail with the shoe movably supported therein
and the booms universally pivoted to the shoe, the outer ends of the booms being
pivoted to the cross-bar.
Similar numbers of reference designate corresponding parts throughout.
The hoisting-apparatus herein described is designed to be erected on a frame-
work located near the edge of a wharf.
In the drawings 5 and 6 indicate a pair of vertical standards, of which any
number can be used depending on the length of the wharf 7 or upon the desired
length of the staging 8, the uprights being suitably braced to each other and to
the next pair if necessary. The staging 8 is supported on cross timbers 9 at any
desired height and is adapted to receive a railway on which cars, or wagons, may
run, above the rear portion of the frame-work is built a horse formed of two
-

page_text: uprights, similar to that marked 10, and a header or cross-beam 11 secured at each
end to one of the uprights, these uprights being braced in any suitable manner,―
surrounding this header 11 is a strap 12 having an eye-bolt 13 and readily
traversable along the header.
Secured across the face of the frame-work is the horizontal boom-rail 14 and in
a groove in this rail is a movable shoe, or block 15, to this shoe is firmly secured
the castings 16 having the ears, or studs, 17 between which the swivel-blocks 18
are pivoted, each of these blocks has an extension 19 to which the metallic-
plates 20-20 are pivoted by a bolt passing through the plates and through a
perforation in the extension. The booms 21-21 are securely fastened at their
inner ends, each between a pair of the plates 20-20, while at their outer ends they
are connected by the cross-bar 22 pivoted to the booms, the booms thus being
adapted to be swung to the right or left so as to rest against the frame-work, or
the outer ends to be elevated or depressed at will, while the shoe 15 may be shifted
along the rail, as desired, to bring the boom-frame over the hatch of a vessel;
is obvious that front plates 14' may be secured to the rail 14 to retain the shoe 15
within the groove of the rail.
The trolley-stay 23 is secured at its lower end to the center of the cross-bar 22
and at its upper end in the eye-bolt 13 of the movable-strap 12, in this eye-bolt
may also be secured a link 24 carrying a tackle-block 25 to receive the hoisting-
tackle.
Midway of the length of the booms are secured the pulley-blocks 26 and similar
blocks 27 are secured to portions of the frame-work below the level of the booms,
through these blocks work the down-falls 28 adapted to depress the outer ends of
the booms and to bring a strain on the trolley-stay.
The trolley-carriage consists of side-frames between which are journaled the
wheels 29 and 30 resting on the trolley-stay, and the pulley 31 depending below
the stay, at the lowest portion of the carriage-frame is secured one end of the
hoisting-tackle 32 which, after passing under the bucket-pulley 33, passes over the
carriage-pulley 31, then over the head-pulley 25 and is then carried to any usual
hoisting-mechanism, the bucket 34 being secured to a depending portion of the
pulley 33.
When the bucket and carriage are in the position shown in dotted lines in
Figure 1 and the tackle 32 is slackened, the weight of the bucket will tend to
carry the carriage downward along the stay 23 until the movement of the carriage
is arrested by the cross-bar 22 or the stop 35, the further slackening of the tackle
will now allow the bucket to descend,-in hoisting, the bucket will first be drawn
upward until it reaches the position shown in solid lines in Figure 1, and the
carriage will then move upward on the trolley-stay.
The strain on the trolley-cable from the weight of the booms is partially taken
up by the side-tackle roved in pulleys secured to the uprights and to the booms,
this tackle also serving as a means for raising the booms to a vertical position when
not in use.
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. In a hoisting-apparatus, in combination, a horizontally-supported rail, a shoe
traversably supported by the rail, booms universally pivoted to the shoe, a cross-
bar pivoted to the outer ends of the booms, and a stay for supporting the same.
2. In a hoisting-apparatus, the combination with a rail, a shoe traversably
supported by the rail, booms pivoted to the shoe, and a cross-bar pivoted to the
outer ends of the boonis, of a longitudinal rail supported above and to the rear
of the boom-rail, a traversable support mounted thereon, a trolley-stay secured
to such support and to the cross-bar of the booms, and a trolley-carriage carried
by the stay.
3. The combination with the grooved-rail 14 secured to a frame-work, the shoe 15

page_text: movable in the grooved-rail, castings 16 having ears 17 secured to the shoe, the
swivel-blocks having extensions 19 pivoted between the ears, the plates 20 pivoted
to these extensions, the booms 21 each secured between a pair of the plates 20, the
cross-bar 22 pivoted to the outer ends of the booms, and a down-fall for depressing
the ends of the booms, of the supports 10, the rail 11 supported between them,
the movable-strap 12 having the eye-bolt 13 mounted on the rail, the pulley 25
supported by the eye-bolt, the trolley-stay 23 secured to the eye-bolt and to the
cross-bar 22, a trolley-carriage movable on the stay, tackle for operating the
carriage, and a bucket adapted to be elevated and lowered by the tackle.
4. The combination with the grooved-rail 14 secured to a frame-work and
extending horizontally, the shoe 15 movable in the groove of the rail, the booms 21
each of which is universally pivoted to the shoe, and the cross-bar 22 pivoted to
the outer ends of the booms, of a stay, secured to the cross-bar, for supporting the
outer end of the booms and adapted to serve as a cable-way, as described.
Dated this 15th day of January A.D. 1894.
GEORGE FRANKLIN JENNINGS.
Signed in presence of--
HENRY J. MILLER.
Haseltine, Lake & Co.,
45, Southampton Buildings, London, Agents for the Applicant.