IMPROVE- MENTS IN MACHINERY FOR HOISTING AND TRAVERSING HEAVY BODIES
Year: 1884

page_text: I, JOHN MEIKLEJON, of Dalkeith, in the County of Midlothian, North Britain,
Engineer do hereby declare the nature of the said invention for "IMPROVE-
MENTS IN MACHINERY FOR HOISTING AND TRAVERSING HEAVY BODIES," to be as
follows:-
This Invention, which relates to improvements in Machinery for hoisting and
traversing heavy bodies, is a developement of the inechanism or apparatus for
which Lotters Patent were granted to John Meiklejon N° 1402 dated 24th May
A.D. 1871.
:
The object of the present Improvements is to enable one hoisting chain to do the
work of the two chains used in the apparatus described in the Specification filed in
pursuance of the aforesaid Letters Patent; to enable a carcass or other body to be
lifted up and transferred or hung on any one of the hooks at either side of the
hoist, also to enable such carcass or other body to be transferred from a book on
either side to any hook on the opposite side of the apparatus.
The foregoing object is effected by so locating the chain barrel that the hoisting
chain hangs down in the centre line of the mechanism whilst the loops attached to
the rails are lengthened so as to meet or nearly so in the centre of the apparatus.
Dated this fourth day of November 1884.
J. H. JOHNSON, DAY & JOHNSON,
Petitioner's Agents,
115, St. Vincent Street, Glasgow,

page_text: I, JOHN MEIKLEJON of Dalkeith, in the County of Midlothian, North Britain,
Engincer do hereby declare the nature of my said invention for IMPROVEMENTS IN
MACHINERY FOR HOISTING AND TRAVERSING HEAVY BODIES and in what manner
the same is to be performed, to be particularly described and ascertained in and by
the following statement:—
My Invention, which relates to Improvements in Machinery for hoisting and
traversing heavy bodies, is a development of the mechanism or apparatus for which
Letters Patent were granted to me the said John Meiklejon No. 1402 dated
24th May A.D. 1871.
The object of the present improvements is to enable one hoisting chain to do the
work of the two chains used in the apparatus described in the Specification filed in
pursuance of the aforesaid Letters Patent; to onable a carcass or other body to bo
lifted up and transferred or hung on any one of the hooks at either side of the
hoist, also to enable such carcass or other body to be transferred from a hook on
either side to any hook on the opposite side of the apparatus.
The foregoing object is effected by so locating the chain barrel, that the hoisting
chain hangs down in the centre line of the mechanism, whilst the loops attached
to the rails are lengthened so as to meet, or nearly so, in the centre of the
apparatus.
In order that my said Invention may be properly understood and readily carried
into effect, I will now proceed to describe the drawing hereunto annexed.
This Figure of drawing is a transverse section through a range of apparatus
constructed according to my present Invention.
In carrying out my present Improvements, I locate the chain barrel, which is
represented in dotted lines at a, upon the annexed drawing, in such position that
the hoisting chain b, hangs down midway between the joists c. These joists c, are
supported by the main joists d, and brackets e, and are formed with longitudinal
ribs f, which provide for the running thereon of the wheels or rollers g. These
rollers g, and their shafts h, of which only one is represented upon the annexed
.drawing, support the carriage i, which, in its turn, supports the chain barrel a, and
' other connected hoisting tackle A. The loops or links k, and I, which are
suspended from the underside of the joists c, are of such length as enable them
to meet, or nearly meet, midway between the position occupied by them when in
their vertical or normal condition.
Should it be desired to hang a carcass or other body upon either of the loops or
links k, and l, the said carcass or body is raised by the hoisting tackle Apand upon
arriving at the proper height, one of the said loops or links, say the link k, is raised
into the position in which it is represented in dotted lines and made fast to one
side of the hook m. The hoisting tackle A, is then lowered so that the loop or
link k, pivots at its point of suspension, and arrives at its vertical position with the
carcass B, or other load suspended therefrom, the hoisting chain 6, at this time
assuming the position indicated by the dotted line n.

page_text: Should it be desired to transfer the carcass B, from the link k, to the link 6, the
hoisting chain b, is lowered and swung over into the position indicated by the
dotted line n, where it is made fast to the hook m, and raised into the position
shewn at o. The link, is then pivoted over into the position in which it is
represented in dotted lines, and secured to the hook m, from which the link k, is
then disengaged. The hoisting chain b, is then lowered so that the link l, hangs
with its load perpendicularly, the chain b, at this time assuming the position
indicated by the dotted line p.
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
The improvements in machinery for hoisting and traversing heavy bodies, con-
sisting in the chain barrel a, which is mounted in the carriage i, and on the wheels
or rollers g, being arranged in such position as allows of the hoisting chain b,
hanging down midway between the joists c, and their suspended loops or links k,
and 2, all combined and operating substantially as and for the purposes hereinbefore
set forth with reference to the annexed drawing or the mechanical equivalent of all
or any of the parts thereof.