IMPROVEMENTS IN CRANES OR APPA- RATHSES FOR RAISING AND LOWERING WEIGHTS
Year: 1858

page_text: LETTERS PATENT to Richard Archibald Brooman, of 166, Fleet Street, in
the City of London, E.C., Editor of the Mechanics' Magazine, and
Patent Agent, for the Invention of "IMPROVEMENTS IN CRANES OR APPA-
RATHSES FOR RAISING AND LOWERING WEIGHTS."-A communication from
Sealed the 9th August 1858, and dated the 13th April 1858.
PROVISIONAL SPECIFICATION left by the said Richard Archibald Broo-
man at the Office of the Commissioners of Patents, with his Petition,
on the 13th April 1858.
I, RICHARD ARCHIBALD BROOMAN, of 166, Fleet Street, in the City of
London, E.C., Editor of the Mechanics' Magazine, and Patent Agent, do
hereby declare the nature of the said Invention for "IMPROVEMENTS IN CRANES
OR APPARATUSES FOR RAISING AND LOWERING WEIGHTS," (communicated to me
by Jean Baptiste Borde, a foreigner residing abroad), to be as follows:-
These improvements were designed chiefly with the view to the employ-
ment of cranes, worked by steam, in the construction of buildings, but they
may be employed for hoisting and lowering purposes generally.
Upon a suitable bed, provided with wheels or not, a steam engine and boiler
are mounted together with an upright frame, upon which the lower end of the
jib is supported by a cross bar, in such manner that the outer end of the jib
may be made to protrude more or less outwards from the upright frame, for
the purpose of placing a block or other article after having been raised at any

page_text: distance from the frame limited by the length of the jib. The rope or chain
for raising the weight, passes round a windlass driven by the engine. A rope
or chain for allowing the outer end of the jib to be projected is attached
thereto, and passing over a pulley in the upper part of the upright frame,
descends down to the bed, from whence it is worked by the engine or
otherwise.
Where weights are required to be raised to a great height and to be
deposited at a considerable distance from the upright frame, then the jib is
connected to the top of an upright mast or frame at or near the centre of the
jib, by such a joint or joints, if desired, as will allow it to move all round the
mast as upon a centre; in this case the outward motion of the upper end of
the jib is regulated by a rope connected to the lower end thereof, and brought
over pulleys down to the bed.
Another arrangement consists in providing one upright frame or mast with
two jibs at different elevations, and projecting from different sides. Where
two cranes are required to be used together, one steam engine may be made
to work both.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Richard Archibald Brooman in the Great Seal Patent Office
on the 13th October 1858.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, RICHARD
ARCHIBALD BROOMAN, of 166, Fleet Street, in the City of London, E.C.,
Editor of the Mechanics' Magazine, and Patent Agent, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Thirteenth day of April, in the year of our Lord One
thousand eight hundred and fifty-eight, in the twenty-first year of Her reign,
did, for Herself,, Her heirs and successors, give and grant unto me, the said
Richard Archibald Brooman, Her special licence that I, the said Richard
Archibald Brooman, my executors, administrators, and assigns, or such others
as I, the said Richard Archibald Brooman, my executors, administrators, and
assigns, should at any time agree with, and no others, from time to time and
at all times thereafter during the term therein expressed, should and lawfully
might make, use, exercise, and vend, within the United Kingdom of Great
Britain and Ireland, the Channel Islands, and Isle of Man, an Invention for
.." IMPROVEMENTS IN CRANES OR APPARATUSES FOR RAISING AND LOWERING WEIGHTS,"
a communication from Jean Baptiste Borde, upon the condition (amongst

page_text: others) that I, the said Richard Archibald Brooman, my executors or admi-
nistrators, by an instrument in writing under my, or their, or one of their
hands and seals, should particularly describe and ascertain the nature of
the said Invention, and in what manner the same was to be performed, and
cause the same to be filed in the Great Seal Patent Office within six calendar
months next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Richard Archibald Brooman, do hereby
declare the nature of the said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement thereof, reference being had to the Drawings hereunto annexed,
that is to say:-
These improvements were designed chiefly with the view to the employment
of cranes, worked by steam, in the construction of buildings, but they may be
employed for hoisting and lowering purposes generally. Upon a suitable
bed, provided with wheels or not, a steam engine and boiler are mounted
together with an upright frame, upon which the lower end of the jib is sup-
ported by a cross bar, in such manner that the outer end of the jib may be
made to protrude more or less outwards from the upright frame, for the purpose
of placing a block or other article after having been raised at any distance from
the frame, limited by the length of the jib. The rope or chain for raising the
weight passes round a windlass driven by the engine. A rope or chain for
allowing the outer end of the jib to be projected is attached thereto, and
passing over a pulley in the upper part of the upright frame descends down to
the bed, from whence it is worked by the engine or otherwise.
Where weights are required to be raised to a great height, and to be
deposited at a considerable distance from the upright frame, then the jib is
connected to the top of an upright mast or frame at or near the centre of the
jib by such a joint or joints, if desired, as will allow it to move all round the
mast as upon a centre; in this case the outward motion of the upper end of
the jib is regulated by a rope connected to the lower end thereof, and brought
over pulleys down to the bed.
Another arrangement consists in providing one upright frame or mast with
two jibs at different elevations, and projecting from different sides. Where
two cranes are required to be used together, one steam engine may be made
to work both.
The first of the arrangements before described is illustrated in Figures 1
and 2, Sheet 1, of the Drawings hereunto annexed; Figure 3, Sheet 1,
illustrates the second arrangement, which is a modification of the first. In
these three Figures, a is the frame of the apparatus resting on the platform b,

page_text: which is mounted on the toothed wheels e. These wheels are driven by the
pinions g, g', and run on the rails f. The pinions g, g', are driven by the
wheel h, which again is driven by the engine, of which i is the boiler. This
locomotive is furnished with a chimney k, safety valve l, fly wheel m, and all
other needful and ordinary appurtenances. By the side of the boiler is the
barrel n, on which is wound the rope or chain o, which passes over the
pulleys p, q. The pulley p is fixed at the end of the jib r, and the pulley q is
fixed to the cross piece t. The jib r turns about the pin at t¹, as desired.
v, v, are steps by which workmen may ascend, if necessary, to the cross
piece t.
If materials have to be raised to a greater height than a jib like that before
described could be conveniently employed to reach, then the arrangement
shewn in Figure 3, Sheet 1, is adopted. x then becomes the centre about
which the jib turns. The remaining features of this arrangement resemble
those already described in reference to Figures 1 and 2.
The third arrangement is illustrated in Figure 4, Sheet 2, of the annexed
Drawings. Here the cranes are not transportable, but two of them may be
disposed near the walls of a building, and worked together by a single engine
connected immediately with one of them, and by means of chains or ropes
with the other, as shewn in the Figure. On the mast A are supported the two
jibs B, C, which may be fixed at will at any suitable heights, and worked in
the manner indicated in the Figure.
And having now described the nature of the said Invention, and in what
manner the same is to be performed, I declare that I claim the construction
of cranes or apparatuses for raising and lowering weights, and the operation of
the same by means of a steam engine, essentially as herein-before described,
and illustrated in the Drawings hereunto annexed.
In witness whereof, I, the said Richard Archibald Brooman, have here-
unto set my hand and seal, this Thirteenth day of October, One
thousand eight hundred and fifty-eight.