IMPROVEMENTS IN MACHINERY OR APPARATUS APPLICABLE FOR RAISING AND LOWERING WEIGHTS, HAULING, AND OTHER PURPOSES
Year: 1868

page_text: LETTERS PATENT to Alexander Melville Clark, of 53, Chancery Lane,
in the County of Middlesex, Patent Agent, for the Invention of
"IMPROVEMENTS IN MACHINERY OR APPARATUS APPLICABLE FOR RAISING AND
LOWERING WEIGHTS, HAULING, AND OTHER PURPOSES."-A communication
from abroad by Jean Ventouillac and Louis Ventouillac, Boiler
Makers, and Edouard Jau, Banker, all of 13, Boulevart St, Martin,
PROVISIONAL SPECIFICATION left by the said Alexander Melville
Clark at the Office of the Commissioners of Patents, with his
Petition, on the 29th September 1868.
I, ALEXANDER MELVILLE CLARK, of 53, Chancery Lane, in the
County of Middlesex, Patent Agent, do hereby declare the nature of the
said Invention for "IMPROVEMENTS IN MACHINERY OR APPARATUS APPLICABLE
FOR RAISING AND LOWERING WEIGHTS, HAULING, AND OTHER PURPOSES," to be
as follows:-
This Invention relates to a combination of parts constituting an
improved apparatus for producing power by means of levers.

page_text: One example of the Invention is represented in the accompanying
Drawings, Figure 1 of which shows a side view of the apparatus applied
to a windlass; Figure 2, a plan of same with the barrel of windlass
removed, and Figure 3 a front view of the windlass. The same reference
letters apply to these three Figures.
A, wood or metal framing carrying the various parts of the apparatus ;
B, crank handle or handles for imparting motion to the apparatus by
hand, for which may be substituted wheel driving gear B¹; C, C, C,
friction rollers mounted loosely on the triple cranked shaft C¹, each
of the cranks supporting a lever D. The levers D are provided
with plates E carrying weights, the position of which is adjusted
according to the weight to be raised or power to be produced. Each
lever D is further provided with a catch, which catches in the example
shown are caused to act on ratchets fixed on shaft G. It will be
understood that these levers are made of the required length to suit
the power to be produced, and may also be varied in number, the
cranks C¹ being increased in proportion. G shaft on which are keyed
the three ratchets and provided at each end with the toothed gearing
or chains for imparting motion to drum H, either for raising or lowering
the weights or otherwise; H, drum or barrel on which the cord or
chain used for the above purpose is wound; I, shaft on which is fixed
the barrel brake and gearing on either side which may be used for
raising or lowering by the aid of screw disconnecting gear on the ends
of the shaft; J, brake wheel, the action of which is regulated by a crank
handle K. This machine is applicable for producing power in various
cases, such as for hauling agricultural machinery, also to pumps of all
kinds, and generally in connection with steam, hydraulic, or other
power.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Alexander Melville Clark in the Great Seal Patent
Office on the 23rd March 1869.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ALEXANDER
MELVILLE CLARK, of 53, Chancery Lane, in the County of Middlesex,
Patent Agent, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-ninth day of September, in the

page_text: year of our Lord One thousand eight hundred and sixty-eight, in the thirty-
second year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Alexander Melville Clark, Her special licence
that I, the said Alexander Melville Clark, my executors, administrators,
and assigns, or such others as I, the said Alexander Melville Clark, 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 MACHINERY OR APP BATUS APPLICABLE FOR RAISING AND LOWERING WEIGHTS,
HAULING, AND OTHER PURPOSES," a communication to me from abroad by
Jean Ventouillac and Louis Ventouillac, Boiler Makers, and Edouard Jau,
Banker, all of 13, Boulevart St. Martin, Paris, upon the condition (amongst
others) that I, the said Alexander Melville Clark, my executors or adminis-
trators, 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 per-
formed, 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 Alexander Melville Clark, 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, reference being had to the Sheet of Drawings
hereunto annexed, and to the letters and figures marked thereon (that
is to say):
This Invention relates to a combination of parts constituting an
improved apparatus for producing power by means of levers.
One example of the Invention is represented in the accompanying
Drawings, Figure 1 of which shows a side view of the apparatus applied
to a windlass; Figure 2, a plan of same with the barrel of windlass
removed, and Figure 3 a front view of the windlass. The same reference
letters apply to these three Figures.
A, wood or metal framing carrying the various parts of the apparatus ;
B, crank handle or handles for imparting motion to the apparatus by
hand, for which may be substituted wheel driving gear B¹; C, C, C,
friction rollers mounted loosely on the triple crank shaft C', cach of

page_text: the cranks supporting a lever D. The levers D are provided with
plates E carrying weights, the position of which is adjusted according
to the weight to be raised or power to be produced. Each lever D
is further provided with a pawl or catch F which catches in the
example shown are caused to act on ratchets G keyed on shaft G.
It will be understood that these levers are made of the required length
according to the power to be produced and may also be varied in number,
the cranks C¹ being increased in proportion. G', shaft on which are
keyed the three ratchets G and provided at each end with the toothed
gearing or chains for imparting motion to drum H either for raising
or lowering weights or otherwise; H, drum or barrel on which the cord
or chain used for the above purpose is wound; I, shaft on which is
fixed the barrel H, as also a brake wheel and gearing on either side
which may be used for raising or lowering by the aid of screw dis-
connecting gear on the ends of the shaft; J, brake wheel, the action
of which is regulated by a crank handle K. This machine is applicable
with or without the ratchets G for producing power in various cases,
such as for hauling agricultural machinery, also to pumps of all kinds,
and generally in connection with steam, hydraulic, or other power.
Having described the nature of this Invention, and the manner of
performing the same, I declare that what I claim as the Invention to
be protected by the herein-before in part recited Letters Patent is, the
combination of the crank shaft C', friction rollers C, levers D, and
pawls F in the manner shown and described, forming an apparatus for
producing power by means of levers applicable for various purposes.
In witness whereof, I, the said Alexander Melville Clark, have
hereunto set my hand and seal, this Twenty-third day of March,
in the year of our Lord One thousand eight hundred and sixty-
nine.
Witness,
JAMES DAISH,
53, Chancery Lane,
London.
A. M. CLARK. (L.S.)