IMPROVEMENTS IN PULLEY BLOCKS FOR RAISING AND LOWERING SACKS AND OTHER WEIGHTS
Year: 1870

page_text: LETTERS PATENT to Thomas Moore, of South Stockton-on-Tees, in
the County of York, Engineer, and Charles Arthur Head, of
the Teesdale Iron Works, Stockton-on-Tees, Engineer, for the
Invention of " IMPROVEMENTS IN PULLEY BLOCKS FOR RAISING AND
LOWERING SACKS AND OTHER WEIGHTS."
Sealed the 7th March 1871, and dated the 28th September 1870.
PROVISIONAL SPECIFICATION left by the said Thomas Moore and
Charles Arthur Head at the Office of the Commissioners of
Patents, with their Petition, on the 28th September 1870.
We, THомAS MOORE, of South Stockton-on-Tees, in the County of
York, Engineer, and CHARLES ARTHUR HEAD, of the Teesdale Iron
Works, Stockton-on-Tees, Engineer, do hereby declare the nature of
the said Invention for "IMPROVEMENTS IN PULLEY BLOCKS FOR RAISING AND
LOWERING SACKS AND OTHER WEIGHTS," to be as follows:-
This Invention has for its object improvements in pulley blocks for
raising and lowering sacks and other weights. For this purpose we
construct a pulley block with a small chain wheel, over which is passed
a chain, to either end of which the sack or weight to be raised or lowered
is attached. The small chain wheel has cast concentric with it at one

page_text: of its sides an internal toothed wheel, into which gears a pinion cast at
the side of and concentric with a driving wheel, over the periphery of
which an endless driving chain or cord is passed. The driving wheel is
of considerably larger diameter than the chain wheel, and when the
driving wheel is turned by pulling round the endless driving chain or
cord, a revolving motion is imparted at a reduced speed to the chain
wheel and to the lifting chain which passes over it. The pins or axes
upon which the chain wheel and the driving wheel revolve are formed
in one piece, they being connected one with the other by a central
crank piece. The outer ends of the pins or axes are passed through the
side bars of the pulley frame and are secured by nuts. The pulley frame
as is usual is provided with a hook by which it can be suspended when
desired.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Thomas Moore and Charles Arthur Head in the
Great Seal Patent Office on the 28th March 1871.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, THOMAS
MOORE, of South Stockton-on-Tees, in the County of York, Engineer,
and CHARLES ARTHUR HEAD, of the Teesdale Iron Works, Stockton-
on-Tees, Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-eighth day of September, in
the year of our Lord One thousand eight hundred and seventy, in
the thirty-fourth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto us, the said Thomas Moore and Charles
Arthur Head, Her special licence that we, the said Thomas Moore
and Charles Arthur Head, our executors, administrators, and assigns, or
such others as we, the said Thomas Moore and Charles Arthur Head,
our 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 PULLEY BLOCKS FOR RAISING AND LOWERING SACKS AND
OTHER WEIGHTS," upon the condition (amongst others) that we, the said
Thomas Moore and Charles Arthur Head, our executors or adminis-

page_text: trators, by an instrument in writing under our or their hands and seals,
or under the hand and seal of one of us or them, 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 we, the said Thomas Moore and Charles
Arthur Head, 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, that is to
say:
-
This Invention has for its object improvements in pulley blocks for
raising and lowering sacks and other weights. For this purpose we
construct a pulley block with a small chain wheel, over which is passed
a chain, to either end of which the sack or weight to be raised or lowered
is attached. The small chain wheel has cast concentric with it at one
of its sides an internal toothed wheel, into which gears a pinion cast at
the side of and concentric with a driving wheel over the periphery of
which an endless driving chain or cord is passed. The driving wheel is
of considerably larger diameter than the chain wheel, and when the
driving wheel is turned by pulling round the endless driving chain or
cord a revolving motion is imparted at a reduced speed to the chain
wheel and to the lifting chain which passes over it. The pins or axes
upon which the chain wheel and the driving wheel revolve are formed
in one piece, they being connected one with the other by a central
crank piece. The outer ends of the pins or axes are passed through
the side bars of the pulley frame and are secured by nuts. The pulley
frame as is usual is provided with a hook by which it can be suspended
where desired.
In order that our said Invention may be most fully understood and
readily carried into effect we will proceed to describe the Drawings

page_text: a, a, is the frame of the pulley block, it is provided with a hook a¹,
by which it may be suspended from any suitable support; b, b, is a
cranked axis or pin fixed in this frame; c is the chain wheel over which
the lifting and lowering chain d is passed, it turns freely on the fixed
axis or pin b; e is a ring of internal teeth cast in one piece with the
chain wheel ; f is a pinion gearing with the ring of internal teeth e,
the pinion falso turns freely on the axis or pin b, and the driving
wheel g is formed in one piece, with it an endless band cord or chain
for actuating the apparatus is passed over this wheel.
Having thus described the nature of our Invention, and the manner 1
of performing the same, we would have it understood that we claim
the construction of pulley blocks for raising and lowering sacks and
other weights as described.
In witness whereof, we, the said Thomas Moore and Charles
Arthur Head, have hereunto set our hands and seals, this 1
Twenty-fourth day of March, in the year of our Lord One
thousand eight hundred and seventy-one.