IMPROVEMENTS IN APPARATUS FOR RAISING AND LOWERING WEIGHTS AND FOR REDUCING SPEED
Year: 1870

page_text: LETTERS PATENT to Jonathan Pickering, of Stockton-on-Tees, in the
County of Durham, Engineer, for the Invention of "IMPROVEMENTS
IN APPARATUS FOR RAISING AND LOWERING WEIGHTS AND FOR REDUCING
SPEED."
Sealed the 12th May 1871, and dated the 17th November 1870.
PROVISIONAL SPECIFICATION left by the said Jonathan Pickering
at the Office of the Commissioners of Patents, with his Petition,
on the 17th November 1870.
I, JONATHAN PICKERING, of Stockton-on-Tees, in the County of
Durham, Engineer, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN APPARATUS FOR RAISING AND LOWERING WEIGHTS AND
FOR REDUCING SPEED," to be as follows:-
My Invention relates to improvements on an apparatus described in
the Specification of Patent granted to me dated A.D. 1867, 3rd April,
No. 990, which improvements are arranged and constructed as
follows:-
To a fixed support an internal toothed wheel is fastened, which wheel
I call a fulcrum wheel. Through a central opening in this fulcrum

page_text: wheel I pass a crank pin or eccentric, which is attached to a driving
wheel or crank handle. Upon this crank pin or eccentric I fit a toothed
pinion wheel which is made to revolve upon this said crank pin or
eccentric. This pinion wheel has fewer teeth than the fulcrum wheel
and the one gears into the other. On one side of the said pinion wheel
is a projection, against either side of which is fitted a sliding piece, and
at right angles to these two is fitted a projecting piece, the whole
resembling the letter H. The cross bar of the H fits into the groove of
the lifting wheel or drum. When I use this arrangement of motion for
a pulley block I use an endless hand chain for the driving wheel and a
single chain for the lifting wheel.
My Invention and improvements herein specified may be applied to
winches, cranes, and hoists, and may also be used for transmitting power
to shaft
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Jonathan Pickering in the Great Seal Patent
Office on the 17th May 1871.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JONATHAN
PICKERING, of Stockton-on-Tees, in the County of Durham, Engineer,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Seventeenth day of November, 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 successors,
give and grant unto me, the said Jonathan Pickering, Her special
licence that I, the said Jonathan Pickering, my exccutors, adminis-
trators, and assigns, or such others as I, the said Jonathan Pickering,
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 APPARATUS FOR RAISING AND LOWERING WEIGHTS AND FOR
REDUCING SPEED," upon the condition (amongst others) that. I, the said
Jonathan Pickering, my executors or administrators, by an instrument

page_text: 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.
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 Jonathan Pickering, do hereby
declare the nature of my said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and
by the following statement:-
My Invention relates to improvements upon an apparatus described
in the Specification of a Patent granted to me, dated A.D. 1867,
April 3rd, No. 990, which improvements are arranged and constructed
as follows:-
To a fixed support an internal toothed wheel is fastened, which wheel
I call a fulcrum wheel. Through a central opening in this fulcrum
wheel I pass a crank pin or eccentric which is attached to a driving
wheel or crank handle. Upon this crank pin or eccentric I fit a toothed
pinion wheel, which is made to revolve upon this said crank pin or
eccentric. This pinion wheel has fewer teeth than the fulcrum wheel,
and the one gears into the other. On one side of the said pinion wheel
is a projection, against either side of which projection is fitted a sliding.
piece, and at right angles to these two sliding pieces is another pro-
jecting piece, the whole resembling the letter H. The cross bar of the
piece fits into the groove of the lifting wheel or drum. When I use
this arrangement of motion for a pulley block I use an endless hand
chain for the driving wheel and a single chain for the lifting wheel.
My Invention and improvements herein specified may be applied to
winches, cranes, and hoists, and may also be used for transmitting power
to shafts.
Having explained the nature of my Invention, I will proceed to
describe the manner in which the same is to be performed, and for that
purpose shall refer to the several Figures on the annexed Sheet of
Drawings.
Fig. 1 is a vertical section of a pulley block. c is a pulley made to
receive a rope or chain. This pulley is connected to the axle i and
eccentric e; on the eccentric is a pinion toothed wheel d which is
allowed to revolve on the eccentric, the teeth of the pinion gears into

page_text: an internal toothed wheel f; on the left side of. the pinion wheel is a
projection, shewn in Fig. 3, against either side of which is fitted a sliding
piece g, and at right angles to these two sliding pieces is fitted a pro-
jecting piece, shewn in Fig. 2, the cross bar projecting piece fits into a
groove of the lifting wheel k. The wheelf is fixed to the framework /
or by friction with a brake surrounding the wheel which can be used
for quick lowering. The other parts shewn in Fig. 1 are of the ordinary
kind belonging to pulley blocks.
Fig. 4 is an elevation, partly in section, of a winch. c is an ordinary
crank handle secured to the spindle i, the eccentric e being fixed to the
spindle carries a pinion toothed wheel d gearing into an internal toothed
wheelf; this wheel fits upon a boss of the frame or support through
which the spindle passes. The sliding piece, Fig. 2, resembling the
letter H may be made of the form shewn on Fig. 5, marked 9, which
will turn the drum and give motion thereto; this connecting piece
may be varied in shape without altering the result. The same letters
indicate the same parts in the whole of the Figures.
Having now described the nature of my Invention, and the manner
in which the same is to be performed, I would have it to be understood
that I claim not one part separately, but what I claim is as follows:-
I claim wheel or lever wheel c and eccentric giving motion to
revolving pinion d gearing into fulcrum wheel f. The pinion d may be
used with internal teeth with wheel f, external teeth having a difference
of teeth in number in the wheels d and f.
I claim driving piece g, shewn in Figs. 2 and 5.
I claim the combination of these parts as applied to winches, cranes,
and hoists, and also for transmitting power to shafts for reducing speed.
In witness whereof, I, the said Jonathan Pickering have hereunto
set my hand and seal, this Fifteenth day of May, in the year of
our Lord One thousand eight hundred and seventy-one.
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