A MACHINE FOR RAISING, LOWERING, AND MOVING HEAVY BODIES
Year: 1800

page_text: KNOW ALL MEN BY THESE PRESENTS, that I, WILLIAM POCOCK,
of the Parish of Leyton, in the County of Essex, Carpenter, have obtained
His Majesty's Royal Letters Patent under the Great Seal of Great Britain,
bearing date at Westminster, the Twenty-third day of April, in the year of
our Lord One thousand eight hundred; and in the fortieth year of the reign of
His present Majesty King George the Third, for an Invention of "A MACHINE
FOR RAISING, LOWERING, AND MOVING HEAVY BODIES."
NOW KNOW YE, that in compliance with a proviso in the said Letters
Patent contained, I, the said William Pocock, do declare that my said Inven-
tion, and the manner in which the same is performed, is described in the
written description following, and the Drawing therein referred to and con-
nected therewith, viz.:-
A cylinder, spindle, or axle A, moveable only on it's axis B, B, is turned or
moved in a frame or box C, C, C, C, by means of a lever or levers, or winch
or winches D, D; which cylinder, spindle, or axle A has made or fixed upon
it two male screws, worms, or threads; the one à right-hand male screw,
worm, or thread E, from one end of the said cylinder, spindle, or axle A to
the center thereof; and the other a left-hand male screw, worm, or thread F,
from the opposite end of the said cylinder, spindle, or axle A to the center
thereof. To each of which said male screws, worms, or threads E and F, are
fitted and adapted a female screw, nut, or socket G, G. Each of the said
female screws, nuts, or sockets G, G, are fitted into the frame or box C, C, C, C,
in which the said cylinder, spindle, or axle A is contained, and by means of a

page_text: groove or grooves, or by means of their own form being fitted and adapted to
that of the frame or box C, C, C, C, are prevented from turning round in the
said box C, C, C, C, with the said cylinder, spindle, or axle A, but are caused
to approach towards or recede from each other on the said cylinder, spindle,
or axle A in the said frame or box C, C, C, C, by the rotatory motion of the
said cylinder, spindle, or axle A, when turning by one or both of the said
levers or winches D, D. To each of the said female screws, nuts, or sockets G, G,
are attached or connected a line or lines, or chain or chains H, H, H, H,
which said line or lines, or chain or chains H, H, H, H, move through or over a
pulley or pullies; which pully or pullies are placed to direct the line or lines,
or chain or chains H, H, H, H, so as to act upon the body or bodies intended
to be raised, lowered, or moved. And by the action of the said line or lines,
or chain or chains H, H, H, H, moving through or over the pully or pullies,
by the action of the said female screws, nuts, or sockets G, G, as before
described, having bodies of various weights, are raised, lowered, or moved; and
on ceasing to turn the said cylinder, spindle, or axle A, by means of the said
lever or levers, or winch or winches D, D, the body or bodies remain stationary
in whatever position or degree of elevation they may then be.
In witness whereof, I, the said William Pocock, have hereunto set my
hand and seal, this Twentieth day of May, in the fortieth year of the
reign of King George the Third, and in the year of our Lord One
thousand eight hundred
Inrolled the same Twentieth day of May, in the year above written.