A CERTAIN MACHINE WHICH I CALL THE AQUATIC PROPELLER, FOR THE PURPOSE OF GIVING WAY TO SHIPS AND OTHER VESSELS DURING CALMS AND LIGHT WINDS
Year: 1794

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
LYTTLETON, of Mansell Street, Goodman's Fields, in the Parish of Saint Mary,
Whitechapel, and County of Middlesex, Merchant, send greeting.
WHEREAS His most Excellent Majesty King George the Third, did, by
His Letters Patent under the Great Seal of Great Britain, bearing date at
Westminster, the Fifteenth day of July, in the thirty-fourth year of His reign,
give and grant unto me, the said William Lyttleton, His especial licence that
I, the said William Lyttleton, during the term of years therein mentioned,
should and lawfully might use, exercise, and vend, within England, Wales,
and the Town of Berwick-upon-Tweed, my Invention of "A CERTAIN MACHINE
WHICH I CALL THE AQUATIC PROPELLER, FOR THE PURPOSE OF GIVING WAY TO SHIPS
AND OTHER VESSELS DURING CALMS AND LIGHT WINDS;" in which said Letters
Patent there is contained a proviso obliging me, the said William Lyttleton, by
an instrument in writing under my hand and seal, to cause a particular de-
scription of the nature of my said Invention, and in in what manner the same
is to be performed, to be inrolled in His Majesty's High Court of Chancery
within four callendar months after the date of the said recited Letters Patent,
as in and by the same (relation being thereunto had) may more fully and at
large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
William Lyttleton, do hereby declare that my said Invention of a certain

page_text: 1. WALKER.
W LYTTLETON. (L.S.)
AND BE IT REMEMBERED, that on the same Eleventh day of November,
in the year above mentioned, the aforesaid William Lyttleton, came before our
Lord the King in His Chancery, and acknowledged the Specification afore-
said, and all and every thing therein contained, in form above written. And
also the Specification aforesaid was stamped according to the tenor of the
Statute in that case made and provided.
Inrolled the same Eleventh day of November in Al

page_text: Explanation of FIG. I aaa represents a hollow
Cilinda; & an un angle of 35 with the drier
nd
linder, bbb the Sweeps the'd at right angles to the
the pivots of the uris au which it revels in its
Frame when used. d dh is a large sheave with an acute score to prevent the repo from rendering in
it when in the act of turning, & has stress for the propose of thatening it by screws to the inside.
of the Cylhuler & the tress Bars at the aid of it. (See FIGS. 3 of 4 1.1.1) are thin Bans
with Straps (as at g.g) which bring www i to the mile of the cross bars/ FIG. 3. 2.2.2 & the alges of
the swegs support them in the pressure against the water. CCCP are the cress bars sce; FIG. 3)
which are sunk into & screed to the ends of the cylinder in the centre of them are the pivate co
and the auds bring turnid & paftmatril as at 2% the thin burs ( FIG. 1 co screw'd thereto
The bars bring made lattiah shaild stand obliquely ar parallel to the wors
fisten to them is part of the endless rope that passes at other ahru
Winch which is to be turatib by Mau, but may be done fur more effectually by means
FIG. 2 represents an and view of the Briller with three sweeps. B. The number
in proportion to the dude of the finder
FIG. 3 is the oss bure dc
FIG. 4 is the sheave fir
FIG. 5
the su
sts Skeleton
be taken to pieces
they will vire & sink
de
for free sweeps.
ylinder made
occasionally
the aide of which are
to one at the rudi af w
of a small, Steam Engine
of sweeps should be
may (as will an
of hops and bars sawit together
B. The Skeleton ylinders are best adapted for use t
readily with the motion of the Vessil