A MACHINE ATTACHED TO THE STERN OF ANY VESSEL, BOAT, OR BARGE, FOR THE PURPOSE OF MOVING THE SAME ON NAVIGABLE CANALS OR STILL WATERS
Year: 1796

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
POTTS, of Sanctuary, in the Parish of Penrice, in the County of Glamorgan,
Farmer, 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 Twentieth day of July, in the thirty-sixth year
of His reign, give and grant unto me, the said Thomas Potts, His especial
licence that I, the said Thomas Potts, during the term of years herein men-
tioned, should and lawfully might use, exercise, and vend, within England,
Wales, and the Town of Berwick-upon-Tweed, my Invention of "A MACHINE
ATTACHED TO THE STERN OF ANY VESSEL, BOAT, OR BARGE, FOR THE PURPOSE OF
MOVING THE SAME ON NAVIGABLE CANALS OR STILL WATERS;" in which said Letters
Patent there is contained a proviso obliging me, the said Thomas Potts, by
an instrument in writing under my hand and seal, to cause a particular descrip-
tion of the nature of my said Invention, and in what manner the same is to be
performed, to be inrolled in His Majesty's High Court of Chancery within one
calendar month 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
Thomas Potts, do hereby declare that my said Invention is described in the
plan and description thereof hereunto annexed.
In witness whereof, I, the said Thomas Potts, have hereunto set my hand
and seal, this Eighth day of August, in the year of our Lord One
thousand seven hundred and ninety-six.
THO. POTTS. (L.B.)

page_text: AND BE IT REMEMBERED, that on the same Eighth day of August, in
the year above written, the aforesaid Thomas Potts came before our Lord
the King in His Chancery, and acknowledged the Specification aforesaid, 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 5
that case made and provided.
Tuolled the Tanth day of August in the woan shove writton

page_text: wyour www up and suspenas me Lord, Bar or Chain
"
D. with the vertical our E and its pole e. c. as in Fig 2nd ... two projecting peices to fasten the braces of B.B.f.f. the stays of the vertical oar E fastened
to the projecting part of the pole o. e. as in Fig 2nd F.F.FF. a stern section of the Barge._.the stem of the vertical var E fixed to it by nails rivets or nuts
and screws. 9.9.9. Mortices in the stem k to raise or lower the oar according to the immersion of the Barge Boot or vessel. Figure 2nd a side view of the large
und apparatus. b. 6. the bruces for the bars. B.B: Fig 1st fastented to the external and internal parts of the projecting pieces. c.ch.h.lu.hu, the crass
bars for pushing or pulling the var or ours fastened to the poie .c. w. u sliding weight to balance E. y. a wedge to fixe sliding weight. H... the surface of the water in
which the vessel is immersed.As this apparatus may be adapted to burges & of various sizes it is impossible to describe what may be its proper dimensions._ it is to be
observed, however the greater the power to be ward the wider the car may be made it should be made d such timber as is least liable to be warped. To make the apparatus
work casy cure must be taken to place the sliding weight w. to balance the Oar E suspended by D. Then the men holding the cross bar h.hhh may raise or lower the Dar
E at pleasure and make the stroke lang or short, derp or shallow as they please by raising or lowering the end of the polo e.. where the cress bars are applied and exert their whole
force together with that of the descending weight, w. ugainst a column of water equal to the immersed part of the our which having performed, its stroke will return, to its place by
means of the descending weight and depression of the end where the cross bars are applied and then by derating the said end mow the Oar will dip perpendicularly and be
ruly for repeating the Stroke when used at the head of a vessel the pole e.e. should be of such length as not to cause the water impelled by the our to act against the head, of
the reso.when at the sides the length may be discretionary.
used