A NEW AND ADDITIONAL MOVEMENT APPLIED TO A WATCH, TO ENABLE IT TO BE WOUND UP BY THE PENDANT KNOB WITHOUT ANY DETACHED KEY OR WINDER
Year: 1820

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
PREST, of Chigwell, in the County of Essex, Watch and Timepiece Maker,
send greeting.
WHEREAS His most Excellent Majesty King George the Fourth did, by
His Letters Patent under the Great Seal of the United Kingdom of Great
Britain and Ireland, bearing date at Westminster, the Twentieth day of
October, in the first year of His reign, give and grant unto me, the said
Thomas Prest, my exors, adññors, and assigns, His especial licence, full
power, sole privelege and authority, that I, the said Thomas Prest, my exors,
admors, and assigns, should and lawfully might, during the term of years
therein mentioned, make, use, exercise, and vend, within England, Wales,
and the Town of Berwick-upon-Tweed, my Invention of "A NEW AND
ADDITIONAL MOVEMENT APPLIED TO A WATCH, TO ENABLE IT TO BE WOUND UP BY
THE PENDANT KNOB WITHOUT ANY DETACHED KEY OR WINDER;" in which said
Letters Patent there is contained a proviso, that if I, the said Thomas Prest,
shall not particularly describe and ascertain the nature of my said Invention,
and in what manner the same is to be performed, by an instrument in writing
under my hand and seal, and cause the same to be inrolled in His Majesty's
High Court of Chancery within two calendar months next and immediately
after the date of the said Letters Patent, that then the said Letters Patent,

page_text: and all liberties and advantages thereby granted, shall utterly cease, determine,
and become void, 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 Prest, do hereby declare that the nature of my said Invention, and the
manner in which the same is to be performed, are particularly describe and
ascertained in and by the Drawing hereunto annexed, and the following
description thereof (that is to say) :-
Fig. 1 represents the back of the pillar plate when the dial is taken off.
Fig: 2 represents the action of the pendant pinion 3 into the under part of
the teeth of the wheel B, which is not so distinctly seen in Fig. 1.
Fig. 1, A is a brass wheel fixed upon the square of the barrell arbor and
secured by the pin 2; B, wheel of communication between the pendant
pinion 3 and wheel A. This wheel B. has the same number of teeth as
wheel A, but the under side next to the pillar plate is hollowed, so that
the teeth have a double action sideways or laterally into the wheel A, and
downwards or vertically into pendant pinion 3: for this vertical action see
Fig. 2, where the teeth of wheel B act above the pinion 3. 3, pendant pinion,
whose arbor 4 passes through the pendant shank, 8; the end of the arbor is
squared to receive the knob. 5 fitted thereon, and secured by a nut, Fig. 2.
7, the arbor of the wheel B; 5, pendant knob, which being turned gives
motion to the wheel B, which turns wheel A, which turns the barrel, arbor,
and thereby winds up the mainspring; 6, and 6, two clicks, which secure the
wheel A, and consequently the barrel arbor in its place, till the mainspring
developing itself requires to be wound up again, by turning the pendant knob,
.as before.
.
Although I have described the particular dimensions and forms of my
Specification, yet I do not confine myself either to shape or form where they
are variable, but shall consider any such alteration an infringment on my
Patent.
In witness whereof,, I, the said Thomas Prest, have, hereunto set my
hand and seal, this Thirteenth day of December, in the year of our
Lord One thousand eight hundred and. twenty.

page_text: AND BE IT REMEMBERED, that on the Thirteenth day of December,
in the year of our Lord 1820, the aforesaid Thomas Prest came before our
said Lord the King in His Chancery, and acknowledged the Specification
aforesaid, and all and every thing therein contained and specified, in form above
written. And also the Specification aforesaid was stamped according to the
tenor of the Statute made for that purpose.
Inrolled the Thirteenth day of December, in the year of our Lord One
thousand eight hundred and twenty.