CERTAIN IMPROVEMENTS IN HORIZONTAL WATCHES
Year: 1813

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ROBERT
WESTFIELD, of Saint James Street, in the Parish of Saint James, Clerkenwell,
in the County of Middlesex, Watch Maker, send greeting.
WHEREAS His most Excellent Majesty King George the Third did, by
His Letters Patent under the Great Seal of the United Kingdom of Great
Britain and Ireland, bearing date at Westminster, the Ninth day of August,
in the fifty-third year of His reign, give and grant unto me, the said Robert
Westfield, my exors, adñors, and assigns, His especial licence, full power, sole
priviledge and authority, that I, the said Robert Westfield, my exors, adiňors,
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 "CERTAIN IMPROVEMENTS IN
HORIZONTAL WATCHES;" in which said Letters Patent there is contained a
proviso that if I, the said Robert Westfield, 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

page_text: within two calendar months next and immediately after the date of the said
Letters Patent, that then the said Letters Patent, and all liberties and advan-
tages whatsoever 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
Robert Westfield, do hereby declare that the nature of my said Invention,
and manner in which the same is to be performed, are particularly described
and ascertained in and by the Drawings hereunto annexed, and the following
references or description thereof (that is to say:-
My Invention consists of improvements in the horizontal escapement, by
which the friction of the teeth of the horizontal wheel in the cylinder is
intended to be reduced, and the duration of the cylinder increased. These
improvements are produced by making the stems of the horizontal wheel of
different altitudes, so that the teeth of the wheel in its revolutions act upon
different parts of the palates of the cylinder, and the diversity of action may be
increased to the number of teeth contained in the horizontal wheel.
Fig. 1 represents the escapement in action with a wheel whose teeth have
four different altitudes, viz, No. 1, 2, 3, 4, and these numbers on the teeth
correspond with the numbers on the palate of the cylinder and shew their
places of action.
Fig. 2 is a side view of a horizontal wheel with the teeth of two different
altitudes.
Fig. 3 is a side view of an horizontal wheel whose stems and teeth are all of
different altitudes. And the design is to shew that I may make horizontal
wheels of any diversity of altitudes, producing different actions on the cylinder,
embracing from an alternate height of the stems to as many as there are
teeth in the horizontal wheel.
Fig. 4 is a flat view of the wheel to shew its figure and the shape of the
teeth.
Although my Invention will embrace the whole of the teeth in the
horizontal wheel, I conceive that from two to five altitudes of the teeth will be
most convenient for general use.
In witness whereof, I, the said Robert Westfield, have hereunto set my
hand and seal, this Eighth day of October, in the year of our Lord
One thousand eight hundred and thirteen.
ROBT WESTFIELD. (L.S.)

page_text: AND BE IT REMEMBERED, that on the Eighth day of October, in the
year of our Lord One thousand eight hundred and thirteen, the aforesaid
Robert Westfield came before our said Lord the King in His Chancery,
and acknowledged the Indenture aforesaid, and all and every thing therein
contained and specified, in form above written. And also the Indenture
aforesaid was stampt according to the tenor of the Statute made for that
Durpose
Inrolled the Eighth day of October, in the year of our Lord One
thousand eight hundred and thirteen.