A PERFECT AND COMPLEAT MACHINE OR INSTRUMENT UPON AN ENTIRE NEW CONSTRUCTION, FOR THE MORE EASY AND EXPEDITIOUS TUNING OF HARPSICHORDS, PIANOFORTS, SPINNETS, ORGANS, GUITTARS, AND VARIOUS OTHER MUSICAL INSTRUMENTS, WHICH HATH NEVER BEFORE BEEN DISCOVERED
Year: 1787

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WARD-
HAUGH THOMPSON, of Clipstone Street, in the Parish of Saint Mary-le-bone,
in the County of Middlesex, Gentleman, send greeting.
WHEREAS His most Excellent Majesty King George the Third, by His
Royal Letters Patent under the Great Seal of Great Britain, bearing date at
Westminster, the Fifteenth day of January instant, did give and grant unto me,
the said Wardhaugh Thompson, my executors, administrators, and assigns, His
especial licence, full power, sole priviledge and authority, that I, the said
Wardhaugh Thompson, my executors, administrators, and assigns, and every
of them, during the term of years therein expressed, should and lawfully
might make, use, exercise, and vend, within that part of Great Britain
called England, the Dominion of Wales, and Town of Berwick-upon-Tweed,
my Invention of "A PERFECT AND COMPLEAT MACHINE OR INSTRUMENT UPON AN
ENTIRE NEW CONSTRUCTION, FOR THE MORE EASY AND EXPEDITIOUS TUNING OF
HARPSICHORDS, PIANOFORTS, SPINNETS, ORGANS, GUITTARS, AND VARIOUS OTHER
MUSICAL INSTRUMENTS, WHICH HATH NEVER BEFORE BEEN DISCOVERED," to have, hold,
exercise, and enjoy the same unto me, the said Wardhaugh Thompson, my
executors, administrators, and assigns, for and during and unto the full end
and term of fourteen years from the date of the said Letters Patent; in which
said Letters Patent is contained a proviso obliging me, the said Ward-
haugh Thompson, by an instrument in writing under my hand and seal, to
particularly describe and ascertain the nature of my said Invention, and in
what manner the same is to be performed, and to cause the same to be
inrolled in His Majestie's High Court of Chancery within one calendar

page_text: month next and immediately after the date of the said Letters Patent, as
in and by the said recited Letters Patent, referrence being thereunto had,
may more fully and at large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
Wardhaugh Thompson, do hereby declare that the nature of my said Invention,
and in what manner the same is to be performed, is particularly described and
ascertained in the above Plans or Drawings marked respectively Figure 1,
Figure 2, and Figure 3, and in the several explanations or descriptions thereof
subjoined, annexed, or referred thereto, and herein-after mentioned, that is
to say :-
Figure 1 represents a perspective view of the aforesaid machine or instru-
ment, and of part of the machinery thereof. Figure 2 represents a side view
of other part of such machinery, and which is inclosed in the case or body of
the said machine or instrument, and Figure 3 is a winch or handle belonging
to such machine or instrument. A, A, A, and A, in Figure 1, is the case or
body of the machine, which is made of wood. B and B in Figure 1, and B in
Figure 2, are bridges. C in Figure 1, and C in Figure 2, is a string of wire;
D in Figure 1 is a jack; E in Fig. 1, and E in Figure 2, is a brass frame
for the slider herein-after mentioned to move along; F in Figure 1, and F
in Figure 2, is such slider; G in Figure 2 is a brass chop, which, being
pressed down, by the spring herein-after mentioned, upon the aforesaid string,
defines its length; H in Figure 1, and H 'in Figure 2, is such spring; I in
Figure 1, and I in Figure 2, is a bridge or brass pillar, on which the aforesaid
brass chop presses down the aforesaid string; K in Figure 2 is a pinion;
L in Figure 2 is a rack with teeth, on which the aforesaid pinion acts, and
moves the aforesaid slider; M in Figure 1 is an index; N in Figure 1 is a
scale, with notches on the edge thereof to receive a tooth on the aforesaid
index; O in Figure 1 is a key to move the aforesaid jack; P in Figure 1 is
a rest pin; Qin Figure 1 is a hole to put the aforesaid winch or handle upon
the aforesaid pinion, and R in Figure 1 is a stay for the aforesaid 'jack.
In witness whereof, I, the said Wardhaugh Thompson, have hereunto set
my hand and seal, this Thirty-first day of January, in the year of our
Lord One thousand seven hundred and eighty-seven.
WARDHAUGH (L.S.) THOMPSON.
Signed and sealed, being first duly
stampt, in the presence of
JAS DANCER.

page_text: AND BE IT REMEMBERED, that on the Thirty-first day of January, in
the year of our Lord 1787, the aforesaid Wardhaugh Thompson came before
our said Lord the King in His Chancery, and acknowledged the Specifica-
tion aforesaid, and all and every thing therein contained and specified, in
form above written. And also the Specification aforesaid was stampt according
to the tenor of the Statutes made for that
purpose.
Inrolled the Thirty-hrst day of January, in the year of our Lord One
thousand seven hundred and eighty-seven.