MACHINE FOR PRINTING OF LETTER-PRESS
Year: 1794

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, TпоMAS
PROSSER, of the Parish of Saint Giles in the Fields, in the County of Middle-
sex, Joiner, send greeting.
WHEREAS His present Majesty King George the Third, by His Letters
Patent under the Great Seal of Great Britain, bearing date at Westminster,
the Ninth day of December now last past, hath given and granted unto me,
the said Thomas Prosser, my executors, administrators, and assigns, special
licence, full power, privilege and authority, to mako, use, exercise, and vend,
within England, Wales, and the Town of Berwick-upon-Tweed, during the
term of years therein expressed, my Invention of a "MACHINE FOR PRINTING OF
LETTER-PRESS;" in which said Letters Patent there is contained a proviso,
obliging me, the said Thomas Prosser, by an instrument in writing under my
hand and seal, to cause a particular description 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 calender month next 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 I, the said Thomas Prosser, in compliance with the
said proviso, do hereby declare that the nature of my said Invention, and the
manner in which the same is made and to be performed is particularly described
and ascertained in the plan hereunto annexed, and the following description
thereof, that is to say :-
Figure 1, the machine or press. A, the cap to hold the cheeks together, as in

page_text: common presses; B, the main top, lett into the cheeks in order to resist the upper
spring; C, the upper spring, with a regulator at each end fixed in grooves. By
shifting these regulators nearer to or farther from the centre of the head of the
press the pull is made either harder or softer, as may be necessary, or occasion
require. D, the head of the machine or press; E, the spindle, with the common
bar handle; F, the till, in which is fixed a brass collar to steady the spindle;
G, the regulator to the platten, with two reverse screws fixed to iron pillars.
These screws are made to counteract each other for the purpose of levelling
and fastening the platten to an iron plate, which is fastened by a nutt to the
spindle; also four iron pillars to fasten and fix the platten firm to the
spindle; and also two guides, fixed in an iron plate, and made to run through
the till to steady and mako firm the platten. H, the platten; I, the timpan;
K, the coffin in which the stone is fixed; L, the carriage; M, the rounse and
spit; N, the winter; 0, the lower spring, with a regulator at each end, fixed
in grooves, for the same purpose and use, described in letter C above. Theso
two springs are made to act in contact with each other, and thereby the in-
pression is materially increased and the labour considerably reduced; as well
as the wear, of the letter greatly saved. P, the main bottom, lett into the
cheeks for the same purpose and use, described in Letter B, above; 'Q, the
claws of the machine or press, which may be worked in the common way of
all other presses."
In witness whereof, I, tho said Thomas Prosser, have hereunto set my
hand and seal, this 'Ninth day of January, in the 'year of our Lord
One thousand seven hundred and ninety-five, and in the thirty-fifth
year of the reign of our Sovereign Lord King George the Third.