IMPROVEMENTS IN THE CONSTRUCTION OF PRINTING ROLLERS USED PROVISIONAL SPECIFICATION
Year: 1853

page_text: LETTERS PATENT to Richard Prosser, Civil Engineer, 18, Broad
Street, Birmingham, in the County of Warwick, for the Invention
of "IMPROVEMENTS IN THE CONSTRUCTION OF PRINTING ROLLERS USED
PROVISIONAL SPECIFICATION left by the said Richard Prosser at
the Office of the Commissioners of Patents, with his Petition,
on the 5th February 1853.
I, RICHARD PROSSER, do hereby declare the nature of the said In-
vention for "IMPROVEMENTS IN THE CONSTRUCTION OF PRINTING ROLLERS
USED IN MACHINES FOR PRINTING CALICOES AND OTHER SUBSTANCES " to be-
as follows:-
The nature of my improvement consists in the employment of a
complete or an elastic discontinuous hoop, Fig. 7, Sheet 1.; the lengthi
of the printing cylinder (conical inside and outside) interposed
between the copper (or other metal) printing cylinder and the ordinary

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Richard Prosser in the Great Seal Patent Office,
on the 4th August 1853.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I,
RICHARD PROSSER, of No. 18, Broad Street, Birmingham, in the
County of Warwick, Civil Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date. the Fifth day of February, in the year.
of our Lord One thousand eight hundred and fifty-three, in the, six-
teenth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Richard Prosser, Her special
licence that I, the said Richard Prosser, my executors, adminis-
trators, and assigns, or such others as I, the said Richard Prosser,
my executors, administrators, and assigns, should at any time agree
with, and no others, from time to time and at all times thereafter
during the term therein expressed, should and lawfully might make,
use, exercise, and vend, within the United Kingdom of Great Britain
and Ireland, the Channel Islands, and Isle of Man, an Invention
for "IMPROVEMENTS IN THE CONSTRUCTION OF PRINTING ROLLERS USED
IN MACHINES FOR PRINTING CALICOES AND OTHER SUBSTANCES," upon
the condition (amongst others) that I, the said Richard Prosser,
by an instrument in writing under my hand and seal, should par-
ticularly describe and ascertain the nature of the said Invention, and
in what manner the same was to be performed, and cause the same to
be filed in the Great Seal Patent Office within six calendar months next
and immediately after the date of the said Letters Patent.

page_text: NOW KNOW YE, that I, the said Richard Prosser, do hereby declare:
the nature of the said Invention, and in what manner the same is to be.
performed, to be particularly described and ascertained in and by the
following statement thereof (that is to say):
My Invention consists in the employment of a hoop or cylinder of
iron or other metal B, Figures 1, and 3, conical inside and outside,
interposed between the copper (or other metal) printing cylinder C,
(on which the pattern to be printed is engraved) and the ordinary.
wrought iron conical printing mandril, so as to forni one combined
printing roller, to be used in machines for printing calicoes and other
substances.
Figure 1, is an elevation (quarter the full size) of the parts forming.
a complete printing roller; A, being the mandril, which revolves on
bearings in the printing machine in the ordinary way; B, the elastic
iron hoop, conical inside and outside, by means of which the copper or
other engraved cylinder is firmly fixed to the printing mandril in the
following manner --The engraved cylinder C, may be made
very thin,
as one tenth of an inch; it is passed over the conical hoop B, which
may easily be done, because the cylinder C, is conical inside; the large
end is to be passed over the small end of the conical elastic hoop B,
and placed thereon in the required position. The conical mandril A,
Figures 1, 3, and 5, is then forced into the conical elastic hoop or
cylinder B, and, by expanding the same, the engraved cylinder C, the
elastic conical hoop B, and the mandril A, become firmly united
together. The key or feather D, prevents the elastic hoop B, turning
on the mandril A, and the small key or feather E, prevents the
engraved cylinder C, turning round on the elastic hoop B. The
hoop B, is made elastic by cutting a groove the entire length of the
hoop, and through its entire thickness.
Figure 1, is an elevation of the compound mandril, drawn to a scale
of one fourth the full size.
Figure 5, an end view of the same.
Figure 3, is drawn full size.
I have described the engraved cylinder C, as being conical inside.
but it may be parallel inside, in which case the elastic hoop B, must

page_text: also be parallel outside; but I prefer their being conical, because the
thin engraved cylinder can be more easily taken off the elastic hoop,
and another replaced thereon.
In witness whereof, I, the said Richard Prosser, have hereunto
set my hand and seal, this Third day of August, in the year of
our Lord One thousand eight hundred and fifty-three.
Witness,
WILLIAM BROOKES,
73, Chancery Lane.
RICHARD PROSSER. (L.S.)