IMPROVE- MENTS IN MAUNDRILLS FOR PRINTING ROLLERS
Year: 1864

page_text: LETTERS PATENT to Colin Mather, Machinist, of the Salford Iron Works,
Manchester, in the County of Lancaster, for the Invention of "IMPROVE-
MENTS IN MAUNDRILLS FOR PRINTING ROLLERS."
Sealed the 26th April 1864, and dated the 6th February 1864.
PROVISIONAL SPECIFICATION left by the said Colin Mather at the Office
of the Commissioners of Patents, with his Petition, on the 6th February
1864.
I, COLIN MATHER, Machinist, of the Salford Iron Works, Manchester, in
the County of Lancaster, do hereby declare the nature of the Invention for
"IMPROVEMENTS IN MAUNDRILLS FOR PRINTING ROLLERS," to be as follows:-
This Invention has for its object improvements in maundrills for printing
rollers. For this purpose the maundrill is made near one of its ends with a
taper or cone upon it, and the engraved copper cylinder is at its ends also
made taper interiorly, so that when it is slid on to the maundrill it is able to
pass along it until the cone above mentioned on the maundrill enters and fits
into the conical mouth of the cylinder. At the further end the maundrill is
turned down or reduced in size, and a broad ring is fitted on to it, and is
capable of sliding a distance endwise. The exterior of this ring is coned or
tapered to fit the engraved cylinder at its other end. On the maundrill
within the sliding ring, and also extending beyond it, a screw thread is cut,
and this receives a nut, by screwing up which the sliding ring is forced forward
into the conical mouth of the engraved cylinder, and the cylinder becomes

page_text: firmly jammed and held between the sliding ring and the cone at the further
end of the maundrill. The sliding ring is split longitudinally in order that it
may when forced in firmly embrace the part of the maundrill on which it
slides At the outer end of the sliding ring a screw thread is cut which
receives a nut, by means of this nut the sliding ring may be drawn out when
it is desired to take the engraved copper cylinder off its maundrill, the nut
bears against the end of the cylinder, consequently when it is screwed up, as it
cannot itself travel forwards, it drives the sliding ring in the contrary direction.
In order to start the engraved cylinder off the taper or cone at the other end
of the maundrill, another screw nut is employed, it screws on to a thread cut
on the maundrill at the top of the taper or cone, and as it travels forward it
thrusts the engraved cylinder off.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Colin Mather in the Great Seal Patent Office on the 6th
August 1864.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, COLIN
MATHER, Machinist, of the Salford Iron Works, Manchester, in the County of
Lancaster, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Sixth day of February, in the year of our Lord
One thousand eight hundred and sixty-four, in the twenty-seventh year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said Colin Mather, Her special licence that I, the said Colin Mather,
my executors, administrators, and assigns, or such others as I, the said
Colin Mather, 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 MAUNDRILLS FOR PRINTING ROLLERS," upon the condition (amongst others)
that I, the said Colin Mather, my executors or administrators, by an instrument
in writing under my, or their, or one of their hands and seals, 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 Colin Mather, do hereby declare the
nature of the said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement thereof (that is to say):-
This Invention has for its object improvements in maundrils for printing
rollers. For this purpose the maundril is made near one of its ends with a
taper or cone upon it, and the engraved copper cylinder is at its ends also
made taper interiorly so that when it is slid on to the maundril it is able to
pass along it until the cone above mentioned on the maundril enters and fits
into the couical mouth of the cylinder. At the other end the maundril is
turned down or reduced in size, and a broad ring is fitted on to it, and is
capable of sliding a distance endwise. The exterior of this ring is coned or
tapered to fit the engraved cylinder at its other end. On the maundril within
the sliding ring, and also extending beyond it a screw thread is cut, and this
receives a nut, by screwing up which the sliding ring is forced forward into
the conical mouth of the engraved cylinder, and the cylinder becomes firmly
jammed and held between the sliding ring and the cone at the further end
of the maundril. The sliding ring is split longitudinally in order that it may
when forced in firmly embrace the part of the maundril on which it slides. At
the outer end of the sliding ring a screw thread is cut which receives a nut,
by means of this nut the sliding ring may be drawn out when it is desired
to take the engraved copper cylinder off its maundril, the nut bears against the
end of the cylinder, consequently when it is screwed up, as it cannot itself
travel forwards, it drives the sliding ring in the contrary direction. In order to
start the engraved cylinder off the taper or cone at the other end of the
maundril another screw nut is employed it screws on to a thread cut on the
maundril at the top of the taper or cone, and as it travels forward it thrusts
the engraved cylinder off.
Having thus stated the nature of my Invention, I will proceed more fully
to describe the manner of performing the same.
DESCRIPTION OF THE DRAWINGS.
Figure 1 shews a maundril and printing cylinder or shell constructed and
combined according to the Invention; Figure 2 shews a transverse section on
a larger scale taken at the line (1), (2). Figure 3 shews another transverse
section taken at the line (3), (4), in Figure 1. In each of these Figures the
same letters of reference are used to indicate the same parts.
a is the maundril which at one end is made to fit the enlarged conical end of
the printing cylinder or shell, on which end of the maundril is formed a screw

page_text: to receive a screw nut f. The other end of the maundril is turned down or
reduced in diameter in order to receive a ring or bushing b, which is split
longitudinally at d, leaving a space between the two edges by which the ring
or bushing b can to some extent collapse. The external surface of the ring
or bushing is conical, and it is forced into the conical end of the cylinder or
shell. At that end of the maundril where the ring or bushing b is applied
there is a screw formed on the maundril to receive a nut c; by screwing up
this nut the ring or bushing 6 is forced along the portion of the maundril
which is reduced in diameter and within the conical end of the cylinder or
shell. On the outer surface and at the outer end of the ring or bushing is
formed a screw to receive the screw nut e, the screwing up of which will tend
to force the ring or bushing out of the end of the cylinder. The bushing or
ring 6 has grooves longitudinally in its outer surface which enable it to bend
more easily round the maundril. When it is desired to remove the cylinder
off the maundril the screw nut c is to be unscrewed, then by screwing up the
screw nut e which rests against the end of the cylinder or shell, the ring or
bushing will be moved outwards from the end of the cylinder or shell till it
is loose, and in order completely to remove the cylinder from the maundril
the screw nut is to be turned, which pressing against the other end of
the printing cylinder or shell will force it along the maundril. In some
instances I use the sliding bushing or ring bat both ends of the maundril
instead of Laving one of the conical parts a part of the maundril itself, in this
case the two ends of the maundril are precisely alike, the screws which are
cut on it being right and left handed, so that any friction the nuts may get
from the steps or bearings in the sides of the machine may have a tendency
to tighten up both nuts.
Having thus described the nature of my Invention and the manner of
performing the same I would have it understood that what I claim is the
combined arrangement of parts herein described.
In witness whereof, I, the said Colin Mather, have hereunto set my
hand and seal, this First day of August, in the year of our Lord One
thousand eight hundred and sixty-four.
COLIN MATHER. (L.S.)