IMPROVEMENTS IN MACHINES FOR PRINTING CALICO AND OTHER FABRICS
Year: 1867

page_text: LETTERS PATENT to James Murdoch Napier, of York Road, Lambeth,
in the County of Surrey, for the Invention of "IMPROVEMENTS IN MACHINES
FOR PRINTING CALICO AND OTHER FABRICS."
Sealed the 15th May 1868, and dated the 16th November 1867.
PROVISIONAL SPECIFICATION left by the said James Murdoch Napier at
the Office of the Commissioners of Patents, with his Petition, on the
16th November 1867.
I, JAMES MURDOCH NAPIER, of York Road. Lambeth, in the County of
Surrey, do hereby declare the nature of the said Invention for "IMPROVEMENTS
IN MACHINES FOR PRINTING CALICO AND OTHER FABRICS," to be as follows:-
This Invention has for its object improvements in machines for printing
calico and other fabrics. At the present time in printing calico and other
fabrics engraved cylinders are employed; to these cylinders the colour is
supplied, and they have doctors or scrapers applied to them in such manner as
to remove the colour from the parts of the cylinders which are not engraved
or cut away.
Now according to my Invention I employ in place of such doctors or scrapers
wiping rollers having yielding surfaces, and the colour which is removed from
the engraved cylinders by such wiping rollers I cause to be transferred to
hard rollers or surfaces from which it is gathered by a scraper or doctor. The
wiping rollers I prefer to form of india-rubber covered with leather, the
india-rubber should be vulcanized.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said James Murdoch Napier in the Great Seal Patent Office
on the 16th May 1868.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I. JAMES
MURDOCH NAPIER, of York Road. Lambeth, in the County of Surrey. send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Sixteenth day of November, in the year of our Lord
One thousand eight hundred and sixty-seven, in the thirty-first year of Her
reign, did for Herself, Her heirs and successors, give and grant unto me,
the said James Murdoch Napier, Her special licence that I, the said James
Murdoch Napier, my executors, administrators, and assigns, or such others
as I, the said James Murdoch Napier, 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 MACHINES FOR PRINTING CALICO AND OTHER FABRICS," upon
the condition (amongst others) that I, the said James Murdoch Napier, my
executors or administrators, by an instrument in writing under my, or their,
or one of their hands and seals, should particularly 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
Letters Patent.
date of the said
NOW KNOW YE, that I, the said James Murdoch Napier, 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:-
This Invention has for its object improvements in machines for printing
calico and other fabrics. At the present time in printing calico and other
fabrics engraved cylinders are employed: 10 these cylinders the colour is
supplied, and they have doctors or scrapers applied to them in such manner as
to remove the colour from the parts of the cylinders which are not engraved or
cut away.
Now according to my Invention I employ in place of such doctors or
scrapers wiping rollers having yielding surfaces, and the colour which is removed
from the engraved cylinders by such wiping rollers I cause to be transferred

page_text: readny carried по спест I w procera to describe щe Drawings легенто
annexed.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a transverse section, and Figure 2 a plan of a portion of a
machine for printing calico and other fabrics, and illustrates my improved
method of wiping or doctoring the color from off the cylinders used in such
machines.
A represents the centre pressure cylinder with its axisa; B' and B are
guide rollers for leading on and leading off the fabric; C1, C2, C3, and (+ are
printing rollers of which there may be less or more according to the number
of colours to be printed; D1, D2, D. D', are wiping rollers having yielding
surfaces and acting against the printing cylinders (, C, and C: E', E.
E, and E' are cleaning rollers having hard and smooth surfaces acting against
the wiping rollers D', D2, D3, D'; F, F, F, F, are doctors or scrapers
acting upon the hard smooth cleaning rollers E¹, E, E, E; they are mounted
on arms turning on the axes Fx, and their pressure on the cleaning rollers is
adjustable by weights or springs. The printing colour is placed in the
positions G', G. G, G. and is there retained at such a level that the printing
rollers as they revolve dip into it. The arrows show the directions in which
the several cylinders and rollers revolve. The printing cylinder may be
turned in conjunction with the centre cylinder A in the usual way by the
wheel H and the pinions I, motion being given to the wiping rollers D through
wheels J, K. L. and M, while the cleaning rollers E receive their motion
through pinions N which gear with wheels L. These wheels and pinions are
so arranged and proportioned as to give the suitable speeds and directions of
motion so that the color will be wiped off the printing rollers C and received
by the wiping rollers D, and so that the surface of the hard smooth
rollers E may clean the color off from the wiping rollers D. The wiping
roller should be properly adjusted against the printing roller and against the
cleaning roller, so that it may rub against them with sufficient force. These
adjustments in the arrangement shown are made by mounting the rollers D
and E and the axis of the wheels K, L, of each set in a frame capable of
rocking on the main frame and regulated in its position by adjusting screws.
The roller D is adjustable towards the roller E along guides in the rocking

page_text: frame. I prefer to make the surface of the cleaning roller move faster than
that of the wiping roller, and that of the wiping roller faster than that of the
printing roller. The doctors or scrapers F, F. F, F. have a short endway
traverse communicated to them as is now usual. A wiper or doctor may
advantageously be applied in the usual way to each roller in a position to
remove from it any fluff it may gather from the fabric and prevent it entering
the colour. The way of constructing the wiping rollers which is preferred is
R is
indicated in Figure 3 which is a transverse section of one of the rollers.
a metal spindle roughened or grooved on the surface; S are vulcanized india-
rubber rings or discs placed tightly upon it and secured by india-rubber
cement. These rings or discs are each a few inches thick; the india-rubber
is made in this way in place of as a single tube for convenience of manufac-
ture, the rings or dises are perforated as is shown to give the required
amount of pliability. T is a covering of leather cemented on to the surface of
the roller.
I have not thought it desirable to explain and illustrate the whole machine,
which is well known, but only sufficient to indicate my improvements which
refer only to the means for doctoring or removing the color from the parts of
the printing cylinders which are not sunk or cut away.
By the use of my Invention printing cylinders having patterns with
lines running lengthwise upon them can be doctored or wiped clean for
printing.
In witness whereof, I, the said James Mnrdoch Napier, have hereunto
set. my hand and seal, this Sixteenth day of May. in the year of our
Lord One thousand eight hundred and sixty-eight.
JAMES M. NAPIER. (L.S.)