IMPROVEMENTS IN THE CONSTRUCTION OF .MACHINERY OR APPARATUS EMPLOYED IN PRINTING CALICO AND OTHER TEXTILE FABRICS
Year: 1880

page_text: LETTERS PATENT to Charles Henry Nevill, of Manchester, in the County of
Lancaster, for an Invention of "IMPROVEMENTS IN THE CONSTRUCTION OF
.MACHINERY OR APPARATUS EMPLOYED IN PRINTING CALICO AND OTHER
TEXTILE FABRICS,"
PROVISIONAL SPECIFICATION left by the said Charles Henry Nevill at the
Office of the Commissioners of Patents on the 4th May 1880.
CHARLES HENRY NEVILL, of Manchester, in the County of Lancaster.
IMPROVEMENTS IN THE CONSTRUCTION OF MACHINERY OR APPARATUS EMPLOYED
IN PRINTING CALICO AND OTHER TEXTILE FABRICS."
"
This Invention relates to improvements upon an Invention for which Letters Patent
were granted to Thomas Aitken, bearing date the 4th day of January, A.D. 1873,
No. 49, the object of which was to print a stripe or other pattern across or upon
the piece at intervals, the peculiar feature of the Invention being that the printing
roller (with its furnishing roller, which was kept revolving) was brought into and
out of contact with the material at the required interval.
This process has been found defective in practise in consequence of its liability
to give an imperfect impression at the points of contact with and disconnection
from the cylinder, and it is to remedy this defect that my present Invention is
designed.
The Invention consists, firstly, in the use of springs, weights, or other suitable
direct acting appliances for the more effectual and speedy drawing away of the
printing roller or rollers from the main cylinder (instead of trusting to its or their
weight only as heretofore), and secondly, in the use of springs, braces, or other
similar appliances for holding tightly together all the bearings, slides, screws, and
levers by which the printing rollers are moved to and from the main cylinder in
such a way that the movement of the said printing rollers to and from the main
cylinder shall be more instantaneous than hitherto, and hence the said rollers will
print a clearer and truer impression than before at the points of contact with and
disconnection from the main cylinder.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Charles Henry Nevill in the Great Seal Patent Office on the
3rd November 1880.
CHARLES HENRY NEVILL, of Manchester, in the County of Lancaster.
"IMPROVEMENTS IN THE CONSTRUCTION OF MACHINERY OR APPARATUS EMPLOYED
IN PRINTING CALICO AND OTHER TEXTILE FABRICS."
This Invention relates to improvements upon an Invention for which_Letters
Patent were granted to Thomas Aitken, bearing date the Fourth day of January
1873, No. 49, the object of which was to print a stripe or cross-over upon calico or
other materials at intervals, the peculiar feature of the Invention being that each
printing roller (with its furnishing roller) could be brought into contact with the
material at the required interval.
This process has been found by me to be defective in practise in consequence of
its liability to give an imperfect impression at the points of contact of the roller or
rollers with and disconnection from the cylinder, and it is to remedy this defect
that my present Invention is designed.
The Invention consists, firstly, in the use of springs, levers, weights, or other
suitable appliances for the more effectual and speedy drawing away of the printing
roller or rollers from the main cylinder (instead of trusting to its or their weight
as heretofore), and secondly, in the use of braces or springs or other similar
appliances for holding tightly together all the bearings, slides, screws, and levers
by which the printing rollers are moved to and from the main cylinder in such a
way that the movement of the said rollers to and from the main cylinder shall be
more instantaneous than hitherto, and hence the said rollers will print a clearer
and truer impression than before at the points of contact with and disconnection
from the main cylinder.
Such being the nature and objects of my Invention I will now proceed to
describe more in detail the manner in which the same is to be or may be performed
or carried into practical effect; and in order that the same may be clearly under-
stood I have annexed hereunto a Sheet of Drawings illustrative thereof, and have
marked the same with figures and letters of reference corresponding with those in
the following explanation thereof :-
Fig. 1 is a portion of the side elevation of a printing machine, and Fig. 2 shows
a partial front elevation of the same. F represents the lower portion of the side
frame of a printing machine; B, the bowl or main cylinder, round which the cloth
or other material to be printed passes; R², R³, R³, and R represent printing
rollers; M, M, M, M, the mandrils upon which these rollers are fixed; R2 represents
a roller fitted up in accordance with the Patent granted to Thomas Aitken (and
previously referred to in this Specification), the principle of which is that by
means of suitable mechanism the cam C fixed upon the cam wheel C, W, and
acting on the small wheel W causes the roller R2 to come into contact with the
cloth travelling over the main cylinder B at such intervals as may be required.
Whereas I have found in practise that the roller R² does not leave the cloth as
quickly as could be desired, I have invented the use of springs, levers, weights, or
other suitable appliances, by which means the roller is forcibly drawn away from
the cylinder B the moment it is liberated by the wheel W falling off the cam C
onto the surface of the cam-wheel C, W, instead of trusting to its own.weight as
heretofore.
And whereas also I have found in practise that owing to what is commonly
known as "play" between the points P and P¹ the roller does not make a clear
impression at the moment of its coming into contact with the cylinder B, I have
also invented the use of braces, springs, or other similar appliances to hold tightly

page_text: together all the joints, bearings, slides, screws, and levers between the points
P and P¹.
In practise I find that a spring which acts as a brace can also be used for the
purpose of drawing the roller smartly back from the main cylinder, so that one
appliance in this instance serves both the purposes of my Invention. Attached to
the roller marked R³ is an example of the improvements I claim as my Invention.
H is a hook or loop passing over the mandrel end M, and connected with the
spring S, which is fastened to the frame F at the point T (or to any other suitable
place). This spring by exerting a continual pressure on the mandrel M braces or
binds it firmly in the direction of P³, and so prevents any "play between M
and P; it also serves to draw the roller R³ which revolves with the mandrel M
quickly back when the wheel W¹ leaves the cam C' and falls onto the surface of
the cam-wheel C, W.
"}
These improvements of mine can be applied to any rollers in a printing-machine,
and are of especial value when a large number of rollers are used at the same time,
in the manner above set forth or intermittent printing.
The improvements are applied to both ends of the mandrels or rollers in a
similar manner to the way shown in my Drawings.
As this Invention applies to the rollers working in a printing machine rather
than to the machine itself I have not considered it necessary to draw a full sketch
of a machine, or to show my Invention applied to more than one roller, because
the description of one will be as clear to a practical machine maker as if I had
drawn a large number of rollers with the Invention applied thereto.
Having now described the nature and object of my said Invention together with
the manner in which the same is to be or may be performed or carried into
practical effect, I wish it to be understood that I claim as my Invention, the
application of springs or other suitable devices for drawing the roller away from
the main cylinder of a printing machine of the class hereinbefore mentioned, in the
manner and for the purpose set forth above, and also the use, for the purpose above
set forth, of appliances for bracing or binding together tightly those portions of the
machine which I have already described.
In witness whereof, I, the said Charles Henry Nevill, have hereunto set my
hand and seal, this Second day of November, in the year of our Lord
One thousand eight hundred and eighty.
CHARLES HENRY NEVILL
(L.S.)