Improvements in Engraved Rollers used in Calico Printing and Analogous Processes.
Year: 1897

page_text: Date of Application, 18th Feb., 1897
Complete Specification Left, 17th Nov., 1897-Accepted, 24th Dec., 1897
PROVIDIUNAL SPECIFICATION.
Improvements in Engraved Rollers used in Calico Printing and
Analogous Processes.
I, ROBERT JAMES WILKINSON, of the Union Club, Manchester, in the County of
Lancaster, Cotton Spinner, do hereby declare the nature of this Invention
to be as follows:-
My invention relates to improvements in the engraved rollers used in calico
printing and other analogous processes, and my improvements consist mainly in
the substitution of a casing, or shell of aluminium or a suitable alloy of alumi-
nium, for the external layer of copper ordinarily applied by electro deposition
to an iron tube. For example, I employ a tube or roller of steel, iron or other
suitable metal with a grooved or otherwise suitably prepared surface and I cast,
shrink, or otherwise secure on this tube or roller a casing or outer shell of
aluminium or of an alloy of aluminium.
H. B. BARLOW & GILLETT,
Agents for Applicant.
Improvements in Engraved Rollers used in Calico Printing and
Analogous Processes.
I, ROBERT JAMES WILKINSON, of the Union Club, Manchester, in the County of
Lancaster, Cotton Spinner, do hereby declare the nature of this Invention
and in what manner the same is to be performed to be particularly described and
ascertained in and by the following statement:
My invention relates to improvements in the engraved rollers used in calico
printing and other analogous processes, and my improvements consist mainly in
the substitution of a casing, or shell of aluminium or a suitable alloy of alumin-
ium, for the external layer of copper ordinarily applied by electro deposition
to an iron tube.
In constructing a printing roller according to my Invention, I prefer to
employ a tube of steel or other metal as a foundation for the roller, I next take
a drawn or other tube, or shell of any convenient thickness of aluminium or of
an alloy of aluminium and shrink this upon the steel tube; if necessary the
periphery of the aluminium is then turned, burnished, or otherwise prepared pre-
vious to having a pattern engraved or otherwise produced upon it either in relief
or intaglio. If it should be found desirable the exterior surface of the steel tube
Price 37

page_text: could be grooved or otherwise suitably prepared to make a firmer connection
between it and the aluminium tube.
Although I find that an aluminium tube or shell can be shrunk on to a steel or
other metal tube I wish it to be understood that I do not limit myself to this
method of securing the two tubes the one upon the other and as an alternative
a coating of aluminium or alloy of aluminium might be cast upon a steel or other
tube.
It is sometimes desirable or necessary to employ printing rollers of very large
diameter and such rollers if constructed of cast iron with a coating of copper or
composed entirely of copper are so great in weight and so expensive in first cost
as to be almost prohibitive whereas a roller composed of a comparatively light
steel tube with a covering of aluminium or an alloy of aluminium might over-
come the objections referred to.
Among the advantages of my aluminium covered roller may be mentioned
economy in first cost as compared with copper rollers, better effects in printing
owing to aluminium being of considerably finer grain than copper, whereby the
engraving of the pattern will be sharper and more distinct and durable and
further when the outer shell is too thin, facility of renewal as the aluminium
shell can be readily removed and replaced by a new one at small cost and in a
short time.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed I declare that what I
claim is:-
An engraved roller constructed of an outer casing, tube, or shell, of aluminium
or of a suitable alloy of aluminium, and an inner tube or roller of steel or other
suitable metal substantially as and for the purposes herein described.
Dated this 16th day of Norambor 1907
H. B. BARLOW & GILLETT
Agents for Applicant 17 St. Ann's Square Manchester.