Improvements in or relating to the Embossing of Paper, Calico, and other Materials, and Apparatus therefor.
Year: 1894

page_text: Date of Application, 25th Aug., 1894
Complete Specification Left, 24th May, 1895-Accepted, 6th July, 1895
PROVISIONAL SPECIFICATION.
Improvements in or relating to the Embossing of Paper, Calico, and
other Materials, and Apparatus therefor.
I, JULIUS HOFMEIER of V. Straussengasse 2-14, Vienna, in the Empire of
Austria, Manufacturer, do hereby declare the nature of this invention to be as
follows:-
For embossing paper, calico for book-binding, oil-cloth and the like either
engraved or etched rollers or plates have heretofore been used.
The first method offers in the first place the advantage of cheapness in
manufacturing on a large scale and it is nearly generally employed. If however it
was the question to obtain embossed surfaces entirely similar to the true grain of
leather it was necessary to use in hydraulic or lever-presses plates manufactured in
the galvanic way. Owing to its great expense this method, in spite of the
excellent work obtained, is employed only in a restricted measure; while all
attempts made with closed cylinders manufactured in the galvanic way have given
negative results. My new method permits of giving paper or other material by
means of rollers, the true grain taken in the galvanic way from the leather or other
patterns produced in the galvanic way.
This invention consists in bending in a suitable manner as by means of a bending
machine a negative plate obtained in the galvanic way and provided with the
leather grain or other pattern so as to correspond exactly to the curve of
the metallic roller of an ordinary goffering machine, in fixing the said plate to the
surface of the metallic roller by screws or equivalent extending in the longitudinal
direction of the roller and holding it down at the ends of the roller by means of
rings or in securing the plate in any other suitable manner, but without raising
obstacles to the expansion produced by the heat admitted.
The embossing is effected in the same way as in the ordinary goffering machine
by the opposite revolution of a counter-roller of paper or having a paper surface
and the impressions made by this roller are superior in sharpness even to those
produced by the strongest hydraulic presses.
DL:. ogah 1 f A 1901
W. P. THOMPSON & BOULT,
Of London, Nottingham, Liverpool, and Manchester,
Agents for the Applicant.
Improvements in or relating to the Embossing of Paper, Calico, and
other Materials, and Apparatus therefor.
I, JULIUS HOFMEIER, of Straussengasse 2-14, Vienna, V., in the Empire of
Austria, Manufacturer, 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 :-
For embossing paper, calico for book-binding, oil-cloth and the like either
engraved or etched rollers or plates have heretofore been used.

page_text: The first method offers the advantagerof cheapness in manufacturing on a large
scale and it is now generally employed. If however it was desired to obtain
embossed surfaces entirely similar to the true grain of leather, it was necessary to
use in hydraulic or lever-presses plates manufactured galvanically. Owing to its
great expense this method, in spite of the excellent work obtained, is employed
only in a restricted measure; while all attempts made with cylinders manufactured
in the galvanic way have given unsatisfactory results. My new method permits of
giving paper or other material by means of rollers, the true grain taken
galvanically from the leather or of giving such material other patterns produced
galvanically.
The accompanying drawing illustrates by way of example, a goffering or
embossing machine to which this invention is applied.
This invention consists in bending in a suitable manner as by means of a bending
machine a negative plate A obtained galvanically, and provided with the leather-
grain or other pattern, so as to correspond exactly to the curve of the metallic
roller of the goffering machine on which it is placed; then the said plate is fixed
to the surface of the metallic roller by screws A¹ or equivalent extending in a
longitudinal direction across the roller and passing through only one edge of
the plate, the opposite edge being free and a space sufficient to allow for
expansion of the plate being left between the adjacent edges. The plate is held
down at the ends of the roller by means of rings R or the plate is secured in any
other suitable manner which will not raise obstacles to the expansion produced in
the plate by the heat admitted to the roller.
The embossing is effected in the same way as in the ordinary goffering machine
by the opposite revolution of a counter-roller B of paper or having a paper surface
and the impressions made by this roller are superior in sharpness even to those
produced by the strongest bydraulic presses.
"Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed; I declare that what I
claim'is;-
1. Securing a curved embossing plate to a roller by means which will retain it
in proper position whilst permitting it to have a certain freedom to expand-or
contract relatively to the roller without being compelled to buckle or waṛp
substantially as described.
2. The combination of a roller and an embossing plate fixed. at one of its
edges to the roller so that the rest of the plate is free to move on the surface of
the roller within a clearance without buckling or warping with or without
devices to permit such movement whilst retaining the plate on the roller
substantially as described.
3. An embossing roller having a curved embossing-surface on which the contours
of the design grain or pattern result from the employment of a plate which had the
design grain or pattern aformed thereon before the curving of the plate into
conformity with the exterior of the roller.
4. The improved method of producing a curved embossing plate for use on an
embossing roller consisting in effecting the formation of the design grain or pattern
on the plate prior to the bending of the plate into conformity with the exterior of
the roller substantially, as described.
5. An embossing-roller constructed substantially as described and illustrated in
the accompanying drawing.
-Dated this 24th day of May.1895.
E