An Improved Process for Producing Ornaments on Sheet Metal, Leather, Pasteboard, and the like.
Year: 1891

page_text: Date of Application, 1st May, 1891--Accepted, 6th June, 1391
COMPLETE SPECIFICATION.
An Improved Process for Producing Ornaments on Sheet Metal,
Leather, Pasteboard, and the like.
I, GUSTAV KLUMPP of Esslingen, in the Kingdom of Württemberg, Empire of
Germany, Engraver, 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 :---
The object of this invention is a process for producing ornaments of any suitable
shape on thin sheet metal or hollow sheet metal bodies on leather, pasteboard and
the like by rolling through a pair of cylinders or segments of a cylinder or through
a cylinder and a sliding plate, one cylinder surface serving as die and the other or
the sliding plate respectively as matrice or vice versa.
The method hitherto employed for providing sheet metal with ornaments consists
in pressing by means of die and appurtenant matrice a limited sheet metal surface,
the die or the matrice being given a reciprocating movement and the pressing taking
place during the movement in one direction and the introduction of a new sheet or
the displacement of a commenced one during the movement in the other direction.
The pressing is therefore intermittent.
The improved process materially differs from the processes hitherto usual by the
pressing being uninterruptedly continued, the sheet to be pressed being placed
between a pair of cylinders, the surface of one of which is formed as die and that
of the other as corresponding matrice in such a manner that with uniform
revolution of the cylinders the projecting shapes of the surface of one cylinder
press the sheet metal into the corresponding cavities of the other cylinder surface.
A stretching of the sheet metal or a deformation of the outer shape thereof is
avoided by the clear distance of the cylinders from each other being slightly in
excess of the thickness of the sheet metal. In this manner endless sheets or strips
of metal can be impressed in the way of paper hangings with continuously
repeated ornaments and that with the application of a considerably lower pressure
than is required with the presses hitherto used, the rolling taking place by means
of only one progressive line (line of contact of the cylinders with the sheet metal)
while the speed of progress can be regulated at pleasure.
The application of the improved rolling process is particularly advantageous for
producing hollow ornamented sheet metal bodies. The pressing, as mentioned
above, taking place properly speaking on one line only, the die surface is always
rather parallel to the sheet metal surface, whereby it is possible to roll ornaments
of considerable depth and sharply defined shapes. The mantle of hollow bodies
can be provided with ornaments surrounding the same either interruptedly or
spirally continued and projecting at every place with the same sharpness, which
could not be attained with the presses hitherto employed. With corresponding
selection of the ornaments even the original forms of the hollow bodies can be
materially altered and very interesting and tasteful shapes can be thereby
produced.
When ornaments are repeated or when the making of two complete rollers
serving as die and matrice appears too expensive for a certain purpose, also
changeable segments or sectors of cylinders may be substituted therefor, the mantle
surfaces of which are correspondingly worked. In this case likewise an intermittent
rolling-in takes place, as, after the respective segment that is to say the ornament
thereof is rolled in, the sheet must be taken out and adjusted afresh.
In cases where the ornaments are of such a nature that with even sheets a
bulging thereof may be expected, the one cylinder serving as die or matrice may be
replaced by an even plate, the upper surface of which is worked as die or matrice,

page_text: this piate being secured on a slide to which its gliding movement is imparted by the
appurtenant cylinder and by means of spur wheel and toothed rod or any other
suitable driving device. The sliding movement must of course be conformed to the
revolution of the surface of the cylinder.
Referring to the accompanying drawing
Figs. 1 to 3 represent any cylinder press which is so altered that the projecting
ends of the rollers are made adapted to receive the round die A and the round
matrice B or the round die segments a a¹ and round matrice segments b
According to requirement the diameters of the dies and matrices can be materially
different. Also a complete round die may co-operate with a round matrice segment
or vice versa or two segments may co-operate as indicated by Figs. 4 to 6.
Figs. 7 to 9 illustrate the co-operation of a round die A. and a sliding matrice B¹
which is secured on the slide C receiving its sliding movement in support D by
means of rack bar c and toothed wheel c¹. Also in this case a cylinder segment or
sector may be employed instead of a complete cylinder; the roller A may have
any suitable shape, but in all cases the unrolling of the shape of the die must
correspond to that of the matrice, which is to be particularly taken into consideration
when the two roller surfaces have unequal revolving speed.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what
I claim is:
1) A process for providing thin sheet metal, leather, pasteboard and the like or
hollow bodies of such material with ornaments of any suitable shape, characterised
by the application of a pair of cylinders A and B through which the sheets or
hollow bodies are passed, the surface of one cylinder being formed as die and that
of the other as corresponding matrice, whereby the ornaments are produced
Figs. 1, 2 and 3, substantially as set forth.
2) A modification of the cylinders referred to in Claim 1 consisting in the
application, at one end or at both ends of the cylinders, of exchangeable round
dies and round matrices or round die portions and round matrice portions Figs. 4,
5 and 6, substantially as set forth.
3) A modification of the cylinders or cylinder portions referred to in Claims 1
and 2 consisting in the application, in lieu of the one cylinder serving as die or
matrice or of the corresponding cylinder portion of an even plate B', the top
surface of which is formed as die or matrice, said plate being secured on a slide C
adapted to move in a support D and to receive a sliding movement corresponding
to the roller A by means of rack bar e and toothed wheel c' or of any other suitable
driving contrivance, substantially as and for the purpose set forth.
DAL
179.1.20 2018 18 day of
GUSTAV KLUMPP.
By Huelser & Co.,
Temple Chambers, London, his Agents.