Improvements in the Manufacture of Cardboard and other Tubes or Pipes.
Year: 1890

page_text: Date of Application, 5th Aug., 1890
Complete Specification Left, 30th Oct.. 1890-Accepted, 20th Dec., 1890
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Cardboard and other Tubes
or Pipes.
A communication from EMIL SALTZKORN, Consul, and LUDWIG NICOLAI,
Manufacturer, both of Löbtauerstrasse, 20, Dresden, in the Kingdom of
Saxony.
1, ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex,
M.I.M.E., do hereby declare the nature of this invention to be as follows:
This invention relates to the manufacture of tubes or pipes of any desired
material such as cardboard, india-rubber etc. in such a manner that their length
may be varied at will. For this purpose the band or sheet of material employed
is wound spirally in opposite directions in such a manner that the edges of the
adjoining convolutions exactly fit against each other; the joints thus formed being
further consolidated by the surfaces of the convolutions wound in the opposite
direction, covering such joints externally or internally as the case may be.
By
securing two or more such spirals together in any manner suitable, say by pasting,
or by other means, the result will be an exceedingly strong pipe or tube with
smooth inner and outer walls applicable to a great variety of purposes.
The winding of one band is preferably commenced by means of a mandrel to
which the end of such band is attached.
The latter is then wound around the said mandrel spirally in the desired
direction and in such a manner that the edges of the adjacent convolutions exactly
fit to each other. After this the second band is wound over and around the first, in
the opposite direction.
When paper or cardboard tubes are to be formed the paste is applied to the
edges of the material while it is being wound each tube when ready being provided
at either end with a ring of metal or the like for the purpose of strengthening the
edges and protecting them from injury.
A possible modification of the process consists in providing the tubes or pipes:
either internally or externally or on both sides with helical spaces or grooves so
that if desired the tube may be threaded within or without. It will be understood
that in this case the successive convolutions instead of meeting at their adjacent
edges should be wound the desired distance apart. Of course the next following
(underlying or enveloping) spiral must in the same way as in the former case consist
of convolutions whose edges abut against each other so that this spiral forms as it
were the bottom of the spiral groove.
Dated this 5th day of August 1890.
W. P. THOMPSON & BOULT,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Cardboard and other Tubes
or Pipes.
A communication from EMIL SALTZKORN, Consul, and LUDWIG NICOLAI,
Manufacturer, both of Löbtauerstrasse, 20, Dresden, in the Empire of
Germany.
I, ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex,
M.I.M.E., 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:-
This invention relates to a process of manufacture of pipes of any desired length
[Price Ad

page_text: of card board or the like and which consists in winding bands of the material
spirally on a mandrel or equivalent so that the successive convolutions meet edge
to edge.
The surface of the spiral band is then coated with adhesive material such for
example as size, paste, dextrine or glue, and another band is then wound round
the first spirally but in the opposite direction. The surface of the second band is
again covered with adhesive substance and a third band is wound over the second
the convolutions following the same direction as those of the first band but the
opposite direction to the convolutions of the second band. If a fourth band be
added it will be wound in the same direction as the second and so forth whatever
the number of bands superposed.
Between the different bands, intermediate longitudinal strips of card-board or
other suitable material or tubes may be interposed if desired. Or instead of a
mandrel a tube may be employed in the first instance to wind the consecutive
bands on in which case this tube need not be removed when the winding is
completed.
The main feature of this process is the superposing of the bands so that the
filires thereof intersect cross wise, whereby the tubes are rendered stronger than
those in which all the fibres are parallel or at the same angle to the axis.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed as communicated to me by
my foreign correspondents, I declare that what I claim is -
•
1. A process of manufacture of tubes of cardboard or the like consisting in
winding two or more bands spirally one over the other and stiffening the resulting
tube by the interposition between the said bands of longitudinal bands of any
suitable material substantially as specified.
2. A. process of manufacture of tubes of cardboard or the like consisting in
winding two or more bands spirally one over the other and stiffening the resulting
tube by placing sections or lengths of tube either underneath, between or over the
superposed bands substantially as specified.
Dated this 30th day of October 1890.
W. P. THOMPSON & BOULT,,
Agents for the Applicant.