Process and Apparatus for the Manufacture of Bobbins, Cop-tubes, or similar Flanged Tubes from Paper or other suitable Compressible Material.
Year: 1889

page_text: Date of Application, 1st Oct.. 1889
Complete Specification Left, 1st July, 1890-Accepted, 30th Aug., 1890
PROVISIONAL SPECIFICATION.
Process and Apparatus for the Manufacture of Bobbins, Cop-tubes, or
similar Flanged Tubes from Paper or other suitable Compressible
Material.
I, CONRAD GUSTAV FERDINAND COMNICK, Manufacturer, of Rochlitz, Germany,
do hereby declare the nature of this invention to be as follows:-
The present invention relates to the manufacture of flanged bobbins or cop-tubes
from paper or other suitable compressible material, and has for its object to fix the
flanges to the central tube or core, in such a manner that they are not liable to become
loose.
For this purpose, each of the perforated end dises or flanges is mounted loose upon
the central tube, at a short distance from its extremity, and then subjected to strong
pressure, parallel to the axis of the bobbin, in such a manner that the ends of the tube
remain free, the pressure being applied only to the flanges. This operation is prefer-
ably performed in two stages, the pressure in the second stage being assisted by heat,
to form a solid connection between the tube and the flanges.
The apparatus for the first stage, or preliminary pressure, may comprise a pair of
moulds or cheeks, each of which has a semi-cylindrical opening for the bobbin and
holds the latter from the side; a pair of guide rails or frames for the checks, which are
capable of sliding between the said rails; a pair of eccentrics, held between the said
rails in a pair of rectangular shackles, and adapted to press the moulds together, the
axles of the said eccentrics being supported by the rails and connected with each other
by a pair of levers and a connecting rod; a crank or other mechanism for turning one
of the two eccentric shafts; a pair of end blocks or cross-heads adapted to press on
the outer face of the bobbin flanges and connected with the two main rails or frames
by two links, each block having in the centre an annular projection equal in diameter
to that of the bobbin flange, and fitting into a corresponding recess or socket at the
end of the moulds while the axial opening or socket of the said projection receives
the end of the bobbin tube or core, but is much deeper than the part of the bobbin
tube that projects over the flange.
Instead of two crank levers and a connecting rod for coupling together the
eccentric shafts, I may employ toothed sectors fixed on the eccentric shafts and gearing
into a rack.
After the flanges have been thus compressed from both sides, the bobbin is taken out
of the press and subjected to hydraulic pressure, in a second apparatus. This latter is
a hydraulic press; in which the fixed and the movable platform are both heated by
steam or other suitable means.
Each bobbin as it comes from the first apparatus is provided with a pair of semi-
cylindrical packing blocks or temporary anvils which fit between the flanges of the
bobbin, and are recessed in the centre where they enclose the central tube. These
bobbins with packing blocks are now placed upright in cylindrical holes formed in a
press block which is placed on the lower or movable platform of the press, the said
press-block containing 9, 12, 16 or 25 of these holes which extend vertically through
the said press-block. "Vertically through the centre of each hole extends a thin guide
spindle fixed at its lower end to the movable platform of the press, and projecting over
the top of the press-block. Each cylindrical hole in the upper part of the press-block
is fitted with a cylindrical anvil block which is axially perforated for the passage of
the guide spindle, and each row of anvil blocks rests on (and is fixed to) a cross bar
placed in a deep recess of the press-block and extending right and left beyond
the latter, where it is fixed to a main beam. The two main beams that support the
FD017

page_text: ends of the two rows of cross bars rest at their extremities on lateral projections or
shoulders of the 4 press columns.
As mentioned above, the said cross bars, are situated in parallel recesses of the press-
block, which are deep enough to receive the anvil blocks, when they are pressed out of
their holes by the bobbins and their packing blocks.
The bobbins with their packing blocks are first mounted on the said central
spindles projecting axially through the said anvil blocks, and are supported by the said
anvil blocks. Thereupon the hydraulic press is closed, so that the anvil blocks and
cross bars are pushed down, and the bobbins are pressed into the cylindrical holes of
the press-block, by means of cylindrical projections extending down from the base or
face of the upper platform; each of these projections having a deep axial perforation
or socket to receive the projecting end of the bobbin tube or core, without subjecting
the same to axial pressure. During the period of strong pressure, the cross-bars are
situated at the end of their respective recesses and rest directly on the movable platform,
instead of being supported only at the ends (by the main beams).
By the simultaneous application of axial pressure and heat, a solid connection is
produced between the paper flanges and the central tube of each bobbin.
Dated this 1st day of October 1889.
FAIRFAX & WETTER,
433, Strand, London, Agents.
COMPLETE SPECIFICATION.
Process and Apparatus for the Manufacture of Bobbins, Cop-tubes, or
similar Flanged Tubes from Paper or other suitable Compressible
Material.
I,. CONRAD GUSTAV FERDINAND COMNICK, Manufacturer, of Rochlitz, Germany,
do hereby declare the nature of this invention and in what manner the same is to be
performed, to be particularly described in and by the following statement :—
The present invention relates to the manufacture of flanged bobbins or cop-tubes
from paper or other suitable material, and has for its object to fix the flanges to the
central tube or core, in such a manner, that they are not liable to become loose.
For this purpose, each of the perforated end dises or flanges is mounted loose upon
the central tube, at a short distance from its extremity, and then subjected to strong
pressure, parallel to the-axis of the bobbin, in such a manner, that the ends of the tube
remain free, the pressure being applied only to the flanges. This operation is prefer-
ably performed in two stages, the pressure in the second stage being assisted by beat,
to form a solid connection between the tube and the flanges.
T
i
In the annexed drawings,
Fig. 1 is a vertical section and
Fig. 2 a plan of an apparatus for performing the first stage of operations.
Fig. 3 is a vertical section of the same in a different position.
Figs. 4 and 5 are detail views of the moulds used in the said apparatus ;
Fig. 6 is a section of a bobbin,
Figs. 7 and 8 represent a.modification.
The apparatus for the first-stage, or preliminary pressure, may comprise a pair
of moulds or cheeks C, C, each of which has a semi-cylindrical opening for, the
bobbin R and holds the latter from the side; a pair of guide rails or frames Z for the
cheeks, which are capable of sliding between-the said rails; a pair of eccentrics B, B
held between the said rails-outside the moulds in a pair of rectangular shackles bb and
adapted to press the moulds together, the axles of the said eccentrics being supported
by the rails.and connected with each other by a pair of levers E; E' and a con-
necting rod F; a crank D or other mechanism for turning one of the two eccentric
shafts a pair of end blocks or cross-heads U U₁adapted to press on the outer
face of the bobbin flanges and connected with the two main rails or frames by
„two links V, VI, each block -having' in the centre an annular projection u u¹ equal

page_text: in diameter to that of the bobbin flange, and fitting into a corresponding recess
or socket at the end of the moulds, while the axial opening or socket g, g of the:
said projection receives the end of the bobbin tube or core R, but is much deeper,
than the part of the tube that projects over the flange.
Instead of the two crank levers and a connecting rod for coupling together the
eccentric shafts, I may employ toothed sectors S, S fixed on the eccentric shafts and
gearing into a rack T. (Figs. 7 and 8).
After the discs A A' have been placed on the ends of the tube R and the whole-
introduced between the open cheeks, Figs. 1 and 2, the mould is closed by turning the-
excentrics BB' into the position shown by Fig. 3, and subjected to the action of the
press. The mechanism of the press will now automatically and uniformly compress.
the rings A and A' in the direction of their axis, while the ends of the tube Renter
the recesses g, g, without being exposed to pressure. After the press blocks have.
receded, the mould is again opened by turning back the excentrics, the bobbin is taken
out of the mould, and subjected to hydraulic pressure at a high temperature by means.
of a second apparatus which is illustrated by Figs. 9 to 18, of which Figs. 11 and
13 are vertical sections in different positions and Fig. 2 a horizontal section along:
line RR of Fig. 11, while the remaining figures represent details.
Each bobbin, as it comes from the first apparatus, is provided with a pair of semi-
cylindrical packing blocks hh.or temporary anvils which fit between the flanges of the
bobbin, and are recessed in the centre, where they enclose the central tube, as shown
by Figs. 9 to 10 and 17. These bobbins with packing blocks are now placed upright
in cylindrical holes formed in a press block K, Figs. 11 to 1, which is placed on the
lower or movable platform of the press, the said press-block containing 9, 12, 16 or 25
of these holes which extend vertically through the said press-block. Vertically through
the centre of each hole, extends a thin guide spindle 11, fixed at its lower end
to the movable platform of the press, and projecting over the top of the press-block.
Each cylindrical hole in the upper part of the press-block is filled with a cylindrical
anvil block m which is axially perforated for the passage of the guide spindle, and
cach row of anvil blocks rests on (and is fixed to) a cross bar o placed in a deep recess
of the press-block and extending right and left beyond the latter, where it is secured to
the main beams p p'. The two main beams of the two rows of cross bars rest at their
extremities on lateral projections or shoulders g¹ of the 4 press columus.
As mentioned above, the said cross bars o are situated in parallel recesses of the
press-block k, which are deep enough to receive the anvil blocks m, when the latter are
pressed out of their holes by the bobbins and their packing blocks. The blocks h fit
exactly into the holes s, Figs. 15 and 16 of the body k, in which at the beginning of
the operation, the anvil blocks m are situated.
The bobbins with their packing blocks are first mounted on the said spindles and
are supported by the said anvil blocks m, Fig. 11. Thereupon the hydraulic press is.
closed, so that the anvil blocks m, m and cross-bars are pushed down, and the bobbins
are pressed into the cylindrical holes of the press-block k, by means of cylindrical
projections or dies n n extending down from the base or face of the upper platform;
each of these projections having a deep axial perforation or socket to receive the pro-
jecting end of the bobbin tube or core, without subjecting the same to axial pressure.
During the period of strong pressure, that is, when the press is closed, Fig. 13, the
cross-bars o, o are situated at the end of their respective recesses and rest directly on
the face of the movable platform V, instead of being supported only at the ends (by
the main beams p, p).
The necessary heat is produced by steam conducted through the canals i of the
platforms.
When the press moves backward, the cross bars o, o, and consequently also the
anvils m, m, are held back by the beams p, p' supported at g, g', and by the down
motion of the body k the bobbins, together with the blocks h, h are expelled from the
mould and replaced into the original position, Fig. 11, after which the finished bobbins
can be easily removed and replaced by a fresh set, which has been subjected to pre-
liminary pressure by the apparatus described at the beginning.

page_text: The recesses and gl have again the object to prevent the application of axial
pressure to the ends of the tube R, while the discs A, A' are strongly compressed, so
that the inner edges enter the surface of the tube, as illustrated by Fig. 17, and at the
same time the material is highly heated, so as to cause the dises to unite with the tube,
to form practically one piece.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, 1 declare that I claim
1. The process for the manufacture of bobbins or other flanged tubes from paper
or similar material, which consists in pressing the flanges or end discs A A¹ into
the external surface of the tubular core R, by means of axial pressure applied to the
said discs only, while the ends of the tube remain free, and uniting the said discs with
the surface of the tube by means of heat, substantially as described.
2. The apparatus for applying preliminary pressure, comprising in its construction
a pair of moulds CC, excentric mechanism B B', EE, F, or BB, SS T, and press-
blocks U U', substantially as described with reference to Figs. 1 to 8.
3. The apparatus for uniting the flanges with the tubular core of the bobbin by
means of pressure and heat, comprising in its construction a moulding body or block k,
packing pieces h, anvil blocks m, dies n, supporting and lifting bars o, p and a
hydraulic press
provided with heating appliance i, i, substantially as described with
reference to Figs. 11 to 17.
Dated this 30th day of June 1800
C. G. F. COMNICK.
By Fairfax & Wetter,
433, Strand, London, Agents.