Improvements in the Manufacture of Reels, Spools or Bobbins for Holding Sewing Cottons, Silk and the like.
Year: 1897

page_text: Date of Application, 2nd July, 1897
Complete Specification Left 1st Anr 1898 Accented:7th Mov 1800
Date of Application, 2nd July, 1897
· Complete Specification Left 1st Apr 1898-Accented 7th May, 1800
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Reels, Spools or Bobbins for
Holding Sewing Cottons, Silk and the like.
I, CHARLES WILLIAM ROBINSON, of Ashgate Road, Chesterfield, in the County
of Derby, Cardboard Box Manufacturer, do hereby declare the nature of this
invention to be as follows:-
This invention relates to the manufacture of reels, spools or bobbins from paper
and cardboard or similar material which may be used for the purpose of holding
sewing silks, cottons, threads and the like. The reels at present in use are made
from wood and are very heavy in comparison to the weight of silk or cotton which,
they carry, thus adding greatly to the cost of carriage from the manufacturer to
the consumer. I am aware that reels have previously. .been made from paper.
but they have proved either too flimsy or too expensive to manufacture.
The object of this invention is to provide a paper reel or bobbin which shall be
at once strong, light in weight and easy of manufacture.
In the accompanying drawings Sheet 1 illustrates my method of manufacture
and Sheet 2 ways in which the punches or chucks and moulds may be mounted.
A in Figure 1 represents a tube which is made of several turns of paper firmly
pasted together and which is to form the sides or walls of the reel or bobbin. This
is placed in a mould B Figure 2 so that both ends project a short distance from
the face of the mould B. Figure 3 represents a front elevation of the mould B
which is in halves to facilitate the removal of the tube. F F are two pins fixed
into the bottom half of the mould so that the top half may be rapidly and
accurately placed on to the bottom half after the insertion of the tube A. The
bottom half is screwed on to the bed of the machine as shown in Figures 8, 9
and. 10.
E E are two screw clamps by the moving of which through one quarter of a
turn the top half of the mould may be released or screwed down tight as the case
may be. The hole in the mould B is of such diameter as to hold the tube A tight
without crushing it. The mould B has also at both ends an annular groove P
concentral with the hole in the mould.
Two heated stamps C and D concentral with the hole in the mould are then brought
to bear on the tube, having bevelled cdges as shown, thus forcing the sides of the
tubes open or bulging the same until the annular grooves P P are reached when'
the stamps are withdrawn. The tube will then appear as shown in section in
Figure 2.
This tube with the ends enlarged as described is now taken from the mould B
and placed in a second mould B₁, similar to the first but in connection with two
other stamps G and H working in a similar manner as the first two. First of all
a disc of cardboard or other material as shown at J Figure 5 which has been
previously stamped punched and printed on if necessary is placed in such a
manner upon the peg projecting from the stamp G that the raised up side of the

page_text: disc J is next to the stamp G. G and H now advance simultaneously G pressing
the top into the enlargement of the tube at one end as shown at J. The annular
groove in the stamp H turning the enlargement at the other end of tube
over and inwards. The disc J should fit tightly into the enlargement so as to
leave the punch when the latter is, withdrawn. The partially finished bobbin
will now appear as shown in section in Figure 4.
The partially finished bobbin is now placed into a third mould B2 similar to
B and B but in connection with two other heated stamps K and L. On the
advance of the stamp K the edges of the enlargement will be turned inwards
and over the disc J by the annular groove R thus firmly fastening the same in
as at J and also perfecting the flange T. At the same time the stamp L advances
until the end N which exactly fits the disc and the inside of the tube, reaches
the disc J just as the enlargement is being turned on to and over the disc J, thus
preventing the disc J being burst inwards by the impingement of the turned in
At
edges of the enlargement and also insuring the perfect finish of the end J².
the same time as the stamp. L is advancing, the annular set-off and groove M
presses upon the turned in portion at the open end of the tube, thus firmly com-
pressing the same as shown at S. On the stamp. being withdrawn the finished
bobbin will appear in section as in Figure 6 and in elevation as in Figure 7.
In this case one end of the bobbin has been left blank, i.e. without any end disc,
in order to facilitate the fixing of the bobbin on to the spindle of the winding
machine. Should however, a bobbin with two ends in be preferred the manu-
facture can be accomplished as follows:-
The operation of manufacture illustrated in Figures 1 and 2 are the same for
a bobbin with two ends as with one. In Figure 4 instead of the stamp H on the
one side a similar one to G will operate on which stamp a disc similar to J is placed.
The tube when supplied with the discs by the stamps will have both ends similar
in appearance to the one end J¹ in Figure 4.
1
The tube is now transferred to mould B2 where a stamp similar to K will take
the place of stamp L, the operations will be same as those described in connection
with stamp K. The discs however, in this case should be stronger than is
necessary in the case where the bobbin is to only have one end as the discs can
have no support inside the bobbin to withstand the impingement of the turned in
edges of the enlargement.
The finished bobbin will then appear in section as shown at Figure 11 and in
elevation as at Figure 7.
"
Instead of heated stamps, revolving chucks of the same section may be used.
Figure 8 Sheet 2 represents the front view and Figure 9 the end view of a very
convenient method in which the stamps and moulds may be mounted where heated
stamps are used.
The mould is the same as shown at Figure 3 Sheet 1 and is screwed down to
the bed of the machine. The stamps are mounted on to slides a section of which
appears at Figure 9. The motion to the stamps is imparted by means of the
arms a a which may be connected with any convenient mechanism for producing
a reciprocating motion.
Figure 10 represents a convenient way in which chucks and moulds may be
mounted where revolving chucks are used. b b are belts driving in opposite
directions the spindles into which the chucks. are screwed.

page_text: Improvements in the Manufacture of Reels, Spools or Bobbins for
Holding Sewing Cottons, Silk and the like.
I, CHARLES WILLIAM ROBINSON, of Ashgate Road, Chesterfield, in the County
of Derby, Cardboard Box 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:-
3
This invention relates to the manufacture of reels, spools or bobbins from paper
and cardboard or similar material which may be used for the purpose of holding
sewing silks, cottons, threads and the like..The reels at present in use are made
from wood and are very heavy in comparison to the weight of silk or cotton which
they carry, thus adding greatly to the cost of carriage from the manufacturer to
the consumer. I am aware that reels have previously been made from paper
but they have proved either too flimsy or too expensive to manufacture.
.
The object of this invention is to provide, a paper reel or bobbin which shall be
at once strong, light in weight and easy of manufacture.
In the drawings lodged with my Provisional Specification Sheet 1 illustrates the
method of manufacture and Sheet 2 ways in which the punches or chucks and moulds
may be mounted.
A in Figure 1 represents a tube which is made of several turns of paper firmly
pasted together and which is to form the sides or walls of the reel or bobbin. This
is placed in a mould B Figure 2 so that both ends project short distance from
the face of the mould B. Figure 3 represents a front elevation of the mould B
which is in halves to facilitate the removal of the tube. F F are two pins fixed
into the bottom half of the mould so that the top half may be rapidly and
accurately placed on to the bottom half after the insertion of the tube, A. The
bottom half is screwed on to the bed of the machine as shown in Figures 8, 9.
and 10.
E E are two screw clamps by the moving of which through one quarter of a
turn the top half of the mould may be released or screwed down tight as the case
may be.
The hole in the mould B is of such diameter as to hold the tube A tight
without crushing it. The mould B has also at both ends an annular groove P
concentral with the hole in the mould.
Two heated stamps C and D concentral with the hole in the mould are then
brought to bear on the tube, having bevelled edges as shown, thus forcing the sides.
of the tubes open or bulging the same until the annular grooves P P are reached
when the stamps are withdrawn. The tube will then appear as shown in section in
Figure 2.
This tube with the ends enlarged as described is now taken from the mould B
and placed in a second mould B₁, similar to the first but in connection with two
other stamps G and H working in a similar manner as the first two. First of all
a disc of cardboard or other material as shown at J Figure 5 which has been
previously stamped, punched and printed on if necessary is placed in such a
manner upon the peg projecting from the stamp G that the raised up side of the
disc J is next to the stamp G. G and H now advance simultaneously G pressing
the top into the enlargement of the tube at one end as shown at J. The annular
groove Q in the stamp H turning the enlargement at the other end of tube
over and inwards. The disc J should fit tightly into the enlargement so as to
leave the punch when the latter is withdrawn. The partially finished bobbin
will now appear as shown in section in Figure 4.
-
The partially finished bobbin is now placed into a third mould B2 similar to

page_text: B and B but in connection with two other heated stamps K and L. On the
advance of the stamp K the edges of the enlargement will be turned inwards
and over the disc J by the annular groove R thus firmly fastening the same in
as at J and also perfecting the flange T. At the same time the stamp L advances
until the end N which exactly fits the disc and the inside of the tube, reaches
the disc J just as the enlargement is being turned on to and over the disc J, thus
preventing the disc J being burst inwards by the impingement of the turned in
edges of the enlargement and also insuring the perfect finish of the end J.
the same time as the stamp L is advancing, the annular set off and groove M
presses upon the turned in portion at the open end of the tube, thus firmly com-
pressing the same as shown at S. On the stamp being withdrawn the finished
bobbin will appear in section as in Figure 6 and in elevation as in Figure 7.
At
In this case one end of the bobbin has been left blank, i.e. without any end disc,
in order to facilitate the fixing of the bobbin on to the spindle of the winding
machine. Should however, a bobbin with two ends in be preferred the manu-
facture can be accomplished as follows:-
The operation of manufacture illustrated in Figures 1 and 2 are the same for
a bobbin with two ends as with one. In Figure 4 instead of the stamp H on the
one side a similar one to G will operate on which stamp a disc similar to J is placed.
The tube when supplied with the discs by the stamps will have both ends similar
in appearance to the one end J' in Figure 4.
The tube is now transferred to mould B2 where a stamp similar to K will take
the place of stamp L, the operations will be same as those described in connection
with the stamp K. The discs however, in this case should be stronger than is
necessary in the case where the bobbin is to only have one end as the discs can
have no support inside the bobbin to withstand the impingement of the turned in
edges of the enlargement.
The finished bobbin will then appear in section as shown at Figure 11 and in
elevation as at Figure 7.
· Instead of heated stamps, revolving chucks or tools of the same section may be
used.
Figure 8 Sheet 2 represents the front view and Figure 9 the end view of a very
convenient method in which the stamps and moulds may be mounted where heated
stamps are used.
The mould is the same as shown at Figure 3 Sheet 1 and is screwed down to
the bed of the machine. The stamps are mounted on to slides a section of which
appears at Figure 9. The motion to the stamps is imparted by means of the
arms a a which may be connected with any convenient mechanism for producing
a reciprocating motion.
Figure 10 represents a convenient way in which revolving chucks or tools and
moulds may be mounted where revolving tools are used. b b are belts driving in
opposite directions the spindles into which the tools are screwed.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:
1
1. A. bobbin of cardboard or similar material composed of a tube enlarged at its
ends and having both enlarged ends doubled over and inwards so as to form exterior
flanges around the ends of the tube and one or both ends closed by a disc held in
place by the turned over end overlapping its edges substantially as described.
2. The herein before described process of manufacturing bobbins of cardboard
or similar material consisting in first enlarging the diameter of both ends of a
tube of the material then bending over and inwards one enlarged end and inserting
a disc into the other end, afterwards bending over and inwards this other enlarged
end so as to make it grip the outer edge of the disc and simultaneously flattening
down both turned over ends so as to form them into flattened exterior flanges
substantially as described.

page_text: 3. The herein before described process of manufacturing böbbins of cardboard
or similar material consisting in simultaneously enlarging the diameter of both
ends of a tube of the material then inserting a disc into each end and afterwards
simultaneously bending down and turning over and inwards both ends so as to
make them grip the outer edges of the discs and form exterior flanges around
the ends of the tube substantially as described.