Improvements in Ring Frame Bobbins and in Apparatus Used in the Manufacture of the same.
Year: 1887

page_text: Date of Application, 30th June, 1887
Complete Left, 8th Feb., 1888
Complete Accepted, 9th Mar., 1888
Improvements in Ring Frame Bobbins and in Apparatus Used in
the Manufacture of the same.
JACKSON COWARD of Skelwith Bridge near Ambleside in the County of
Westmorland Bobbin Manufacturer do hereby declare the nature of this invention to
be as follows:-
The object of my invention is to apply a strengthening ring or ferrule of metal
to the base of such bobbins without weakening the wooden tube of which the hobbin
is composed.
According to my invention I turn the base of the hobbin rather thicker in diameter
than the barrel or tube, with a slightly rounded conical shoulder; so that the base is
rather stronger than usual.
And instead of turning a groove in such thickened base to receive the metal ring or
ferrule (as sometimes practised) which weakens the tube at this part I merely score
therein two slight circular indentations one at the top and the other at the base of the
rounded conical shoulder.
1 then take a thin metal ring of a conical form and pass the same over the nose of
the bobbin and down the tube until it rests upon the said rounded conical shoulder
and by means of the apparatus hereinafter described (or by analogous means) I
contract the upper and lower edges of the said metal ring and force them into the
indentations previously made in the base of the tube as above described; by which
means I strengthen the base of the wooden tube or bobbin by means of a rounded
metal ring or ferrule which has no projecting edges to catch the yarn without
weakening the tube by grooving or otherwise reducing its diameter.
The apparatus which I employ for contracting the upper and lower edges of the
conical metal ring or ferrule so as to force them into the indentations and so fix
the ring firmly in its place consists principally of two conical dies, the lower one of
which is fixed in an anvil or other convenient support, and is made or fitted with a
central plug.
This plug enters and supports the interior of the bobbin, which is placed thereon
with its base downwards with the conical ring in its place.

page_text: Upon the tube or bobbin the reversed conical die is then placed, its lowest conical
edge being supported by the upper edge of the conical ring.
A hollow punch being then placed over the upper die and struck with a hammer
the action of the two conical dies will contract the upper and lower edges of the metal
ring inwards and force them into the circular indentations of the tube and thus the
ring is fixed, and at the same time rounded or curved in section.
Dat this outh day of June 1887
GEORGE DAVIES,
4, St. Ann's Square, Manchester,
Agent for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in Ring Frame Bobbins and in Apparatus Used in
the Manufacture of the same.
I JACKSON COWARD, of Skelwith Bridge near Ambleside in the County of
Westmorland Bobbin 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 :-
The object of my invention is to apply a strengthening ring or ferrule of metal to
the base of such bobbins without weakening the wooden tube of which the bobbin is
composed.
The nature of my invention will be readily understood on reference to the annexed
sheet of drawings and to the following explanation thereof.
Fig. 1. shows a ring frame bobbin in an unfinished state ready for the application
of a strengthening ring as indicated by dotted lines.
Fig. 2 shows the said ring detached.
Fig. 3. is an elevation partly in section of the apparatus for fixing the strengthening
ring on the bobbin.
Fig. 4. is a similar view of the dies for finishing the attachment of the ring to the
bobbin.
Fig. 5 is an elevation of the finished bobbin.
According to my invention I turn the base of the bobbin rather larger in diameter
than the barrel or tube of a slightly rounded conical form so that the base is rather
stronger than usual, and instead of turning a groove in such thickened base to receive
the metal ring or ferrule (as sometimes practised) which weakens the tube at this part,
I merely score two slight indentations as shown at A. and B Fig. 1. near the base of
the bobbin.
I then take a thin metal ring (preferably of steel) of a conical form as shown in
Fig. 2. and pass the same over the nose of the bobbin, and down the tube as shown
by the dotted lines at c Fig. 1. until the smaller end of it slips into the upper
indentation marked A, and is in the position shown at D Fig. 3.
I then by means of the apparatus hereinafter described (or by analogous means)
contract the upper and lower edges of the said metal ring, and force them into the
said indentations A & B, near the base of the bobbin.
The apparatus which I employ for the above purpose consists principally of two
conical dies E and F Fig. 3. the lower one E being fixed in an anvil or other con-
venient support and is made or fitted with a central plug G. This plug enters and
supports the interior of the bobbin which is placed thereon with its base downwards,
with the conical ring slipped into its place as shown at D and entering the conical
part of the die. The reversed or upper die F is then slipped over the tube or hobbin
till it rests on the upper part of the conical ring.
.
A hollow punch H being then placed over the upper die as shown in Figs. 3 and 4
(or if preferred it may be fixed to the die) and struck with a hammer, the action of

page_text: the two dies will be to contract the edges of the conical ring (especially the lower
edge) inwards, and force them into the circular indentations.
The bobbin is then placed in a similar pair of dies but having rather smaller cones,
as shown in Fig. 4. and on striking the punch as before, the dies will still further
contract or compress the ring or ferrule, and force it into the indentations, so as not to
project above the body of the bobbin, as shown in Fig. 4.
The bobbin after this second compression of the ring is shown in Fig. 5.
If preferred the dies may be forced together by a lever or other mechanical
arrangement instead of by a hammer. By the above means I fix in place the metal
ring or ferrule which has no projecting edges to catch the yarn, without weakening
the tube by grooving it or otherwise reducing its diameter.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what I
claim is
1. The combination with a wooden ring frame bobbin of a metallic strengthening
ring formed and applied in the manner hereinbefore particularly described and
illustrated by the drawings annexed.
2. The improved apparatus to be used in the manufacture of such bobbins for
contracting and fixing the metallic strengthening rings consisting principally of an
upper and lower conical die, the lower one of which is provided with a short plug
fitting inside and supporting the wooden bobbin during the compression as berein-
before described and illustrated by Figs. 3 and 4 of the drawings annexod.
148 741 dive at Fury 1888
GEORGE DAVIES,
4, St. Ann's Square, Manchester,
Agent for the Applicant.