Improvements in Protector Hoops and Ferrules for Application to Ring, Twist, and Weft, and Weavers' Bobbins.
Year: 1893

page_text: Date of Application, 15th Apr., 1893
Complete Specification Left, 15th Jan., 1894-Accepted, 17th Feb., 1894
PROVISIONAL SPECIFICATION.
Improvements in Protector Hoops and Ferrules for Application to
Ring, Twist, and Weft, and Weavers' Bobbins.
I HERBERT WILLIAM WILSON of Wilson Brothers Limited, of Cornholme,
Todmorden, in the County of Lancaster, Bobbin Manufacturers, do hereby declaré
the nature of this invention to be as follows:-
My said invention relates to an improved form of protector hoops and ferrules
for application to ring twist and weft and weavers' bobbins. The forms of hoops
and ferrules are such as are referred to in prior Patents Nos. 2986/80, 1772/81 and
19253/89, and my present invention relates to improvements upon such types of
hoops and ferrules as are there described.
In carrying the said former inventions into effect the metal hoops and ferrules
have been made with a flanged or turned up or turned in, plain edge, which has been
forced into a recess in the bobbin when the hoop was being applied.
In some cases the hoops have become loose upon the bobbin thereby causing bad
spinning and loss from breakage.
To remedy this defect I form the said flange or edge with teeth or projections or
otherwise I might make it of a serrated form so that when the hoop or ferrule is
applied to the bobbin the teeth are forced into the substance of the bobbin and the
hold of the hoop upon the bobbin is rendered more secure.
The recess usually cut to receive the plain edge or flange may be either entirely
dispensed with or a very slight groove will be sufficient.
The improved hoops or ferrules may be made in any suitable manner by stamping
or spinning, the teeth or projections in the edge or flange being preferably formed
in the course of manufacture.
11000
E. K. DUTTON & Co.,
5, John Dalton Street, Manchester, Agents.
COMPLETE SPECIFICATION.
Improvements in Protector Hoops and Ferrules for Application to
Ring, Twist, and Weft, and Weavers' Bobbins.
I HERBERT WILLIAM WILSON of Wilson Brothers Limited, of Cornholme,
Todmorden, in the County of Lancaster, Bobbin Manufacturers, 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 and
accompanying drawings:-
My said invention relates to an improved form of protector hoops and ferrules
for application to ring twist and weft and weavers' bobbins.
The forms of hocps and ferrules are such as are referred to in prior Patents
Nos. 2986/80, 1772/81 and 19253/89, and my present invention relates to improve-
ments upon such types of hoops and ferrules as are there described.
In carrying the said former inventions into effect the metal hoops and ferrules
have been made with a flanged or turned up or turned in, plain edge, which has
been forced into a recess in the bobbin when the hoop was being applied.

page_text: In some cases the hoops have become loose upon the bobbin thereby causing bad
spinning and loss from breakage.
To remedy this defect I form the said flange or edge with teeth or projections
or otherwise I might make it of a serrated form so that when the hoop or ferrule
is applied to the bobbin the teeth are forced into the substance of the bobbin and
the hold of the hoop upon the bobbin is rendered more secure.
The recess usually cut to receive the plain edge or flange may be either entirely
dispensed with or a very slight groove will be sufficient.
To render my invention more easily understood I have attached hereunto a sheet
of illustrative drawings to which I will refer in the course of my detailed explanation
of the invention.
Fig. 1 is a view partly in section of a ring twist bobbin fitted with my improved
serrated hoop.
Fig. 2 is an enlarged separate view of the improved hoop a before application.
Fig. 3 is an enlarged sectional view of the foot of the bobbin showing the
improved hoop a in position.
Fig. 4 is an end view of Fig. 3, partly in section so as to show the teeth a¹ of the
hoop sunk into the substance of the bobbin.
There is no change in the general character of the hoop a except as regards the
presence of the teeth a¹ on the edge of the upturned flange a². As has been already
stated the edge of this flange a² has heretofore been smooth, and in applying the hoop
to the bobbin it was the custom to cut a groove in the foot or substance of the
bobbin so as to permit the flange edge to enter and be pressed home more easily.
Thus the hoop was only united to the bobbin by frictional adhesion, and when
the wood of the bobbin shrank or when from other causes this intimate contact of
the hoop and the bobbin ceased to exist the hoop became loose on the bobbin thus
causing bad spinning results.
Now however in applying my improved hoop I find it unnecessary to cut any
entering groove in the foot of the bobbin as the teeth a¹ penetrate easily without
such a groove. Thus I save labour in making the bobbin. Again when the toothed
flange has been pressed home into the substance of the bobbin there is at all times
a greater area of contact between the substance of the hoop and the substance of
the bobbin, so that the hoop does not become so easily loose. In addition to this
the teeth a' act as locking stops so that the hoop cannot possibly turn round even
if its hold upon the bobbin should be slightly diminished. Practically I find that
the toothed edge prevents all turning of the hoop in the bobbin and counteracts the
disadvantages which at present exist when a plain edged hoop is used. The teeth
or projections a¹ on the hoop may be of any convenient number, shape or size. 1
do not limit myself to the type and pitch shown.
Having thus clearly pointed out the spirit and effect of my invention as applied
to a ring twist bobbin as in Figs. 1 to 4 it only remains to refer briefly to the other
types of bobbins shown in the drawings. For example Fig. 5 is a sectional view
of the foot of a ring frame bobbin fitted with our improved "Southwell" boss or
hoop a as described in Specification No. 19253/89. The improvement in the present
instance consists in forming the upturned flange a² with teeth a¹ as shown in the
drawings and forcing such toothed flange into the substance of the bobbin, all as
described with reference to the preceding figs.
Fig. 6 shows a ring weft bobbin, the foot of which is fitted with my improved
tooth flanged hoop a. Fig. 7 is an enlarged section of the foot showing the hoop
with its toothed flange more clearly.
Fig. 8 is a view partly in section of a weavers' bobbin the foot of which is fitted
with my improved toothed hoop a, as in the other cases. Fig. 9 shows a similar
bobbin made with driving slots b. Fig. 10 illustrates a bobbin in which the toothed
hoop a assumes the form of an internal lining, inserted into the foot of the bobbin.
The upturned flange a² is toothed as in the former instances and for the same
purpose viz. to prevent the hoop from turning in the bobbin foot.

page_text: 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.
Forming the protector hoops and ferrules of ring twist, weft and weavers'
bobbins with teeth, projections or irregularities upon or in the edge of the flange or
lip a² which is pressed into the substance of the bobbin, substantially as described
and shown.
A
T
1004
E. K. DUTTON & Co.,
5, John Dalton Street, Manchester, Agents.