Improvements in Bobbins Used in Textile Manufactures.
Year: 1899

page_text: Date of Application, 30th Dec., 1899 -Accepted, 3rd Feb., 1900
COMPLETE SPECIFICATION.
Improvements in Bobbins Used in Textile Manufactures.
We, JOSEPH TIBBETTS WARD, of No. 18, Church Street, and JOHN BLAISDELL
CURTIS, of No. 78, Main Street, both in Chicopee Falls, in the County of Hamp-
den and State of Massachusetts, United States of America, Mechanical Engineers,
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 bobbins of the class generally used on spinning and
other analogous machines used in cotton and other mills in working textile
materials, the object being to provide an improved bobbin so constructed that
the wilful waste, by operatives, of yarn contained thercon, by cutting and strip-
ping off the same when it should be wound from the bobbin in the regular way,
is made difficult or entirely prevented:
And the invention consists in providing a bobbin of said class having a yarn-
receiving body whose surface consists of alternate sections of wood and metal
arranged, preferably, in uniform planes, whereby an armor is provided for the
bobbin which constitutes such an element of obstruction to the use of a point
of a knife-blade upon the yarn, and against the surface of the bobbin, as pre-
vents said waste of yarn, and whereby the said object is attained, all as herein-
after fully described and more particularly pointed out in the claims.
In the drawing forming part of this specification,-
Figure 1 is a side elevation of a bobbin shown supported on the spindle and
embodying our improvements, this figure illustrating, in side view and in section,
a certain quantity of yarn wound upon the bobbin, the yarn showing the effects
of a knife-cut near the upper end of the bobbin, both upon the latter and on
the yarn.
Figure 2 is a longitudinal section of the upper end of the bobbin and a side
view of the end and point of a knife-blade, when applied to cut yarn from the
bobbin, as above set forth.
Figure 3 is a sectional view on line 3-3, Figure 1.
Figure 4 is a perspective view of one of the rings constituting the armor
element of the bobbin.
Referring to the drawing, 2 indicates the bobbin which is preferably of wood,
as is usual, and of the ordinary construction, excepting as to said armored
element or elements.
The improvements forming the subject-matter of this application, whereby
the above stated object is attained, consists in applying metallic ring-shaped
elements to that portion of the surface of the bobbin upon which yarn is wound
in the regular course of usage, the preferable mode of arranging and applying
said armored elements being as follows:-
One or more flat, metallic split-rings 4, (preferably of the form shown) are
fixed in the surface of the bobbin, as is illustrated in Figures 1 and 2, said
split-rings being preferably set in circular grooves 3, formed around the surface

page_text: of the bobbin, the outer surfaces of said rings being in the plane of the bobbin-
surface, to the end that the yarn which shall be wound thercover shall present
no inequality of surface.
The said grooves 3, in which said split-rings 4 are placed, are formed as a part
of the process of turning and forming the body of the bobbin, and hence they
add little or nothing to the cost thereof. Said armor-rings 4, are located on the
part or parts of the bobbin on which the yarn 5 is wound, in order that they
shall be covered thereby, as shown in Figure 1.
Said split-rings are made from elastic spring metal, preferably from strips
of flat sheet steel, and having end-borders as nearly at right-angles to the outer
surface of the ring as is practicable, in order that said borders may present an
acute outer corner which serves to quickly arrest the movement of a yarn-cutting
blade C, (see Figure 2) of a knife thereagainst, when the latter shall be brought
to a position, substantially as there illustrated.
In placing said rings on the bobbin, as shown, they are sprung open and
passed over the end of the bobbin and being slid downwardly, opposite said
grooves, they are permitted to retract and take their places therein, as illus-
trated in Figures 1 and 2, and when so placed they are there retained by the
spring-action thereof against the base of said grooves.
The circumferential length of said rings is such that when they are engaged
in said grooves on the bobbin, their extremities do not abut, but are held slightly
apart, so that the ring shall continually have a spring-engagement with the
bobbin.
The wilful waste of yarn referred to above, which this invention serves to
obviate, is practised by the mill operatives upon bobbins which contain a com-
paratively small amount of yarn through their inclination to avoid the care and
attention which said bobbins require in order to effect the utilization of the yarn
thereon by winding it off from the bobbin in the usual way. And, therefore,
to quickly and surreptitiously remove said yarn therefrom, it is their practice
to cut the yarn (as partially shown at A, Figure 1) by drawing a knife longi-
tudinally against the side of the bobbin, as indicated in Figure 2, and thus so
cutting through the yarn 5 from the upper end thereof to the lower one that
it can be instantly stripped from the bobbin and disposed of as waste.
Said rings around the bobbin constituting said armor also serve to protect the
bobbin from the injury to which it is subjected by the cutting action of said
knife, as indicated by the slits or grooves B, (Figures 1 and 2) one of which
grooves is formed each time that the knife is so used, until the body of the
bobbin, when containing no armor, becomes so cut on that portion thereof on
which yarn has been wound that it becomes practically ruined thereby.
The application of said armor-rings 4 to a bobbin, as described, serves also to
materially strengthen the part of the bobbin on which the yarn is wound, and
to thus add to the durability thereof.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that
what we claim is:-
1. A bobbin for use in textile manufactures having a yarn-receiving body
whose surface comprises alternate sections of wood and of metal, substantially
as set forth.
2. A bobbin for use in textile manufactures having a yarn-receiving body
whose surface comprises alternate sections of wood and of metal arranged in
uniform planes, substantially as set forth.
8. A bobbin for use in textile manufactures having a yarn-receiving body
around which are secured one or more rings of flat metal which, together with
the adjoining exposed surface-parts of the bobbin constitute alternate sections
of wood and metal, substantially as described.
A bobbin for use in textile manufactures having a yarn-receiving body

page_text: around which are secured one or more rings of flat metal in grooves around said
body, the surfaces of said body and rings being in uniform planes, substantially
as set forth.
Doted this Flavonth day of December 1899.
JOSEPH TIBBETTS WARD.
JOHN BLAISDELL CURTIS.
Haseltine, Lake & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicants.