IMPROVEMENTS IN LOOM-SHUTTLES
Year: 1885

page_text: Now know ye that I, JAMES MAGEE, of Westerly, in the County of Washington,
State of Rhode Island, United States of America, Loom-Fixer, do hereby declare
the nature of my invention for IMPROVEMENTS IN LOOM-SHUTTLES, and in what
manner the same is to be performed, to be particularly described and ascertained in
and by the following statement; reference being had to the accompanying drawings
forming a part of this Specification :—
The object of my invention is to regulate the tension of the thread as it passes
off of the bobbin, and to this end my invention consists in the provision of a weight
acting by gravity upon the thread as it passes from the bobbin and out of the
shuttle.
In order that my invention may be fully understood I will proceed to describe it
with reference to the accompanying drawings, in which
Figure 1 is a plan view of the shuttle with its bobbin and tension roller in
operative position.
Figure 2.is a view, partly in side elevation and partly in vertical section, of one
end of the shuttle showing the tension device in operative position.
Figure 3 is a view similar to figure 2 showing a modified form of tension device.
In the said drawings A designates the shuttle and a its eye. B designates the
bobbin and 1 designates a strand of thread passing off from the bobbin and out
through the eye a of the shuttle.
As my present invention does not particularly relate to the mounting of the
bobbin in the shuttle I think it will suffice to say that the bobbin is mounted on a
spindle which passes longitudinally into the body of the bobbin and which is
hinged at one extremity in the end of the shuttle. The hinge is provided with a
spring which serves not only to hold the spindle in operative position, but also
to hold the bobbin from turning.
When the bobbin is depleted the spindle is raised at its free end and the bobbin
is removed. A full bobbin having been placed on the spindle, the latter is depressed
and held down by its hinge-spring and the outer end of said spring also presses
from beneath into the notch 6 of the bobbin holding the latter from turning or
sliding on its spindle.
I do not confine myself exclusively to the arrangement of the bobbin just
described but prefer it to other arrangements which may be used.

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C, in figures 1 and 2, designates a cylindrical roller which extends transversely
of the shuttle and the ends of which are confined between two inverted U-shaped
straps c. The roller Crests upon an inclined plate or shelf D the pitch of which
is downward toward the free end X of the bobbin. The thread passing from the
bobbin out through the eye is carried beneath the roller C and the platform D.
The particular arrangement of these parts-to which, however, I do not wish to
be understood as exclusively confining myself-is this. The plate D is inserted at
its lateral edges in corresponding recesses in the inner sides of the shuttle. The
forward edge of the plate D is held by screws, as shown, which pass down into
the portion b' of the shuttle. The lower ends of the straps c.pass through the
edges of the plate D and are bent at right angles beneath the said plate.
In figure 3 I have shown a modified form of mounting for the roller C. In this
instance the roller C is provided with a spindle e the extremities of which are
journaled in links E which are in turn pivoted to the inner sides of the shuttle
upon pins or screws e¹. Thus it will be seen that as the thread is fed off of the
bobbin, it will be kept under a constant tension by the roller C and all slack and
knotting will be prevented.
.
I would state that the action of the roller may be accelerated by the use of
springs or other accessories; and this is true in either form of my invention.
Hence I have produced simple and efficient arrangements for exerting tensional
strain upon the passing strand of "thread.
.
I do not wish to be understood as limiting myself exclusively to the use of a
roller as a weight of any suitable form may be employed to press upon the thread.
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
1st An improved tension device for loom-shuttles consisting of a weight mounted
in the shuttle and arranged to rest upon the strand of thread from the bobbin.
2nd The combination with a loom-shuttle, of an inclined plate fixed within the
shuttle, and a cylindrical roller mounted in said shuttle and resting upon said
plate.
3rd The combination with a loom-shuttle, of the plate D, and the roller C,
substantially as described.
4th The combination of the shuttle, the plate D, the straps c and the roller C,
substantially as described.
Dated this 2nd day of February 1885.
JAMES MAGEE.
Haseltine, Lake & Co.,
Agents.
Signed in presence of
JOSEPH A. MILLER, Jr.,.
.Patent Solicitor,
Providence, R.I., U.S.A.