Improvements in Loom Shuttles.
Year: 1893

page_text: Date of Application, 19th Aug., 1893-Accepted, 23rd Sept., 1893
COMPLETE SPECIFICATION.
Improvements in Loom Shuttles.
We, STEPHEN MERRIHEW HAMBLIN, of New Bedford, Massachusetts, U.S.A.,
Inventor, and EDWIN STETSON DAMON, of Plymouth, Massachusetts, U.S.A.,
Attorney at Law, 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:-
Our invention relates to means for threading a loom shuttle, and for producing a
tension on the thread, as it is drawn from the bobbin thereof.
The first part of our invention relates to means for threading a loom shuttle,
whereby the operation is performed manually.
The second part of our invention relates to means for producing any desired
degree of tension on the thread from the bobbin, as it is being drawn through the
delivery eye.
The first part of our invention consists in providing the head of a shuttle with a
horizontal, funnel shaped opening, adapted to admit the thumb and index finger of
the operative, and terminating in a delivery eye, whereby the thread from the
bobbin may be readily passed therethrough by the fingers; and a horizontal thread
way connecting said funnel shaped opening, with an opening in the side of the
spindle cavity.
The second part of our invention consists in providing said shuttle head with an
opening at right angles with, and connecting with said thread way; and a spring
impelled plug, or weight, adapted to move easily in said opening, and bear upon
the thread in said thread way.
In the accompanying drawing,
Fig. 1, is a view of the back side of a shuttle head constructed according to my
invention.
Fig. 2, is a view of the same in vertical longitudinal section.
Fig. 3, is a view of the shuttle head in horizontal longitudinal section, through
the line x, x, of Fig. 1.
Fig. 4, is a view in vertical section of a part of the tension device.
Fig. 5, is a view in vertical section of a part of the shuttle head, showing the
manner of regulating the degree of tension.
Similar letters refer to similar parts in the several views.
a, represents the head of a shuttle body, having an opening b, in the side of the
spindle cavity, of sufficient size to readily admit of putting the thread from the
bobbin through it, by the fingers. d, is a funnel shaped opening in the side of
the shuttle head a, opposite to the delivery eye, and coinciding therewith, and of
a size to readily admit the thumb and index finger of the operative. c, is a
horizontal thread way, connecting the openings b, and d, and preferably reaching
to the central line of the shuttle head.
f, represents a vertical opening in the shuttle head, connecting with the thread
way c, where it ends in a concavity m, in which is preferably secured a bit of
flannel or felt.
g, represents a weight, having, preferably straight sides and a rounded end, and
chambered as at 1, and adapted to have a free vertical movement in the opening f.
s, represents a spiral spring, adapted to be loosely contained in the opening f
, represents a screw threaded plug, adapted to close the outer end of the
opening, and be advanced within said opening to any desired extent.
In operation, the thread from the bobbin is carried through the opening b, in the
side of the spindle cavity, and thence through the opening d, in the direction of
the dotted line, (Fig. 3), by the fingers of the operative, and when pulled through,

page_text: drawn into the thread way c, and under the rounded end of the weight g; and as
the shuttle passes back and forth in the loom, a constant and even pressure or
tension, is exerted on the thread, by said weight and spring. When it is desired to
give a greater tension to the thread, the screw threaded plug h, is advanced in the
opening, thereby compressing the spring s, and causing the weight g, to bear with
greater force on the thread and thus create greater tension.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim, is-
1st. A loom shuttle, having a horizontal opening in the side of its head, in line
with and connecting with the delivery eye thereof, adapted to have the thread
from the bobbin passed therethrough by the fingers of the operative; and having
a horizontal thread-way, in line with the spindle, connecting said opening, with an
opening in the side of the spindle cavity, adapted to have the thread passed through
it by the fingers of the operative, substantially as shown, and for the purpose
described.
2nd. A loom shuttle, having a horizontal opening in the side of its head, in
line with and connecting with the delivery eye thereof; and having a horizontal
thread way
in line with the spindle, connecting said opening, with an opening in
the side of the spindle cavity; and having a vertical opening, connecting with said
thread way, in the track of the thread from the bobbin; a weight, fitting loosely
in said vertical opening, and adapted to press on said thread; a screw threaded
plug, adapted to close the outer end of said vertical opening, and be advanced
therein at certain times; and a compressible spring interposed between said screw
threaded plug and said weight, whereby, when the screw-threaded plug is advanced
or retracted in said vertical opening, the weight g, is caused to bear with greater
or less force on the thread, and thus give the required tension, substantially as
shown, and for the purpose described.
Dated this Seventeenth day of July 1803
STEPHEN MERRIHEW HAMBLIN,
EDWIN STETSON DAMON,
By Allison Bros.,
Agents for the Applicants.