Improvements in or relating to the Shuttles of Swivel Looms.
Year: 1895

page_text: Date of Application, 18th May, 1895
Complete Specification Left, 20th Nov., 1895-Accepted, 21st Dec.,
1395
PROVISIONAL SPECIFICATION.
Improvements in or relating to the Shuttles of Swivel Looms.
I, EDWARD BARLOW, of Home House, Chapelfield, Radcliffe near Manchester,
in the County of Lancaster, Manufacturer, do hereby declare the nature of this
invention to be as follows :—
My invention relates to improvements in the shuttles of swivel looms and the
chief object of my invention is in the case of polished cotton and hard silk
particularly, to prevent the thread from coming over the flanges of the bobbin
when weaving, or getting locked on the pin of the shuttle, and further to thread
the shuttle with greater facility than can now be effected.
I employ a shuttle of the usual construction or of slightly modified construction,
preferably with the usual tension spring, so that slots made in the shuttle, or in a
bracket attached to it, serve to carry a pair of drag wires one placed above the
other and parallel to the spindle of the bobbin of weft; when weaving the thread
is drawn off the shuttle intermittently and passes between these drag wires to the
cloth and is thereby maintained under a slight but constant tension sufficient to
prevent it coming off over the flanges of the bobbin or from locking on the pin of
the shuttle.
In order to put a pin or pirn of weft into the shuttle or to piece a broken end a
shuttle hook is pushed between the drag wires the upper one of which lifts readily
in the slots and falls immediately on the thread when the shuttle hook is removed.
These drag wires offer no injurious resistance to the passage of the thread from
the shuttle but allow it to pass fieely into the shed of the fabric being woven.
Dated this 17th day of Mo 1895
H. B. BARLOW & GILLETT,
Agents for Applicant.
Improvements in or relating to the Shuttles of Swivel Looms.
I, EDWARD BARLOW, of Home House, Chapelfield, Radcliffe, near Manchester,
in the County of Lancaster, 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 :-
My invention relates to improvements in the shuttles of swivel looms and the
chief object of my invention is, in the case of polished cotton and hard silk
particularly, to prevent the thread from coming over the flanges of the bobbin
when weaving, or getting locked on the pin or spindle of the shuttle.
I employ a shuttle of the usual construction or of slightly modified construction,
preferably with the usual tension spring, so that slots made in the shuttle, or in a
bracket attached to it, serve to carry a pair of clutch or drag wires one placed
above the other and in the case of a horizontal pirn parallel to the spindle of the
pirn of weft. When weaving the thread is drawn off the shuttle intermittently and
passes between these drag wires to the cloth.
And in order that my invention may be fully understood and readily carried into

page_text: effect I will describe the accompanying sheet of drawings reference being had to
the figures and letters marked thereon.
Fig. 1 is a transverse section of a swivel shuttle to which my improvements are
applied and Fig. 2 is a plan view of the same partly in section.
a is the body of the shuttle in which is fitted a pirn or bobbin of thread b, on a
spindle c, and d is the spring which acts upon the tension brake or wire e pivoted
to the shuttle as usual; the foregoing parts are of the ordinary or any convenient
construction.
My improvements consist in applying to the shuttle a pair of drag or clutch
wires f, g, which in this instance are supported in a pair of staples secured to the
body of the sbuttle.
On referring to Fig. 2 it will be seen that the lower wire frests upon anl is
preferably secured by the staples h, although if preferred it might be allowed to
move upon its axis; the upper wire is free to move up and down and also to
rotate upon its axis but is prevented from moving endwise by a recess in the body
of the shuttle; the thread from the pirn or bubbin passes between these wires on
its way through the usual eye to the shed in the fabric being woven.
In swivel looms with shuttles of the ordinary construction it is not found
practicable to weave with full pirns or bobbins of polished cotton or hard silk
owing to the elasticity of the thread which causes it, when the shuttle is thrown
from the shed, to spring over the flanges of the pirn on to the spindle c where the
thread is liable to get locked; this difficulty arises chiefly through the sudden
plucks or jerks to which the thread is subjected at each throw or movement of the
shuttle and which cause the pirn to overrun the thread thus leaving the thread
momentarily slack between the pirn and the cloth.
The action of my clutch or drag wires upon the thread is such that the weft is
prevented from becoming slack between the drag or clutch wires and the pirn and
in this way the thread is maintained somewhat taut and the pirn turns only
sufficiently to allow the length of thread put into the shed to come off it.
The friction of the thread passing between the wires causes the upper wire g to
rotate but the drag put upon the thread is in no sense injurious the wires simply
acting to prevent any slack thread getting over the flanges or to the spindle so as
to become spindle locked.
By the application of the drag or clutch wires to a swivel shuttle I am enabled
to fill the pirns full of polished cotton, hard silk, or other fibre and weave the same
without difficulty.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
The arrangement use and application of a pair of drag or clutch wires f and g
or their equivalents substantially as and for the purposes herein set forth.
Dated this 19th day of November 1895.
H. B. BARLOW & GILLETT,
17 St. Ann's Square, Manchester, Agents for Applicant.