An Improved Weft Breaking Device for Loom Shuttles, for Stopping the Loom upon the Occurrence of Warp Floats or Defective Picking.
Year: 1891

page_text: Date of Application, 18th July, 1891-Accepted, 29th Aug., 1891
COMPLETE SPECIFICATION
An Improved Weft Breaking Device for Loom Shuttles, for
Stopping the Loom upon the Occurrence of Warp Floats or
Defective Picking.
We, ELIJAH DIXON, of 112, Church Street, Preston, in the County of
Lancaster, Woollen Merchant, and HENRY CLAYTON, of 4, St. George's Terrace,
in the same town, Waste Dealer, 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 an improved weft breaking device for loom shuttles for
stopping the loom upon the occurrence of warp floats or defective picking and
consists in a modification of the arrangement of apparatus described and illustrated
in the Specification of our prior Letters Patent No. 10,261 of 1887. According
to our said former Specification a pivoted arm working in a horizontal plane in
front of the shuttle peg point was employed in conjunction with a long wire spring
the said spring being so arranged on the upper part of the shuttle that on the
occurrence of a warp float or other obstruction in the "shed" the spring was
depressed and thereby moved the pivoted arm round on its pivot so as to get in the
way of the weft thread and by means of a hook on a vertical part of the arm to
break the weft thread and so cause the stoppage of the loom.
According to this invention we employ a similar long wire spring in conjunction
with a pivoted arm but arrange the arm to move in a vertical plane and by so
doing are enabled to simplify the apparatus and cause it to be more sensitive and
certain in its action.
In order that the nature of our said invention may be better understood we
annex a sheet of drawings in which,
Fig. 1 is a side view partly in section; and
Fig. 2 a plan view of a loom shuttle having our invention applied thereto.
Fig. 3 is a plan view ;
Fig. 4 a side view; and
Fig. 5 a cross section of one end of the shuttle the said Figs. 3, 4, and 5 being
drawn to a larger scale so that the mounting of the pivoted arm and its connection
with the spring may be more clearly apparent.
s is the spring which may be affixed to the shuttle A. by having its end turned
down and driven into the body of the shuttle as shewn at Fig. 1 or it may be
fastened thereto by means of a screw n as shewn at Figs. 6 and 7. The spring s
is formed with a curved part c and the two upper edges of the shuttle are recessed
or hollowed opposite the curved part c of the spring so that the float or other
obstruction may sink into the recessed or hollowed part and thereby depress the
spring which in its normal position has its highest point c (see Fig. 1) preferably
in line with the upper face of the shuttle. The free end of the springs passes
slightly through a hole through the back of the arm or catch finger a the said arm
being pivoted at its upper end on the extremity of a frame or bracket d preferably
made of bent wire and fastened to the body of the shuttle in the manner shewn in
the drawings. The lower or free end of the arm a is formed with a hook b and
notches i for the purpose of more effectively intercepting and catching the weft
thread on its way from the shuttle peg p and thereby to break it. The breakage
of the weft thread thereupon causes the actuation of the ordinary "weft knocking
off lever" and the loom to be stopped in the usual manner.
Fig. 6 is a side view; and
Fig. 7 a plan view of the spring s detached.

page_text: Figs. 3, 4, and 5 in its lowered or depressed position having caused the catch finger
or arm a to be moved round on its pivot so as to stand in front of the shuttle peg
point as shewn in solid lines at Figs. 3 and 5. At Fig. 5 the broken lines indicate
the normal position of the arm a.
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 :-
In a loom shuttle the combination with a spring such as s of a pivoted catch
finger or arm such as a arranged to be moved in a vertical plane in front of the
shuttle peg point by the depression of the spring substantially as described and
shewn in the drawings for the purpose set forth.
Deted this 18th day of July 1891
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicants.