Improvements in Looms for Weaving Textile Fabrics relating to Checking the Shuttle and Picker.
Year: 1888

page_text: Date of Application, 13th Apr., 1888°
Complete Specification Left, 14th Jan., 1889
Complete Specification Accepted, 16th Mar., 1839
Improvements in Looms for Weaving Textile Fabrics relating to
Checking the Shuttle and Picker.
We HARGREAVES HELM, 14 Alma Street, Padiham, in the county of Lancaster,
Loom-overlooker, and ALFRED BRIDGE, 12, Hambledon Street Padiham, in the
county of Lancaster, Weaver, do hereby declare the nature of this invention to be as
follows:-
We fix a lever or bracket of metal, or any suitable material, to one side of the
shuttle-box, in such a manner as to prevent the picker from returning to the outer
end of the shuttle-box till it is driven there by the shuttle; and we fix a spring to
this lever or bracket so as to cause the lever or bracket to press against one side of
the picker, and also at the same time to press-in the ordinary swell of the shuttle-box.
By this arrangement we get a compound check for shuttle and picker, and
dispense with the check straps.
HARGREAVES HELM.
ALFRED BRIDGE.

page_text: Checking the Shuttle and Picker.
We, HARGREAVES HELM of 14 Alma Street Padiham, in the County of
Lancaster, tackler and ALFRED BRIDGE of 12 Hambledon Street, Padiham, in the
County of Lancaster, Weaver 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 looms for weaving textile fabrics and consists in improved
arrangements or mechanism for checking the picker in its return movement to the
outer end of the shuttle box and for checking the shuttle when running into the
shuttle box, the object of our invention being to arrest the motion of the shuttle
and picker gradually and efficiently so as to prevent the rebound which occurs with
the arrangements ordinarily used, and weakens the next pick and causes the weft to
become slack and curl, whereby faulty selvedges and breakages of the threads are
occasioned. For this purpose we arrange a lever at one side of the shuttle box in
such a manner as to prevent the picker from returning to the outer end of the
shuttle box till driven there by the shuttle and connect a spring to said lever so as
to cause the spring to press the lever against one side of the picker and also at the
same time to press inwards the ordinary back-swell of the shuttle box. By this
, arrangement we obtain a compound check for shuttle and picker and dispense with
the check straps.
On the sheet of drawings appended hereunto we show one way in which our
said invention can be carried out,
Fig. 1, showing a front view of a shuttle box with our improvements applied
thereto.
Fig. 2, a top view of the same and
Fig. 8, a back view.
с
The lathe or slay bottom a fixed to the sword has the shuttle box frout c and
shuttlebox back d with top rib d' attached to it. The picker e slides on the picker
spindle which is carried by the bracket f¹ and the spring i. These parts and the
buffer g and strap are arranged in the ordinary manner and their arrangement
forms no part of our invention. To the back of the shuttle box we attach a
bracket or its equivalent in which a pin is fixed. The bent lever m can oscillate
on this pin. One end m' of it projects in a slanting direction into the shuttle box
as shewn on fig. 2 and arrests the picker e in the position el shewn in dotted lines
when the picking band pulls it back. In the other end m² of the lever m a stud n
is fixed by means of a set screw ' and has fixed and coiled upon it a spring o fitted
with an adjustable sliding shoe p which presses upon the backswell 7. The
latter swivels on the pin in the bracket s fixed to the back d; this arrangement
heing the ordinary one, but the ordinary back spring for pressing the backswell
against the shuttle is dispensed with, the spring o taking its place. By turning the

page_text: to determine
A buffer u of
stud n round and fixing it by means of the set-screw n' in the end m², the pressure of
the spring can be regulated. A stop t is bolted upon the bracket
the position of the lever m when the shuttle box is empty as shewn.
hent leather or its equivalent is placed upon the picker spindle at the end of the
shuttle box as an additional check and the ordinary check strap is dispensed
with.
When the shuttle runs into its box, it drives the picker e before it, and the picker
pushes the lever end m¹ back, whereby the lever m is turned on the pivot and the
end is brought nearer to the back of the shuttle box and the pressure of the
spring o and shoop upon the backswell q is the more increased, the more the shuttle
advances into the box, so that the shuttle reaches the end of its run quietly. From
the nature of the arrangement there can be no rebound of the lever m¹ capable of
moving the picker on its spindle and both picker and shuttle remain in their outer-
most position, whereby the evils hereinbefore pointed out as occurring with tho
ordinary arrangements are obviated.
We do not confine ourselves to the arrangement shown on the drawing or its
details, which may be varied or replaced by their mechanical equivalents. For
instance, the lever end m² may be prolonged till it extends behind the end of the
backswell on which the shoe p is shewn resting on the drawings, and a helical
spring inserted between the backswell and lever m² instead of the spring o shewn on
the drawings.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is, in looms for weaving,
Firstly, the general arrangement of mechanism for checking the shuttle and
picker herein before described and illustrated on the drawings.
Secondly, a lever arranged on one side of the shuttle box and held by spring
pressure in such a position that it prevents the picker from returning to the outer
end of the shuttle box till it is driven there by the shuttle, substantially as herein-
before described.
Thirdly, a lever arranged on one side of the shuttlebox and pressed against the
picker, when the latter is driven by the shuttle to the end of the box, by means of
a spring which at the same time presses the backswell inwards against the shuttle,
substantially as hereinbeforo described and for the purpose set forth.
Fourthly, a spring arranged so as to press simultaneously the backswell inwards
against the shuttle and a lever against the picker, substantially as hereinbefore
described and for the purpose set forth.
Fifthly, the combination of the lever m vibrating on pin in bracket with the
coiled adjustable spring o, shoe p, stop t and the backswell 7, substantially as
hereinbefore described and illustrated by the drawing.
Dated this 12th day of January 1889.
EMMOTT & Co.,
Agents for the Applicants.