Improvements in or connected with Shuttleless Power Looms.
Year: 1898

page_text: Date of Application, 14th Nov., 1898-Accepted, 17th Dec., 1898
[Communicated from abroad by CAMILLE BRUN and GUSTAVE BRUN, of 19, Rue
Cambon, Paris, in the French Republic, Engineers.]
Improvements in or connected with Shuttleless Power Looms.
I, WILLIAM GEORGE HEYS, of 70, Market Street, Manchester, in the County
of Lancaster, Chartered Patent Agent, 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 shuttleless power looms and its object is to enable
cloths to be woven in several colours and with figured patterns, by means of a
single weft carrier or conveyer.
According to these improvements the weft carrier has engaged with it a
plurality of weft threads. Upon the opening of a shed in the warp, the weft
carrier takes through the shed a selected thread to the opposite side where the
loop of the weft thread is engaged by a selvedge thread from a fixed shuttle and
held by a rising and falling needle until the weft carrier has returned through
the same shed to its starting point. The weft is then beaten up, the shed re-
crossed, and the cycle is repeated. It will be seen that there are two shoots of
weft in each shed.
This invention will hereinafter be more particularly described with reference
to the accompanying drawings in which:-
Figure 1 represents diagrammatically, the weft carrier at the commencement
of its stroke.
Figure 2 similarly represents the weft carrier at the end of its outward stroke.
Figure 3 shews, on an enlarged scale, the end view and a cross section of the
weft carrier.
Figure 4 represents in plan and elevation respectively, the needle by which the
weft loop is engaged and held, as well as its holder.
Figure 5 illustrates in plan, the fixed shuttle and the method of engagement
of the shuttle thread with the weft loop.
Figure 6 represents an end elevation of the weft carrier.
The curved weft carrier D is fixed upon an oscillating blade E, through which
the desired motion can be given to it by means well understood. Through the
free end there is pierced a hole T (Figures 3 and 6), with which there communi-
cates a slot G extending the whole length of the carrier. This slot opens into
the hole in such a manner as to leave a shoulder and so that one side of the hole
further from the shoulder, is even with one side of the slot. In the figures, three
weft threads A, B, C, are indicated, but as many or as few as may be desired may
be employed. All the weft threads to be used are threaded through the hole T,
and, separately, through suitable mails or healds by means of which they may
be lowered and lifted separately as controlled by pattern mechanism or jacquard
cards. If one of the threads be thus lifted, that thread will be carried by the
shoulder of the opening T, across the fabric, as indicated by Figure 2, whilst

page_text: the remaining weft threads are passed by the slot G, and thus are unmoved. At
the end of the race there is fixed a small auxiliary shuttle S, carrying a selvedge
thread F. The loop made by the returning weft interweaves with this thread as
indicated by Figure 5.
To obtain a very even selvedge and to ensure that the loop of the weft is not
pulled within the fabric by the returning weft carrier, the needle c, may be
employed. This vertical needle is fixed upon the horizontal rod M, sliding in
the tube O, in which it is pressed forward by the spiral spring P, arranged within
the tube 0. This tube is itself fixed by means of the eye bracket L to a rod
parallel with the breast beam of the loom and is oscillated at the required
moments by a cam. Thus, as soon as the weft carrier has arrived at the position
indicated by Figure 2, the cam lifts the needle c, so that it enters the weft loop
and remains there until the carrier has returned to the position shewn by
Figure 1. The needle is then lowered by the cam at the moment when the weft
is beaten up.
It is then forced back by the sley, and immediately after the lathe
has retired, it returns to its first position whence it recommences its movement
on the completion of the next outward stroke of the weft carrier as hereinbefore
described.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, as communicated to
me by my foreign correspondent, I declare that what I claim is;-
+
1. In a shuttleless power loom, a weft carrier consisting of a perforated and
slotted bar, constructed arranged and operating substantially as hereinbefore
described and as illustrated by the accompanying drawings.
2. In a weft carrier for a shuttleless power loom, a shouldered perforation and
a slot forming a continuation of one side of the perforation, substantially as and
for the purpose hereinbefore described with reference to the accompanying
drawings.
3. In a shuttleless power loom, the combination and arrangement with a weft
carrier having a shouldered perforation and slot, of mails or healds separately
carrying a plurality of weft threads all of which also pass through the perforation
of the weft carrier, substantially as and for the purpose herein before described
and as illustrated by the accompanying drawings.
4. In a shuttleless power loom in which the weft carrier lays two shoots of
weft in a single shed, a needle operated to engage and hold the weft loop during
the return stroke of the weft carrier, substantially as hereinbefore described and
as illustrated by the accompanying drawings.
5. In a shuttleless power loom in which the weft carrier lays two shoots of
weft in each shed, an auxiliary shuttle carrying a selvedge thread with which
the loop of the weft thread interweaves, substantially as herein before described
and as illustrated by the accompanying drawings.
Dated this 12th day of November 1898.