IMPROVEMENTS IN LOOMS FOR WEAVING
Year: 1880

page_text: PROVISIONAL SPECIFICATION left by Henri Adrien Bonneville at the Office
of the Commissioners of Patents on the 9th February 1880. A commu-
nication from Stéphane Wibaux, Manufacturer, and Floris Mahieu, Weaver, both
of Roubaix, France.
HENRI ADRIEN BONNEVILLE, of the British and Foreign Patent Offices, 18, Rue
de la Chausseé d'Antin, Paris, France, and 5, Piccadilly, in the County of Middlesex,
Patent Agent.
"IMPROVEMENTS IN LOOMS FOR WEAVING." A communication
from Stéphane Wibaux, Manufacturer, and Floris Mahieu, Weaver, both of
Roubaix, France.
The Invention relates to stopping a power loom for weaving, with several shuttles on
cach side, when the weft happens to break, and consists, 1st, in presenting any index-
finger or needle under the existing wefts not yet tied at the moment when a nick is
about to be thrown out in order to withdraw them from their position before the
fork; 2nd, in presenting during the brief instant when there is no weft before the
fork a small nut to take the place of the thread, and thus prevent the thread-fork
from working; 3rd, in withdrawing the nut when the weft is thrown out, the latter
acting thenceforth alone on the weft-fork; 4th, in taking down again afterwards
all the wefts lifted up; 5th, in lifting up again those which are not to be tied, and
so on, in such a way that in any case the only weft thrown out finds itself in
presence of the weft-fork, and can cause it to operate if necessary.
Both mechanically and in practice the Invention is illustrated in the accompanying
Drawings.
On the driver at the two ends of the slay-board is placed an apparatus consisting
of a sheath A provided with a blade-spring B and placed next to the grate D, which
is to pass through the fork C of the weft-fork when a weft happens to break.
Next to and behind the said grate D is a bolt-rod E; the said rod is fastened to
the bottom of the shuttle box by means of a lash and a spiral spring F which tends
to fasten the bolt behind the grate; a rod H placed in the sheath is fastened to a
jointed lever I oscillating at K when the key M comes in contact with au
abutment N, causing the lever and the rod H to take up the three positions X, X',
X", Fig. 3, resulting from the combined movements of the driver to which all the
mechanism is fastened. The fork of the weft-fork J and the unlocking lever P,
set in motion by an abutment Q on the driver, aro ready to operate when the
fork not held back by the weft hooks a notch O into the notch O¹ of the lever.

page_text: By means of this combination it is easy to understand what takes place during
the working of the loom.
When a first weft is thrown out on coming into the box opposite a pressure is
exercised on the end thereof, the bolt E is drawn back, and no longer supports the
fork of the weft-fork, which rests on the weft thrown out.
A second weft starts from the same side. If these two wefts are together they
will both have to break to bring the weft-fork into operation, but in the forward
movement of the driver the key M has slidden on to the groove of the abutment
and causes the rod H below the wefts to rise up, and consequently to draw along
with it in its upward movement the wefts thrown out; at this moment the bolt
resumes its position in order to replace the weft. The movement of the driver
continues, the key slides on to its abutment, the rod presses the spring B and passes
over it; the wefts are then completely disengaged and replaced by the bolt, the
driver is carried back, and then the back of the key strikes against the abutment,
the key is lowered and puts the wefts back in place. During this time the shuttle
is driven on, the nut is withdrawn and replaced by the weft thrown out; the
needle H rises again, drawing with it the slays not tied, and so on. The weft fork
thus remains always either in presence of the bolt when the weft is not yet entirely
thrown out, or of the weft when the latter is at the end of its course.