Improvements in Fault-stopping Apparatus connected with Jacquards.
Year: 1893

page_text: Date of Application, 14th Apr., 1893-Accepted, 20th May, 1893
GUMI LEIE DIUITIATION.
Improvements in Fault-stopping Apparatus connected with
Jacquards.
I, WILLIAM JOHN RILEY, of Holker Street Mill, Colne, Lancashire,
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 :-
The improvements relate to fault-stopping apparatus connected with double-
cylinder jacquards, employed in looms for weaving, and have for object the more
effectual automatic stopping of the loom when the cards of the jacquard work out
of proper sequence; and form an improvement upon an invention which is described
in Specification Number 15,582 of 1886.
In the accompanying sheet of drawings,
Fig. 1, shews a side view of portions of a jacquard, with special apparatus
arranged according to my improvements, and Fig. 2, a part of a front view
thereof.
The same letters indicate corresponding parts wherever they occur.
In both figures the ordinary upright wires of the jacquard, and various other
details, are omitted for the sake of clearness.
To accomplish the object of the invention, and to effect my improvements, I
mount suitable journals a¹, attached to the jacquard frame a, which may carry the
spindles, attached to the guide roliers c. c, such as are commonly employed
in connection with Jacquard apparatus, and under or over which guide rollers the
cards d. d', are caused to pass, on their way to the cylinders e. e'.
At, or near, one end of each of these spindles ., I mount, by preference upon
each of such spindles, a wheel or crank disc or arm f. f, which is connected-in
the case shown, by means of a sleeve, passing through the journal a―with a
projecting pin or other protuberance, as 12³, which, being moved, will cause the
wheel or crank disc or arm, ¹, to turn.
To each crank pin 23, a coupling rod or other connection g, is linked,
enabling the wheels or crank discs or arms to work in unison one with the other.
The coupling rod, or other connection is caused to actuate, in its motion to and
fro, one leg of a lever h, suitably fulcrumed at /', and the upper end of such lever
thereby operates a spare or extra upright hook k, so as to press it on or off one of
the lifting grifes.
This hook k, is connected, by any well known means, to the weft fork lever, or
other stopping apparatus of the loom, and on being raised by the grife, will cause
the desired stoppage to take place.
The actuation of the coupling rod or connection is effected in the following
manner.
In a chain of jacquard cards, as ordinarily employed, rods or wires, as shewn at m,
are attached, at intervals, for the purpose of suspending the said cards, in festoons,
from supporting rails, during such time as they are not in use upon or about the
cylinders.
These suspender rods or wires project for some distance beyond the cards, at each
side, and are, according to my improvements, employed, in addition, for the purpose
of actuating the coupling rod or connection g, by coming in contact, during their
passage to the cylinder, with the pins or projections 62 63, which actuate the cranks
or wheels f. f. These pins or projections are so arranged that, as one is in
position for such contact, the corresponding one on the other side is lifted out of
the way of the wires.
As shewn in Fig. 1. the pin 62 is in contact with one of the suspender wires m,

page_text: and, at the next motion of the cards d, will be lifted by such wire until the latter
is freed, when the said pin will have assumed a position similar to that of t³,
and will be, in the same movement, by means of the coupling connection,
brought to its lowest point, ready to engage with the next approaching wire of
the set of cards d'.
At this stage, the coupling rod or connection will have pushed the hook k into
position to be lifted by the grife, and, unless such hook is moved back, the loom
will be caused to stop.
The wires m are so arranged upon the cards, however, that, at the next turn of
the cylinder e', and before the grife has risen to the hook k, the pin or pro-
jection 63, is actuated in a direction contrary to the former one, and the operation,
as herein described, is reversed, the hook k being pressed by the lever h. into its
original position.
It is therefore obvious that so long as the proper sequence of cards is preserved,
the action of a wire on the cards d. will be instantly counteracted by that of a
wire on the opposing set of cards d', but, should the cards be disarranged from
any cause, this reverse action will not take place in time, and the hook k will
be lifted, and will actuate the weft fork lever or other stopping mechanism of
the loom. By which means the necessity for punching the cards to accomplish
the stopping of the loom when such cards become disarranged, as is the case with the
mode described in the Specification hereinbefore alluded to, is entirely dispensed
with.
The connecting or coupling of the cranks or wheels f.f, or their equivalents,
may be accomplished by a band, cord, link chain, or other means, in lieu of
the connecting rod or link shewn ; likewise, the guide rollers and their spindles may
either be dispensed with, or employed independently, as the cranks or wheels with
their actuating pins may be mounted upon studs, or otherwise, at any convenient
points, where they may be operated by means of the suspender rods or wires as
hereinbefore described, and other variations in detail may be made without departing
from the peculiar character of the invention.
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 :-
In connection with double lift jacquards, the combination of apparatus con-
sisting of a crank or wheel for each cylinder, which are coupled together
and each provided with a pin or projection, which, in operation, comes in contact
with the suspender rods or wires attached to the cards, and thereby actuating the
hook in connection with the weft fork lever or other stopping mechanism of the loom,
for the purpose of forming a fault-stopping apparatus of the nature and in manuer
substantially as herein shewn and described.
Dated this 13th day of April 1893.
WILLIAM GADD, C.E.,
64, Barton Arcade, Manchester, Agent.