Year: 1888

page_text: We HERMANN MÜLLERS and ARTHUR SPINDLER of Dülken in the Kingdom o
Prussia, Empire of Germany, Engineers 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 and accompanying drawings :-
Our said Invention relates to jacquard apparatus for use in looms for weaving. In
certain weaving operations all of the healds are sometimes raised and lowered at each
stroke of the lifting knives unnecessarily, thus taxing the warp yarns and absorbing
power. According to our invention we previde fixed knives and form secondary
hooks upon the lifting hooks. When it is desired that a lifting hook which has been
raised should not be lowered at the next downward stroke of the knives the said
secondary hook on the lifting hook is allowed to engage, with the corresponding fixed
supporting knife whereby the lifting hook is upheld until a change of the cards or
card barrel displaces the said secondary hook from the fixed knife and allows the
lifting hook to be lowered.
For the purpose of rendering our Invention more clear we have attached hereto a
sheet of explanatory drawings to which we will now refer.
Fig. 1 is a sectional view of a jacquard showing all the lifting hooks at the
bottom.
Fig. 2 is a similar view with the side frame of the jacquard removed and certain of
the lifting hooks namely 1. 4. 5. 6 and 8 shown raised about one third of their
upward lift.
Fig. 3 shows the said lifting hooks raised to their full extent.
Fig. 4 shows the lifting hooks 6 and 8 being lowered while the hooks 1.4 and 5
are sustained by the corresponding fixed knives y.
We have shown only those parts of the jacquard which are essential to the

page_text: illustration of our invention. The various parts are supported from the side frames
and in the said frames there slides in suitable bearings, the part which carries the
rising and falling knives h. The lifting hooks which at times engage with these
knives are numbered 1 to 8. They are supported in the usual or in a suitable
manner and pass through eyes in the needles which are operated by the card barrel c,
or it might be by a chain of cards in the usual manner. Upon the lifting hooks 1 to 8
we form secondary hooks s and it is by means of these secondary hooks s that the
lifting hooks are held suspended when it is not desired that they shall be lowered
with the descending knives h in the frame k. The means for suspending them are as
follows:-
-We attach fixed cross bars r to the frames f of the jacquard and carry fixed
knives from the said fixed bars the said knives y remaining constantly in
the same position and so arranged that unless the lifting hooks are diverted as
they descend, the secondary hooks s will engage with the fixed knives y. Referring
to Fig. it will be seen that the frame k and knives h are at the bottom
of their stroke and that the card barrel c has pushed aside the lifting hooks 2, 3
and 7 the said three lifting books remaining, while the others are lifted. In
Fig. 2 the knives have been raised one third of their stroke, having lifted
the hooks 1. 4. 5. 6. 8. The card barrel c has meanwhile been moved to the
left, and is being rotated one fourth of a revolution so as to present a new
face to the needles x. In Fig. 3 the upward stroke has been completed and
the card barrel c has returned, pressing aside those lifting hooks 6 and 8 which it is
intended should return with the knives h on their downward stroke. By being thus
pressed aside the secondary hooks s on the said lifting hooks avoid the fixed knives y
and are lowered by the knives h. On the other hand the lifting hooks 1. 4 and 5 not
being thus diverted by the needles are hitched upon the fixed knives y, and remain
there suspended while the knives / descend. At the next or it might be at any other
succeeding stroke of the knives and frame k, these suspended lifting hooks may be
pushed aside by a new face of the card cylinder c or cards and thus allowed to
be lowered with the knives h. From the foregoing description it will be evident that
the lifting hooks may be operated in any desired manner and in accordance with the
arranged pattern of card barrel or cards.
с
In order to prevent the suspended lifting hooks from being dislodged from the
fixed knives when the card barrel c makes its next stroke and while the knives h are
descending or have descended, we arrange that no change in the card barrel will take
place until the knives are raised and ready to receive the dislodged lifting hooks.
It will be observed that the card barrel c is carried in a rocking frame indicated by d
and that a rising and falling bowl 9 runs in a cam groove 6 and rocks the frame
to and fro on its pivot as shown. The barrel c is rotated one fourth of a revolution
on its backward stroke by a catch lever w pivotted to the frame of the jacquard at a,
and acting on four stops, z on the card barrel. In connection with this lever
we arrange a second lever one end of which engages by means of a pin m with a
slot in the catch lever w. The other end of the lever comes opposite a projection or
nose n formed on one of the rods which support, and rise and fall with the frame k.
On the upward stroke this nose n does not affect the catch lever wo but on the
downward stroke the nose strikes upon the lever l as shown at Fig. 4, and throws the
catch lever w up into the position shown in which position it is held clear of the
barrel c and does not move it on its axis. When clear of the nose n the lever w
again drops, or is carried round by a coiled spring into gear with the stops = on the
card barrel.
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:
(1) In a jacquard machine of the indicated or of a substantially similar construction,
the means for at times preventing the unnecessary raising and lowering of certain of
the healds, the said means consisting of the fixed knives or supports y for sustaining
or suspending certain of the healds at the top of their lift until such time as it

page_text: is necessary that they should be lowered again arranged and acting substantially as
described and shown.
(2) In a jacquard machine of the indicated description and as set forth in claim 1
the means for obviating a change of the pattern card barrel, the said means consisting
of the nose n rising and falling with the shedding mechanism in combination with the
levers and w whereby the latter is at times prevented from engaging with the stops
on the card cylinder so that at times no rotation of the card barrel takes place
all arranged and operating substantially as hereinbefore described and shown.
Dated this 30th day of November 1888.
DUTTON & FULTON,
1, St. James Square, Manchester,
Agents.