Improved Apparatus for Operating Rising and Falling Shuttle Boxes in Looms for Weaving.
Year: 1896

page_text: Date of Application, 25th July, 1896
Complete Specification Left, 11th Sept., 1896-Accepted, 24th Oct., 1896
PROVISIONAL SPECIFICATION.
Improved Apparatus for Operating Rising and Falling Shuttle
Boxes in Looms for Weaving.
We, FERDINAND ROSSKOTHEN of Avenue Parade, Accrington in the County of
Lancaster Engineer and GEORGE KEIGHLEY of Bankhouse Iron Works Burnley
also in the County of Lancaster Loom Maker do hereby declare the nature of this
invention to be as follows:-
This invention relates to prior Letters Patent granted to one of the applicants
on the 14th day of March 1893 No. 5464, the present invention being an improve-
ment upon that described in the prior patent referred to.
In the specification referred to, the lever which carries the shuttle boxes is
mounted on two centres or fulcrums, both of which can be moved into two or more
different positions by a combination of eccentrics or crank pins, wheels, racks, and
hooks.
The advantage of using a lever with two fulcrums is greatest, when a large
number of shuttle boxes is required, because as is explained in the specification
referred to, the number of the different positions of the shuttle boxes is not equal
to the sum but equal to the product of the number of the different positions, into
which the two fulcrums of the lever can be placed. When there are not many
shuttle boxes required the apparatus for moving the shuttle boxes shewn in the
Specification No. 5464 of 1893, can be made simpler and more effective by arranging
one of the centres of the lever, which moves the said lever, to be stationary and
this different combination forms a part of our present invention.
According to this invention we make use of racks, on the top of which are hooks
to be received (when selected by the pegging mechanism) by arms attached to the
top of a vertical rod made to rise by means of a cam or tappet which arms in their
upward movement lift the selected rack the desired height for the purpose of placing
a given shuttle box into line with the shuttle race. The racks are in gear with a
pinion and on the same shaft of the pinion there are also two or more eccentrics of
different sizes or "lifts," thus if four shuttle boxes are employed, one eccentric will
operate two shuttle boxes, and the other eccentric will operate one shuttle box.
The racks are always in gear with the pinion and the upward movement of one
rack ensures the downward movement of the opposite rack.
The eccentrics control the movement of a weighted lever, which lever (by means
of a vertical rod) is connected to the shuttle boxes so that as the lever is moved
upon its fulcrum by the eccentric up or down, the shuttle boxes are raised and
lowered accordingly. The eccentric or compound eccentric as the case may be
work in a slot or yoke formed in the bottom lever. The horizontal lever may
however be operated by a combination of crank pins and eccentrics.
In order to "lock" the shuttle boxes or hold them securely in position whilst
the shuttle is being thrown across the loom, we employ a rocking lever moved
backwards and forwards by an eccentric or cam. This rocking lever carries a pin
or stud, and each time the shuttle boxes are raised and lowered the said pin is
placed either under or on the top of a projection on the rack, whereby the racks
are held in position and prevented from any vertical movement uutil the next
change is required when the piu will be removed from its holding position by the
cam, until it is time to return. By means of our invention, a compact, reliable and
steady box motion is constructed, positive in its motions, and by its means the

page_text: shuttle boxes can be skipped from one to three or one to six and six to one,
according to the arrangement of the jacquards employed. This motion is equally
applicable to six or more shuttles.
Dated this 24th day of July 1896.
TASKER & CROSSLEY,
Patent Agents.
Halifax, Agents for Applicants.
Improved Apparatus for Operating Rising and Falling Shuttle
Boxes in Looms for Weaving.
We, FERDINAND ROSSKOTHEN, of Avenue Parade, Accrington, in the County
of Lancaster, Engineer, and GEORGE KEIGHLEY, of Bankhouse Iron Works,
Burnley, also in the County of Lancaster, Loom Maker, 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 apparatus for operating the rising and lowering of
shuttle boxes for looms and is an improvement and a modification of the invention
described in the Specification No. 5464 of 1893.
In the specification referred to, the lever which carries the shuttle boxes is
mounted on two centres or fulcrums, both of which can be moved into two or more
different positions by a combination of eccentrics or crank pins, wheels, racks and
hook3.
The advantage of using a lever with two fulcrums is greatest, when a large
number of shuttle boxes is required because as explained in the specification
referred to, the number of the different positions of the shuttle boxes is not equal
to the sum but equal to the product of the number of the different positions into
which the two fulcrums of the lever can be placed. When there are not many
shuttle boxes required, the apparatus for moving the shuttle boxes shewn in the
Specification No. 54643 can be made simpler and more effective by arranging one
of the centres of the lever, which moves the said lever, to be stationary and this
different combination forms a part of our present invention.
Another part of our invention has reference to incans to be employed for locking
the shuttle boxes in any position whilst the shuttle is being thrown across the loom
and for that purpose we employ a rocking lever moved backwards and forwards
by an eccentric or cam. This rocking lever carries a pin or stud, and each time
the shuttle boxes arc raised and lowered the said pin is placed either under or on
the top of a projection on the rack, whereby the racks are held in position and
prevented from any vertical movement until the next change is required when the
pin will be removed from its holding position by the cam, until it is time to return.
In the accompanying drawings
Fig. 1 shews a side elevation (partly a vertical section) Fig. 2 a sectional plan
Figs. 3-6 details of our present invention.
Figs. 7-9 shew different modifications and Figs. 10 and 11 shew different
positions which may be obtained by 3 compound eccentrics.
Referring to Figs. 1 and 2, a is the lever which carries the shuttle boxes by
means of the rod b. This lever is mounted on the fulcrum g, the said lever having
a slot or yoke k formed in it, which latter surrounds eccentrics d and c, which may
be simple or compound and which can revolve upon the stud f. The lever a is
similar to the lever a shewn in Specification No. 54643, the only difference being,
that the fulcrum g in this case is stationary, whereas it was movable in the arrange-
ment shewn in the Specification No. 54640. The different positions of the lever a
are obtained by different positions of the compound eccentrics d and c mounted on

page_text: the shaft f. The means by which these eccentrics are moved and put into motion
are exactly the same as shewn in the Specification No. 54643 but as all the
eccentrics are arranged to revolve upon the same axis (which does not always
mean the same shaft) the whole arrangement now becomes considerably simpler
and the intermediate shaft and wheels used when the lever has two movable centres,
are avoided.
This new method makes the motion more reliable and reduces play and
backlash.
Another advantage of this new arrangement is, that the weight of the lever a
and shuttle boxes can be much easier balanced than when both fulcrums are
movable. As shewn in the drawings the lever a and shuttle boxes are balanced by
the weight G.
Apart from the omission of the intermediate shaft and wheels, the movement of
the eccentrics is performed in exactly the same manner as described in Specification
No. 5464" which will be understood from the drawings and specification referred
to without further explanation. It may distinctly be mentioned, that the same
advantage obtained by the arrangement shewn in the Specification No. 5464" is
also obtained in this arrangement riz.: that the same pattern card always moves
the same shuttle boxes into position.
The movement of the lever a is obtained by compound eccentrices d and c which
are placed within the lever. As will be seen from section Fig. 2 the eccentric dis
placed ou to the eccentric c and the eccentric d is surrounded by a slide which
mores within a slot or yoke k in the lever a.
Instead of using compound eccentrics, a combination of crank pins and eccentrics
may be used, as shewn in Figs. 5 and 6.
It is a disadvantage in many of the existing shuttle motions, that one card
causes different positions of the shuttle boxes, according to the position in which the
shuttle boxes were placed before.
The advantage of our shuttle motion, (that the same card will always cause the
same position of the shuttle boxes independently of their former position) can also
be obtained when the compound eccentrics or crank pins are not placed inside the
lever a but when they are connected to it by a connecting rod.
Figs. 7 and 8 show a shuttle motion, where the lever a is moved by a combination
of crank pins and eccentrics.
In this arrangement the crank pins and eccentrics are connected to the lever by
a connecting rod. As will be seen from the drawing, the crank pine carries
another crank pin d and on this latter is mounted the eccentric e which moves the
lever a by a connecting rod 3.
The crank pin is firmly connected with the shaft on which the wheel / is
keyed. The crank pin d carries a pin d' which enters into a slot in the boss of
the wheel d, which latter is loose on the shaft f. In the same manner, the
eccentric e is connected to the wheel e by the pin 2. The wheels 1, d² and e' are
moved by racks r, and hooks n and controlled by jacquard needles o and pattern
cards in the same manner as shewn in the Specification No. 54643.
Fig. 9 sliews a section of a modification where also the eccentric e is replaced by
a crank m.
When the dimensions are properly arranged it is possible to obtain by two
compound eccentrics, 4 different positions of the lever a which carries the shuttle
boxes and by 3 compound eccentrics or crank pins up to eight different positions of
the lever may be obtained.
Figs. 10 and 11 shews 6 positions of 3 compound eccentrics. In this case the
eccentric c moves the shuttle boxes the distance of one box, and either of the
eccentrics d and e move the boxes the distance of 2 boxes.
In order to prevent undesired movements of the shuttle boxes, a checking or
locking motion is applied, which is represented separately in Fig. 3. The toothed
wheel B on stud gears with and works in connection with a pair of racks r
and r'. The rising of one of these racks causes the opposite one to descend.

page_text: One of the racks is made with a projection p as shewn on the left hand side of
Fig. 3. In connection with this locking motion we employ lever H shewn
separately in Fig. 4 having its fulcrum in D. This said lever carries a bowl s and
also at its forked bottom end two (or three) pins or studs and s. The bowl s
carried by lever H is forced against can S by the flat spring F. When the rack r
is being raised, the pin s' is sliding on the projection p on the back of rack r, and
as soon as the motion of the rack has reached its proper extension, the pin s slips
under the said projection p and prevents any downward movement. Just before
another motion of the rack is required, the lever H is pushed from the rack by the
rotation of the cam S.
On a reverse notion of the racks and taking place the pin s¹ slides again on
the back of the rack and on the completion of the downward movement of the
said rack r, the pin s through the pressure of spring F moves on to the top of the
projection p, thus locking the racks and preventing any upward movement thereof.
Thus it will be seen that the racks are locked after each upward or downward
movement is finished.
The lever H is provided with a handle H', so that the pins s', s2, may he removed
from the racks, when the loom is stopped.
Therefore by releasing the racks, the shuttle boxes may be placed into any desired
position by hand, whilst the loom is standing.
A slightly different arrangement of this locking motion is shown in Fig. 7. In
this arrangement the lever H has its fulcrum at its hottom end, and instead of
having a projection p on the back of the rack, the said rack has two recesses
into which the pins & and s2 slide after the completion of each lift.
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
Firstly. In apparatus for rising and lowering shuttle boxes, mounting compound
eccentrics or cranks or a combination of cranks and eccentrics within a yoke in
lever a which swings on one fulcrum g and carrying the shuttle boxes, as shewn in
Figs. 1, 2, 5 and 6.
Secondly. In apparatus for rising and lowering shuttle boxes, the combination
of compound crank pins such as c, d, and eccentrics such as e in combination with
wheels such as B, racks r and r, hooks and jacquard needles o, as shewn in
Figs. 7 and 8.
Thirdly. In apparatus for rising and lowering shuttle boxes, the combination
of compound crank pins such as c, d, and eccentrics e, in combination with wheels B
racks randr hooks n and jacquard needles o, as shown in Fig. 7.
Fourthly. In apparatus for rising and lowering shuttle boxes, the use therein of
a locking motion consisting of a lever H carrying studs and 2 for acting under
and over projection p or acting within recesses and of racks », said lever H
being controlled by a cam S, as shewn and described herein.
Dated this 10th day of September 1896.
TASKER & CROSSLEY,
Halifax, Patent Agents.