Improvements i
Year: 1894

page_text: Improvements i FOT
weavam.
I, ISAK HEER, of No. 28 Arterstrasse, Zurich, in the Republic of Switzerland,
do hereby declare the nature of this invention to be as follows:-
These improvements are designed with a view to considerably increasing the
output of the looms.
The characteristics of these improvements in the loom lie in (a) the shuttle
boxes, (6) the shuttles, (c) the parts for propelling the shuttles, (d) the part for
changing the shuttles and (f) the part for stopping the loom, which are shaped
and fitted in such a way that their mutual dependence and therefore the simplicity
of the invention will be readily perceived.
Corresponding to the six fold change of shuttles there are provided six shuttle
boxes grouped together on one part. The latter part is fitted with a small door
which is very convenient for putting in and taking out the shuttles. Each box is
made with take out appliances which allow the shuttle propelling parts that is
cam wheels to engage in the toothed shuttles. This shuttle box cannot be used
with any other looms that are made. The parts of the six shuttle boxes are
connected with a rod and this with the parts for changing the shuttles. The parts
for changing the shuttles consist of a rod, picker spindles and levers ou a revolving
shaft, further of a link or lever and a lever on a stud and finally of a disc, which
is fitted so that it can be turned on a spindle and on which disc there are either
four catches or two catches. When the disc is turned from left to right and
vice versa, the catches act on the mechanism which connects the said disc with the
shuttle box parts and the shuttle box in such a way that the shuttles that is the
toothed wheels can be put in or taken out, thus enabling an unlimited change of
shuttles to be made. As these parts can only effect the change of shuttles in
conjunction with the shuttle box parts their mutual dependence is self evident.
In order that the shuttle may be inserted and withdrawn from the wheels there
are open teeth; further the shuttle has teeth, on which the teeth of the wheels
catch, and the part which is described in detail subsequently. Owing to the
peculiar shape and construction of this shuttle it is not adapted for use with any
other looms. Nor can the shuttle propelling parts be used with any other looms.
These parts are on a beam and consist of a shaft and wheels and which are
connected with said shaft in such a way that one wheel engages with the toothed
shuttle whilst the other wheel engages with a rack. These parts are actuated by
this rack and are turned from right to left and vice versa in such a way that the
shuttles owing to the action of the wheel pass from left to right and rice versa from
one box into another. These parts do not serve however merely to drive the
shuttles but also to regulate their speed as may be desired. This result is produced
by the application of wheels which drive the shuttles being made larger than the
wheels which gear with the rack. The more the size of the shuttle wheel exceeds
that of the rack pinion the greater the speed of the shuttles. The parts for
stopping the loom are just as intimately connected with the shuttle as the shuttle
propelling parts. As already mentioned the shuttle has an appliance, consisting
of two parts (which are movable and are connected with each other) and of a
spring which works one of these two parts and of a pin which serves as a crank
for the other piece. With this appliance on the shuttle the part for stopping the
loom is inseparably connected. This part is fitted on the shuttle box and consists

page_text: of two shafts which are connected with each other and on which there are the
fliers which are actuated by the appliance on the shuttle just described. At the
moment when the shuttle enters the box the pick which is put into an eye of a
pin is drawn tight, in such a way that it at once acts on this pin and further on
the two pieces in consequence of which these are so turned that they cannot act
upon one of the fliers. But if the weft thread has been broken or has slipped out
then by the action of a spring these pieces are turned in such a way that they act
upon one of the fliers and so bring the loom to a standstill.
Dated this 5th day of July 1894.
"
the same is to be performed, to be particularly described and ascertained in and by
the following statement :-
My invention relates to improvements in weaving looms and consists of a
shuttle box fitted with a small door which is very convenient for putting in and
taking out the shuttles, and of a stop motion for stopping the loom when the
shoot or weft thread has been broken or consumed. The said improvements are
specially designed for application to ribbon looms but not restricted thereto.
Such being the nature and object of my said invention the following is a
complete description of same reference being had to the accompanying drawing in
which
Fig. 1 is a front elevation of two shuttle boxes.
Fig. 2 is a plan of Fig. 1.
Fig. 3 is a cross-section of a shuttle box on line - Fig. 1.
Fig. 4 is a plan of the shuttle.
Figs. 5 and 6 are detailed views of parts of same.
Shuttles as at present constructed are either fitted to manipulate their interior
appliances without removing the shuttle from the box or they have to be laterally
drawn out of the same for this purpose. According to my invention the shuttle
box is provided with a small door by means of which the shuttles may be easily
put in and taken out of the box at the front.
A, Figs. 4, 5 and 6, is the toothed shuttle, and B, Figs. 1, 2 and 3, are the
shuttle boxes with the cells b. The number of the cells arranged in one box may
vary conforming to the number of the shuttles to be guided. Each box is made
with a slit or aperture in the back wall b' opposite the wheels C to allow them to
engage or gear with the toothed shuttles and permit of the raising and falling of
the shuttles in looms with reciprocating or drop box motion applied to the shuttle
boxes. As the shuttles A must be taken out of the boxes B when the interior
appliances of the same are to be manipulated a lateral removal however not being
possible, I provide the face of the box with a small door D, Figs. 1 and 3, capable
of being pivoted on the rod E and formed of the bars d d'. By means of this
door the shuttles may easily be put in and taken out of the shuttle boxes. The
door D is kept closed by means of the spring catch d. The bars.d guide the,
shuttles when the door is closed..
The shuttle placed in the box is not visible during the act of weaving so that
the weaver cannot become aware of the rupture or consumption of the weft yaṛn.
It is therefore absolutely necessary that the shuttles be provided with a stop
motion which automatically stops the loom when the yarn is broken or consumed.
The stop motion is partly placed in the: interior of the shuttle and partly on

page_text: the shuttle box and forms another part of my invention. The portion placed in
the shuttle consists of two levers F F¹, Figs. 4, 5 and 6, connected with each
other by means of the crank pin and terminating in the projections or noses f,f.
These levers are turned inwardly by the tension of the yarns and when the latter
is broken or consumed turned outwardly by the spring G. In the first case the
noses are kept in the interior of the shuttle A, see Fig. 6, in the latter case
they project from the shuttle, see Figs. 4 and 5. The lever F is provided with
an eye-screw through which passes the weft threads, thus enabling an action
of the weft tension upon the levers F F' and the noses. The crank pin f
mounted on the lever F slides in the slot of the lever F1 when the levers F F¹
are actuated. ff are stop-pins for limiting the swinging of the lever F.
In order that the noses ¹f' may effect the stopping of the loom when the weft
threads has been broken or consumed a vertical shaft H, Figs. 1, 2 and 3, provided
with fliers h is placed on the face of every shuttle box B in such a manner that
the fliers / come within reach of the noses f¹³. On the lower end of the shaft. H
is fixed the lever I, Fig. 3, the crank pin of which engages in a slot of the arm e
fixed to the shaft E.
At the moment when a shuttle enters a box from the right hand to the left
hand the nose fl acts on a flier h, supposing that the weft thread is broken or
consumed, and at the moment when a shuttle enters a box from the left hand to
the right hand the nose facts on a flier h. In both events the shaft H is turned
and the shaft E axially shifted. By means of the grooved disc e¹ and the rod e³
the rod E acts on a lever e having a W shaped end. This end turned to the right
or to the left hand presses the upper arm of the book lever K forward, see Fig. 2,
so that the hook of this lever releases the stop lever L which stops the loom in
any known manner.
The oscillating shaft H forms an essential portion of my invention; the rod E
and the other organs connected therewith however are not essential and may be
replaced by other suitable appliances.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is.
1. In weaving looms a shuttle box provided with a door which serves for putting
the shuttle in and taking it out substantially as described and shewn.
2. In weaving looms provided with shuttle boxes such as described a stop
motion characterised by two projections or noses connected with each other
movably mounted in the shuttle and capable of being actuated by the tension of
the yarn or by a spring in the first case being kept within the shuttle in the second
case being turned outwardly in order to act on stopping appliances placed without
the shuttle.
3. In combination with the stop motion above characterised a vertical shaft
placed at the face of the shuttle box and provided with fliers upon which the
Doses may act when the yarn has been broken or consumed and they are turned
outwardly whereby the oscillation of the shaft is used to stop the loom by means
of other suitable intervening devices substantially as described and shewn."
Dated this Third day of April 1895.
WM. P. THOMPSON & Co.