Improvements in Looms.
Year: 1893

page_text: Date of Application, 23rd Oct., 1893-Accepted, 28th Apr., 1894
COMPLETE SPECIFICATION.
Improvements in Looms.
I, IGNAZ HEINRICH, of Koniginhof / Elbe in the Empire of Austro-Hungary,
Textile Engineer, 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 present invention relates to improvements in power looms and consists
mainly of an intermediate shuttle box in order that two shuttles may be simul-
taneously employed when weaving two pieces.
Mechanism in connection with the intermediate shuttle box for operating both
shuttles. Weft-stop mechanism in connection with the intermediate shuttle box.
A roughened take up roller in two parts and a cloth beam also formed in two parts.
An additional arrangement for actuating one part of the roughened take up roller
independently of the other.
In the accompanying drawings a loom of this description is represented in
Figure 1 by a section through the middle.
Fig. 2 represents a front view of the shuttle operating mechanism in connection
with the intermediate shuttle box, and
Fig. 3 a plan of part of the same.
Fig. 4 shows in side and front views the arrangement for operating part of the
roughened take up roller.
Fig. 5 represents three views of the weft-stop mechanism in connection with the
intermediate shuttle box.
Fig. 6 is a view showing the point of division of the roughened take up beam
and the cloth beam.
Fig. 7 is the same view with the parts coupled together.
Fig. 8 is a section taken through the point of connection of the roughened take
up beam and the cloth beam and
Fig. 9 shows two views of the treadles.
The cam shaft B which is driven by the main shaft A by means of the cog
wheels ab is provided near the middle of the loom with two specially constructed
cams F F which impart a reciprocating movement to the vertical shaft G by
pushing aside alternately the two conical anti-friction rollers HH' carried by axles
secured to the vertical shaft G.
The cams F F' are each formed with its operating surface at an angle to its
axis, and this angle is greatest at that part of the surface furthest from the centre
and the least at that part nearest to the centre, the intermediate parts being
graduated between these two extremes.
This is to compensate as far as possible for the angular movement of the axis of
the anti-friction rollers H H'.
The shaft G is provided with an arm or loop D to which one end of the spring E
is connected in order to hold the shaft G in the two extreme positions of its angular
movement. At the upper end of the shaft G is an arm a' which is connected to
the shuttle driver t of the intermediate shuttle box by a strap.
The intermediate shuttle box which serves alternately for the reception of both
sbuttles is arranged on the lay of the loom and its position is preferably adjustable,
the studs or brackets which carry the guide rod t of the shuttle driver t are
arranged at each end of the shuttle box and are adjustable in relation to each
other.
The shuttle driver t operates each shuttle, alternate picks driving one to the left,
and on its return. driving the other to the right and the position of the cams F Fi

page_text: is adjusted so as to propel the driver t in accordance with the movement of the
drivers in the end shuttle boxes.
g
At one end of the intermediate shuttle box is a grating 9 for the fork r of the
weft-stop mechanism R by means of which the loom is stopped if the stroke of
the shuttle happens to miss or the thread fails that in connection with the inter-
mediate shuttle box is of well-known construction being a duplicate of that of the
end shuttle box.
The treadles T are also of the usual well-known construction.
The roughened take-up roller is formed in two parts S S' and the cloth beam in
two parts W W₁ the two inner ends of the parts of both beams being formed
respectively into male and female clutches in order that they may be coupled
together after removing the wheel 7 when it is desired to weave one piece of
fabric. The take-up roller S S¹ and cloth beam W W' are carried by concentric
longitudinal shafts SW passing through them the ends of which shafts are carried
in bearings of the same usual construction.
One part of the roughened take-up beam may be mounted loosely on the shaft S¹
and be actuated by the ordinary arrangement and the other by a ratchet wheel and
pawl, the latter being actuated by the shaft of the lay. The movement of the
ratchet wheel is communicated by the gear 1, 2, 3, 4, 5, 6, 7, (1 to 6 of which are
carried on a framing L which is detachable) to that part of the roughened take-up
roller which is secured to the shaft S, the last wheel 7 of the gear being secured
to the shaft when the parts of the rollers are disconnected.
The principal advantage presented by this invention consists in the fact that
perfect selvedges are obtained when weaving two pieces such as is not the case in
the processes hitherto adopted where only one shuttle is employed. In the latter
process as is well-known the threads of the weft have to be cut through between
the two inner selvedges thereby rendering fraying and the consequent production
of unsatisfactory selvedges unavoidable.
A further advantage of this arrangement is that in case one of the two pieces
woven should show faults in the weaving which render the separation of the pieces
necessary, it is only the faulty piece which need be separated whereby a saving of
both time and material is effected.
Another essential advantage possessed by this arrangement is that the loom can
be worked with greater speed, inasmuch as the distance to be traversed by each
shuttle only amounts to half the breadth of the lay.
By means of the independent arrangement for actuating one part of the take-up
beam it becomes possible to weave two pieces of different quality or number of
weft-threads per inch. And as the mechanism controlling the throw of the shuttle
is adjustable, it is obvious that pieces of different breadth can be worked, or that
only once piece can be worked (that is in cases where the reed space is not of
sufficient breadth for two pieces). In the latter case, the process possesses at least
the advantage already mentioned of the greater speed which may be attained which
itself results from the shorter distance to be traversed by the shuttles.
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 a loom the arrangement of mechanism for throwing the shuttle adapted for
the weaving if necessary of two pieces with disconnected selvedges side by side and
characterized by two cams such as F and F¹ arranged on the cam shaft B in the
middle of the loom which operate the reciprocating shaft G by means of the
rollers H H¹ the spring E acting on the arm D of the shaft G holding the rollers H
or H' against the cam For F substantially as described and illustrated in the
accompanying drawings.
2. In a loom such as described the arrangement of two weft stop motions of which
one R is arranged at or near the middle of the loom and in connection with a
shuttle-box likewise located in the middle of the loom for the reception of the two
•

page_text: shuttles with the object of diminishing the path of the shuttle and hence increasing
the speed of the loom an arrangement of two sets of gearing of which one is
arranged on an easily detachable frame L in the middle of the loom rendering
possible the simultaneous weaving of pieces of different quality or number of weft
threads per inch substantially as described and illustrated in the accompanying
drawings.
3. In a loom such as described the arrangement of a roughened take-up roller or
beam consisting of two parts SS and of a cloth beam also in two parts W W the
two parts of the roughened take-up beam and cloth-beam respectively being capable
of being coupled with each other so as to form each two parts a continuous whole.
substantially as described and illustrated in the accompanying drawings.
Dated this 23rd day of October 1893.
W. P. THOMPSON & BOUlt,
Agents for the Applicant.