An Improved Loom for Weaving Fine Linen Yarns.
Year: 1897

page_text: Date of Application, 2nd June, 1897-Accepted, 31st July, 1897
COMPLETE SPECIFICATION.
An Improved Loom for Weaving Fine Linen Yarns.
I, FREDERICK WILLIAM GOLBY, of 36 Chancery Lane, in the County of Middlesex,
Patent Agent, do hereby declare the nature of this invention and in what manner
the same is to be performed, as communicated to me by August Zimmer,
Expert in Weaving, of 22 Nieder Altlauban, Lauban, Silesia, Germany, to be
particularly described and ascertained in and by the following statement:―
This invention relates to a mechanical loom for weaving fine linen yarns with a warp
of over 30 and a weft of over 35 threads to the centimeter and is distinguishable from
already known looms of this kind by the peculiar, automatic driving of lathe or batten,
shuttle and harness by means of a single driving shaft as well as by the constant
motion of the shafts, whereby the formation of the chain or loop is effected in a
careful manner and without any great strain on the warp threads.
Moreover the forward motion of the lathe or batten occurs during the change of the
shed at the moment the weft thread just previously thrown is seized by the
alternate threads of the warp. The power for the forward movement of the batten is
therefore considerably less than in known looms of this kind, in which the forward
movement of the batten occurs after the completion of the change of the shed.
Furthermore, hitherto, the time occupied in the forward movement of the batten has
been equal to that taken by the backward movement. In the loom which forms the
subject of this invention however the former movement is slow, and the latter as
rapid as possible.
The highly important technical advance obtained by this invention lies in the fact,
that by the aid of a loom so fitted up the greatest speed can be obtained without
danger to the warp or chain, a result which with the pedalling mechanism hitherto
in use is unattainable.
In the accompanying drawings, Fig. 1 is a longitudinal section of the loom which
forms the subject of this invention; Fig. 2 is a front view of same; and Fig. 3 is a
plan with the several parts in their relative positions immediately after the throw of
the shuttle. Figs. 4 and 5 are longitudinal sections, similar to Fig. 1, the former
showing the position of the several parts in relation to each other at the time of the
beating of the battens, the latter at the beginning of the batten movement.
The single driving shaft a, effecting the forward movement of the batten, and the
change of the shed, that is to say the motion of the treadles and which also effects
the motion of the shuttle, is mounted in the frame or body A of the loom. This
shaft a is furnished with projections b b¹, these being at an angle of 180 degrees to
one another, and connected by means of connecting rods c c¹, with the pedals d d¹, to
which the shafts C C are fastened by cords e e'. The shaft a is also furnished with a
double oscillating rod ff forming a complete staff, and fastened, at right angles to the
projections b b near the ends of the driving shaft, the two parts of the rod or staff ƒ ƒ¹
being equal to each other. This double oscillating rod is furnished at its free ends with
rollers gg, which press against the back of the batten during the circular motion
and thereby pushes it forward, whilst its rapid return movement is effected by the
springs h which engage with with the extension, passing downwards or underneath
over the pivot . Again on the shaft at both sides of the projections b b¹ are

page_text: attached oscillating rods q q', which are arranged obliquely to the axis of the
driving shaft in such a manner that with their free ends they are able to
depress the hoizontal arms having slanting or sloping ends, belonging to
a T-shaped lever k¹³ oscillating around 3³. Thereby the arm is caused
to oscillate froin left to right, and as the free lower end of this arm k is connected by
cords with the rods, these latter also move alternately inwards and thereby
the throw of the shuttle is effected.
The pivot of the T-shape lever is on the prop or stay j, which again is fastened
below to the cross piece n. The cross piece projects beyond the side walls A of
the frame or body and on both ends forms a bolt n¹, on which is a nut m the other
end of which receives the pivot m¹ of the rod, so that an oscillation of the same
with the lathe in the shuttle box H of which its upper end is guided, can be
effected as well as a second oscillation at right angles to the first mentioned, in order
or
The backward
to operate the shuttle.
motion of the rods [1
after the throw of the shuttle is effected by springs o, which engage with, the
lower shorter arms and are connected together by means of a cord p².
return
The operation of the loom is explained with reference to Figs. 1, 4 and 5 and is as
follows:-
The shuttle passes through the shed whilst this is at the most open point. Fig. 1
illustrates this; the projections bare vertical, the pedals & d¹ have thus reached
their end positions on the two sides, whilst the oscillating rod q with the aid of the
T-shaped lever kk' the arm of which it influences, throws the shuttle through.
Already, while the shuttle is passing through, the change of shed begins, in
consequence of the constant motion of the pedals, acting on the projections b b¹.
These projections having reached the horizontal position all the warp threads lie
in one plane and the oscillating rods ff in consequence of their arrangement are at
right angles to the projections bb' and f has nearly reached the back of the lathe L.
As soon as the crossing of the warp threads begins, the beating of the batten occurs
during the further formation of the chain or row. Immediately after the beating
of the batten the end g of the oscillating rod f leaves the back of the batten L
(Fig. 4); this latter loses its support above and is quickly brought back to the
position of repose, by means of the springs h, this position being reached shortly
before the complete opening of the row, so that the new thrown thread or the shuttle
may pass through when the greatest width is available, whereupon the operation is
repeated.
The tension of the warp needs only to be slight during the weaving, it being
possible under the present arrangement to place the support S for the warp very
high. Hence again less strain of the warp and great security against breakage of
the warp threads.
Having now particularly described and
invention, and in what manner the same is
claim is ;-
ascertained the nature of my said
to be performed, I declare that what I
An improved loom for weaving fine linen yarns with a warp of over 30 and a weft
of over 35 threads to the centimeter, the distinguishing feature of which is the
arrangement of a single driving shaft a for the working of lathe or batten,
shuttle and harness, in such a manner that the treadles d d' connected with the
shafts C C' by cords are raised and lowered, with the aid of connecting rods c c¹ by
means of projections 661 at an angle of 180 degrees to each other, the striking
movement of the lathe or batten L which oscillates around i¹ being effected by the
double rod or staff ff provided at its free ends with rollers g g¹ and being fixed
firmly on the driving shaft a at right angles to the projections b b', the back or
return notion of the same being effected by springs engaging with projections i³,
and the rotary rods being connected with one another by means of springs and
on the other hand above the pivot m¹ with the T-shape lever k¹ k², by
tension elements p p¹, these rotary rods serving to operate the shuttle by the aid of
nuts mon bolts n¹ of the cross piece n and being so actuated that the upper sloping

page_text: or slanting arms on their free ends lie in the path of the fixed oscillating rods q q¹
near to the projections b¹ and on the driving shaft a and thus are affected by them
when the driving shaft is rotated substantially as described with reference to the
accompanying drawings.
th: 1
1000