Improvements in Apparatus for Relieving the Strain on the Warp Threads in Cross-weaving Looms.
Year: 1897

page_text: Date of Application, 27th May, 1897-Accepted, 8th Jan:, 1898
Improvements in Apparatus for Relieving the Strain on the Warp
Threads in Cross-weaving Looms.
I, FREDERICK WILLIAM GOLBY, of 36 Chancery Lane, in the County of Middle-
sex, 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 the Firm of
Singeisen and Horn, Fahrnau, Baden, Germany, Manufacturers, to be particu-
larly described and ascertained in and by the following statement:-
This invention relates to improvements in connection with the arrangement of
harness cords in cross weaving looms and is intended to relieve the strain on the
warp thread during the formation of the shed. By reference to the accompany-
ing drawings it will be seen that according to this invention the return of the
warp threads is effected by means of weights which are so connected to the har-
ness cords as to be balanced during the formation of the shed only coming into
operation when the harness cords are released.
In Fig. 1 the upper cord of the eye is fastened underneath the harness
board to the harness thread r destined for the left-hand movement. The warp
thread d passes through the upper part or small eye of the large eye or loop h.
The lower cord u is provided with a weight c and is suspended from the bottom of
the eye or loop h.
In the event, therefore, of the left-hand harness thread r being lifted, the eye h
and with it the warp thread d are raised in such a manner that a left-hand leash
is formed, as is shown in Fig. 3. In passing from the position Fig. 1 to the posi-
tion Fig. 3 the warp thread & raises the connecting part u¹ of the eye h', the lower
part al of this latter being traversed by the ground warp and the part u' kept
straight by the weight e. In order to balance this weight during the formation
of the left-hand leash, a cord n is employed, which cord is twisted or connected
underneath the harness board g to the left-hand harness thread r.
In the same manner a raising cord m is connected with the right hand harness
thread s.
The weight which is suspended to this cord m is provided for the
keeping straight of the lower part 2 of the eye h¹.
In the event, therefore, of the right hand harness threads being lifted, all the
various parts leave the position shown in Fig. 1 and take that shown in Fig. 2,
and thus it is is possible to lift the warp thread d, without its being disturbed,
caught or stopped by the connecting part u².
The harness thread t for the linen leash is coupled to the upper part of the
eye h¹ by means of the upper cord 12. When this harness thread is lifted, the
ground warp k is drawn upwards as shown in Fig. 4. The lower connecting
cords uu, and the weights e f being also drawn upwards, the connecting
cords m n will cease to be stretched.
In the form shown in Figures 1 to 4, the cords m n take an inclined position,
and confusion results: In order to obviate this, the cords m n may be replaced
as shown in Figs. 5 to 8 by the following arrangement:-
The lower part ¹ (see Fig. 5) is rigidly connected at the top with an exten-
sion n', which is coupled with the harness thread r for the left hand movement,

page_text: by means of a cord, the so-called supplementary harness thread r¹, which passes
through the board q. In the same manner the lower part 2 is rigidly connected
with an extension m' and by the supplementary harness thread s¹ is coupled to
the harness threads for the right hand movement.
In this particular form also the upper cords 7 and 7 of the eye h intended for
the warp thread d are rigidly connected with the lower cords u³ u which latter
are provided with weights el f¹.
Figs. 6, 7 and 8 represent the positions of the parts for the right and left-hand
movements and a ground leash respectively.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. An arrangement for relieving the strain on the warp threads in cross-weaving
looms, the main features of which consist in the addition of lifting cords (n and m
respectively) between the harness thread r or s (the former for left hand and
the latter for the right hand movement) and the weights c or f of the eye h¹ of
the ground thread for the purpose of relieving the strain on the part or us
when the cord r or s is lifted, substantially as described with reference to Figs. 1
to 4 of the accompanying drawings.
2. A modification of the arrangement for relieving the strain on the warp
threads in cross-weaving looms indicated in the first claim hereof the principal
features being that in order to avoid confusion the lifting cord n or m is replaced.
by an additional part n¹ or m¹ rigidly connected to and extending upwards from
the lower parts u¹ and u³ substantially as described with reference to Figs. 5
to S of the accompanying drawings.