Improvements in Weaving Looms.
Year: 1897

page_text: Date of Application, 22nd Sept., 1897-Accepted, 19th Feb., 1898
COMPLETE SPECIFICATION,
Improvements in Weaving Looms..
I, ANDRÉS PUJOL, of Manresa, Barcelona, Spain, 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:-
My invention relates to improvements in weaving looms and more particularly
to the batten the picking-stick and to the picker-keeper.
Figure 1 of the accompanying drawings is a partial view in elevation of the
batten provided with my new arrangement enabling the upper bar to turn.
Figure 2 is a sectional elevation on line of Figure 1 seen in the direction
of the arrow.
Figure. 3 is a sectional elevation on line
of the arrow.
of Figure 1, in the direction
Figure 1 is a view similar to that of Figure 1' with a somewhat modified cou-
struction.
Figure 2 is a sectional elevation on the line vv of Figure 1* in the direction
of the arrow.
Figure 3 is a section on the line zz of Figure 1 in the direction of the arrow
Figure 4 is a side view of the picking-stick.
Figure 5..is a plan thereof..
.
Figure 6 is a longitudinal section of the flexible picker guard.
Figure is a plan thereof.
Figures 8, 9, 10 and 11 are details of the cap C, socket D and the bearing E¹.
Under my invention no change is made in either the lower bar J of the cross
frame or the standards L L' which support it, or in the reed I. On the other hand
the upper bar A of the cross frame is able to turn round the shaft B'which traverses
its full length. It is evident that instead of the shaft two pivots may be used
at the ends of the bar A.;
.
The bar A is. of, wood and has a groove in its lower half in which the reed I
is held and at each of its ends it is provided with a cap (C and-C¹) thus allowing
of its being fixed to the shaft B.by. binding screws. The ends of the shaft B rest
in bearings E E', fastened to the standards L and L'.
The cap C has a socket D traversed by the shaft B. The front part of this socket
is flattened out to take a plate D provided with a nose D" This plate is fixed
to the said socket by a bolt d. The cap C is fixed upon the left hand end of
bar A in such a way that they can rotate together or separately. The bearing E
in which rests the left hand end of the shaft B is fixed to the standard L-by
means of a bolt e passing through an aperture in the standard. Opposite the
nose D is a stop O carried by a bracket P fastened to the fixed portion of the
loom P¹.
..
Now, when the reed I in executing the movements necessary for tightening
the weft threads meets with an obstruction this obstruction causes the bar A to
turn thus depressing the nose D so that its end passes under the stop. O which

page_text: completes the turning motion of the bar A and thereby prevents the breakage of
the warp threads.
The upper,part of the standard L also carries the bearing F of the picker rod G.
The cap Cat the right hand end of the batten has a socket C through which
passes the shaft B which is secured therein by means of a screw. The bearing E¹
on which the shaft B rests has a projection E" against which abuts the short
arm M of the bent lever M which has a socket M working on the shaft B so
arranged that they can either revolve together or not.
The end of the arm M" is attached to a spiral spring N. so that the arm M¹
is kept pressed against the projection E".
By means of this arrangement should the reed encounter any obstacle the
bar A turns and with it the shaft B which causes the bent lever M¹ " to turn also
thus extending the spring N. As soon as the resistance ceases the spring N reacts and
brings the lever and bar of the comb back to their normal position.
On the standard L' and below the bearing E is the support F¹ which carries
the picker rod G G of the picker.
It is thus seen that the nose I)" with the stop O and the bent lever M¹ Mú in
conjunction with the spring N form a complete mechanism whereby the bar A
can be actuated. The chief function of the catch or nose piece D¹ is to complete
the turning motion before the reed tightens the threads of the weft, while the bent
lever herein before mentioned brings back the upper bar A to its normal position.
Figures 1, 2, and 3^ represent a modified form of my invention, a modified
form however which would not in any way alter the working of the loom.
This modified form differs in the first place in having the upper bar of the
batten incapable of rotation about a central axis as it is fixed at the ends to the
standards. The bar has however a movable part which can oscillate vertically.
in order to allow the reed to escape when the latter meets with an obstacle.
This modified form differs in the second place in forming the nose D₁ at the
end of a bent lever which held in place by a spring and is provided with a
central arm M which bears against the movable part of the bar of the batten in
order that the latter may only be able to turn when the resistance of the obstruc-
tion encountered is greater than the pull of the spring.
In this modified form the upper bar of the batten which is fixed to the standards
is cut vertically into two halves for almost its entire length. The two halves A
and B are united by hinges attached to the upper portions of the halves A and B.
The half B which is the shortest can oscillate round the hinge C.
The head of each standard L L' is surmounted by a bracket E traversed by
a pivot F on which the bent lever D D¹ works. The nose D" which is opposite to
the stop is supported by a bracket P fixed to the frame-work P¹ of the loom. The
end D of the bent lever is attached to the spring N. The other end of the
spring N is fastened to the standards L and L'. The central arm M of the lever
projects vertically downwards its function being to keep the movable part B
always pressed against the fixed part A in order to grasp the reed I.
By means of this arrangement it is seen that if the reed I meets with any
obstruction whatever during the tightening of the weft threads this obstruction
causes the movable part B to oscillate and then the nose D" passes under the
stop thus completing the oscillatory motion, the central arm is actuated by B
and allows the reed to escape out of the groove without breaking the warp threads.
The spring N then brings the movable part B back to its working position.
Figures 4 and 5 represent the picking-stick provided with the improvements
which tend to prevent friction between the neck and the picking-strap thus
preventing the said picking-stick from becoming heated. In order to effect this
purpose the neck Q₁ of the picking-stick Q has a leather band S fastened by screws
at the two ends of the neck. Above this band is a spring R which constantly
presses the band against the neck. Thus all friction is avoided between the two
parts.
The flexible picker guard represented in Figures 6 and 7 is composed of a band

page_text: of leather T in which is cut an elongated hole through which passes one of the
arms of an L-shaped piece the other arm of which is fixed to the under bar of
the batten. The band T is fastened to the L-piece by a spiral spring T¹. At the
end of this band is a stop V made of leather or other suitable material on which
the picker strikes when it is actuated by the action of the shuttle. The stop V
has a hole through which the guiding shaft of the picker passes.
With this arrangement the action of the shuttle is transmitted to the picker
at the stop V and by the band T to the spiral spring T¹ which deadens the shock.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is;
―:
1. The arrangement by which the upper bar of the reed is made movable
round a central axis supported by standards, one of the caps of the said bar
having a nose which abuts against a stop supported by the fixed part of the
loom, whilst the other cap of the said bar has a bent lever supported by the shaft
of the said bar substantially as set forth.
2. The modification of the arrangement claimed in Claim 1 in which the upper
bar of the batten is cut vertically lengthwise into two halves united by a hinge
or hinges the one half being fastened to the standards while the movable part can
oscillate vertically; combined with a bent lever which oscillates on a pivot
supported on the top of the standard the said lever being provided with a central
arm which presses against the movable part of the upper bar and tends to keep
it always pressed against the fixed part by the action of a spring substantially
as set forth.
3. The application at the neck of the picking stick of a leather band and of a
spring which compresses the picking strap against the neck of the picking-stick
preventing undue movement of the string and consequently the heating and wear
and tear of the picking stick substantially as set forth.
4. The flexible picker guard formed of a leather band provided with a stop on
which the picker strikes and with a spring for the purpose of deadening the shocks
produced by the throw of the shuttle substantially as set forth.
1
1
1907