Improvements in or connected with the Beat-up, Shedding, and Picking Motions of Looms for Weaving.
Year: 1896

page_text: Date of Application, 19th Oct., 1990
Complete Specification Left, 21st June, 1897-Accepted, 25th Sept., 1897
vate
pprication,
Complete Specification Left, 21st June, 1897-Accepted, 25th Sept., 1897
Improvements in or connected with the Beat-up, Shedding, and
Picking Motions of Looms for Weaving.
I, GABRIELLE DUTILLEUL, of 16, Boulevard de la Liberte, Lille, in the Republic
of France, Spinster, do hereby declare the nature of this invention to be as
follows:-
This invention relates to improvements in looms for weaving.
The chief difficulty in weaving broad fabrics is connected with the operation
of the shuttle.
Whatever be the initial force with which it is thrown the shuttle does not
follow the backward movement of the batten which serves to support it during
its movement and drops or falls below this batten; moreover the opening of the
threads is not maintained for a sufficient length of time to enable the shuttle
to complete its movement without being embarrassed by their closure.
To overcome these two disadvantages I provide for diminishing the velocity of the
backward movement of the batten and of the movement of the harness during
the movement of the shuttle. Furthermore I employ in combination with the
means of carrying out the above a special device enabling the movement of the
shuttle to be obtained by a sharp and prolonged blow but without the initial
swing or throw of the picker.
In carrying out my invention I advantageously proceed as follows:-The
crank shaft, which actuates the batten through the medium of a connecting rod,
receives its movement from pulleys, pinions, and two heart shaped wheels. The
heart shaped wheels cause the shaft to rotate with a variable velocity so as to
diminish the velocity of the backward or recoil movement of the batten during
the movement of the shuttle. The velocity of the recoil movement of the batten
being thus diminished the shuttle accompanies the upper part of the batten,
which serves as its race, and moves laterally with it instead of preserving its
straight course and allowing the batten in its backward movement to pass from
under it.
The crank shaft being connected by the ordinary gearing of the loom to the
shaft for operating the harness the said shaft participates in the variable move-
ment of the crank shaft which is provided with eccentrics and varies the velocity
of the movement of the harness.
In combination with the above described devices I provide an arrangement for
actuating the shuttle by a sharp blow, but without the initial swing or throw
of the picker wherein each picker is actuated not by the second shaft but by
the crank shaft through the medium of two links or levers connected to one
another by a connecting link the points of attachment of which to the two levers
respectively can be adjusted to vary the distance of the levers from one another.
By this arrangement and by suitably regulating the length of the levers the
shuttle can be actuated by a sharp prolonged blow but without the initial swing
or throw of the picker the blow of the picker necessary for actuating

page_text: the shuttle being effected by the contact of a roller, carried by a
a crank
keyed at each end of the crank shaft, with a projection rounded at the sides,
instead of being formed, as ordinarily, of lateral parts straight or curved, on the
upper link or lever.
The crank shaft makes one revolution for each throw; but as it must not
actuate the two pickers at each revolution but that on each side alternately with
successive revolutions I provide each of the picker actuating devices with the
following device whereby the two contact rollers are alternately displaced so
that they cannot come into contact with the projection on the lever.
The position of the roller can be displaced on the spindle which carries it
by a fork or the like which can also be displaced laterally on the spindle or guide
on which it is mounted and which is, similarly to the other spindle, fixed to the
crank.
A cylindrical sleeve fixed to the frame of the loom is provided with a double
groove in which moves a spur or projection carried by the fork or the like which
engages the roller. A recess formed in the circular projection separating the
two grooves and two bosses suitably arranged opposite this recess cause the roller
to be displaced laterally at each revolution so that the said roller, during one
revolution of the crank shaft, is brought opposite the projection on the lever
and during the following revolution is shifted so that it passes by the side of
the said projection.
In this latter position the roller passes opposite the projection without touching
it and the picker to which it corresponds is not actuated.
It will be obvious that my invention, that is to say, reducing the velocity of
the backward movement of the batten and of the movement of the harness could
be effected by suitable levers or cams rotating with a regular movement.
Dated the 19th day of October 1896.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.
Improvements in or connected with the Beat-up, Shedding, and
Picking Motions of Looms for Weaving.
I, GABRIELLE DUTILLEUI, of 16, Boulevard de la Liberte, Lille, in the Republic
of France, Spinster, 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:-
This invention relates to improvements in looms for weaving.
The chief difficulty in weaving broad fabrics is connected with the operation of
the shuttle. Whatever be the initial force with which it is thrown the shuttle
does not follow the backward movement of the batten which serves to support it
during its movement and drops or falls below this batten; furthermore the shed
is not maintained for a sufficient length of time to enable the shuttle to complete
its movement without hindrance from the closing of the threads.
To overcome these two disadvantages I provide for reducing the velocity of
the backward movement of the batten and of the movement of the harness
during the movement of the shuttle. Furthermore I employ in combination with
the means of carrying out the above a special device enabling the movement of
the shuttle to be obtained by a sharp and prolonged blow but without the initial
swing or throw of the picker.
In the accompanying drawings.

page_text: Figure 1 is a sectional side elevation of a portion of a loom having my improve-
ments applied thereto;
Figure 2 is a front elevation of the same; and,
Figure 3 shews views of a detail.
The crank-shaft A, which actuates the batten through the medium of a con-
necting rod R, receives its movement from the pulleys L, the pinions K, J and
the two heart shaped wheels I, II. The heart shaped wheels H, I cause the
shaft A to rotate with a variable velocity so as to reduce the velocity of the
backward or recoil movement of the batten during the movement of the shuttle.
The velocity of the recoil movement of the batten being thus reduced, the shuttle
accompanies the upper part of the batten, which serves as its race, and moves
laterally with it instead of preserving its straight course and allowing the batten
in its backward movement to pass from under it. The shuttle is thrown, as in
ordinary looms, when the batten is at the back position that is when it is moving
with its minimum velocity.
The crank-shaft A being connected by the ordinary gearing of the loom to
the shaft B for operating the harness, the said shaft participates in the variable
movement of the crank-shaft A which is provided with eccentrics and varies
the velocity of the movement of the harness.
In combination with the above described devices I provide an arrangement for
actuating the shuttle by a sharp blow, but without the initial swing or throw of
the picker wherein each picker is actuated not by the shaft B but by the shaft A
through the medium of two links or levers F and G connected to one another by
a connecting link Z, the points of attachment x and y of which to the two levers
respectively can be adjusted to vary the distance of the said levers from one
another.
By this arrangement and by suitably regulating the length of the levers F
and G, the shuttle can be actuated by a sharp prolonged blow but without the
initial swing or throw of the picker, the blow of the picker necessary for actuating
the shuttle being effected by the contact of a roller E, carried by a crank D keyed
at each end of the shaft A, with a projection C rounded at the sides, instead of
being as is usually the case straight or hollow, on the upper link or lever F.
The shaft A makes one revolution for each throw; but as it must not actuate
the two pickers at each revolution but that on each side alternately with successive
revolutions I provide each of the picker actuating devices with the following
device whereby the two contact rollers E, E are alternately displaced so that
they cannot come into contact with the projection C on the lever.
The position of each roller E can be displaced on the spindle N which carries
it by a fork k or the like which can also be displaced laterally on the spindle or
guide L' on which it is mounted and which is, similarly to the spindle N fixed
to the crank D.
A cylindrical sleeve M (Figure 3) fixed to the frame of the loom is provided
with a double groove a, b in which moves a spur e carried by the pin or pro-
jection d of the fork k which engages with the roller E. A recess or break in
the circular projection f separating the two grooves a and b and two bosses g, h
suitably arranged opposite this recess or break cause the roller to be displaced
laterally at each revolution so that the said roller, during one revolution of the
shaft A, is brought opposite the projection C on the lever F and during the
following revolution is shifted so that it passes by the side of the said projection.
In this latter position the roller E passes opposite the projection without
touching it and the picker to which it corresponds is not actuated.
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. In looms for weaving gradually reducing the velocity of the backward move-

page_text: ment of the batten during the movement of the shuttle, substantially as, and for
the purpose herein before described.
2. In looms for weaving gradually reducing the velocity with which the harness
moves during the movement of the shuttle, substantially as and for the purpose
herein before described.
3. In looms for weaving varying the velocity of movement of the batten and
of the harness so as to effect the regular operation of the shuttle as described.
4. In looms for weaving the employment of a device for throwing the shuttle
without any initial swing of the picker, such device consisting of two links or
levers F and G connected together by a rod Z which enables the distance apart
of the axes of the two links or levers to be varied, substantially as hereinbefore
described and illustrated.
5. The combination with a device of the kind described in the preceding
claiming clause of a roller E operating the lever F and being guided by a fork k
which has a spur c adapted to run in a double groove a, b in a sleeve M secured
to the frame of the loom and having projections g and h designed to move the
roller E laterally at each revolution of the sleeve substantially as, and for the
purpose herein before described and as illustrated.
6. The improvements in looms for weaving hereinbefore described and illus-
trated in the accompanying drawing.
Dated the 19th day of June 1897.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.