Improvements in Apparatus connected with the Putting-in of Cross- borders in Looms for Weaving.
Year: 1895

page_text: Date of Application, 22nd Jan, 1905
Complete Specification Left, 22nd Nov., 1895-Accepted, 28th Dec., 1895.
Complete Specification Left, 22nd Nov., 1895-Accepted, 28th Dec., 1895.
IRUVIDIONAL DIECIFICATION.
Improvements in Apparatus connected with the Putting-in of Cross-
borders in Looms for Weaving.
We, ALFRED BIRTWISTLE of Lower Fold, Great Harwood, in the County of
Lancaster, Cotton Manufacturer, and TIMOTHY BENNETT, of 10, South View, in
the same place, Weaving Manager, do hereby declare the nature of this invention
to be as follows:-
This invention has reference to apparatus for accurately' and' automatically
indicating to the weaver the points at which cross-borders are to be put in during
the weaving of dhooties and other cloths in which cross-borders are introduced at
given intervals or distances apart from each other. According to our said invention
the loom is caused to be automatically stopped when the required length of plain
cloth from the last previously put-in border has been woven. The ordinary
method of indicating to the weaver when to put in the cross-borders is by means
of coloured marks made or printed on the warp threads as the warp is being
drawn on to the warp beam in the taping or sizing machine but it is found in
practice that this system is unreliable and that the cross-borders are seldom if
ever put in at regular or corresponding intervals.
In carrying out our invention we employ an endless pitch chain preferably
horizontally disposed or stretched between a chain wheel fastened upon the axis
of the emery roller and another chain wheel serving as a carrier and rotating
on a fixed stud. The endless chain on one side carries a projecting pin which as the
chain travels round-actuated by the rotation of the emery roller-gradually
reaches and presses back the lower arm of a pivoted lever whose upper arm in
the form of a bent finger is thereby caused to press upon the weft fork in such
manner as to prevent it from lifting and so causing the stoppage of the loom.
Thereupon the pitch wheel on the emery roller axis may be loosened until the
cross-border or borders have been put in to be again fastened when the weaving
of another length of plain cloth is to be resumed. It will be obvious that the
length of the endless chain and the speed at which it travels will determine the
intervals at which the interference with the weft fork mechanism takes place
and the consequent stoppage of the loom.
D1 100-11....
ст.
100x
.;

page_text: Improvements in Apparatus connected with the Putting-in of Cross-
borders in Looms for Weaving.
We, ALFRED BIRTWISTLE, of Lower Fold, Great Harwood, in the County of
Lancaster, Cotton Manufacturer, and TIMOTHY BENNETT, of 10, South View, in
the same place, Weaving Manager, 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 has reference to apparatus for accurately and automatically
indicating to the weaver the points at which cross-borders are to be put in during
the weaving of dhooties and other cloths in which cross-borders are introduced at
given intervals or distances apart from each other. According to our said
invention the loom is caused to be automatically stopped when the required length
of plain cloth from the last previously put-in border has been woven. The
ordinary method of indicating to the weaver when to put in the cross-borders is
by means of coloured marks made or printed on the warp threads as the warp is
being drawn on to the warp beam in the taping or sizing machine but it is found
in practice that this system is unreliable and that the cross-borders are seldom if
ever put in at regular or corresponding intervals.
In carrying out our invention we employ an endless pitch chain preferably
borizontally disposed or stretched between a chain wheel fastened upon the axis
of the emery roller and another chain wheel serving as a carrier and rotating on
a fixed stud. The endless chain on one side carries a projecting pin which as the
chain travels round-actuated by the rotation of the emery roller-gradually
reaches and presses back the lower arm of a pivoted lever whose upper arm in the
form of a bent finger is thereby caused to press upon the weft fork in such
manner as to prevent it from lifting and so causing the stoppage of the loom.
It will be obvious that the length of the endless chain and the speed at which it
travels will determine the intervals at which the interference with the weft fork
mechanism takes place and the consequent stoppage of the loom.
In the accompanying drawings,
Figs. 1 and 2 are side views and
Fig. 3 a plan view illustrating the application of our invention to a loom of
ordinary kind.
a is the endless pitch chain stretched between the chain wheel b fastened upon
the axis of the emery roller R-indicated by a circle of broken lines at Figs. 1
and 2 and another chain wheel c rotating upon the stud d. "The stud d projects
from the side of a boss or enlargement d' (see Fig. 3) which is adjustably movable
on the fixed rod e to suit different lengths of chain required from time to time for
cross-borders at various distances apart. The chain a carries a pin f which as
the chain travels round gradually reaches and presses against the lower end of
the finger y depending from the horizontally movable bar h which is jointed on to the
lower end i of a pivoted lever whose upper arm in the form of a bent finger ; is
thereby caused to press upon the weft fork k (see Fig. 2) and prevent it from
lifting thus causing it to engage with the ordinary vibrating hammer / and to
operate the "knocking-off lever" mechanism m and so effect the stoppage of the
loom in the usual manner.
The rod e is held within suitable brackets or hangers n n fastened to the ordinary
framing o of the loom and at that end adjoining the emery roller it is bent at
right angles so as to form an arm s which holds the lower end of a spring p
attached at its upper end to the pivoted end of the horizontal bar h. The finger g
may be readily disengaged from the pin f by simply lifting the outer end h₁ (see
Fig. 2) of the bar h whereupon the pull of the spring p will bring the bar the

page_text: bent lever i j and the weft fork k back again to the positions shewn at Fig.
ready for the finger g to meet the pin f as before when it comes round after the
next journey or traverse of the travelling chain. q is a depending arm having a
vertical slot answering as a guide bearing for the bar h.
Having now particularly described and ascertained the nature of the said inven-.
tion and in what manner the same is to be performed we declare that what we
claim is :-
In a loom for weaving the use or employment for the purpose specified of
apparatus comprising an endless travelling chain acting in combination with lever-
mechanism for holding down the weft fork and so causing the automatic stoppage
of the loom constructed and arranged substantially as herein described and shewn.
in the drawings.