Improvements in Measuring and Stopping Mechanism for Looms for Weaving Determined Lengths of Fabric.
Year: 1893

page_text: Date of Application, 12th May, 1893
Complete Specification Left, 12th Feb., 1894-Accepted, 17th Mar., 1894
PROVISIONAL SPECIFICATION.
Improvements in Measuring and Stopping Mechanism for Looms for
Weaving Determined Lengths of Fabric.
We, THOMAS BARRITT of Knotts, Hapton, in the County of Lancaster,
Blacksmith, and WILLIAM WALSHMAN BROTHERTON of 11, Pendle Street,
Padiham, in the said County, Mechanic, do hereby declare the nature of this
invention to be as follows:-
This invention relates to mechanism for measuring a given or determined
length of fabric, whilst the same is being woven, and immediately thereupon
stopping the loom.
In plain looms, the dial or indicator which is to determine the length of cloth
to be woven consists of two discs face to face with each other. The said discs are
adjustable by bolts one to the other, so that any particular part on the face of one
disc may thus be brought to any desired point on the other.
The said dial or indicator is worked from a change wheel and gear wheels,
mounted on a bracket fixed to the loom side, the same being worked from the
wheel on the measuring roller, or as it is sometimes termed "the double carrier
wheel" of the take-up. One of the said gear wheels is adjustable in an angular
slot, so as to be adjustable to any required variation in the change wheel.
On the circumference of the discs of the dial or indicator are formed slots,
into one of which on one disc, a lever when a determined length of cloth has been
woven falls, thereby putting into operation a tilting lever, which is so disposed as
to thereby instantly come in contact with the fork hammer and stop the loom.
The lever may be provided with two prongs to steady it on the circumference
of the disc.
Before the loom is again set in motion the said lever is placed by the weaver
ou the opposite disc, until another determined or required length of fabric has
been woven.
For dobbies or similar looms, the two discs of the dial or indicator are prefer-
ably fixed instead of being adjustable, and provided with rims close to each other
on their circumference. In the space between the rims, on the circumferences of
the discs are inserted screwed pegs or pins at any required distance apart. Nuts
for the purpose of fastening the adjustable screwed pegs or pins are first
introduced through slots in the faces of the discs before being tightened on
the adjustable screwed pegs or pins until the latter has been got to the required
position.
When a determined or predestined length of fabric has been woven, the
adjustable screwed pegs or the like put into operation a lever in connection with
the catches of the dobby.
1000
Dated this 11th day of M1903.
GEO.
DOWNING,
8, Quality Court, London, W.C., Agent.

page_text: Improvements in Measuring and Stopping Mechanism for Looms for
Weaving Determined Lengths of Fabric.
We, THOMAS BARRITT of Knotts, Hapton, in the County of Lancaster,
Blacksmith, and WILLIAM WALSHMAN BROTHERTON of 11, Pendle Street,
Padiham, in the said County, Mechanic, 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 mechanism for measuring a given or determined length
of fabric, whilst the same is being woven, and immediately thereupon stopping the
loom.
In plain looms, the dial or indicator which is to determine the length of cloth to
be woven consists of two discs face to face with each other. The said discs are
adjustable by bolts one to the other, so that any particular part on the face of one
disc may then be brought to any desired point on the other.
The said dial or indicator is worked from a change wheel and gear wheels
mounted on a bracket fixed to the loom side, the same being worked from a wheel
on the measuring roller. One of the said gear wheels is adjustable in an angular
slot, so as to be adjustable to any required variation in the change wheel.
On the circumference of the discs of the dial or indicator are formed slots, into
one of which on one disc, a lever, when a determined length of cloth has been
woven falls, thereby putting into operation a tilting lever, which is so disposed as
to thereby instantly come in contact with the fork bammer, and stop the loom.
The lever may be provided with two prongs to steady it on the circumference of
the disc.
Before the loom is again set in motion, the said lever is placed by the weaver
on the opposite disc, until another determined or required length of fabric has
been woven.
For dobbies or similar looms, the two discs of the dial or indicator are prefer-
ably fixed instead of being adjustable, and provided with rims close to each other
on their circumferences. Into spaces between the rims on the circumferences of
the discs are inserted screwed pegs or pins at any required distance apart. Nuts
for the purpose of fastening the adjustable screwed pegs or pins are first
introduced through slots in the faces of the discs before being tightened on the
adjustable screwed pegs or pins until the latter have been got to the required
position.
When a determined or predestined length of fabric has been woven, the
adjustable screwed pegs or the like put into operation a lever in connection with
the catches of the dobby.
In the accompanying drawings,
Fig. 1 is an elevation, and Fig. 2 a plan of our invention as used in plain
looms for measuring given lengths of cloth, and thereupon stopping the loom.
The dial or indicator consists of two discs A A adjustably fixed face to face
by bolt and screw B in concentric slots C formed in the said discs, so that any
particular part on the face of one disc may be brought to any desired point on
the other. The object of having the two discs adjustable is to increase the range
of the invention, and render it adaptable to various and different given lengths of
cloth. On the circumference of each disc are formed a notch or notches, slot or
slots D for purposes hereinafter explaine 1.
The said discs A and A' are fixed by boss F to stud E2 pushed through bush
or journal F carried by upright G adjustable in horizontal slot H' of bracket H.
Motion is transmitted in a positive manner to the said dial or indicator, through

page_text: the medium of gear and change wheels J, J J2 and J8 by chain wheel K, driven
from a wheel mounted on the shaft of the measuring roller. Similar to the dial
or indicator A the said gear wheels are all mounted on studs E E' carried by
uprights G and G' fixed by bolts to the bracket H, which is bolted to the
loom frame.
'
By this method of adjustment, it will be obvious any size of change wheel may
be used having any number of teeth, and thereby permitting of a great variation
in lengths of cloth to be woven, and greatly augmenting the capacity and usefulness
of the invention,
The action and disposition of the apparatus as applied to a plain loom will be
fully understood by reference to Fig. 3. Chain L is driven by chain wheel L'
mounted on the shaft of measuring roller L³. This motion is gradually imparted
to chain wheel K, which in turn through the medium of gear and change
wheels J, J, J2 and J³ very slowly causes the dial or indicator A. to revolve.
In this way a notch on one of the discs A of the dial or indicator is brought
under the bifurcated lever M, which is placed astride such disc, and is secured to
shaft M. When this happens the said lever falls into the said notch or recess
thereby causing tilting lever N also mounted on shaft M' to tilt, bringing rod O,
having bent hook O upon the weft fork, when the next stroke of the fork hammer
instantly stops the loom. In some cases, the rod O may be used independently,
and provided with two prongs, which rest astride the disc A. It may be supported
in position by slide brackets secured to the loom side.
Before the loom is again set in motion, the said lever M (or rod O if used alone)
is placed by the weaver on the opposite disc of dial A, until another determined
or required length of fabric has been woven, when it is then returned to its original
position.
We will now proceed to describe our improved measuring and stopping motion
as applied to looms, in which the aid of a dobby, drop-box or the like is required
at intervals. Fig. 4 is a plan view of this arrangement the driving and change
gear mechanism being identical with that already described in relation to Figs. 1,
2 and 3. The two respective discs A and A' are fixed together, and need not be
adjustable, the peripheries of the said discs being formed with rims close to each
other. At desired distances apart between the two rims are inserted adjustable
screwed pegs or pins P. Nuts are first introduced through slots in the faces of
the discs before being tightened on the adjustable screwed pegs or pins P, when
the latter may be got to the desired position.
As will be seen by Fig. 5, the means of driving this arrangement is similar to
the other. We need therefore only describe the means for bringing the dobby
into action at the required time. Swing lever Q mounted on bracket R carries
falling catch R' weighted at its other extremity, so that said catch will always
bear against the periphery of the dial A A, and, when raised to a certain point,
will fall and regain its original position by gravity. The dial A by its motion
brings the peg P under falling catch R' raising it and thereby depressing the
other extremity of lever Q, to which is attached cord S in connection with the
operating catch of the dobby, and thus bringing the pattern surface into play. In
some dobbies, or pattern operating mechanism, it is essential that a connecting rod
should be used in substitution of the cord S.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. The improved arrangement of measuring and stopping mechanism for looms
for weaving determined or predestined lengths of fabric, substantially as described
and illustrated in all the figures.
2. The dial or indicator consisting of two discs A and A¹ constructed and
arranged substantially as described together with the arrangement of gear and
change wheels for getting any required variation in the length of cloth to be

page_text: woven, and means for stopping the loom at intervals, substantially as described
and illustrated in Figs. 1, 2 and 3.
3. The dial or indicator A to be used in conjunction with dobby or like looms,
gear and change wheels, and means for setting in operation the pattern surface of
such dobbies at intervals, substantially as described and illustrated in Figs. 4 and 5
for the purpose set forth.
Dated this 10th day of February 1894
F. RICHMOND,
79, St. James Street, Burnley, Agent for Applicants.