IMPROVEMENTS IN LOOMS FOR WEAVING
Year: 1881

page_text: LETTERS PATENT to John Bullough, Machine Maker, Edmund Tweedale,
Manager, and Samuel Tweedale, Foreman Mechanic, all of Accrington, in the
County of Lancaster, for an Invention of "IMPROVEMENTS IN LOOMS FOR
WEAVING.”
PROVISIONAL SPECIFICATION left by the said John Bullough, Edmund
Tweedale, and Samuel Tweedale, at the Office of the Commissioners of Patents
on the 6th July 1881.
JOHN BULLOUGH, Machine Maker, EDMUND TWEEDALE, Manager, and SAMUEL
TWEEDALE, Foreman Mechanic, all of Accrington, in the County of Lancaster.
IMPROVEMENTS IN LOOMS FOR WEAVING."
24
This Invention consists of improved adaptations and combinations of apparatus
for preventing floats by stopping the loom whenever the healds are not properly
raised or the shed is imperfectly formed.
According to one construction we employ in connection with the heald threads
elastic loops; these are passed over the upper heald staves. A lath or rail passed
through the loops carries a series of guide wires, there supporting a string connected
with a lever motion for operating upon the weft fork motion. The elastic loop
admits of any heald thread which may not have been properly lifted drawing on
the string or cord, which in turn actuates a lever and connection, calling into play
the weft fork motion, and the motion of the loom is arrested.
Another device for purpose aforesaid comprises a series of L levers connected to
a string or cord passed through the healds; when the latter are not properly lifted
the tension on the string or cord turns the lever or levers on its or their fulcrum
or fulcrums, whereon the other arm of the L lever acts against and presses upon
a pin or pins in a slide rod or bar, which on being moved endwise acts by means of
lever or connections upon the weft fork and stops the loom. Another construction
comprises a shaft extending across the healds, and in which is mounted a series of
counterbalanced levers; these serve to keep the healds tight during the regular
working of the loom; but when a heald or bealds is not raised the levers tilt or tip

page_text: and engage with a cross rocking bar and prevent the latter completing its traverse,
whereon a lever connected with the weft fork motion is brought into position for
and acts upon the motion referred to and stops the loom. Another construction
comprises a blade or comb rail, the teeth of which are turned at their outer ends
forming spring hooks, to which the loops of the healds are attached; under the said
hooks works a reciprocating feeler bar, and which is caught by any one or more of
the hooks that are drawn down by the heald or healds not well and sufficiently
lifted, whereon the weft fork is by connections acted upon and the loom is stopped.
Another construction includes the agency of electricity, and comprises elastic
loops forming the upper part of the healds, through which loops a lath is passed
and supports insulated wires; attached to the lower part of the elastic loops are
metal inverted cones, the lesser diameter of which is in contact with one of tho
wires during the ordinary working of the loom; when a heald or healds is not
properly lifted the elastic loop permits the larger diameter of the cone to come in
contact with and touch both wires and so complete the circuit, whereon a catch or
stop is brought into position to act on the hammer head or the weft fork and stop
the loom; each cone serves about four heald cords.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said John Bullough, Edmund Tweedale, and Samuel Tweedale, in the
Great Seal Patent Office on the 6th January 1882.
JOHN BULLOUGH, Machinist, EDMUND TWEEDALE, Manager, and SAMUEL
TWEEDALE, Foreman Mechanic, all of Accrington, in the County of Lancaster.
"IMPROVEMENTS IN LOOMS FOR WEAVING."
This Invention consists of improved adaptations and combinations of apparatus
for preventing "floats" by stopping the loom whenever the healds are not properly
raised or the shed is imperfectly formed.
Our Invention includes the agency of electricity, and comprises elastic loops
forming the upper parts of the healds, through which loops a lath is passed and
supports insulated wires; attached to the lower part of the elastic loops are metal
inverted cones, the lesser diameter of which is in contact with one of the wires
during the ordinary working of the loom; when a heald or healds is not properly
lifted the elastic loops permits the larger diameter of the cone to come in contact
with and touch both wires and so complete circuit, whereon a catch or stop is
brought into position to act on the "hammer head" or the weft fork and stops the
loom; each cones serves about four heald cords.
Such being the nature and object of this our said Invention we will now proceed
to describe the same in detail, and in order that the same may be fully understood
we have hereunto annexed a Sheet of Drawings, and have marked the same with
figures of reference.

page_text: 19, 20, on the tappet shaft 21 which imparts to them an oscillating motion, the
lever 18 being the ordinary weft hammer lever.
At 22 is a lug or projecting piece extending from the lever 16 over the hammer
lever 18, so that the levers 18 and 16 are both raised at each revolution of the
tappet 20; the lever 16 also having an independent motion given to it when the
shed is formed by the tappet 19, so that the ordinary hammer lever 18 acts along
with weft fork on the absense of weft, whereas the notch 15 of the lever 16 on
the armature 9 being raised butts or is forced against the armature 9, and this by
the connections 23, 24, moves the stop lever 25 on its fulcrum 26 and releases the
spring stop handle, as is well understood, and stops the loom.
Having thus fully described the nature and object of this our said Invention
together with the manner in which the same is to be or may be performed or
carried into practical effect, we would have it understood that what we claim as
our Invention is,-
in combination
with wires 5 and 6 of negative and positive poles, as shewn and herein fully
described.
Firstly. The use of the elastic loops 2, metallic connectors
Secondly. The combination of lever 16 acting on armature 9, the latter operated
through the agency parts 2, 4, 5, and 6, as herein fully described and illustrated
by Drawings.
In witness whereof, we, the said John Bullough, Edmund Tweedale, and
Samuel Tweedale, have hereunto set our hands and seals, this Fourth day
of January, in the year of our Lord One thousand eight hundred and
Witness,
E. N. HORNE.
EDMUND TWEEDALE. (L.S.)
SAMUEL TWEEDALE.
(L.S.)
JOHN BULLOUGH.
(L.S.)