IMPROVEMENTS APPLICABLE TO LOOMS FOR WEAVING WIRE GAUZE
Year: 1877

page_text: LETTERS PATENT to George Bolden, of ¡Dukinfield, in the County of Chester,
Manufacturer, and John Cassidy, of Ashton-under-Lyne, in the County of
Lancaster, Draughtsman and Overlooker, for the Invention of "IMPROVEMENTS
APPLICABLE TO LOOMS FOR WEAVING WIRE GAUZE,"
Sealed the 6th October 1877, and dated the 11th April 1877.
PROVISIONAL SPECIFICATION left by the said George Bolden and John
Cassidy at the Office of the Commissioners of Patents on the 11th April
1877.
GEORGE BOLDEN, of Dukinfield, in the County of Chester, Manufacturer, and
JOHN CASSIDY, of Ashton-under-Lyne, in the County of Lancaster, Draughtsman
and Overlooker. "IMPROVEMENTS APPLICABLE TO LOOMS FOR WEAVING WIRE
GAUZE,"
Our Invention relates,-
Firstly. To a method of arranging and working the healds of looms for weaving
wire gauze. The treadles are connected by rods and straps to the heald rollers,
which give motion to "shafts" situate on the upper side of the warp. To these
one end of the healds are attached and they carry the warps in the usual manner;
but instead of being connected to another shaft they carry separate weights which
keep them downward. As now arranged, when one of the warp wires breaks it
gets across and causes the breakage of others; but with our arrangement, there
being no bottom "shaft," the weights allow the whole to move freely.
Secondly. Our Invention consists in a method of obtaining proper tension of the
weft during weaving. We place the eye through which the wire passes opposite
the end of the wire cop, and adopt a certain arrangement of roller pulleys. The
wire from the "quill" passes over a guide roller, from thence over a second roller
and between that and a third. As the shuttle traverses to and fro the wire plays
alternately upon the surface of the said third roller and upon a fourth. The roller
pulleys are so arranged that a greater tension is obtained when the shuttle is
travelling with the heel of the cop leading than when it is moving in the contrary
direction.

page_text: Another improvement relates to a method of applying drag to the quill, for
which purpose we adapt bristles to the shuttle and cause them to bear against the
wire.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said George Bolden and John Cassidy in the Great Seal Patent Office on
the 11th October 1877.
GEORGE BOLDEN, of Dukinfield, in the County of Chester, Manufacturer, and
JOHN CASSIDY, of Ashton-under-Lyne, in the County of Lancaster, Draughtsman
and Overlooker. "IMPROVEMENTS APPLICABLE TO LOOMS FOR WEAVING WIRE
GAUZE,"
.
Our Invention relates to a method of arranging the healds of loons for weaving
wire gauze. The treadles are connected by rods and straps to the heald rollers,
which give motion to "shafts" situate on the upper side of the warp. To these
one end of the healds are attached and they carry the warps in the usual manner;
but instead of being connected to another "shaft" they carry separate weights
which keep thein downward.
In the accompanying Drawing Figs. 1 and 2 represent respectively longi-
tudinal and transverse views of a portion of a loom constructed and arranged
according to our Invention. At a are the heald rollers worked by treadle and
strap in any usual manner, and at b the roller straps connected by adjustable
swivels c to the "shafts" d which carry the healds e, and at fare the warps which
pass through the said healds.
According to the usual method of working this apparatus "shafts," as is well
known, are adapted to the lower ends of the healds, which are thus positively
pulled down as well as lifted; but according to our Invention we do not use the
lower shafts but adapt in place thereof separate weights g to each heald. The
effect of this arrangement is as follows:-According to the usual method of working
when a warp breaks its rigidity, from its being of wire, prevents it from being
doubled up and drawn through the bottom warps as it would be if of fibrous
material; if, therefore, it were drawn down positively by the motive power it would
in most cases break some of the bottom warps; but according to our Invention
the weights g, although sufficient for effecting the shed, have not sufficient force
to cause such breakage and remain suspended by the lower warps.
Having thus described and ascertained the nature of our said Invention, and the
manner in which the same is to be performed, I desire it to be understood that
we claim as secured to us under the above in part recited Letters Patent and for
the purpose above set forth, the substitution of the separate weights as at g for the
bottom shaft" usually employed.
In witness whereof, I, the said George Bolden, have hereunto set my hand and
seal, this Tenth day of October, in the year of our Lord One thousand eight
hundred and seventy-seven.
GEORGE BOLDEN. (L.S.)