IMPROVEMENTS IN LOOMS FOR WEAVING
Year: 1880

page_text: LETTERS PATENT to Peter Banks, William Slater, and James Banks, all of
Adlington, in the County of Lancaster, for an Invention of "IMPROVEMENTS
IN LOOMS FOR WEAVING."
PROVISIONAL SPECIFICATION left by the said Peter Banks, William Slater,
and James Banks at the Office of the Commissioners of Patents on the 27th
September 1880.
PETER BANKS, WILLIAM SLATER, and JAMES BANKS, all of Adlington, in the
County of Lancaster. "IMPROVEMENTS IN LOOMS FOR WEAVING."
"
This Invention relates to that part of the loom known as the "dobby," and is
particularly applicable to that class of "dobbies" known as Willan and Mills',"
and the improvements are designed to simplify its construction and cause it to
work more steadily and accurately, and hence produce a better cloth and save
power in driving.
Hitherto the barrels which actuate the pegged lags or cards in this apparatus
Lave been worked by a link, one end of which was connected to the rocking shaft
mounted on the framework of the dobby, and the other end to the bell crank
lever which acts upon the barrel; this was found to be faulty, and necessitated a
complicated arrangement of brake being used on the other end of the shaft of the
barrel to steady its action and prevent its being jerked at each movement..
Our Invention consists in actuating the barrels direct from the tappet shaft
through a simple arrangement, which may be described as follows:-
On the lower end of the said bell crank lever we fix a bar or rod, which is
capable of being adjusted by set screws so as to alter the throw; the other end of
this bar is provided with a slot in which works a pulley; this pulley is fixed on a
bracket which is counected by a set screw to the end of the lever which is keyed
to the square rocking shaft, and which works the healds.
This rocking shaft is actuated by a lever which is pivoted to a connecting rod
attached to a crank on the tappet shaft.
By this arrangement the barrels have a direct and positive motion given to
them which causes the dobby to work much steadier and to be more certain in its

page_text: action, and at the same time the brakes and joints usually employed are dispensed
with.
Another part of our Invention relates to an arrangement for working that class
of "dobbies" known as "Bullough's," but with slight modifications it may also be
applied to other kinds of dobbies.
Instead of the "sway beam" which which actuates the shedding motion being acted
upon by long rods passing down through the warp and acted upon by tappets on
the tappet shaft, we shorten these rods and cause the beam to receive its motion
direct from the same arrangement which actuates the pattern barrels.
"
For this purpose these short rods or links depending from the ends of the
"sway beam
are connected to a horizontal lever, which is pivoted to a stud
fixed on the lower part of the framing of the dobby. To one end of this lever
is attached a connecting rod which is acted upon by a crank on the end of the
tappet shaft, and the other end of this lever acts upon the bell crank lever which
actuates the pattern barrel. Thus it will be seen that both the "shedding motion "
and the "pattern barrel" are actuated direct from the same source, which causes the
loom to work much steadier, save both material and power, and also produces a
better cloth.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Peter Banks, William Slater, and James Banks in the Great Seal
Patent Office on the 26th March 1881.
PETER BANKS, WILLIAM SLATER, and JAMES BANKS, all of Adlington, in the
County of Lancaster. "IMPROVEMENTS IN LOOMS FOR WEAVING."
a.s
This Invention relates to that part of the loom known as the "dobby," and the
first part of our Invention is particularly applicable to that class of dobbies known
"Willan and Mills"," and the improvements are designed to simplify its
construction and to cause it to work more steadily and accurately, and hence to
produce a better cloth and to save power in driving.
Hitherto the barrels which actuate the pegged lags or cards in this apparatus
have been worked by a link, one end of which was connected to the rocking shaft
mounted on the framework of the dobby, and the other end to the bell-crank
lever which acts upon the barrel. This was found to be faulty, and to necessitate
a complicated arrangement of brake being used on the other end of the shaft of
the barrel to steady its action and prevent its being jerked at each movement.
Our Invention consists principally in actuating the barrels of such dobbies
direct from the tappet shaft through a simple arrangement of mechanism adapted
to that purpose.
Such being the nature and object of our said Invention, we will now proceed to
describe in detail the manner in which the saine is to be or may be performed or
carried into practical effect, and in order that the same may be clearly understood
we have annexed hereunto a Sheet of Drawings illustrative thereof, and have
marked the same with Figures and letters of reference corresponding with those in
the following explanation thereof :-
Fig. 1 in the annexed Drawing is a side elevation of so much of a "Willan
and Mills" dobby as is necessary to illustrate the application of our Invention
thereto, and Fig. 2 is a similar view showing the application of our Invention to
what is known as "Bullough's dobby."
Referring to Fig. 1, a, a, is the bell-crank lever which acts upon the barrel b, b.
On the lower end of the said lever we fix a bar or rod c, c, which is capable of
being adjusted by set screws d, d, so as to alter the "throw" thereof; the other end
of this bar is provided with a slot e, e, in which works a bowl The latter is
carried on a bracket f, f, which is connected by a set screw to the end of the
lever g, g, which is keyed to the rocking shaft h, h, which works the healds.
The lever g, g, is actuated by a connecting rod i, i, the lower end of which is
attached to a crank on the tappet shaft of the loom. By this arrangement the
barrels b, b, have a direct positive motion given to them, which causes the dobby
to work much more steadily and to be more certain in its action, and at the same
time the brakes and joints usually employed are dispensed with.
The second part of our Invention, which is illustrated by Fig. 2 of the Drawings,
relates to an arrangement for working that class of dobbys known as "Bullough's,"
but with slight modifications it may also be applied to other kinds of dobbies.
Instead of the sway beam or rocking arm k, k, which actuates the shedding
motion being acted upon by long rods passing down through the warp and worked
by tappets keyed on the tappet shaft, we shorten these rods (as shown at 1, 1) and
cause this beam k, k, to receive its motion direct from the same arrangement
which actuates the pattern barrels b, b.
For this purpose the short rods or links l, l, depending from the ends of the
sway beam k, l, are connected to a horizontal lever m, m, which is pivotted to a
stud at n fixed on the lower part of the framing o, o, of the dobby.

page_text: To one end of this lever m, m, is attached a connecting rod p, p, which has a
vertical motion given to it from a crank on the end of the tappet shaft, and the
other end of this lever acts upon the bell-crank lever q, q, which actuates the
pattern barrels b, b.
The throw of this bell-crank lever q, q, being made adjustable in any suitable
manner.
Thus it will be seen that both the shedding motion and the pattern barrels are
actuated direct from the same source, which causes the loom to work much more
steadily, and saves both material and power, also producing a better cloth.
Having now described the nature and object of our said Invention, together with
the manner in which the same is to be or may be performed or carried into
practical effect, we wish it to be understood that we claim as our Invention the
above described arrangements of mechanism, whereby the pattern barrels and the
shedding motion are both actuated by one and the same lever direct from the
tappet shaft.
In witness whereof, we, the said Peter Banks, William Slater, and James
Banks, have hereunto set our hands and seals, this Twenty fourth day of
March, in the year of our Lord One thousand eight hundred and eighty
PETER BANKS.
(L.S.)
WILLIAM SLATER. (L.S.)
JAMES BANKS.
(L.S.)
опе.
PETER BANKS.
(L.S.)
WILLIAM SLATER. (L.S.)
JAMES BANKS.
(L.S.)