IMPROVEMENTS IN OR CONNECTED WITH DOBBY OR JACQUARD APPARATUS EMPLOYED IN LOOMS FOR WEAVING to be as follows :-
Year: 1884

page_text: J, HENRY AINSWORTH of Preston in the County of Lancaster Assistant Weaving
Manager do hereby declare the nature of said Invention for "IMPROVEMENTS IN
OR CONNECTED WITH DOBBY OR JACQUARD APPARATUS EMPLOYED IN LOOMS FOR
WEAVING to be as follows :-
"
This invention relates to improvements in or connected with dobby or jacquard
apparatus employed in looms for weaving and has reference more particularly to
the arrangement of double-cylinder dobby apparatus described in the Specification
of Letters Patent N° 1714 dated 30th April A.D. 1879, granted to John Ainsworth
and Henry Ainsworth in which a single line or endless chain of lattices consists of
two separate sets or systems of pegged lags so arranged that a lag of one set
producing a given pattern succeeds a lag of another set producing a different
pattern the lattice barrel being caused to rotate every pick instead of every other
pick and thereby presenting every other or alternate lag instead of each succeeding
lag to the jacks at each pick of the loom. In the arrangement of apparatus referred
to the change from one set to the next is effected by turning the lattice barrel or
catch wheel forward one tooth by hand. According to this my present Invention
means are provided for effecting the change automatically at the required times.
On one side of the dobby or jacquard machine I employ a second lattice or
endless chain of lags suitably supported in a horizontal position upon cylinders
or rollers rotating upon fixed studs fastened to the dobby framing. One of the
cylinders or rollers (hereinafter termed the "motor-cylinder ") is rotated to the
extent of one lag at the end of each system or pattern by means of a hook or
catch which engages with a ratchet wheel fastened to one side of a toothed wheel
supported upon the upper end of a rocking lever working on the motor-cylinder stud
the toothed wheel gearing into another toothed wheel secured to the inner end
of the motor-cylinder. The book or catch is allowed to fall and thereby to engage
with and pull over the ratchet wheel at the right time by the action of one of the
jack levers of the dobby to which it is connected the jack lever being actuated as
required by pegs on the dobby lattice. Over the axis of the motor-cylinder the
lower end of a vertical rod or lever provided with a friction bowl is so arranged
that upon a pegged lag passing under the friction bowl the peg will cause the rod
or lever to rise and at the same time to disengage or lift out of action at its upper

page_text: end one of the catches or hooks which rotates or pulls over the ordinary dobby
lattice barrel whereupon the rotation of the lattice barrel will cease during the
next pick when the motor-cylinder and the pegged lag will have been moved
forward from under the rod or lever by the action of the pegs at the end of the
succeeding system or pattern thus allowing the hook to fall into action and again
rotate the dobby lattice barrel as before. The lattice barrel will then go on to
present the succeeding system or pattern of pegged lags by reason of having missed
one pick during the time its hook or catch was out of aetion. By the above
described arrangement it will be evident that a given pattern will continue to be
repeated until a pegged lag passes under the vertical rod or lever and that upon the
intervals between the pegs depend the distances or length of a given pattern
between one change and another. The reciprocating movement of the rocking
lever which carries the ratchet wheel for rotating the motor-cylinder is preferably
imparted by means of suitably, mounted levers actuated by the rod which
communicates the up and down motion from the tappet shaft to the knives of
the dobby.
Although I have described my improved apparatus as applied to a dobby having
a pegged lattice and jacks it will be obvious that the same arrangement of apparatus
is equally applicable to jacquard apparatus in which perforated cards and needles
are employed.

page_text: I, HENRY AINSWORTH, of Preston, in the County of Lancaster, Assistant Weaving
Manager, do hereby declare the nature of my invention for "IMPROVEMENTS IN
OR CONNECTED WITH DOBBY OR JACQUARD APPARATUS EMPLOYED IN LOOMS FOR
WEAVING "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 improvements in or connected with dobby or jacquard
apparatus employed in looms for weaving and has reference more particularly to
the arrangement of double-cylinder apparatus described in the Specification of
Letters Patent N° 1714 dated 30th April A.D. 1879, granted to John Ainsworth
and Henry Ainsworth in which a single line or endless chain of lattices consists of
two separate sets or systems of pegged lags so arranged that a lag of one set
producing a given pattern succeeds a lag of another set producing a different
pattern; the lattice barrel being caused to rotate every pick instead of every other
pick and thereby presenting every other or alternate lag instead of each succeeding
lag to the jacks at each pick of the loom. In the arrangement of apparatus referred
to the change from one set to the next is effected by turning the lattice barrel or
catch wheel forward one tooth by hand. According to this my present invention
means are provided for effecting the change automatically at the required times.
In the accompanying Drawings A is the framing of an ordinary form of double
cylinder dobby apparatus fitted with the double hooks B, B¹, for actuating the
catch wheels C. C₁; D, D, the lattice barrels or cylinders and E. E, the lattice, all
being arranged to operate according to the Specification of Letters Patent herein-
above referred to.
On one side of the dobby or jacquard machine I employ a second lattice or
endless chain of lags 1 suitably supported in a horizontal position upon cylinders
or rollers 2 and 3 rotating upon fixed studs 4, 4, fixed to the dobby framing A.
One of the cylinders or rollers 2 (hereinafter termed the "motor-cylinder ") is
rotated to the extent of one lag at the end of each system or pattern on the main
lattice E. E, by means of a hook or catch 5 which engages with a ratchet wheel 6
(shewn in dotted lines) fastened to one side (the back) of a toothed wheel 7
supported upon the upper end of the vertical arm of a rocking lever 8 working
on the motor-cylinder stud 4, the toothed wheel 7 gearing into another toothed
wheel 9 secured to the inner end of the motor-cylinder 2. The hook or catch 5
is allowed to fall and thereby engage with and push over the ratchet wheel 6 at
the right time by the action of one of the ordinary jack levers on the dobby to
which it is connected through the arm 10; the jack lever being actuated by pegs
on the dobby lattice. Over the axis of the motor cylinder the lower end of a
vertical rod 11 (preferably mounted upon a pivotted arm 12 as shewn) provided
with a friction bowl is so arranged that upon a pegged lag 13 passing under the
friction bowl on the arm 12 the peg will cause the rod 11 to rise and at the same
time disengage or lift out of action at its upper end the catch or hook B which
rotates or pulls over the ordinary dobby lattice barrel D whereupon the rotation
of the lattice barrel D will cease during the next pick when the motor-cylinder 2
and the pegged lag will have been moved forward from under the arm 12 by the
action of the pegs at the end of the succeeding system or pattern on the ordinary
lattice E thus allowing the hook B to fall into action with its catch wheel C and
so rotate the dobby lattice barrel D as before. The lattice barrels D. D. will then
go on to present the succeeding system or pattern of pegged lags to the jacks by

page_text: reason of having missed one pick during the time its hook or catch was out of
action. By the above described arrangement it will be evident that a given pattern
will continue to be repeated until a pegged lag 13 on the lattice 1 passes under
the arm 12 and raises the rod 11 and that upon the intervals between the pegs 13
depend the distances or length of a given pattern between one change and the
other. The reciprocating movement of the rocking lever 8 is preferably imparted
through the medium of the connecting rod 14 jointed at its lower end to the
extremity of the lever 8 and at its upper end to the oscillating arm 15 which is
.connected at the extremity of its other arm 16 to the ordinary rod actuated from
the tappet shaft below.
Although I have described my improved apparatus as applied to a dobby having
a pegged lattice and jacks it will be obvious that the same arrangement of apparatus
may be adapted so as to be equally applicable to jacquard apparatus in which
perforated cards and needles are employed.
By the employment of my improved apparatus as above described handkerchiefs,
quilts, table covers, large and fancy checks, plaids, seamless bags, fancy dhooties,
and other fabrics in which are more than one pattern, heading, border, or quality
in the same piece may be produced; and by its application to looms having
drop-box or rotary shuttle-box mechanism large figured coloured checks, and
handkerchiefs having coloured figured side and cross borders may be woven.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is
The combination of parts constituting the improved apparatus for automatically
putting the hook or catch of dobby or jacquard apparatus in and out of action with
its catch wheel constructed, arranged, and operating substantially as described and
shewn in the Drawings.