Year: 1886

page_text: Date of Application, 10th Sept., 1886.
Complete Left, 9th June, 1887.
Complete Accepted, 12th July, 1887.
I WILLIAM WARRINGTON of Fairfield Mills Droylsden in the County of Lancaster
Manager do hereby declare the nature of this invention to be as follows:-
"
This invention relates to that class of looms for weaving, looped and other fabrics
wherein "Dobbies or other similar pattern producing apparatus is employed, the
object thereof being to enable two three or more distinct patterns or designs to be
woven from the same machine as required and to make the change from one to the
other automatically and consequently to allow of greater variations therein than has
hitherto been possible without the use of Jacquard machines.
To effect this object I employ in the Dobby a pattern chain formed of bowls or
dises mounted on cross rods or bars. These bowls or discs are arranged in two three
or more distinct sets or series in such a manner that by a slight horizontal movement
of the pattern barrel which is caused automatically to slide endwise as hereinafter
described, the pattern woven by the loom may be changed. I also reduce the ends or
thimbles of the needles against which the pattern barrel and chain works so that
sufficiently wide spaces will be left for those sets of bowls or discs above named which
are not in action to pass between the said needles.
The position of the pattern barrel (which as before described is so mounted that it
can slide endwise) is adjusted automatically in the following manner.
Opposite to one end, of the axis of the "Dobby" barrel I mount a second barrel,
tappet or chain having two, three, or more "lifts" of different heights working
against the end of this axis, which is held in contact with the same by means of a
spring; and it will be evident that as this barrel, tappet or chain is caused to revolve
the different "lifts" will slide the "Dobby" barrel or cylinder endwise more or less
so as to bring the required set of bowls or discs opposite to the needles and effect the
"tread" required.
The revolution of this second barrel tappet or chain is effected by means of a ratchet
and pawl, the latter being mounted on a lever actuated from the crank shaft or other
convenient moving part of the loom.

page_text: As however the change from one kind of "tread" to another may only be required
to take place at considerable intervals I provide means of lifting and holding the pawl
out of reach of the ratchet whenever a long continuance of the same "tread" is
required so that the second barrel, tappet, or chain is only actuated when a change of
tread is desired.
For this purpose I connect the pawl by a link to one end of a lever, the other end
of which latter is connected by a link to a second lever which is provided with a stud
tooth or projection.
This stud tooth or projection works over a third pattern chain or card mounted on
a revolving cylinder and provided with holes and blank spaces in accordance with the
changes required, and it will be evident that as this third pattern chain or card
revolves each time that a hole is presented to the stud, tooth or projection on the
lever above mentioned, the latter is allowed to fall, and by its connection with the
pawl above described, it will raise the latter out of contact with the ratchet of
the second barrel tappet, or chain and thus stop the revolution of the latter; but
whenever a blank space is presented to the stud tooth or projection the reverse
movement will take place and the "Dobby cylinder" will be moved end wise.
The third pattern chain or card passes round a cylinder also actuated by a pawl
and ratchet the pawl being attached to a rod connected with the tappet shaft or other
convenient moving part of the loom and this rod is so arranged that the pawl can be
moved out of gear.
This change movement may in some cases be connected to the mechanism which
actuates the shuttle box of the loom so as to effect a change of "tread " together with
and by the same means as that of the shuttle.
Dated this 9th day of September 1886.
GEORGE DAVIES,
4, St. Ann's Square, Manchester,
Agent for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in Pattern Mechanism for Looms.
I WILLIAM WARRINGTON of Fairfield Mills Droylsden in the County of Lancaster
Manager 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 that class of looms for weaving all kinds of fabrics wherein
"dobbies" or other similar pattern-producing apparatus is employed, the object
thereof being to enable two, three or more distinct patterns or designs to be woven
from the same machine as required and to make the change from one to the other
automatically, and consequently to allow of greater variations therein than has hitherto
been possible without the use of Jacquard machines.
The nature of my invention and the manner in which the same is to be performed
or carried into practical effect will be readily understood on reference to the sheet of
drawings hereunto annexed and the following explanation thereof.
Fig. 1 is an end elevation of the framing of a loom and "Dobby" with my
invention shown as applied thereto.
Fig. 2 is a view of the reverse side of the "dobby" drawn to a larger scale, and
Fig. 3 is a detached view hereinafter more particularly referred to.
a, a is the end frame of the loom, and b, b is the frame of the "dobby." I employ
in the latter a pattern chain c, e formed of bowls or discs mounted on cross rods or
bars. These howls or discs are arranged in two, three or more distinct sets or series
(three sets 1. 2. 3 being shown on Fig. 2.) in such a manner that by a slight
horizontal movement of the pattern barrel d, d which is caused automatically to slide
end wise as hereinafter described the pattern woven by the loom may be changed.
I also reduce the width of the ends or thimbles of the needles e, e against which the
pattern barrel and chain c, c work so that sufficiently wide spaces will be left for those
sets of bowls or discs above named which are not in action to pass between the said
needles e, e.
Or I make the "dobby" wider for this purpose.
The position of the pattern barrel d, d (which as before described is so mounted
that it can slide endwise) is adjusted automatically in the following manner.
Opposite to one end of the axis f,f of the "Dobby" barrel I mount a second barrel
tappet or chain g, g having two, three or more
"lifts "
of different heights (three
being shown on the drawing) working against the end of the axis f,f which is held
in contact with the same by means of a spring h, h; and it will be evident that as this
barrel tappet or chain 9, 9 is caused to revolve the different "lifts" will slide the
"dobby" barrel or cylinder d, d endwise more or less, so as to bring the required set
of bowls or discs of the chain c, c opposite to the ends of the needles e, e and thus
effect the "tread" required.
The revolution of this second barrel tappet, or chain is effected by means
ratchet or stud wheel i, i (Fig. 1.) and a pawl k, k, the latter being mounted on a
f

page_text: lever 1, actuated by a link m, m from the crankshaft or other convenient part of the
loom.
As however the change from one kind of "tread" to another is only required to
take place at considerable intervals I provide means for lifting and holding the
pawl k, k out of reach of the ratchet i, i whenever a long continuance of the same
tread "is required, so that the second barrel, tappet or chain g, g is only actuated
when a change of "tread" is required.
For this purpose I connect the pawl k, k by a link n, n to a lever o, o fixed on a
shaft above, and a lever o¹, o¹ fixed on the other end of this shaft is connected to
a second lever p, p below which is provided a stud, tooth or projection 9 (see detached
view Fig. 3). This stud tooth, or projection 9 works over a third pattern chain r, r
mounted on a revolving cylinder s, s and provided with holes or blank spaces in
accordance with the changes required, and it will be evident that as this third pattern
chain r, revolves each time, that a hole is presented to the stud, tooth, or projection q,
the lever P P is allowed to fall and by its connection with the pawl k, k it will raise
the latter out of contact with the ratchet or stud wheel i, i of the second barrel tappet
or chain g, g and thus stop the revolution of the latter; but whenever a blank space is
presented to the stud 9 reverse movement will take place and the "Dobby" cylinder
or pattern barrel d, d will be moved endwise.
υ
The cylinder s, s round which the third pattern chain or card r, r passes (see Fig. 3)
is actuated by a ratchet wheel t, t and a pawl u, u which latter is attached to a rod
connected to a lever w, w (shown by dotted lines in Fig. 1.) and actuated by a
bowl x, x on a short lever fixed on the tappet shaft y, y, the pawl u, u being held in
gear with the ratchet wheel t, t by means of a spring z, z and so arranged that it can
be moved out of gear when it is not required to work.
Or the pawl u, u may be actuated from any other convenient part of the loom.
This change movement may if so desired, be connected to the mechanism which
actuates the shuttle box of the loom, so as automatically to effect the change of shuttle
at the same time, and by the same means as that of the "tread."
In order to allow the "Dobby" pattern barrel d, d to be moved endwise by hand
when required, a spring lever d', d' is provided at the other end of the axis f,f for
this purpose.
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 construction and arrangement of mechanism (substantially as hereinbefore
described and illustrated by the annexed drawings) whereby I am enabled to weave
two, three or more distinct patterns or designs from the same machine without the
use of the "Jacquard" and to make the change from one pattern to the other
automatically.
D
11
ديم