IMPROVEMENTS CONNECTED WITH THE CHANGEBOX MOTION IN FANCY LOOMS
Year: 1884

page_text: Wo, CHARLES EDWARD MIDDLETON, FRANCIS PHILIP MIDDLETON and ARTHUR
THOMAS MIDDLETON, Manufacturers, and ANDREW JACK, Manager, all of Adlington
near Chorley in the County of Lancaster do hereby declare the nature of said
Invention for "IMPROVEMENTS CONNECTED WITH THE CHANGEBOX MOTION IN
FANCY LOOMS" to be as follows:-
It consists in an additional combination and arrangement of machinery, by
means of which we are enabled to weave any even number of picks up to
one hundred or more, to one card, or only two picks to one card in the same chain
on Wright-Shaws Checking motion.
This combination or arrangement is as follows:-
Upon the main driving shaft of the loom we fix a camwheel, beneath this we
pivot a lever (a) of peculiar form, at right angles to the main shaft. This lover is
depressed at intervals by the camwheel, and returned again to its position by means
of a spiral spring attached to one end. To the other end is pivoted a ratchet, which
moves a ratchet wheel, attached to a shaft running beneath and parallel to the
main shaft, in suitable bearings.
To the other end of this shaft is attached a wheel or drum with rims, between
the rims and turned by the wheel is a loose endless chain or metal bands with
links or projections of different sizes so that they raise or depress a second lover
which rests upon the chain, and is hinged or pivoted at one end to the frame of the
loom, at right angles to the main driving shaft.
To the outside end of this second lever is pivoted by one end a short
perpendicular connecting rod which is formed at the other end into a flat slot,
(the sides of which are parallel to the main driving shaft). Within this slot works
one end of an angloiron (a) (pivoted from the angle) the other end of which is
formed into a triangular catch, which retains and holds, according to the pattern
which it is desired to weave, the lever of the loom which works the stirrup and
chain.
In addition to the foregoing we attach to the angleiron mentioned between tho
point it is pivoted from and the catch, a connecting rod, the other end of which is
attached to a second angleiron (pivoted at the angle) which is raised and depressed
by means of a lever which passes under the other end. This lever is retained in

page_text: its position at intervals by means of a third angleiron (pivoted at the angle) with
a catch at one end, the other end of which is raised by a lever which passes under
it. All the angleirons beforementioned are retained in position by means of spiral
springs and are released by means of the levers &c beforementioned. The two
levers last mentioned are of peculiar form, and pivoted from their centres at right
angles to the driving shaft. They are moved from their other ends by means of
small projections cast upon the ends of the cards.
We thus obtain two distinct controlling motions, one, by means of the endless
chain, which will weave large patterns, and the other by means of the levers
from the card chain which enables us to weave smaller patterns within the large
ones,
We also retain the main lever of the loom which actuates the stirrup and chain,
in its position by means of a spiral spring, instead of the cumbersome weight now
in use.
In order that the foregoing may be better understood we send herewith a sheet
of Drawings, on which Fig 1 is a section and Fig. 2 a plan of the apparatus. In
both Figs. b is the first lever which is depressed by the camwheel a (upon the
main driving shaft), b is the ratchet which turns the ratchet wheel k, d is the drum
with rims carrying an endless chain, the links of which lift the lever c which raises
by means of the connecting rod o the end of the angleiron e and by so doing releases
the lever which is the main lever of the loom and controls the stirrup and chain
at m.
This lever is also controlled by the connecting rod i which is moved by
the angleiron n which is controlled by the lever h which is in its turn controlled
by the angleiron g which again is controlled by the second lever h; both of the
levers h are moved from the other ends by means of projections upon the card
chain at m.
and fom the anclairang

page_text: We, CHARLES EDWARD MIDDLETON, FRANCIS PHILIP MIDDLETON & ARTHUR
THOMAS MIDDLETON, Manuf™ and ANDREW JACK Manager do hereby declare the
nature of our Invention for "IMPROVEMENTS CONNECTED WITH THE CHANGEBOX
MOTION OF FANCY LOOMS" and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement:―
It consists in an additional combination and arrangement of machinery as
follows:-
Upon the main driving shaft of the loom we fix a camwheel beneath which we
pivot a lever of peculiar form at right angles to the main shaft. The camwheel
depresses the lever at stated intervals, the lever being returned to its former
position by means of a spiral spring attached to one end. To the other end of the
lever is pivoted a ratchet which moves a ratchet wheel, attached to a shaft running
beneath and parallel to, the main driving shaft, in suitable bearings, Upon the
other end of this shaft is a wheel or drum with rims. Between the rims and
turned by the wheel is a loose endless chain or metal band with links or projections
of varying sizes so, that they raise a second lever which rests upon the chain and is
hinged or pivoted at one end to the frame of the loom at right angles to the
driving shaft.
To the outside end of this second lever is pivoted by one end a short
perpendicular connecting rod, which is formed at the lower end into a flat slot.
Within this slot works one end of an angle iron, pivoted from the angle, the other
end of which is formed into a triangular catch which retains and holds, or releases
(according to the pattern the endless chain is set for) the main lever of the loom
which works the stirrup and chain.
So long as the catch holds the main lever of the loom the card chain is stopped
and the loom weaves any number of picks desired to one card continuing to do so
until the catch is removed by the endless chain, thus enabling us to weave any even
number of picks to one card.
In addition to the foregoing, we attach to the angle iron mentioned, which
controls the main lever of the loom between the point it is pivoted from and the
catch, a connecting rod, the other end of which is attached to a second angleiron
(pivoted at the angle) the other end of which is raised and depressed by a lever
pivoted below and at right angles to it. This lever is retained in its position at
intervals by means of another angleiron (pivoted at the angle) with a catch at one
end, the other end of which is raised by another lever parallel to the first which
passes under it. These two levers are pivoted from the centre their outer ends
being raised and lowered according to the pattern by means of small projections
upon the ends of the cards. We thus obtain two distinct controlling over the main
lever of the loom motions one by means of the endless chain which stops the card
chain when required and thus enables us to weave large patterns and the other
by means of the levers from the card chain which enables us to weave smaller
patterns within the large ones The ratchet is thrown automatically in and out of

page_text: gear by means of a connecting rod affixed to the rod connecting the large catch
with the card levers which lifts a projection upon the ratchet. In certain cases we
also connect the two last levers, with the ratchet wheel catch of dobbies placed
above the loom by means of a thin connecting rod so as to adapt it for economizing
dobby chain. We also retain the main lever of the loom which actuates the stirrup
and chain in its position by means of a spiral spring instead of the cumbersome
weight now in use. In order that the foregoing may be better understood, we send
herewith a sheet of Drawings.
In this Fig 1 represents a plan and Figs 2 & 3 two elevations partly in section,
of the apparatus. In all the figures a indicates the ratchet lever & b the cam which
moves it upon c the main shaft of the loom & the ratchet, e the ratchet wheel which
turns the wheel with rims and so moves the chain g the links of which raise the
lever h which moves the angleiron k by means of the perpendicular connecting rod i
causeing it to release or hold the main lever of the loom. The angleiron k is also
controlled by the connecting rod n which receives its motion from the cardchain
at m (which is the cardchain already mentioned as controlled by the main lever
of the loom) by means of the lever p and the angleiron o and is held at intervals by
the catch of the angleiron r which is moved by means of the lever a by the card
chain t is the loom frame and u a support for the endless chain g, w is a rod which
raises the ratchet & by means of the projection and thus throws it out of gear
when the main lever of the loom is in action.
We do not confine ourselves to the particular position of the levers, chains, and
other parts of the mechanism as shown in the drawing but may alter the position
if more convenient for working.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed wo declare that what
we claim is
1st The apparatus, substantially as described and shewn hereinbefore and in the
accompanying drawing for the purposes set forth.