MENTS IN LOOMS FOR WEAVING
Year: 1879

page_text: PROVISIONAL SPECIFICATION left by Arthur Sowden at the Office of the
Commissioners of Patents on the 17th April 1879.
ARTHUR SOWDEN, of Bradford, in the County of York, Machinist.
MENTS IN LOOMS FOR WEAVING."
"IMPROVE
The object of my Invention is to arrange an apparatus for operating upon and
regulating what are commonly known as drop boxes and circular boxes in looms
for weaving in such a manner that the boxes will skip from one box to any other
box required by the pattern or design of the piece the loom is weaving; also to
arrange the loom so that the same will stop when the weft is broken or exhausted
when the shuttle is at either end of the loom, or if there should be a click or catch
in the boxes, when picking or changing.
:-Above
I accomplish the first part of my Invention in the following manner:-
the tappet shaft I fix the ordinary broken back lever or levers, which is or are
actuated by tappets in the usual manner. Near to the bottom of the loom I mount
a number of bottom levers corresponding to the number of boxes fitted to the loom
and according to the manner the boxes are required to be worked. At one end of
these bottom levers I joint one or more back catches, which pass through suitable
guides and project upwards in a vertical or diagonal direction. Near to the top of
each of these back catches I fix a number of lovers, which are attached to the
ordinary jacquard or circular box card motion. When any of the last named levers
are actuated by the jacquard or top levers in connection with the circular box card
cylinder these levers cause the corresponding back catch or catches to come into
contact with a projection on the broken back lever or levers, which lifts up the
back catch or catches thus actuated, and the bottom lever or levers in connection
therewith. At the other end of each of the bottom levers I attach a rod, which
rod is in connection with a star lever for lifting or dropping and locking the boxes,
and when any of the bottom levers are actuated, as before described, the drop boxes
will rise or fall and skip to the particular box containing the shuttle required for
the next pick of the loom.
In order to actuate the drop boxes at the opposite end of the loom to which the
ordinary card motion is fixed, I secure a drop box lever or levers to a shaft which
At the other
extends across the going part or other convenient part of the loom.
end of this shaft is a lever connected to the drop boxes, and when the bottom
levers actuate the first named drop box lever in the manner described the other
drop box levers will also be actuated, and thus the drop boxes will rise or fall as
required.

page_text: In order to stop the loom, when there is what is technically termed a click or
catch, I mount a shaft in a suitable position across the loom, to which is coupled
two or more levers, one end of which is in connection with the broken back lever.
The other end of the said shaft is coupled to a lever in connection with the knock
off motion, so that when there is any click with the shuttles or the picking motion
the broken back lever will give way, and thus the loom will stop and prevent
breakages.
In order to regulate the circular boxes I mount one or more broken back levers
above the ordinary tappet shaft; this shaft is fitted with one or more tappets
having different throws. At or near the end of each broken back lever I secure a
lifting bar; these bars are actuated by levers in connection with the card cylinder.
Near to the bottom of the loom are mounted the ordinary bottom levers and pulling
rods, which are in connection with the ordinary circular box. To the other ends
of the bottom levers are attached the ordinary back catches, which are actuated by
levers in connection with the ordinary card motion. When any of the lifting bars
are actuated in the manner described the lifting bar or bars actuated in the upward
motion comes in contact with a projection fixed to a slide that is secured to the end
of the loom. This projection lifts one of the back catches the distance corresponding
to the throw of the tappet that has actuated the broken back lever, and thus causes
the circular boxes or drop boxes to skip one or more boxes, as required.
In order to obtain a longer dwell for the shuttle to pass through the shed, and
to obtain more time for the back catches to be placed on or taken off the projection
on the broken back lever or levers before mentioned, I fix one or more eccentrics
on to the crank or bottom shaft of the loom, which eccentric or eccentrics is or are
connected by a rod or rods to a lever or levers fixed near the bottom of the loom,
which work in suitable guides. To one end of the lever or levers before mentioned
I fix a rod, which is attached to the lifting lever or levers of the jacquard or shaft
machine, by which means I am enabled to obtain a steadier motion and more
time for the shuttle to pass through the "shed" and the back catches to be
actuated.
This
When the weft in any of the shuttles is broken or exhausted I stop the loom in
the following manner :-I fix a lever to each end of the going part on a shaft which
goes across the going part or other suitable portion of the loom. These levers are
connected together by means of a rod and to the ordinary knock off motion. The
weft is placed on the shuttle peg in the ordinary manner, and is conducted to the
ordinary shuttle eye through a metal loop fixed inside the shuttle recess.
metal loop is in connection with a tongue that projects beyond the face of the
shuttle. This tongue so long as the weft is not broken or exhausted depresses level
with the face of the shuttle when the same is passing either of the before named
levers, but in case the weft is broken or exhausted the metal loop before mentioned
prevents the tongue from depressing when passing either of the said levers, and
thus actuates the levers and knock off motion, and thus stops the loom.