Improvements in Stop Motions for Looms.
Year: 1893

page_text: Date of Application, 14th Feb., 1893-Accepted, 13th May, 1893
COMPLETE SPECIFICATION.
Improvements in Stop Motions for Looms.
JONATHAN RATCLIFFE CHARNOCK Springfield, Oswaldtwistle, Lancashire
Chemical Manufacturer & JOHN PARR James Street, Oswaldtwistle Lancashire
Weaver 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 :-
Our invention consists of improvements in stop motions for weaving looms, and is
in mechanism for automatically regulating the stop motion and also ensuring the
immediate stopage of the cloth in the loom in case of a breakage of the weft.
This mechanism is composed of the following, or its equivalent, upon the brake
rod or wire we fix a collar to actuate a radiating rod which is fixed by one end
upon a stud and the other coming in contact with the catch rod lever pushes it
back and brings out of action the rack wheel front catch and in this manner
immediately stops the motion of the cloth in the loom.
We also fix another collar upon the brake rod in such a position that when the
brake is lifted out of action it also raises the radiator rod and in this manner brings
into action the rack wheel front catch.
We also attach a fork regulator to act upon the weft fork and limit its motion
so as to ensure its more certain action and its better control over the loom.
In order that our said invention may be fully understood and carried into
practical effect we will now proceed more particularly to describe the same, and
for that purpose shall refer to the several figures and letters upon the annexed
sheet of drawings.
Fig. 1 shows the necessary parts to describe its action which is as follows.
When the loom is in motion the elevator a which is fixed upon the seting on rod
of the loom has raised the incline lever which is fixed upon the incline lever stud c,
and also by means of the brake rod or wire d has raised the brake lever and
brought the brake away out of contact with the brake wheelf, upon the rod d we
fix a collar g which by preferance has upon it two pronges gl and g". A side view
of this collar being shown at Fig. 3. The lower pronge g¹ having raised the
radiator rod h and allowed the catch rod lever i which is fixed upon the catch rodj
to bring into action the front catch of the rack wheel of the taking up motion of
the loom.
When the weft breaks the action of the fork ensures the immediate stopage of
the cloth, and also the stopage of the loom by the reverse action of the before
mentioned, which is as follows.
When the weft breaks the elevator a being fixed upon the seting on rod and
moving with it lowers the incline lever balso lowers the rod d which by means
of the collar y and the pronge g" brings down the radiator rod h which comes in
contact with and pushes over the catch rod lever i which acts through the catch
rod and brings out of action the front catch from the rack wheel of the taking up
motion of the loom, thereby ensuring the stopage of the cloth immediately, although
the loom may make a pick or two before it comes to rest. We also attach a fork
regulator to act upon the weft fork and limit its motion so as to make it more
certain and quicker in its action. This is shown by Fig. 2 on drawing and is
described as follows. is the fork arm of a loom / being the pivot or centre upon
which works the weft fork m. The positions m and m' show the limit of motion of
the weft fork and the manner in which it is effected by means of the fork regulator
which we fix upon the fork arm & and consists of the clip a which passes round the
end of the fork arm k and is held in position by the screw p, also the plate q which
is fastened to the aforesaid clips by means of the screw r. This plate q may be of
n

page_text: such a length that the weft fork comes in contact with it at each end at the same
time, so as to put little or no strain upon the weft fork, as shown by the position
of fork at m. Or it may be of such length as to come in contact at one
end only.
The radiator rod is mounted upon a stud t which is fixed into the framework
of the loom, a plan of aforesaid stud being shown by t', the pin w through this stud
being to keep the radiator rod in position. By preferance and for convenience in
adjustment we make the radiator rod in two parts which then consists of the boss
part u that works upon the stud t for the first part, this is bolted to the second
part which consists of the rod by means of the bolt r.
We also fix upon the brake rod or wire the collar o in such a position that when
the brake is lifted out of action by hand, it also raises the radiator and in this
manner brings into action the rack wheel front catch.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
.clain is
First The mechanism for automatically bringing into and out of action the rack
wheel front catch, as and for the purpose specified.
Second The arrangement of fork regulator as described and for the purpose
specified.
Dated this Third day of February 1893.
Witness-
JOHN HAWORTH,
Agent.
JONATHAN RATCLIFFE CHARNOCK.
JOHN PARR.