AN IMPROVED TRAP PREVENTER FOR LOOMS
Year: 1884

page_text: I JULES BELICARD of No 33 Clifford Street Manchester, in the County of
Lancaster Engineer, do hereby declare the nature of my invention for AN IMPROVED
TRAP PREVENTER FOR LOOMS to be as follows :—
1
My Invention relates to an improved motion for Trap preventing in Looms.
At the present time while Looms are being worked on the present principle there
is liability of breakages at the ends in making the Cloth from the following causes
namely:-When the Shuttle is picked from left to right or from right to left it is
sometimes stopped in the Shed by broken ends or when there is a false pick, there-
fore when the stay comes forward if the tongues do not catch the frogs it will cause
what is termed a "Trap" which is brought about by the shuttle being caught,
causing a momentary stoppage and a breakage of the ends.
For the purpose of my Invention I mount on a convenient part of the loom side
a lever one end of which extends across the lathe from one side and under the
crank shaft on the other. This lever is pivoted on the loom frame and one end of
the lever has a slot which a finger works in, added to the stop rod. The other end
of the lever extends beyond the crank or tappet shaft or any other convenient place
where a knocker can be fixed to a wheel going the same number of revolutions as
the crank shaft, therefore when the Shuttle does not arrive at its destination the
knocker catches underneath the lever and causes the opposite end to fall and tho
tongues to catch the frogs and stop the loom. It will be seen that by this mode
of action all the swell springs can be suppressed without any danger of making
Traps.
It must be understood that the knockor (which passes underneath the lever
when the Shuttle does not arrive at its destination) slides over the lever when the
shuttle is properly picked.
I claim also as a portion of my said Invention a finger attached to the stop rod in
front of the sleigh or lathe going over a triangular piece of cast iron fixed in the
Loom frame so that when the Shuttle is picked properly the finger will work over
the said piece of cast iron but when the Shuttle is stopped in its course the finger
goes under the piece of iron and causes the loom to atop.
#
I claim also as a further portion of my said Invention any other fingers or levera
attached to the loom that may work or act in the same manner to prevent the
Traps" in conformity with this Specification.

page_text: I, JULES BELIOARD of 33 Clifford Street, Manchester in the County of
Lancaster, Civil Engineer, do hereby declare the nature of my Invention for
"AN IMPROVED TRAP PREVENTOR FOR LOOMS" and in what manner the same
is to be performed, to be particularly described and ascertained in and by the
following statement:―
"
Under the present system of working looms, the shuttle very often is stopped in
the middle of the pick owing to broken ends, or want of propelling force from the
picker (usually termed a false pick) Owing to this a tempory stoppage is caused
to the loom and a number of ends broken causing extra labour and expense. Now
the usual method of using tongues attached to a stop rod and working in "frogs
is very inefficient inasmuch as the catches often fail in their duty and the object of
my invention is to provide an improved apparatus which shall invariably stop the
loom if a false pick occurs from any cause. To attain this, I attach to the stop rod
of the loom lathe a finger or rod of suitable length, to catch in a triangular or other
conveniently shaped catch or bracket which I attach to a convenient part of the
loom frame in front of the lathe. This finger or rod projects in front of the lathe
and is so adjusted that in the event of the shuttle being perfectly picked the swell-
finger of the stop rod lifts it over the triangular catch or bracket but in the event
of a false pick the end of the finger or rod falls below the level of the catch or bracket
and stops the loom pressing the tongues firmly into the frogs. I also attach to the
stop rod instead of the ordinary swell finger, a flat spring, so that in case of a
shuttle having partially entered the box, the spring will bend and prevent the
breakage of the shuttle. I can however use the ordinary swellfinger if convenient,
or, I pivot upon a convenient part of the side of the looin frame a lever of suitable
length one end of which is formed into a slot within which a finger attached to the
stop rod works. The other end is carried back to any wheel going the same
number of revolutions as the crank shaft, upon this wheel is fixed a knocker (bowl
or tappet) which passes over the end of the lever if the pick is completed (the lever
being lifted by the finger from the stoprod): but if the pick is not completed the
knocker catches under the lever causing the opposite end to fall and so cause the
tongues to catch in the frogs and stop the loom.
In order that the foregoing may be better understood I send herewith a sheet
of Drawings in which Fig. 1 is an elevation and Fig. 2 a plan of the apparatus.
In both Figs. a indicates the finger or rod, 6 the triangular catch, c the ordinary
tongue, d the lathe or sleigh, e the flat spring substituted for the swell finger, f the
loom frame, g the frog or catch, and h the stoprod.
The dotted lines in Fig. 1 show the position of the finger when the loom is
working all right,
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
1st The apparatus, substantially as described and shewn herein before and in the
Ovim In wine

page_text: 2nd A finger or rod attached to the lathe or sleigh of the loom in such a manner
as to catch in a catch or bracket in case of a false pick and stop the loom either in
conjunction with or without the ordinary tongues and frogs substantially as
described and shewn hereinbefore and in the accompanying drawing.
3rd A flat spring in place of the ordinary swellfinger in combination with a
finger or rod, substantially as described and shown hereinbefore and in the
accompanying drawing.
4th A lever to stop a loom in case of a false pick actuated by means of a knocker
upon a wheel going the same number of revolutions as the crank shaft substantially
as described hereinbefore and in the accompanying drawing.
JOHN HENRY TOPHAM,
Agent to Applicant.