IMPROVEMENTS IN LOOMS FOR WEAVING.
Year: 1879

page_text: LETTERS PATENT to George Richardson, of Batley, in the County of York,
Mechanical Engineer, for the Invention of "IMPROVEMENTS IN LOOMS FOR
WEAVING.".
PROVISIONAL SPECIFICATION left by the said George Richardson at the
Office of the Commissioners of Patents on the 16th July 1879.
GEORGE RICHARDSON, of Batley, in the County of York, Mechanical Engineer.
"IMPROVEMENTS IN LOOMS FOR WEAVING."
My improvements consist, firstly, in a method of mounting the bell crank lever
carried by the sword, and through which the picking is effected, whereby I am
enabled to simplify the "fitting up" of the same. For this purpose I cast a boss
upon the sword of the slay to carry one end of a shaft, upon which the lever before
mentioned is keyed. The other end of the shaft is carried by a bracket, which I
attach to the sword by means of bolts. Upon the shaft carrying the lever I form
collars to keep it in position. I bolt the bracket in position, then drill through it
and the boss cast upon the sword the holes which constitute the bearings for the
above named shaft. Secondly. My Invention refers especially to rising box looms,
but may be adapted to single shuttle looms, and consists in an arrangement whereby
I am enabled to ensure the picker being drawn clear of the boxes when they are
changing, and also keeping the picker ready to receive the shuttle when coming
into or leaving the box.
To accomplish this I form one arm of the bell crank lever before referred to
that so it extends beyond the centre upon which the slay swings. To this arm is
connected the rod actuated by the picking cam, which when not picking consti-
tutes a fixed part. As the slay swings inwards for the picking to take place the
rod causes the bell crank lever to turn, and through the usual connections to place
the picker ready to receive or drive out the shuttle, as may be requisite. When
the slay is "beating up" the rod before referred to causes the lever to turn in an
opposite direction, thereby drawing the picker back so as to be clear of the boxes
during their changing when rising boxes are used. In another arrangement I use
a lever carried by a bracket attached to the side of the loom. One end of this
lever is connected to the picker, the other end is acted upon by the rod from the
lever actuated by the picking cam. As the end of the lever is beyond the centre
upon which the slay swings the action is similar to that before described.
The above mentioned bracket might be attached to the usual horn bracket carried
by the sword.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said George Richardson in the Great Seal Patent Office on the 16th January
1880.
GEORGE RICHARDSON,-of-Batley, in the County of-York,-Mechanical Engineer...
"IMPROVEMENTS IN LOOMS FOR WEAVING."
...My Invention consists, firstly, in a method of mounting the bell crank lever
carried by the sword, and through which the picking is effected. Secondly. In a
method of governing the motion of the picker..
The first part of my Invention is shewn at the partial side and end views of a
loom, Figs. 1 and 2, and Figs. 3 and 4 are detached views of certain parts which
more particularly refer to the improvement. At 1 is the sword turning, as usual,
upon the pin 2, which is carried by the frame of the loom. Upon the edge of the
sword is bolted a bracket 3, which for the present may be considered as ending at
the dotted line A, Fig. 1, although it is continued beyond that line for a purpose to
be hereafter referred to, and this bracket has a projecting part 4, which carries one
end of the centre pin 5 of the picking bell crank 6, the other end of the said pin
being carried by a boss 7 attached to the sword 1, and thus far the parts may be
considered those as substantially now used. It is however the arrangement and
method of adapting or fitting them up which constitutes my Invention. In doing
this I in the first place bolt the separately formed bracket 3, 4, to the sword, and
I then drill through it and the boss 7, in order to provide bearings for the pin 5.
This having been done I remove the bracket 3, 4, and adapt the pin 5 between it
and the boss 7, there being shoulders on the said pin for keeping it in position, and
by these means a facility of accurately fitting up is effected, and the parts are firmly
secured together. The bell crank 6 is actuated in any ordinary manner for the
purpose of this part of my Invention.
My second improvement is shewn at Figs. 1 and 2, before referred to, and as a
matter of construction is in a certain measure connected with that which has
already been described. The arrangement shewn is that of a rising box loom, to
which my Invention is more particularly applicable, but it may also be adapted to
single box looms. At 6 is the bell crank lever before referred to, turning upon its
centre 5, and one end of which is connected to the picking stick 9 by means of a
strap 10, and the other end carries a pin or stud 11 projecting in the line of the
centre of motion of the slay to a point beyond it. The stud 11 is connected by a
rod 12 to the usual lever 13, actuated by the cam 14 on the crank shaft. The
picking stick is carried by a bracket 15 turning on a stud 16 on the usual horn
lever 17, which in this instance is shewn as an extension of the bracket-3. before.
referred to, but which for the purpose of the formerly described part of my Inven-
tion was supposed to be discontinued at the dotted line A. The picking stick is
drawn in the direction of the arrow B by the coiled spring 18, one end of which
is attached to the bracket 15, and the other to. a bracket 19 bolted to the horn
lever 17. The spring 18 is prevented from drawing the picking stick beyond a
certain distance by a stop 20 on the frame 21, which carries the crank shaft. As
the slay is moved in the direction of the arrow C the bell crank lever 6 mounted
upon it is carried with it, which movement tends to turn the end of the stud 11 in
an upward direction, but this motion is prevented by the rod 12, which is jointed
to the lever 13, and the bell crank lever is therefore turned upon its centre in the
direction of the arrow D so as to turn the picking stick through the strap 10 upon
its centre in the same direction. This movement of the picking stick slides the
picker into the position ready for picking, and the cam 14 acting on the lever 13
and rod 12 drives out the shuttle in the usual manner. When the boxes are
changing it is required to draw the picker clear of their ends, which change, as is
well known, takes place when the slay is beating up, and consequently the stud 11

page_text: bas a tendency to be turned downward or in a direction opposite to that previously
described, but such downward motion is prevented by the spring 18 drawing the
picking stick, and this through the medium of the strap 10, bell crank lever 6, and
rod 12 drawing the lever 13 against the stop 20. The spring 18, governed by the
rod 12, not allowing the downward motion of the end of the stud 11 causes the
bell crank lever 6 to be turned in the direction of the arrow E, allowing the picking
stick to be turned upon its centre 16 by the spring 18, such movement drawing the
picker clear of the ends of the boxes during their changing.
Figs. 5 and 6 shew a modification of this part of my Invention. The rod 12 is
as before, but in this instance it is connected to the stud 11 through the medium of
levers 22, 23, but the action of the slay and spring 18 upon the said stud are the
same as those above described. The fulcrum of the lever 22 might be carried by
the horn bracket instead of the frame, as shewn.
Having thus described and ascertained the nature of my said Invention, and the
manner in which the same is to be performed, I desire it to be understood that I
claim as secured to me under the above in part recited Letters Patent and for the
purposes above set forth,-
Firstly. The arrangement and method of fitting up the bracket 3, 4, and parts
connected therewith, substantially as described.
Secondly. The method of governing the picking motion, substantially as
described.
In witness whereof, I, the said George Richardson, have hereunto set my hand
and seal, this Fifteenth day of January, in the year of our Lord One
thousand eight hundred and eighty..