IMPROVEMENTS IN THE METHOD OF AND APPARATUS FOR STOPPING: SPINNING FRAMES WHEN THE BOBBINS ARE AT ANY DEGREE OF FULLNESS
Year: 1875

page_text: .
PROVISIONAL SPECIFICATION left by James Bradley and John
Walbank at the Office of the Commissioners of Patents, with
their Petition, on the 3rd February 1875.
.
We, JAMES BRADLEY and JOHN WALBANK, of Keighley, in the
County of York, Mechanics, do hereby declare the nature of the said.
Invention for "IMPROVEMENTS IN THE METHOD OF AND APPARATUS FOR STOPPING:
SPINNING FRAMES WHEN THE BOBBINS ARE AT ANY DEGREE OF FULLNESS," to be as
follows:
T
This Invention relates to certain improvements in the method of and
apparatus for stopping spinning frames when the bobbins are at any
degree of fulness, and can be applied to ordinary frames using either fly
or cap spindles, or twisting frames for the spinning of wool, silk, mohair,
or any other material used in the manufacture of textile fabrics.
By the ordinary method the fulness or the proper quantity of yarn
required on the bobbins, so that the same can be used by the weaver
without waste, is left to the care and judgement of the attendant, which
is a difficult matter, especially in cap spinning, in consequence of the
caps covering the bobbins, so that the attendant is not able to use the
top end or nose of the bobbins. When the same are full and if neglected
:

page_text: and allowed to run the yarn runs off the ends of the bobbins on to the
spindles and causes great waste of weft by what is commonly called
smirling, and stoppage of machinery in consequence of the lifter motion
breaking.
The object of our Invention is to regulate the frame so that when the
bobbins have the quantity of yarn on required the frame will stop
without human aid, which we accomplish in the following manner :-On
to the ordinary chain rod, to which a reciprocating motion is imparted
by the lifter in the usual way, we attach a bracket, one side of which is
at an angle to the chain rod, and presses against a regulating tongue
secured to the bottom end of a rod, which is secured by brackets fixed
to any convenient part of the frame in such a manner that the rod can
move through them freely. The top end of the said rod is jointed to
one end of a. lever by a pin in the ordinary way, which lever is centred
in a bracket fixed to framework of machine or frame. The other end of
the said lever is placed so as to come on the under side of the starting
rod by which the frame is put in motion. Directly over the end of the
lever we cut the starting rod into two pieces, to the ends of which wo
attach by means of set screws two metal clasps fitting into each other.
It will be easily perceived that when the lifter has drawn the chain rod
until the angle of the bracket attached to the same presses down the
tongue and rod will cause the end of lever to lift up one of the metal
clasps until the same is disconnected from the other, when the part of
starting rod which is attached to belt fork will be drawn down by means
of one or more springs or weights and chain passing over pulley until
the belt is propelled on to the loose pulley, when the machine will
stop.
Our Invention can also be applied in the following manner:- Instead
of the bracket being fixed to the chain rod we attach to the lifter spindle
a catch in such a position that when the bobbins are full the catch will
press down the aforesaid tongue and rod and lift up lever until the clasps
are disconnected, when the starting rod will be drawn along and the
machine stopped, as before described.