A SELF ACTING KNOT AND SLUB -DETECTOR FOR USE IN KNITTING AND SIMILAR MACHINES
Year: 1884

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i.
PROVISIONAL SPECIFICATION.
I JOHN SMITH of 11 Westgate Shipley in the County of York Hosiery
Manufacturer and Dealer in, Hosiery and in Knitting and Sewing Machines do
hereby declare the nature of my invention for A SELF ACTING KNOT AND SLUB
-DETECTOR FOR USE IN KNITTING AND SIMILAR MACHINES to be as follows:-
I affix to a stand forming a crossbar (made of wood or iron or other suitable
material and placed near the knitting or other machine in connection with which
the invention is intended to be worked) a small metal bell-Beneath the bell
I affix a metal hammer so placed that the head thereof reaches into the interior of
the bell, this hammer I make with a shaft proceeding from it which shaft is
flattened at the base or lower end thereof-Such flattened base or end has a slit in
the centre which slit is so made as to be narrower. at its upper than at its lower
'extremity-The yarn, thread; or other filament used by the operator passes through
the alit before mentioned (being kept in place and regulated according to the
fineness of the yarn, thread or other filament in use by metal guiders affixed to
the crossbar) before it approaches the knitting or .other machine used by the
operator with the result that when a knot, or slub or other inequality in the surface
of the yarn, thread, or other filament used by the operator is found in the thread
such knot, slub or other inequality, in the act of passing through the slit in the
base of the hammer forces it out of its position, raises the hammer and causes the
bell to be rung thus giving the operator warning that a knot, slub, or other
inequality is approaching the machine-The hammer and shaft are affixed to a pin
and connected with a spring which latter causes-them-to resume their original
positions after the knot, slub, or other inequality in the yarn, thread or other
filament has passed through the slit-The invention is thus selfacting and-its-use
is to warn machine stocking knitters and others engaged in opérations of a similar
character that a knot, slub, or other inequality in the yarn, thread or other filament
they are using is approaching the machine and has to be dealt with and to proceed
accordingly.

page_text: ¡COMPLETE SPECIFICATION.
I JOHN SMITH of 11 Westgate Shipley in the County of York Hosiery
Manufacturer do hereby declare the nature of my invention for A SELF ACTING
KNOT AND SLUB DETECTOR FOR USE IN KNITTING AND SIMILAR MACHINES and
in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
I affix to a stand forming a cross bar (made of wood or iron or other suitable
material) and placed near the knitting or other machine in connection with which
the invention is intended to be worked a small metal bell-Beneath the bell I affix
a metal hammer so placed that the head thereof reaches into the interior of the
Bell: this hammer I make with a shaft proceeding from or connected with it-The 1
shaft is flattened at the base or lower end thereof and has a slit in the centre of
the base which slit is so made as to be narrower at its upper than at its lower
extremity-The yarn thread or other filament used by the operator passes through
the slit (being kept in place and regulated according to its fineness by metal
guiders affixed to the cross bar) before it approaches the Knitting Machine with 1
the result that.when a knot slub or other inequality is found in the surface of the
yarn thread or other filament in use the same in the act of passing through the
slit in the base of the hammer raises and releases the, hammer and causes the bell
to be rung thus giving the operator warning that a knot slub or other inequality
is approaching the machine-The hammer and shaft are affixed to a pin and 2
connected with a spring which latter causes them to resume their original positions
after the knot slub or other inequality has passed through the slit-Tho yara
passes from the reel through the eye in the cross bar, continues its course through
the slit in the base of the shaft of the hammer and, emerging through the eye in
the opposite end of the cross bar, presents itself to the operator ready for continuous 2
use until he hears the bell strike which means that a knot slub or other inequality
will be found in the approaching yarn and which will require to be dealt with in
order to prevent damage to his machine and to maintain his work free from the
blemishes caused by knota slubs and inequalities in the yarn thread or other
filament in use.
1
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
1. That my invention affords a means for Machine stocking Knitters and others (

page_text: 3. It enables the operator to produce a class of work of higher excellence than
is at present the case because the work when finished is free from the blemishes
and irregularities caused by knots alubs and other inequalities in the yarn thread or
other filament used.