AN IMPROVED APPARATUS FOR BURNING OFF THE LOOSE FIBRES ADHERING ESPECIALLY TO FINE YARNS. OR THREADS
Year: 1871

page_text: LETTERS PATENT to John Waugh Dawson, of Wellington Mills,
Pollard Street, in the City of Manchester, County of Lancaster,
Cotton Spinner, for the Invention of "AN IMPROVED APPARATUS FOR
BURNING OFF THE LOOSE FIBRES ADHERING ESPECIALLY TO FINE YARNS.
OR THREADS "
COMPLETE SPECIFICATION filed by the said John Waugh Dawson at
the Office of the Commissioners of Patents, with his Petition and
Declaration, on the 22nd December 1871, pursuant to the 9th
Section of the Patent Law Amendment Act, 1852.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
WAUGH DAWSON, of Wellington Mills, Pollard Street, in the City of
Manchester, County of Lancaster, Cotton Spinner, send greeting.
WHEREAS I am in possession of an Invention for "AN IMPROVED.
APPARATUS FOR BURNING OFF THE LOOSE FIBRES ADHERING ESPECIALLY TO FINE
YARNS OR THREADS," and have petitioned Her Majesty to grant unto
me, my executors, administrators, and assigns, Her Royal Letters

page_text: Patent for the same, and have made solemn Declaration that I am
the true and first Inventor thereof, and the same is not in use by any
other person or persons to the best of my knowledge and belief.
NOW KNOW YE, that I, the said John Waugh Dawson, do hereby
declare that the following Complete Specification, under my hand and
seal, fully describes and ascertains the nature of the said Invention, and
in what manner the same is to be performed, in and by the following
statement:-
For burning off the loose fibres adhering especially to fine yarns or
threads, I employ a Bunsen's burner constructed and used in the
following manner:-To the usual pipe admitting gas into any chamber
I attach a pipe connecting it to the burning apparatús, having at the
end thereof a screwed part, by which the burner can be adjusted in
position, so that the admission of gas and the mingling of gas and air
may take place at a point thoroughly under control. The quantity of
air so admitted I regulate by a revolving shutter or shutters so as to be
immediately altered, and either diminished or increased. The air and
gas when admitted pass into a chamber formed of an enlarged pipe of
suitable length, on the top of which I fix the perforated plate through
which the mixture is discharged, and on the top of which it is ignited.
Across the ignited mixture I draw the yarns or threads of the materials,
whether cotton, wool, or silk.
And in order that my Invention may be more fully understood and
more readily carried into effect, I will now proceed to describe the same,
reference being had to the accompanying Drawings on two Sheets, in
which Sheet 1 shows the construction and use of the Bunsen's burner,
and Sheet 2 shows an improved modification of the same.
In Sheet 1, a is the pipe by which gas is supplied to any room or
chamber in which my burning apparatus may be placed; is the pipe
connecting the pipe a with my improved apparatus. On the end of this
pipe I place a burner c of common form, which only admits a small
quantity of gas as compared with the quantity of air entering the mingling
chamber d. The end of the pipe 6 I screw some distance up, and place
a lock nut c¹ upon it, so that it may be adjusted in position suitable for
the best point for the mingling of gasses. I would observe that though
c is a burner the gas is not ignited thereat. d, the mingling chamber,
is furnished at its lower end with two cross slots for the admission of
air, over which I place a revolving shutter f, so as to have this point

page_text: entirely under control. When the gas and air have been thoroughly
mingled in the chamber d they pass through the perforated plate d³,
and are ignited on the upper side thereof. 9 and g¹ are the usual
pulleys by which the yarn or thread y is drawn and led over the flame
at a suitable speed, and the loose fibres adhering to the yarn in passing
are burned off.
On Sheet 2 I show a modification of the chamber d, into which the
air and gas are forced by two pumps of suitable size, and the number of
strokes of which in a given time are proportioned to the quantity
required. These pumps discharge themselves into the aerometer d, in
which the gas and air are completely mingled, and from which the
mixture is withdrawn as required by the chamber pipe a (see Sheet 1)
and supplied to the different machines on which burners are used. i is
a small forcing cylinder for gas, and ; another cylinder properly pro-
portioned for air; these cylinders supply gas and air to the aerometer d
by the pipes and j¹, and the mixture is collected over water and
supplied through the pipe a to each machine in the chamber as required.
By means of the bracket a bolted to the aerometer d, and which by a
small hole in one arm thereof embraces the strap rod r, and whose travel
is limited in either direction by the two stoppers s and s² fastened on the
strap rod, so that when the aerometer rises it puts off the strap p, and
when it falls it places the strap upon the pumping pulley st. The
supply of air and gas is thus automatically controlled. The stroke
of the pumps I lengthen or shorten by the discs t and u by a slot in
which (seen at v, Sheet 2,) in a separate Figure) it is adjusted and
controlled.
Having now described the nature of my Invention, and the manner
in which the same is to be performed, I declare as secured to me
thereby,―
Firstly. The improved apparatus or improved Bunsen's burner
described and shown, by which the loose fibres adhering to spun
yarns of cotton, woollen, or silk, are removed.
Secondly. The introduction of the adjustable parts described, and
shown into the construction of a Bunsen's burner, by which the gas
and air used are suitably admitted, mingled, and controlled; also the
chamber d, whether as modified on Sheet 2, or as shown on Sheet 1,
in which the ingredients, whether forced as on Sheet 2 shown, or as
entering by natural inclination as on Sheet 1, are thoroughly mingled

page_text: before discharge or ignition, and by which mixture I produce more
certainly than heretofore a flame suitable for burning loose fibres on
spun yarns, whether of cotton, wool; or silk..
In witness whereof, I, the said John Waugh Dawson, have hercunto
set my hand and seal, this Eighteenth day of December 1871.
JOHN WAUGH (L.S.) DAWSON.