IMPROVEMENTS IN PIRN-WINDING MACHINERY
Year: 1879

page_text: LETTERS PATENT to Sam Mason, junior, of Manchester, in the County of
Lancaster, and James Conlong, of Radcliffe Bridge, in the same County, for the
Invention of "IMPROVEMENTS IN PIRN-WINDING MACHINERY.”
PROVISIONAL SPECIFICATION left by the said Sam Mason and James
Conlong at the Office of the Commissioners of Patents on the 19th April
1879.
SAM MASON, junior, of Manchester, in the County of Lancaster, and JAMES
CONLONG, of Radcliffe Bridge, in the same County. "IMPROVEMENTS IN PIRN-
WINDING MACHINERY."
Our Invention relates to the machinery employed in the winding of weft or
yarn in the filling of pirn bobbins, and has for its object to improve or simplify
the arrangements for weighting or regulating the pressure upon the pirns. To this
end we dispense with the ordinary weighted spindles, and we form screw threads
upon the pirn barrels and corresponding threads in the bosses of the driving pullies,
wharves, wheels, or parts, or in parts attached thereto or connected therewith. The
said screw threads are arranged to have such an effect as that the frictional contact
of the cups shall tend to screw the said barrels further into the said bosses or parts,
whereby the wound yarn is caused to press against the surfaces of the said cups,
and an effect is obtained corresponding to that obtained by weighting the pirns.
When carrying our Invention into effect we form the screw threads in a nut, which
is cast upon a chill formed to produce the required threads; and wo drive or fix
the said nut into or in the boss of the driving wharves. We form the threads upon
the barrel of the pirn by forcing the said barrel into one of the said chilled nuts, or
into a chilled nut or other suitable nut or die or set of dies, specially prepared to
cut or impress the threads in or upon the said barrel. We do not confine ourselves
to these indicated methods as the threads may be cut or formed by any suitable or
ordinary means or methods. We may tip the said barrel with metal

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Sam Mason and James Conlong in the Great Seal Patent Office on
the 18th October 1879.
SAM MASON, junior, of Manchester, in the County of Lancaster, and JAMES
CONLONG, of Radcliffe Bridge, in the same County. "IMPROVEMENTS IN PIRN-
WINDING MACHINERY.
Our Invention relates to the machinery employed in the winding of weft or yarn
in the filling of pirn bobbins, and has for its object to improve or simplify the
arrangements for weighting or regulating the pressure upon the pirns. To this end
we dispense with the ordinary weighted spindles, and we form screw threads upon
the pirn barrels and corresponding threads in the bosses of the driving pullies,
wharves, wheels, or parts, or in parts attached thereto or connected therewith. The
said screw threads are arranged to have such an effect as that the frictional contact
of the cups shall tend to screw the said barrels further into the said bosses
or parts, whereby the wound yarn is caused to press against the surfaces of the
said cups, and an effect is obtained corresponding to that obtained by weighting
the pirns.
In order that our Invention may be fully understood we have attached hereunto
a Sheet of Drawings made about the full size, and marked with letters of reference,
to which Drawings we will now refer. In Fig. 1, which is drawn partly in section,
A is a pirn bobbin, b is the driving wharve, and c is the cup or former, which may
be of any ordinary or suitable form and construction. In the barrel of the bobbin Å
are formed screw threads, indicated by the darker spiral lines d. We form the said
screw threads by the following means:- We obtain a hard metal nut by casting a
nut upon a chill which is formed with screw threads corresponding to the screw
threads which are required to be produced upon the pirn barrel; or we form the
said nut by boring and cutting, or by other suitable means. We then force or
drive the pirn barrel into the said nut, so as to form the spiral channels constituting
the screw threads. The said screw threads may also be formed by pressure within
dies, or by the use of cutting dies, or by any other suitable means. To the wharve b
is secured a metal tube e, the upper or outer end of this tube is pressed in dies,
which are formed to produce internal spiral projecting ribs which enter the screw
threads in the pirn barrel, so that the end of the tube acts as a nut, into which the
pirn barrel can enter by a screwing action. The end of the tube so formed is
separately represented by Fig. 2. The said nut may be otherwise formed or
obtained, as for example, a nut formed by a casting upon a chill, as hereinbefore
indicated, may be attached to the wharve or driving apparatus.
In the example the tube e is split in order that it may expand to some extent in
some cases when the pirn bobbin is withdrawn by the attendant. When the
bobbin is rotating during the winding operation the frictional contact of the wound
yarn within the cup tends to screw the pirn barrel further into the tube e, whereby
the wound yarn is pressed into the cup. Figs. 3 and 4 are illustrations of a modi-
fication in the nut which is mounted on the wharve b, or upon any other driving
part which may take the place of the said wharve. In this example the said nut
is formed in two parts f, which are embraced by a ring g of caoutchouc. When
the parts are in action the said ring presses the parts of the nuts together, so that
the two parts act as a nut upon the screwed barrel of the pirn. This arrangement
may also be used with the parts of formed with smooth internal surfaces not having
any spiral ribs to engage with the screw threads on the pirn barrel.

page_text: Having now fully set forth and indicated the nature of our said Invention, and the
means whereby we carry the same into practical effect, we would have it to be
understood in conclusion that we claim,-
First. The arrangements substantially as and for the purpose set forth and
indicated herein before, and in and by the accompanying Drawings.
And, Secondly. Forming screw threads upon pirn bobbins for the purpose set
forth and indicated.
In witness whereof, I, the said Sam Mason, junior, for myself and on behalf
of the said James Conlong, have hereunto set my hand and seal, this
Seventeenth day of October 1879.
SAM MASON, JR. (L.S.)