IMPROVEMENTS IN MACHINERY OR APPARATUS FOR SIZING AND DRYING YARN
Year: 1874

page_text: PROVISIONAL SPECIFICATION left by John Bullough at the Office
of the Commissioners of Patents, with his Petition, on the 13th
January 1874.
I, JOHN BULLOUGH, of Accrington, in the County of Lancaster,
Machinist, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN MACHINERY OR APPARATUS FOR SIZING AND DRYING YARN,"
to be as follows:-
My Invention relates to further improvements in machinery or
apparatus for sizing and drying yarn, for which Letters Patent dated
December 12th 1872, Number 3770, were granted-to me, the said John
Bullough.
In the Specification referred to I shew and describe cylinders with
ribs fastened on them at intervals so as to prevent the yarn coming in
contact with the hot surface of the metal, and I describe the cylinder or
cylinders as having part of its circumference incased or encircled.
In my present Invention I continue the casing the entire course of
the yarn from the size box so that the yarn in reality runs in a
continuous trough. Near the mouth of this trough, either at the

page_text: headstock or size box end, I place a fan or blower, which when
working discharges heated air in, through, and along this trough, and
so dries the yarn; the air is heated before it reaches the fan. Under
the headstock or other convenient position I place a number of tubes
heated externally by steam or gas. The air on its way to the fan
becomes heated by passing through these tubes, or hot air may be drawn
from any convenient source. I place one or more troughs made by
preference of copper under the headstock, such trough or troughs being
open to the air at the end nearest the weaver's beam, and connected at
the other end to the fan in such way that it must when working drive
its air through these connections and therefore through the trough or
troughs. Under these troughs I arrange a number of gas jets, which
cause the air to be heated in its passage through the troughs.
In the flue at some convenient point after the heated gases have left
the boiler I place a hollow-vessel, one end of which is open to the air,
the other end being connected by means of pipes to the air inlets of the
pan. The air becomes heated by the sides of the vessel, which derive
their heat from the hot gases of the flue. By preference I make the air
vessel deep and narrow, and place it in the flue edge way down. This
shape gives less facility for soot gathering, as the most of the surface is
vertical, and the better to prevent such accumulation of soot I suspend
this narrow deep vessel by chains, which have a weight attached to
the other ends, and are conducted over pulleys. Thus the vessel is
nearly counterbalanced by the weights, and when it is desired to raise
it out of the flue to clear it a slight pressure or pull at the chain is
sufficient. The better to secure the object I make the slit through
which the vessel rises or falls in or out of the flue very narrow, only
just sufficient for the breadth of the vessel, so that when it is raised the
sides of this slit act as scrapers.
I may remark that I do not confine myself to cylinders, as the heated
air may be sent through a chest or a continuous trough when no
cylinders are use or required. Also the cylinders may be heated by
steam as usual to eke out the drying, or they may be used as conducting
rollers merely.