IMPROVEMENTS IN DRESSING YARNS OR WARPS; AND IN THE MECHANISM OR APPARATUS EMPLOYED THEREFOR
Year: 1870

page_text: PROVISIONAL SPECIFICATION left by Saint John Vincent Day at
the Office of the Commissioners of Patents, with his. Petition, on
the 26th November 1870.-A communication from abroad by John
Hutcheson, of Alexandroff, Vladimir Government, in the Empire of
Russia..
-
I, SAINT JOHN VINCENT DAY, of No. 166, Buchanan Street, Glasgow,
in the County of Lanark, North Britain, Consulting Engineer, do hereby
declare the nature of the said Invention of "IMPROVEMENTS IN DRESSING
YARNS OR WARPS; AND IN THE MECHANISM OR APPARATUS EMPLOYED THEREFOR,”
to be as follows, that is to say :-
This Invention which relates to certain improvements in the means
employed for dressing "grey" or striped yarns or warps of cotton, wool,
linen, or other fibrous material, and whereby such dressing is effected more
economically and generally better than by the ordinary steam cylinder
slashing machines at present employed, consists (when used for dressing
yarns or warps of several colours) of a framing whereon the beams
carrying the several yarns or warps to be dressed are situated in suitable
brackets or bearings, the yarns or warps being led from each such beam

page_text: into the dressing boxes, in passing through which they travel over
grooved or ribbed conducting rollers, the grooves or ribs as the rollers
revolve agitating the dressing material and preventing it from settling
in the bottom of the said box. The squeezing rollers employed (in place
of being two pairs and the upper roller of each pair covered with flannel
or calico, as in existing dressing machines) consist under the present
Invention of one pair only, the lower of which is a copper roller,
and the upper one covered with india-rubber vulcanised to an extent
sufficient to resist the temperature at which the dressing operation is
conducted. These rollers are pressed together by weighted levers or
springs, which in either case are made adjustable. After leaving the
dressing boxes the yarns or warps are passed over the drying chambers,
carrying rollers being interposed so as to prevent their contact with the
heated surfaces of the plates of which such chambers are composed. The
drying chambers are preferably for the sake of economy so constructed
as to allow the passage through them of the waste heat and products of
combustion from the flues of any boilers or other furnaces which are
employed in the works wherein the dressing apparatus is used; but the
chambers may be heated by an oven or independent fires having
dampers for regulating the temperature. The large rollers in the
dressing boxes, the large rollers in the drying chambers, and the front
drag roller, are all of the same diameter and driven by a side shaft
having bevil or other gearing, so that the drag on the yarn or warp
is reduced to a minimum, and it therefore leaves the machine in a
pliable state and with its elasticity unimpaired. After being dressed
the warp is wound on the beam after passing between consolidating
rollers, thus producing a firmer warp and enabling a greater length of
warp to be wound upon the warp beams.
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The apparatus arranged with several dressing boxes, as herein-before
described, is also applicable for dressing yarns or warps in the " grey'
state, but when yarns or warps are in that state, or all of one colour,
they may be dressed by passing them through one dressing box. Each
dressing box is provided with a reed through which the yarns or warps
are drawn.