A New or Improved Method of Oxidizing Indigo Blues and the like, and Apparatus employed therefor.
Year: 1894

page_text: Date of Application, 21st Mar., 1894-Accepted, 21st Apr., 1894
COMPLETE SPECIFICATION.
A New or Improved Method of Oxidizing Indigo Blues and the like,
and Apparatus employed therefor.
I, JAMES GRIME, of Rosebank Cottage, Busby, in the County of Lanark,
North Britain, Manager of Print Works, do hereby declare the nature of this
invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
This invention relates to a new or improved method and apparatus for oxidizing
goods in the process of dyeing indigo blues and the like and consists in the employ-
ment of a moveable endless band, made of cotton, woolen, or metal web, which is
fitted over and driven by two rollers, one of which is provided with means for
adjusting the tension of the said band.”
But in order that my said invention may be more readily understood and easily
carried into effect I will proceed to describe the same with reference to the accom-
panying drawings.
Figure 1 is a sectional elevation and Figure 2 a plan of the improved apparatus
employed in the carrying out of my invention.
Referring to the said drawings, I employ between each of the various dyeing
vats A, A an endless band B of cotton, woolen or metal web; the said band B is
passed over two rollers C, C', the one C of which is driven at a slow speed by any
suitable means, such as, spur, bevel or worm gearing, or by belt and pulley gearing
from the main shaft of the dyeing plant. In order to enable the said band B being
kept tight or adjusted to the proper tension I mount one of the rollers, preferably C₁,
in adjustable bearings c which are carried in suitable brackets c' and provided with
adjustable screws c² or their equivalent.
The whole thus forms a very effective and easy method of oxidizing indigo blues
and the like in which the operation is as follows:-
The piece of cloth D or other material on leaving the dyeing vat or box A
passes over the ordinary draw roller E and falls on to the endless band B in a
series of loose folds G; said endless band B carrying the piece of cloth slowly
forward to the point F, from which it passes over the draw roll E' over into the
dyeing vat or box A' and so on according to the number of vats or boxes used,
there being in all cases one endless band employed between every two vats or
boxes.
As a modification, I may dispense with the endless band and employ hand labor,
the material, being dyed and oxidized, being allowed to fall in loose folds which
may be turned over by hand every now and then as required.
Or, as another modification, I may employ a longer endless band than that shown
and allow the material, being dyed and oxidized, to fall flat thereon, the material being
carried or conveyed by the said endless band to the next dyeing vat.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
:-
1st. The improved method of oxidizing indigo blues and the like, substantially
as hereinbefore described.
2nd. In oxidizing indigo blues and the like, the employment of an endless band
between each of the dyeing vats or boxes, substantially as and for the purposes
hereinbefore described and shown in the accompanying drawings.
3rd. In oxidizing indigo blues and the like, the arrangement whereby the
material being dyed and oxidized falls in loose folds G on to the endless band B,

page_text: whereby the material is carried slowly forward to the next dyeing vat, substan-
tially as and for the purposes hereinbefore described and shown in the accompanying
drawings.
Dated this 20th day of March 1894.
JOHNSONS,
115, St. Vincent Street, Glasgow, Petitioner's Agents.