Some eyewear

Usage examples of shades.

Acid black, Naphthol black, Naphthol green, Nigrosine, Fast blue, Water blue, and some others dyed in an acid bath, but little more than half the dye used on unchlored wool is required, while with Induline, more even and intense shades are obtained than is otherwise possible.

Wool -- Methods of Wool Dyeing -- Groups of Dyes -- Dyeing with the Direct Dyes -- Dyeing with Basic Dyes -- Dyeing with Acid Dyes -- Dyeing with Mordant Dyes -- Level Dyeing -- Blacks on Wool -- Reds on Wool -- Mordanting of Wool -- Orange Shades on Wool -- Yellow Shades on Wool -- Green Shades on Wool -- Blue Shades on Wool -- Violet Shades on Wool -- Brown Shades on Wool -- Mode Colours on Wool.

It is truly astonishing what a great range of shades can thus be dyed by using two or three dyes suitably mixed together, and one of the things which go to making a successful dyer and colourist is the grasping of this fact by careful observation, and working accordingly.

Treating the wool with chlorine has a material influence in increasing its capacity for taking dye-stuffs, and although but little attention has been paid to this circumstance by wool dyers, yet among wool printers it has come largely into use, and enables them to produce fuller and faster shades than would otherwise be possible.

This is important if uniform shades are to be dyed, for any excessive heating of any portion of the bath leads to stains being produced on the material in that part of the bath.

This alternation from one roller to the other is continued as long as is deemed necessary, much depending on the depth of colour which is being dyed, some pale shades may only take two or three ends, deeper shades may take more.

By adding the dye in portions this difficulty is overcome and more level shades are obtained, but it is met with in all cases of jigger dyeing.

While the shades are somewhat faster to light on wool than they are on cotton, they are no faster to soaping and in some cases not so fast.

The disadvantages are that the cost of labour is increased by there being two baths instead of one, and that the shades obtained are not always so full as with the one-bath method.

For dyeing with logwood and copperas or bluestone the process is not a good one, as it does not give as full shades as by the ordinary process.

For light shades the process will be found very useful, as these cost less than by any other process.

The kind of scouring that the fibres receive in this case need only be of a comparatively light character, but it must never be omitted, even for dark shades, as the traces of grease which the fibre contains are the causes of nearly irremediable stains in the dyeing operations.

In the succeeding sections will be given a number of recipes showing how, and with what dye-stuffs, various colours, shades and tints can be dyed upon wool.

This extra chrome bath fixes any colouring matter which may have been absorbed by the wool but not properly fixed by the mordant already on, it leads to fuller shades which are faster to rubbing and milling.

The B brand of these blacks gives shades slightly redder in tone than the B B.