Improvements relating to Cases or Tins in which Laundry Powder Blue can be Held and from which said Blue can be Expelled.
Year: 1892

page_text: Date of Application, 18th June, 1892-Accepted, 20th Aug., 1892
COMPLETE SPECIFICATION,
Improvements relating to Cases or Tins in which Laundry Powder
Blue can be Held and from which said Blue can be Expelled.
I, JOHANN OTTO EGESTORFF, of Backbarrow House, near Ulverston,
Lancashire, Manufacturing Chemist, 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 has for object, the making and employment of cases or tins with
deep recessed bottoms, and comparatively deep recessed tops or lids, said lids
being perforated or punctured and lined with a flannel, canvas parchment paper,
or other material of open-mesh, or provided with holes out of unison with the lids
perforations, said liner's serving to check the issue of the powder blue when the
cases or tins are handled, and shaken, or knocked for expelling the blue through
the perforations of the cases or tins. By which means the issue of the blue
(powder) is capable of being regulated to the greatest nicety without the fingers
being soiled and without the fine powder (flour) of which the blue is characteristic
of being strewn or blown about as with paper packages having open ends at present
employed.
The cases or tins I purpose making in cylindrical shape and stoveprint them in
black and gold with markings as on a drum, the flanges of the bottom and of the
lid being like the heads on each end of a drum.
The several features above set forth and employed in combination constitute a
commercial novelty possessing great utility.
I am aware that cylindrical and other shaped boxes or tins have already been
used with a washing or laundry blue, but in that case the blue was in solid form
and it was necessary that the box be immersed in water and swayed to and fro for
the water to be stained to the required degree. This had the great disadvantage
of the blue becoming saturated to too great an extent, so that when the box was
laid aside, a draining occured which caused an inconvenience. Another dis-
advantage arose in the foregoing from the fact that pure ultramarine cannot be
"blocked" without an adhesive, which when dry makes the blue somewhat hard
and brittle, besides being reduced by the admixture which tends to lighten the
colour.
By my invention, pure ultramarine can be used, and by merely shaking the
box or tin, the quantity required can be expelled, the remainder in the box or tin
being reserved in a dry unsophisticated condition.
My invention is illustrated in the annexed drawings.
Figure 1 is a plan.
Figure 2 a vertical section.
Figure 3 an exterior elevation.
A is the cylindrical box, B the bottom which is deeply sunken from the edge
inwardly. C is the lid also deeply sunken and perforated in the sunken part at
places around from the centre, which perforations are out line with perforations
of an inner shield D for checking the issue of the powdered blue when the box is
shaken violently when inverted, the central part of the shield being loose, so that
during the shaking, it flops against the inside of the lid and permits the powder
blue to pass through the perforations to those of the lid in very small quantities
and fall into the water to be blued while the water is being agitated until the
requisite tint or tone of colour is imparted to it.
This gradual application of colour in fine powder to the water in a laundry is
very advantageous for the production of the proper tint, it also prevents lumps
forming which have to be crushed by the hand, many of which in practice sink

page_text: and are overlooked by the laundry woman and ultimately get licked up by the
linen, and form unsightly spots upon it.
'
Another advantage derivable from my invention is, the colour powder being
always dry its brightness can always be depended on.
As a distinguishing feature of my box, I stove print the exterior of the
cylindrical portion in black and gold with lines like those on a drum, as seen at
Figure 3.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
The employment of ultramarine in flour like powder in boxes or tins of drum
shape, and with drum markings on the exterior, the lid being perforated and lined
with a perforated or meshed material as a check to the issue of the powder, except
when violently shaken, as and for the purpose described.
Dated this 18th day of Tuna 1000
H. GARDNER,
Patent Agent, 166 Fleet Street, London,
Agent for the said J. O. Egestorff.
H. GARDNER,
Patent Agent, 166 Fleet Street, London,
Agent for the said J. O. Egestorff.