A or Instrument for Preventing Deposit on the Interior of Kettles and other Vessels in which Water is Boiled.
Year: 1896

page_text: This Print is in accordance with the Original Specification as it stands after
Amendment (under Section 11 of the Patents, &c. Act, 1883) as required by
the decision of the Comptroller General of the 12th day of July 1897.
Date of Application, 23rd Apr., 1896
Complete Specification Left. 25th Nov.. 1896-Accepted 23rd Jan. 1897
Date of Application, 23rd Apr., 1896
Complete Specification Left, 25th Nov.. 1896-Accepted 23rd Jan. 1897
A New Article or Instrument for Preventing Deposit on the Interior
of Kettles and other Vessels in which Water is Boiled.
I, WILLIAM LAWSON DASII of 37 Durley Road, Stamford Hill, in the County of
Middlesex, Manufacturer, do hereby declare the nature of this invention to be
as follows:-
To prevent the formation of deposit upon the interior surfaces of kettles and
vessels in which water is boiled I employ an article or instrument which I make
from a waste material riz., the core or interior of the loofah. I take these cores
and cut them into short lengths, say two inches more or less according to the size of
the article which I desire to produce. Then say a dozen of these lengths 1 thread upon
a wire or string and so connect them together each being so held by one end. The
wire or string is joined to form a central ring, outwards from which the strips of
loofah core radiate. The strips are packed close together and so a disc is formed;
a centre or hub of metal or other material may be provided at the centre of the disc.
When this article or instrument is placed in a kettle and the water therein is
boiled, the earthy material thrown out of solution collects in the open network of
fibre constituting the loofah core in place of being deposited as scale on the interior
of the kettle or vessel.
Dated this 22nd day of Anril 1906
A New Article or Instrument for Preventing Deposit on the Interior
of Kettles and other Vessels in which Water is Boiled.
I, WILLIAM LAWSON DASH of 37 Durley Road, Stamford Hill, in the County of
Middlesex, Manufacturer, 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:-
To prevent the formation of deposit upon the interior surfaces of kettles and
vessels in which water is boiled I employ an article or instrument which I make
from a waste material viz. the core or interior of the loofah. I take these cores
and cut them into short lengths, say two inches more or less according to the size of
[Paise 11

page_text: the article which I desire to produce. Then say a dozen of these lengths I thread upon
a wire or string and so connect them together each being so held by one end. The
wire or string is joined to form a central ring, outwards from which the strips of
loofah core radiate. The strips are packed close together and so a disc is formed;
a centre or hub of metal or other material may be provided at the centre of the disc.
When this article or instrument is placed in a kettle and the water therein is
boiled, the earthy material thrown out of solution collects in the open network of
fibre constituting the loofah core in place of being deposited as scale on the interior
of the kettle or vessel.
Having thus stated the nature of my invention I will now describe more in detail
the manner in which I prefer to carry the same into practice.
I remove from the loofah the outer fine network of fibres which is the valuable
part to be reserved for other uses and I take the core which is of a much coarser
texture and reduce it to a thin sheet by passing it hetween metal rollers and so
exposing it to a heavy pressure. The loofah core being in a dry state has but
little resilience and after this treatment retains the form of a thin sheet not exceed-
ing one eighth of an inch in thickness. I cut pieces from the sheets to a form such as
is shown by Figure 1 of the annexed drawings. I assemble ten or a dozen of such
pieces upon a string and tie them together in the manner indicated by the
Figures 2 and 3 and to keep the pieces in due order I apply two buttons which may
suitably be of vegetable ivory or porcelain or bone. These buttons occupy the
centre of the group of pieces oue at the top and the other beneath, the two buttons
are connected by a string which is knotted together the knot being concealed
between the pieces. The article in this stage of its manufacture is shown by the
Figures and 5; finally it is soaked in hot water when the pieces of loofah core
resume their resilience and the article assumes the form shown by Figures 6 and 7:
the radial pieces of loofah core swell so that no interval is apparent between
them and they then appear like a fibrous diso in one piece. The buttons
may if desired he applied after the article has been soaked. Seum floating on the
surface of hot liquids may be removed by means of these articles by dipping them
into the pot when the scum will be found to adhere to the article and may be
removed with it.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I am aware of Specifications
of Letters Patent No. 24,208 of 1895 granted to Elizabeth Barnston Parnell and
No. 8003 of 1888 granted to John Langstaffe and Henry Daniel Peckover, and I
lay no claim to anything described and claimed therein respectively but I declare
that what I claim is:-
The new article or instrument herein described for preventing deposit in kettles
and the like and consisting of pieces of loofah core connected together and radially
arranged and with buttons or the like on either side aiding in securing the strips
in their proper relative positions.
Dated this 22nd day of November 1806