Improvements in Non-conducting Coverings for Steam-boilers and the like.
Year: 1898

page_text: Date of Application, 27th Jan., 1898-Accepted, 25th June, 1898
COMPLETE SPECIFICATION.
Improvements in Non-conducting Coverings for Steam-boilers and
the like.
I, LEOPOLD WERTHEIM, of No. 10, Bahnhof Strasse, Cassel, in the German
Empire, Manufacturer and Merchant, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement:.
The present invention relates to improvements in the utilization of annealed
ashes for non-conducting purposes in steam- and hot-water-reservoirs.
By annealed ashes, let it be understood that I refer to the ash-dust which, in
steam-boilers, collects on the boiler-tubes and at the walls, and not the remains
obtained by burning the fuel. Every owner of a steam-boiler has to take care that
the interior boiler-surfaces, which come into contact with the fire and the gases
passing through, are often swept, because experience shows that the ashes which
adhere to these parts, prevent the development of steam.
On the other hand
however this layer of ash prevents the radiation of the heat contained in the
heat reservoirs. These ashes, which can be reduced to the finest powder, offer,
besides their non-conducting qualities, also the advantage of great lightness.
However, in order that they may be applied and kept in suitable thickness to hot-
water or steam-pipes, either exposed, expanded, or upright ones, these annealed
ashes require a device suitable for this object.
Such device, combined with the utilization of the new medium for the said
purpose, forms the subject of the present invention.
Fig. 1 of the accompanying drawing shows a mantle of this kind in longitudinal
section.
Fig. 2 is an end view.
Fig. 3 is a section on line I, II.
Fig. 4 shows a mode of manufacturing it suitable for upright pipes.
In the drawing, R is an enveloped pipe. The device employed for this pipe
consists substantially of two double-rim-plates, formed in two halves aa, placed
around the pipe R. The lower rims bb of the plates come as close as possible to
the periphery of the pipe R, while the upper rims serve to fix and support a
tin mantle A connecting both plates a a.
When the plates a a are put together by connecting their halves by means of
screws ss (the two said plates being placed around the pipe), the mantle A, which
may consist of one piece or be composed of several segments m, is, in the case of
horizontal pipes, placed round the upper rims 6b and fixed with small screws
at i, or with screws d reaching through (Fig. 2) so far that there is only a small
slit or opening left along the whole length of the pipe. Into this the annealed
ash is put as tightly and uniformly as possible. When this has been done the
mantle is closed, which can be suitably done by screwing the angle-shaped end-
edges completely together. When this is done, non-conduction is ensured. In
the case of upright pipes, the mantle A fixed only round one plate, is quite closed
and after filling the cylindrical hollow space so obtained with annealed ash, the
second plate a is inserted and screwed with the mantle. Fig. 4 shows a mantle
which is suitable in many respects for this purpose.

page_text: In consequence of the easy removal and cheapness, of the non-conducting
material, the pipe joints which frequently require access, can be rendered non-
conductive by a small tin mantle which connects the mantles A and embraces the
protecting material brought up at such places, so that the whole pipe is protected
against radiation.
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:
1. The rendering of steam and hot-water reservoirs and conduits non-conducting
to prevent the radiation of heat, by surrounding the same with annealed ashes,
substantially as and for the purpose set forth.
2. A protecting and fixing mantle for annealed ashes serving as non-conducting
medium, consisting of a tin mantle A resting or fixed on one, two, or more rim-
plates, which may be formed of one piece or of several segments, substantially
as and for the purpose set forth.
3. Annealed ashes and a mantle for fixing the same, applied to the joints in
pipe-conduits with pipes surrounded by other known non-conducting materials,
substantially as and for the purpose set forth.
010
G. D. HOWARD,
Of the Firm of Hughes, Son & Co.,
38, Chancery Lane, W.C., Agent for the Applicant.