Year: 1888

page_text: We, KONRAD GAMPER, of Sielce, near Sosnowice, Manufacturer, and RUDOLF
FARKACZ, of Warschau, Engineer, both in the Empire of Russia 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 tubular boilers, into each of the water tubes of which a
fire tube is inserted in such manner that the water space is between the internal
surfaces of the outer water tubes and the external surfaces of the inner fire tubes;
the heating gases from the furnace thus act upon the said water tubes from without
and upon the said fire tubes from within.
The water and the fire or flame tubes are each separately removable or withdrawable,
the connections between the separate pipes being effected through water-circulating
chambers into which the tube ends are fastened or secured by collars, bands, flanges,
screws, or in any other convenient or suitable manner.
In order that our invention may be readily understood we will fully describe the
same by reference to the accompanying drawings. Figure 1 being a vertical longi-
tudinal sectional view, and Figure 2 a transverse sectional view of a double tubular
boiler constructed according to our invention. Figure 3 shews on a larger scale than
the previous figures, and in vertical longitudinal section, the jointing of the water
and fire tubes and water-circulating chambers.
Figures 4 and 5 are similar views in which the constructional details of the tube
fixings are somewhat modified to that shewn at Figure 3, and Figure 6 shews a
modified form of bearing or sliding surface as hereinafter described.
a are the water tubes, the internal fire tubes, c the water space between the
tubes a and b, d the water circulating or connecting chambers, e being the heating
flues; fare spherical zone-shaped surfaces formed on the separate parts of the water
circulating chambers d; g is an annular packing ring being so shaped as to receive
the spherical zone-shaped surfaces before referred to.
In Figure 3 the jointing and packing of the chambers done with another is
shewn, they being held together by means of bolts h and a packing or joint is thus

page_text: obiained which will remain intact and at the same time allow of any signt motion
the said chambers d which may be occasioned by for example the expansion or
extension of the tubes either sectionally or longitudinally and in order to allow of
this motion of the hearing surfaces i the bolts are suitably formed..
In Figure 3 the connection of the water tubes a and fire tubes 6 with the water-
circulating chambers d such connections being formed by suitable collars as shewn,
and 5 are obtained by screws and
whereas the connections shewn at Figures
flanges.
In some cases instead of the surfaces of the water-circulating chambers d being of
spherical zone form as shewn at Figs. 1 to 5, the said surfaces may be shaped as
shewn at Figure 6 of cylindrical formation, and where found desirable several fire
tubes instead of only one as shewn, may be introduced into each water tube.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :
1. In tubular boilers, the external and internal heating of the water space by fire
tubes in the water tubes a for internal heating, while at the same time the exterior
surface of the said water tubes a is subjected to the furnace heat, the said tubes a
and b being also each separately removable, substantially as described.
2. In connection with such a tubular boiler, as claimed in claim 1, the packing or
jointing of the water-circulating chambers d by means of the spherical zone shaped
surfaces of the said chambers and the intermediate annular packing ring
substantially as set forth.
1000
KONRAD
GAMPER.
RUDOLF FARKACZ.
By Brewer & Son,
33, Chancery Lane, London,
Patent Agents.