Improvements in Apparatus for Use in Galvanizing Metals.
Year: 1899

page_text: Date of Application, 3rd Feb., 1899-Accepted, 2nd June, 1899
COMPLETE SPECIFICATION.
Improvements in Apparatus for Use in Galvanizing Metals.
I, FREDERICK WILLIAM GOLBY, of 36, Chancery Lane, in the County of Middlesex,
Patent Agent, do hereby declare the nature of this invention and in what manner
the same is to be performed, as communicated to me by Hermann Schaefer,
Manager of Tube Rolling Mills, formerly Candoir, at Ekaterinoslaw, South Russia,
to be particularly described and ascertained in and by the following statement:-
---
As is doubtless known to most persons acquainted with this particular industry,
it is not the bottom, but the sides of a boiler employed for galvanizing metals,
which are first corroded, the corrosion occurring at the spot where the upper
surface of the liquid comes into contact with the sides of the boiler. The latter
thereby naturally becomes unserviceable and hitherto it has been necessary to
replace it by a new one.
By this invention, the difficulty is got rid of as far as possible, by means of
the novel construction of boiler in combination with the improved method of
setting up the same and an undue wearing away thereof is prevented.
In the accompanying drawing :-
Fig. 1 shows the arrangement in longitudinal section, Fig. 2 is a plan of the
same, Fig. 3 is a longitudinal section, along the line CD of the drying chamber.
Fig. 4 is a cross section of the complete arrangement. Fig. 5 is a section, along
the line G H through the outlet chamber 12 which regulates the heat, Fig. 6 is
a front elevation of the furnace, Figs. 7 & 8 and 9 are different sections of the
boiler and Figs. 10 and 11 show details, the former showing the drying plate 15
in section and in elevation and the latter the stone arch or vault of the furnace.
The same parts are lettered to correspond throughout.
The boiler 6 represented in the case illustrated is intended for zinking pipes
and is therefore made oblong and with a semi-circular bottom. The inner edge
of the boiler is furnished with a fire resisting covering 7, which is fixed by rivets.
This covering 7 must be well hammer tightened, as must also the rivets, in order
to prevent any leakage. If, in the course of time, the covering should beconie
corroded, it can be easily replaced by a new one, and this operation may be
repeated until the remainder of the boiler, the bottom for instance, has become
unserviceable.
The covering 7 can also be applied to any boiler that may have been discarded
as no longer serviceable, so that after such covering as illustrated if Fig. 9, has
been fixed, the boiler can be again brought into use. The space formed between
the covering and the wall 6 of the boiler, owing to the wearing away of the
latter, is filled in with a mixture of red-lead and zinc-white.
The boiler setting illustrated in Figs 1, 2 & 4 is connected with a drying
chamber 14, so that, without any further special expenditure of coal or heat, part
of the tubes which have been treated with acid are quickly dried preparatory to
being placed in the furnace, while the others are under treatment in the furnace.
The boiler furnace 1, held together by the tie bolts 3, is placed at the side and
covered with fire-proof stones 2, which are furnished with cramps. On the
bottom of the ash-pit is a sheet iron box 4 filled with water. The tongue 5,
Figs. 1 and 2, divides the heating gases into two streams which flow through

page_text: the flues 9 along the two sides of the boiler and through curved channels 10, and,
after passing the drying chamber 14, escape through the channel 17 into the
chimney 19. The tongue 5, which extends around the boiler, like a fork, nearly
to the middle thereof, also serves to protect the boiler against the flames coming
from the furnace. The stream of heating gases in the flue 9" is generally speak-
ing decidedly stronger than that in 9, in consequence of which a slide 11 is
provided in the curved part of the former, for the purpose of enabling the
strength of the stream to be regulated. The openings 13 in the inspection
chamber 12, which can be easily closed up, serve the same purpose. The plate 15
of the drying chamber 14 is ribbed above and below and, in order to carry off
the acid from the pipes which have to be dried, is fixed in an oblique position.
A damping contrivance 16 keeps the gases back in the flues 10, allowing them
only to pass out slowly through the drying chamber 14 and through the outlet
channel 17, which is furnished with a principal regulating slide 18, into the
chimney 19, so that their heat may be duly utilised.
The whole boiler arrangement has been constructed with special regard to the
greatest cheapness and the utmost effect and convenience.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:―
Improved arrangement of a boiler of novel construction, for galvanizing metals,
the distinguishing feature of which is a boiler 6, the inner edge of which is
covered with a fire-resisting cover 7, whereby the walls of the boiler, where so
covered, are protected against the corrosive action of the metal, such boiler being
further provided with a tongue 5 running around it as far as the middle of its
length, protecting it on the one hand from the the flames coming from the furnace 1
arranged at the side, and on the other hand distributing the furnace gases in the
flues 9, 9 and 10, whence they escape, after passing the damping contrivance 16
through the drying chamber 14 and the outlet channel 17, onto the chimney 19,
being regulated on the way by a slide 11 in the flue 9 and 10, by openings 13
in the flues 9 and 10, and by a principal slide 18 in the outlet channel 17 all
substantially as described and illustrated in the accompanying drawings.
.
1900
F. W. GOLBY,
36, 'Chancery Lane, London, W.C.