An Improved Soldering Lamp or Burner.
Year: 1899

page_text: An Improved Soldering Lamp or Burner.
We, GUIDO PALAZZI, UĠO PALAZZI and VITTORIO PIVETTA, all of 35, Via Nuova,
Pellegrino, Naples, Metal Workers, 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 :-
The present invention relates to a selfacting melter and solderer, for the purpose
of employment in jeweller's works, in which invention the flame is sustained by a
jet of steam, in substitution of ordinary mouth blow-pipes or of blow-pipes worked
by bellows.
Fig. I of the annexed drawing gives a side-view of the apparatus. The gas issues
from the tube, which is joined at 6 to the conduit c, which at d is in communication
Near the two
with the upper conduit, which latter is also supported at e.
conduits c and fare provided with regulating valves gland g, having pointers h, and h₁,
which show on graduated dials or discs the degree of aperture of these valves."
The conduit f carries the burners, which serve to heat the water in the boiler m.
This boiler is provided on its upper part with an aperture n, provided with a screwed
cover for the introduction of the water, and with a safety valve o.
The boiler is further provided with a level cock p corresponding with the axis of
the boiler and in its lower part a discharging cock o¹.
At one end of the boiler is secured also the steam pipe which, in the interior of
This tube
the boiler, is bent upwards and extends in the upper part of the same.
is enclosed near its issue in a coupling box r, which receives the gas conduit c.
From to its ends the steam conduit is enclosed in the gas conducting tube and
both together are enclosed in a larger tube t. The apparatus stands on the legs u
and v and all its parts can be dismounted.
This set forth, the operation of the apparatus can easily be understood. After
having opened the level cock p and taken off the screwed cover, the water is poured
at n into the boiler to half its volume; (which is shown by the water flowing out at p)
the cock is then again shut up and the cover screwed, whereupon the boiler is ready
for its work.
For this purpose the valve g₂ is opened and the flames are lighted. When the
water is heated, the steam flows out at sand as soon as its strength is considered
sufficient, the apparatus is put near the melting pot and after having opened the
valve g₁ the flame is lighted. In order to eliminate any danger of explosion, the
steam conduit is made without a closure, but nevertheless a spring safety valve o
has been provided, by which the tension of aperture can be regulated. If after one
or two meltings there should not flow water through the opened cock o¹, then the
boiler must be filled up again.
This apparatus greatly facilitates the melting in as much as it renders unnecessary
the blowing of the bellows by a workman and that once in operation, works auto-
matically. It enables further a saving of 50% of the gas and a few minutes are
sufficient to melt from 100 to 200 gr. of gold or silver or other alloys used in this

page_text: Having now particularly described and ascertained the nature of our said invention
and in what manner the same is to be performed, we declare that what we
claim is
An apparatus for melting by means of gas, whose jet of flame is fed by a jet of
steam from a cylindrical horizontal boiler, provided with safety valves and level cocks
and means for discharging the water heated by means of gas flames derived from
the main conduit and in which the current of gas which feeds the flame and the
heating burners can be regulated by means of graduated indicating cocks.
Dated this 5th day of October 1899.
HUGHES, SON & Co.,
38, Chancery Lane, London, for the Applicants.