Improvements in Apparatus to be Applied in the Smelting of Cast-iron Borings, Turnings, and Shavings.
Year: 1889

page_text: COMPLETE SPECIFICATION.
Improvements in Apparatus to be Applied in the Smelting of Cast-iron
Borings, Turnings, and Shavings.
I, JENS HANSEN of the City of Elsinore in the Kingdom of Denmark, Iron
founder, 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 :-
My invention relates to an improved apparatus for introducing cast iron borings
turnings, shavings and the like into smelting furnaces, while in operation, and the
manner, in which I prefer to carry my invention into effect is shewn in the
accompanying drawing, which is a longitudinal section through the entire apparatus as
fixed in the wall S, of a furnace.
The apparatus according to my invention consists in a cylindrical box or casing A,
provided with a hopper A" and supported by a pedestal A' which is in its turn
supported or steadied by one or more props R, having the furnace wall S for their
support. The said box pedestal and hopper are generally cast all in one piece or
otherwise substantially connected with each other.
In the box A is placed a feeding worm B, firmly fixed on a tube D, which serves as its
axle and which has its bearing in the socket E, which is firmly attached to the
pedestal. The outer end of the said tube D is connected with a fixed, bent tube Fin
such a manner,
that the former can rotate independently of the latter. The tube F
leads to and issues in an air chamber G, built into the wall S of the furnace.
The tube D, and with that the feeding worm B may be rotated by means of a pair
of cog-wheels H and I, geared into each other and actuated by means of a crank or
the like, turning the shaft K, on which the cog-wheel I is fixed.
The shavings, turnings, borings and the like are placed in the hopper A" and
carried by the feed-worm B through the chamber C into the smelting compartment a
of the furnace.
A powerful air current is at the same time led through the tube M into the air-
chamber G, which latter is cylindrical so that it entirely surrounds the end of box A,
which is in that way kept cool and protected from the heat, arising from the furnace
and furnace wall. From the air-chamber Ga current of air passes through the tube F,
whence it passes into the tube D discharging in the compartment C and out into the
furnace a.
The object of the air-circulation is a double one, namely to keep the box A cool and
to overcome the counter-blast from the furnace itself so that the shavings etcetera can
be introduced unhindered.
(is a flue passing from the air-chamber to the smelting department of the furnace.
Having now particularly described and ascertained the nature of my said Inven-
ion, and in what manner the same is to be performed, I declare that what I
laim is :-
1. An apparatus for the introduction of cast-iron shavings, borings, turnings and
he like into furnaces consisting essentially of a feed-worm B acting in conjunction
ith air currents for the purposes of overcoming the counter blast from the furnaces
nd of cooling the feed worm substantially in the manner as described and as shewn in
e drawing.
2. The method of using the spindle of the feed-worm as air conductor substantially
the manner as and for the purpose described and as shewn in the drawing.

page_text: 3 The arrangement consisting in surrounding that end of the worm-box which is
nearest to or embedded in the furnace-wall with an air-chamber built into the wall of
the furnace substantially in the manner as and for the purpose described and as shewn
in the drawing..
London, September 4th 1889.
JENS HANSEN..
Per C. R. Bonne & Co.,
41, Eastcheap, E.C., Registered Patent Agents.