US1462446A - Tipping crucible for basalt furnaces - Google Patents

Description

Patented duly l?, i923.V

narra stares PAUL DH, OF PARIS, FRANCE.

TIPPING CRUCIBLE FOR BASALT FURNACES.

Application filed January 26, 1922. Serial No. 531,923.

To @ZZ w wm. t may con cem Be it known that I, PAUL DH, a citizen of the 'Republic of F rance,and residing at Paris, Seine Department, No. 12a Rue de Provence, in the Republic of France, engineer, have invented certain new and useful Tipping Crucibles for Basalt Furnaces, of which the following is a specification.

This invention relates to a tipping crucible adapted for use with furnaces for the fusion -of basalt, By reason of the rapidity with which basalt in fusion becomes thickened and solidified when it is spread out in a thin layer, it becomes necessary to carry out the filling of the moulds in a rapid manner and as far as possible by a single movement. The crucible according to this invention will accomplish this purpose even when the furnace will only permit the melted basalt to How out at a slow rate. F or this purpose the said crucible is so disposed as to continually receive the basalt which is delivered from the tap hole of the furnace into a basin closed by a vault and heated in the inte-rior by burners disposed in the walls and supplied with fuel gas. The said crucible is mounted on a horizontal axle in such manner as to be suitably overturned and to pour out the desired portion of the melted contents into the ingot moulds or like moulds by a rapid operation.

The accompanying drawings show by way of example a form of construction of a tip-` ping crucible according to this invention, wherein:

Fig. l is a vertical section of the same, 'and Fig. 2 a horizontal section on the line A-A Fig. l.

l indicates the wall of the furnace and 2 a tap hole provided in an upper part eX- tending above t-he said crucible. The latter is supported upon a stationary axle 3; the upper part thereof 4 and the adjacent portion of the furnace have the form of portions of surfaces of revolution concentric with the aXle 3 whereby the said crucible is enabled to swing about but without per- Init-ting any admission of air through the tap hole 2. Within the crucible is formed a. circular basin having above the saine a vault constituting a reverberatory portion; the basalt is fed into the same through a funnel-shaped opening 5 which is of sufficient size to maintain a constant communication with the tap hole 2 in spite of the swinging movement of the crucible, and the basalt will flow out through a'lateral tap hole 6 when the crucible is tipped to alsufficient degree. yOpposite the tap holey 6 is provided a sight hole 7 whichmay if necessaryl be closed by a plug. l

In the walls of the crucible are provided a plurality of passages 8 and 9 which are in alternate disposition around the circumference of the basin; the passages 8 are used to receive the burners having gas or a fuel mixture supplied thereto by means of flexible piping, the passage 9 being used for the secondary air supply. All of the said passages open in a substantially tangential position with reference to the wall of the basin in order to give rise to a. whirling motion providing for the perfect combustion of the gas and the uniform heating of all parts of the crucible.

The products of combustion are discharged through the apertures 5 and 2 and are thence evacuated into the furnace whence they are drawn up by the chimney. They will aid in heating the walls of the tap hole 2 thereby obviating all clogging of the latter.

The portions of the crucible which are eX- posed to contact with the basalt or the flames are constructed of refractory Inaterial in one or two interchangeable parts. The remainder may be constituted by a suitable non-conducting substance maintained within a metal casing 10 which is secured in any suitable manner to a supporting frame 11 connected with the axle 3. To handle the crucible in a suitable manner, the weight of the same together with the contents may be balanced by counterweights, springs or like means. and the operating devices can be controlled by a hand lever or crank and may comprise if necessary suitable gearing including worm gearing or the like.

Claims:

1. A crucible for receiving basalt when discharged from a melting furnace and for pouring the same into ingot or like moulds. comprising a stationary horizontal axle whereupon the crucible may be given a swinging movement. a basin formed within the crucible, a vault constituting a reverberatory dome situated above the said basin, a plurality of burners disposed at the per`15jv p of portions of surfaces of revolution 'concentric with the ,said pivotation axle,

riphery and opening into the said basin, the Sad burners.. being Substantially tangent to the, circumference of the basin.l

2.` A 4Crucible for receiving basalt when discharged from a melting furnace and for pouring the same into ingot-,or like moulds, comprising a stationary horizontal axle whereupon the said Crucible is mounted in such manner as to provide for the swinging movement thereof for the rapid pouring of v.thecontents, the Crucible being situated under'lja `pn'tion of 'the furnace in corbel disposition having the tap hole formed therein,

the adjacent surfaces ofthe said corbel portion and the top. ofthe crucible having the 3. Crucible `for'K'receiving*basalt when discharged from melting furnace and for pouring the same into ingot or like moulds, comprising a stationary horizontal axle whereupon the said Crucible is mounted in such manner as to provide for the rapid pouring ,of the contents, the Crucible being situated under a portion of the furnace in corbel disposition having the tap hole y formed therein, a yfunnel-shaped aperture ybeing formed in the top of the Crucible in such manner as `to maintain constant com inunication with the tap hole of the vfurnace during the swinging movements of the crucible. y

In testimony thatI claim the foregoing as my invention, I have signed my name.

PAUL DH.

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