Tar melting kettle

Details Tar melting kettle Tar melting kettle

1975-11-26

1977-07-05

Camby, John J.

Stoves and furnaces

Melting furnaces

214 17B, E01C 1945

Patent

active

040333280

ABSTRACT:
This invention relates to kettles used for the melting of tar and/or asphalt. The kettle is normally mounted on a base frame having an axle and tires for towing behind a truck, but the kettle may be stationary or semi-permanent. The flames and hot gases from a gas burner flow through tubes in the kettle to melt blocks of tar. The melted tar is then pumped by a motor driven pump from the kettle to the surface where it is being used. To add blocks of tar to the kettle for melting, a double rotating cylinder is used so that the melting tar is not exposed to atmosphere. When the cover is raised so that a first opening in an outer cylinder is exposed to atmosphere, a block of tar is inserted. The inner cylinder has an opening in line with the first opening of the outer cylinder. Thereafter upon closing the cover and rotating the inner cylinder, the block of tar falls from the inner cylinder through a second opening in the outer cylinder into the kettle. The second opening for the outer cylinder is always closed to atmosphere thereby keeping the contents of the kettle from being exposed to atmosphere. A special filter prevents particles contained in fumes inside the kettle from reaching the atmosphere through a vent for the kettle.

REFERENCES:
patent: 1429711 (1922-09-01), Brown
patent: 2227749 (1941-01-01), Gooder
patent: 2230076 (1941-01-01), Etnyre
patent: 2830577 (1958-04-01), Walter, Jr.
patent: 2841071 (1958-07-01), Strawsine
patent: 3046717 (1962-07-01), Northrup et al.
patent: 3732075 (1973-05-01), Acaba
patent: 3804079 (1974-04-01), Schrader
patent: 3894926 (1975-07-01), Lee

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