Douglas Alan Hart

US Patent:

20040221777, Nov 11, 2004

Filed:

May 9, 2003

Appl. No.:

10/434565

Inventors:

Douglas Hart - South Windsor CT, US
Robert Lewis - Cromwell CT, US
Charles Maney - Longmeadow MA, US
Michael McCartney - Bloomfield CT, US
David O'Neill - Feeding Hills MA, US
Galen Richards - Torrington CT, US

Assignee:

ALSTOM (Switzerland) Ltd

International Classification:

F23M009/06

US Classification:

110/213000

Abstract:

A furnace () includes a series of lower compartments () extending in a vertical arrangement, with at least one of the lower compartments () having one or more fuel nozzles () which tangentially fires fuel into the combustion chamber at an offset from a diagonal (DD) passing through opposed corners of the combustion chamber. At least one of the lower compartments () has one or more air nozzles () which tangentially introduces air into the combustion chamber along an offset direction which is offset from the diagonal (DD) to the same side as the fuel firing offset direction. The tangentially fired air and the offset fired fuel create a swirling fireball (RB) in the combustion chamber. At least one overfire compartment () has at least one air nozzle () for injecting air in opposition to the swirling fireball (RB), along an opposition offset direction which is offset to the other side of the diagonal (DD), in a manner such that the injected air promotes the evolution of the swirling fireball (RB) into an upward flow.

US Patent:

43721079, Feb 8, 1983

Filed:

Dec 17, 1980

Appl. No.:

6/217570

Inventors:

Douglas G. Hart - Greenville SC

Assignee:

High-Speed Spinning, Inc. - Greenville SC

International Classification:

D01H 792
D02G 104

US Classification:

57346

Abstract:

An apparatus for inserting a false twist in roving or yarn as the strand or strands of fibers are fed from between a pair of front rolls to a takeup device. The apparatus includes a rotor rotatably carried in an enclosing casing. A plurality of circumferentially spaced air entrapping members is provided in the perimeter of the rotor so that upon applying pressurized air to the members, the rotor is driven. A yarn conveying tube extends axially through the rotor and is fixed thereto for being rotated therewith. A portion of the yarn conveying tube is radially disposed from the rotational axis of the rotor so that as the yarn flows through the rotating tube, a false twist is inserted in the yarn from the tube up to the nip of the front rolls.