F - Mech Eng,Light,Heat,Weapons – 27 – D
Patent
F - Mech Eng,Light,Heat,Weapons
27
D
307/49
F27D 99/00 (2010.01) C03B 5/027 (2006.01) C03B 5/26 (2006.01) C03B 7/086 (2006.01)
Patent
CA 1168686
Abstract A melter needle position control mechanism and motorized incremental drive is disclosed for controlling the position of a needle relative to an orifice in a furnace. Conventional melter needle control mechanisms are cumbersome, inaccurate and do not facilitate servicing of the needle. The present mechanism has a support 36 for a fluid operated piston 49 which allows a boom or I-beam 76 to be rotatably mounted and to extend over the orifice 32 of a melter 10. A movable mount 144, providing a support for a needle 30, is vertically translated by a vertical adjustment shaft 184 that is driven by a miter gear 156. The gear 156 is coupled to a rotatable command shaft 164 which is controllably rotated by a motorized incremental drive 26. A rotary actuator 67 rotates the I-beam 76 and the needle 30 to a retracted position after the I-beam 76 is sufficiently moved vertically whereby the needle 30 may be serviced. Radial, lateral and initial vertical adjustments are possible with the present invention.
359734
Johns-Manville Corporation
Macrae & Co.
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