Lloyd E Postlethwait

US Patent:

H23, Feb 4, 1986

Filed:

Nov 7, 1984

Appl. No.:

6/669129

Inventors:

John B. Riester - Morgantown WV
David M. Miller - Metz WV
Lloyd E. Postlethwait - Fairmont WV

International Classification:

B05B 120
E21C 3520

US Classification:

239165

Abstract:

An improved dust control apparatus for a shearing machine which has attached thereto a spray bar apparatus mounted to and extended from said shearing machine and containing a curtain for dust control and a plurality of spray heads along said spray bar, an improvement in the spray bar apparatus is provided by mounting an extendable spray bar to said spray bar with a hydraulic cylinder attached to said extendable spray bar so that it can be extended or retracted as said shearing machine reaches the end of its cut so that said extendable portion is not damaged when the shearing machine reaches the end of its cut. The extendable portion includes spray heads and a curtain for dust control purposes.