US2798714A - Continuous mining apparatus of the pivoted boom type - Google Patents

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July 9, 1957 2,798,714

CONTINUOUS. MINING APPARATUS OF THE PIYOTED BOOM TYPE Filed July 5, 1949 J. D. RUSSELL 32 Sheets-Sheet l m3 f Z am d M 0% w m Q l o {@wk l Nm` wm K M am m y Nm w, \W 5% m Sm E 5. M5 b\\ .m\ C N Q 0 o 0 D 0 D O 0 0 O O 0 0 D 4 4 Q www v mmmmw f J Qn `|f.hw law ....3\ w e W, 5N mm NJN QQNN @QV am bur@ a, l l lll- QNln ooooo. l @E O \J o u W l' J s o Il ,wx R o 8N r. I m .NWL Q m am E July 9, 1957 J. D.. RUSSELL 2,798,714 CONTINUOUS MINING APPARATUS oN THE PIVOTED BOOM TYPE Filed July 5, 1949 s2 sheets-sheet 2 l JulyY 9, 1957 l .1. D.- Russi-:LL

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