. American engineer and railroad journal . KEY SLOT FOR 5X7SHANK. KEY SLOT rOR 5X 5- SHANK. rE INFORCEMENT FOR KEY SLOT. SX5/{NV 5yy SH/^NK,AUTOMATIC COUPLER. SHEET A. •i ■ tJ -/I - hf-. .1^ — -•

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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering