148 [supplement PAGE VIII.] THE COLLIERY GUARDIAN. July 19, 1918. HIGH SPEED STEEL A. W. HIGH SPEED” “A . W. PREMIER” FOR TURNING, DRILLING PLANING AND TSADE MILLING AT HIGH SPEEDS. FOR CUTTING ALL METALS AT HIGHEST SPEEDS & LONG ENDURANCE. ALL CLASSES OF CARBON TOOL STEELS, TWIST DRILLS, MILLING CUTTERS, BROACHES AND HOBS. ALL CLASSES OF HAND SCREWING APPARATUS, (Stocks,Dies.Taps, Chasers,etc) GAUGES, MEASURING MACHINES. ...... ■■... — ............................ ....■ ■ ■ ■■ .......... 1 111 ‘ ■ ■""lr -_______________________________________________________________ ■ - ■ _ ____- TELEPHONE:-6480, CENTRALfsiXLINES) ------- - TELEGRAMS’.-WHITWORTH.OPENSHAW. SIR WG. ARMSTRONG.WHITWORTH&Co.Ltd - OPENSHAW MANCHESTER 5ELF=LUBRICATING STEAM ENGINES Simple, Compound & Triple Expansion Types FOR COLLIERIES, MINES, VENTILATING FANS, PUMPS, & ALL POWER & LIGHTING PURPOSES The Beiliss Engine, with its automatic Forced Lub- rication and Absence of Wear, is specially adapted for operating Mine Ven- tilating Fans, and can be depended upon to run con- tinuously day and night for many months without the necessity of stopping for adjustment. It is not un- usual for these engines to run for one, two or even three years without ad- justment. - ■ - ’■ -1 •■’.J Non-Stop Runs of 7, 9, and 14 months have been recorded. Being vertical and self-contained, the Engines are not affected by settlement of foundation. The working parts being enclosed in a dust-proof case are not liable to be affected by the dust which is often largely in evidence at a Colliery. Write for our ‘‘ R ” Pamphlet, giving further points of ad- vantage. Beiliss Triple Expansion Engine, coupled to “Sirocco” Fan. 154 in. dia. Capacity 600,000 c.f. Air per min. Speed 170/200 r.p.m. BELLISS & MORCOM LIMITED, Telegrams : nip RJ f KJp II A IVT London Office : “BELLISS, BIRMINGHAM.” >8, VICTORIA STREET, S.W. 1.