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Aviation History
1939
1939 - 0716.PDF
40 FLIGHT. ADVERTISEMENTS. MARCH 9, 1939. •y^mHi"0^ THE BLACK & DECKER HOLGUN A Three-jawgeared chuck with chuck key. B Deep-groove ball bearing on chuck spindle absorbs thrust in all directions. C Heat-treated spindle of high-grade alloy steel, with splined gear mounting, minimises friction. D Needle roller bearings at back end of spindle. E Full-size armature pinion ensures smooth, noiseless operation. F Sturdy intermediate gear, with ball bearings mounted inside the gear. G Generous size, double grease sealed ball bearing on armature shaft. H Ample air outlet slots. I Full-size steel fan mounted on arma ture shaft. J Powerful Universal motor. K Instant release trigger switch control. L Switch locking pin for optional use. M Two-pole automatic release switch. N Three screened air inlets, any two of which provide ample ventilation. O Brush holders and springs are mounted on a moulded bakelite brush ring which is locked in place by the switch handle. Simplicity of assembly gives easy access to any part for inspection and servicing. Drilling capacity \" in steel—no-load speed 1,700 R.P.M. (optional speeds)—overall length 6f"—nett weight 2f lbs.— spindle offset f. With special attachments, spindle offset can be reduced to ft" for awkward drilling jobs. This sturdy though light-weight tool was designed only after exhaustive experiments to meet present-day high-speed production methods. Black & Decker Drills are extensively used in the production of Bristol Aircraft. V*^ Dept. F5, SLOUGH, B BRANCH SERVICE STATION, 6» STAFFORD STREET, BIRMINGHAM. Dept BUCKS 'Phone: Slough 21221. 'Grams: "Blackdeck, Slough" and at Toronto, Canada, and Sydney, Australia. D.A.66 - ••• : •• •.: • - RflF i uniFORms «*ipi!E==» On the Approved Lists for Short Service Commissions, R.A.F. Volun teer Reserve, A.A.F., Medical and Dental Branches. Please write for illustrated Price List: prices are under the grant in every case. HERBERT (tiAPPELL TAILORS & OUTFITTERS TO THE ROYAL AIR FORCE 58 Conduit St., W.I 50 Gresham St., E.C.2 Mayfair 2242 Metropolitan 6837 To ensure accuracy in chemical and physical qualities to AID.and B.S.S. Specifications, uSe alloy Steels melted by the Electric process. ANDERSON SHEFFIELD [ROTHERS 6- t LIMITED IEWBOULD I ENGLAND STEEL MAKERS FOR 160 YEARS
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