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Aviation History
1915
1915 - 0924.PDF
SUPPLEMENT TO \f\ML absorbing device registered lubber screw, which is also shown in magnified image. The lighting for night work is provided for by an electric lamp in the hood. The other in- The Lodge Sparking Plug Co., Ltd., WRENTHAM STREET, BIRMINGHAM. HAVING made a name for their sparking plugs for automobiles, it is not surprising An observer's compass for wearing on wrist or knee, and the standard airship compass made by Kelvin, Bottomley, and Baird, Ltd. strument illustrated is an observer's compass, which is worn on the wrist or knee, and is illuminated by a small electric bulb embodied in the compass case, the battery being of the pocket type. The standard aeroplane com pass has a hood with sliding doors, and a course indicator mounted on the rim of case inside. The case, hood, and mounts are made of brass finished dull, and provision is made for lighting the compass by means of a dry cell mounted outside the compass case. Kroll and Co., BAYHAM PLACE, CAMDEN TOWN, LONDON, N.W. MESSRS. KROLL AND CO., who are well known in the automobile world in connection with sheet metal work, have recently opened out in the production of metal fittings and rarts for aircraft. With their previous extensive experience in metal work behind them, they have been able to build up a position to undertake all kinds of metal work for aircraft, ensuring large and speedy production with the greatest possible degree of accuracy. Lang Propeller, Ltd., WEYBRIDGE, SURREY. MAKERS of the well-known Lang pro pellers that have been used with such great success by a number of leading aviators during the last three years, this firm has a large stock of Lang propellers, which are invariably of the very best workmanship and well designed. Special types for experi mental machines can be delivered at a few d iys' notice, and they are at all times willing to lend their aid to builders in finding a suitable propeller for a new machine. that the Lodge Sparking Plug Co., Ltd., have been equally successful with sparking A Lodge sparking plug engines. for aero plugs for aero engines. Although under certain circumstances the ordinary sparking NOVEMBER 19, 1915. to be produced. One of such that has been manufactured by the Lodge Co. [has with stood most trying and exacting tests work ing under long continuous full load conditions. The insulation is of mica, and the body of the plug has large cooling fins formed on it. W. Lester, 10, HAM YARD, SHAFTES BURY AVENUE, W.C. CAN give quick delivery of all fittings, undertakes metal press work, metal stamp ing, metal jig sawing, and can furnish blanks of any size and thickness. The London Label Co., Ltd., BECTON ROAD, PLAISTOW, LONDON, E. AMONGST the various specialities, applic able to aircraft, manufactured by the above firm, some of which are illustrated by the accompanying sketches, are all kinds of labels for instrument boards, dials for com passes, transparent wind shields and map- covers, and goggles. The latter are strongly made of best red rubber, and are reinforced in all the places where breakage is likely to occur. The eye-pieces are made of Non- Flam transparent celluloid, which are not only fire proof but are unaffee'ed by oil and petrol. It is claimed that they will not crack or splinter, and will always retain their transparency. The wind shield, illustrated, is made of the same material, and is cut exactly to R.A.F. specifications for B.E. 2c machines. The map covers are also of Non- Flam celluloid, 1 mm. thick, having lines, in red, accurately cut into the material form ing 1 in. square. The name and address plates, title and instruction labels for the various instruments on the dash boards can be made in metal, ivorine, celluloid, bonile, &c. Mappin and Webb, Ltd., REGENT STREET, W. THIS well-known firm of silversmiths have by no means neglected the aviator, for amongst their comprehensive range ot watches, clocks, &c, will be found several that will meet their requirements. One of these, a wrist watch, is shown in the accom- A wrist watch with luminous figures, a speciality of Messrs. Mappin and Webb. plug may be used for aero engines, there are conditions under which the ordinary plug cannot hold out, and so a special pattern has panying illustration. This watch has a solid silver case with screw bezel. The dial is black with bold, luminous figures, enabling The goggles, windshield, and instrument labels are mads from Non - flam, sheets by the London Label Co. 16
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