Passing Comments
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Welding Permits Big WRITING to the James F.
Savings in Steel Con" Lincoln Arc Welding struction Foundation, a well-known American consulting engineer refers to the remarkable economy of welding. On the average, is saved per ton of steel and, if welding were used in fabricating only 36,000,000 tons of steel, the saving would amount to over £250,000,000.
Ball Races Smaller A S clock makers, the Swiss Than a Common Pin 1-1 are renowned. It is not sur
Head prising, therefore, that from
this country should now emanate miniature ball bearings, which are manufactured bn a commercial scale. The smallest complete bearing is smaller than an ordinary pin head, being 1.5 mm. in overall diameter. A pin is larger than that. Measure one, and you will find it is nearly 2 mm. across the head: Their introduction
may have an important influence on automobile instrument making, for they are said to be more frictionless than ruby or sapphire bearings, to stand shocks better, and to require less lubrication. They are being handled in this country by International Technical Developments, Ltd., Thames House, London, S. W .1
Paris Shows Fewer 1VIANY people are inclined to Fatal Road Accidents "1 look upon road traffic in in 1936 . . Paris as being somewhat dan gerous and apparently only partially controlled, but in 1936 accidents in the built-up area were appreciably reduced, there being 435 of a fatal nature in Paris and its suburbs. The figures for the previous years were :-1935, 463; 1934, 41)8; 1930, 600; yet the use of road transport has grown remarkably. Possibly the improvement may be partially due to the fact that trams have been abolished. '
German Road PasTHE German Statistical senger Transport I Office recently published Developing Slowly. . figures concerning road passen ger transport. They cover the services operated by the Postal and Railway Administrations and private operators. In March, 1936, these involved a network of 78,800 kiloms., of which 45,800 were controlled by the Postal Authority, 32,300 by private operators and 700 by the railways; 75,900 represented inter-urban services and only 2,900 local services. The vehicles numbered 7,409 together with 196 trailers. The receipts for the first half of 1936 reached 108,000,000 R.M., but the passengers carried numbered only one-eighth of thor using the various railway and tramway systems. I T may surprise may to know that the power house at the Ford Works produced, during June, 9,500,000 units of electric energy, or about half that consumed by a town such as Southport in a year. To obtain this, the plant generated 165,000,000 lb. of steam from 80,000 tons of water, the heat being obtained from 1,643,000,000 cubic ft. of blast-furnace gas (considered a waste product in many plants), and more than 3,000 tons of coal. Steam at 1,250 lb. per sq. in. operates specially designed turbines, the only ones of their type in Europe. By using such high pressure, more work can be produced from the steam before it is used again at 200 lb. per sq. in. for other purposes. Figures Showing Energy Consumed in a Large Works. . .