The Purchase Department.
Page 19
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Where to Buy your Supplies.
Interesting and New Supplies from Factory and Showroom.
The strength of Steel Drums.
As a proof of the remarkable strength of its welded steel drums, the Steel Barrel Co., Ltd., of Uxbridge, has sent us a photograph, of which we reproduce an illustration herewith. Both the views shown are of six-gallon drums of equal strength, which have all
[The left-hand drum was tested to 100 lb., hydraulic.
joints welded. The one on the left, however, has been tested by hydraulic pressure to the bursting point, and it will be seen how well it has stood up to the strain : 90 lb. per sq. in. was registered before any leakage took place, and this pressure was increased to 100 lb. per sq. in. before one of the joints was torn open slightly. The material used in the manufacture of these. barrels is sheet steel, gauge No. 20 G.B., equal to .0392 of an in. or .998 mm. The length overall is 18 in., whilst the diameter is 12 in. The total weight of the drums is 11 lb. We are informed that. the price of these improved barrels is very little over that of the ordinary soldered export drum.
Note and Pocket Books, John Walker and Co.. Ltd., Farringdon House, Warwick Lane, E.C., sends us a selection of its wellknown diaries for 1913. There are few busy men who can claim to memorize appointments and arrangements for any considerable period ahead, without the assistance of a note-book. The Walker productions are intended to suit the requirements of the man who makes a note of every happening of importance, equally with the good-memory businessman, who only requires a little mental jogging on occasions.
The style of the books, both covers and fittings, leaves nothing to be desired. The importance of detail has been fully grasped, and the marking and spacing of the pages is clean and convenient. Spaces are provided for stamps, season-tickets, and other impedimenta. The renewable loose-leaf book, which opens flat, and which need never become bulky if the used pages are removed when written up, is a great favourite. If these pages be filed after removal, a valuable and concise record of a year's work is obtained. Suitable Glass Manufactures.
Pilkington Bras., Ltd., the famous glass company of St. Helens, Lancashire, draws our attention to the fact that it is making a large variety of glasses for different purposes connected with the commercialvehicle industry. The maker's polished wired-glass for S6nd-screens and taxicab windows is, of course, well-known. Our readers, however, may not be aware that the company is prepared at all times to produce any special glass manufacture to customer's individual specifications. For lighting purposes in offices and workshops, a large range of plate and ordinary glass is produced. Very often, much money could be saved by many manufacturers, if suitable glass were used for glazing purposes, to reduce charges for costly artificial light.
Soft Metals in Chassis Construction.
There are still many designerswho maintain that aluminium is unsuited for use on heavy chassis, and many attempts have been made, from time to time, to produce alloys which will overcome the defects of aluminium whilst retaining the advantages of this metal. After long research work, and considerable commercial experience, National Alloys, Ltd., has produced at a commercial price, a metal which it calls
Ivanium," and this is being used in large quantities for the above-mentioned purposes. The metal is -2i. per cent. heavier than pure aluminium, and it possesses many desirable advantages. Its tensile strength (cast) is 11.1 tons per sq. in. ; it casts cleanly and easily ; it. is non-magnetic, tough and non-porous, and it can be easily filed and machined. A neat booklet, which will be forwarded on application to the company's offices, has been issued, and this treats concisely of metals and alloys.