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Welded Light Alloy Withstands Hard Service
Page 107
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DOUBTS that may have existed as to the ability of a welded light-alloy body to withstand the rigours of heavy tipping service, are dispelled by the experience of the North Thames Gas Board. They have had a Bedford chassis with Anthony Hoist Argonare-welded light-alloy body in use for the past 12 months and it is stated by the Northern Aluminium Co., Ltd., who prepared the design and supplied the metal, to be performing remarkably well.
Before its use by the Gas Board it was employed for six months in the haulage of sand and ballast for a sitelevelling contract. Following this experimental period the experience gained enabled a few detail improvements to be made, particularly to the rear corner-post mountings.
Service with the Gas Board, on which coke and breeze are carried, has proved an exacting test for the corrosionresisting properties of the Noral extruded sections and the light-alloy
This Bedford with Anthony Hoist body made from Noral light alloys has been used by the North Thames Gas Board for a year on heavy work without noteworthy trouble.
plating, both of which in excellent condition. have remained All the welded joints have been carefully checked and only two cases of joint failure have been found. These had occurred at points where large stresses were imposed when the body was tipped on uneven ground. In the most severe of these failures there was obvious evidence of imperfect welding of the joint.
The sides and ends of the body are of 10-gauge plate stiffened with 3-in. by 2-in, by channel sections. Similar channel sections are used for the crossbearers, which are connected at their ends by side raves of 4-in. by 24-in. by :-in. angle-section material.
The corner posts at both front and rear are of 3-in. by 3-in, by angle; being carried below floor level, where they are gusseted to the side raves and to the front and rear cross-bearers. Such fittings as the tailgate hinges and fastenings were machined from the solid.
This light-alloy tipper, believed to be the first in this country to have an all-welded body, is a good example of the excellent results that can be achieved in aluminium • welding by employing modern technique.