THE .
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COMMERCIAL MOTOR
Recognized in Business Circles as the Leading Journal.
The Authority on all forms of Mechanical Road Transport.
Largest Circulation.
Conducted by EDMUND DANGERFIELD.
WE give brief details in this issue of the latest model of a popular road sweeper, in connection with the design of which modern traffic conditions and present methods of highway construction have received special atten
tion. Page 047. *
OUR representative in the Press Gallery of the House of Commons, in his notes this week, deals with the replies of the Minister of Transport to various questions put to him, and to the third reading of the Vehicles
Lighting Bill. Page 645.
SOME idea of the arduous conditions under which motor vehicles operating in the diamond fields have to work is given in a short article appearing in this issue. Motor lorries are largely used for transporting barrels
of water to the diggers. Page 660.
WE sought and took advantage of an opportunity to test under full load and in ordinary working circumstances one of the new six-wheeled Steam wagons which made their appearance at the recent Commercial Motor Show. The outcome of the test is described in our
pages this week. Page 652.
THE new piston which is described in this issue has some original features, its skirt being divided into two and being only connected to the head by two stampings of a new steel which is said to be incapable of expansion under heat. It is claimed for the new piston
that it is free from slap. Page 647.
A. NEW method of making a high-speed steel in which the heat for melting the steel ingot is provided by a high-frequency electric current, with means for preventing the waste of such heat and in which the intrusion of gases and foreign matter is scrupulously
avoided, is described by us. Page 657.
A SECOND article upon the design of the Diesel engine by a prominent engineer follows one which in last week's issue dealt with the early history of the type. The difficulties that have confronted inventors in their' endeavour to secure accurate oil feed are
described in the present article. Page 649.
A SHORT series of articles on the practical employment of the steam wagon should be helpful to certain of our readers who have the Special type of Work for which they are fitted. In the first of these articles in this issue we survey this sphere of usefulness, and the question of costs will be dealt with in due
season. Page 658.
THE Ministry of Health has recently issued, as part of its annual report, a publication which gives interesting details of costing returns relating to refuse collection and disposal and street cleansing—operations in which motor vehicles and appliances play a big part. The statistics, which are analysed in this issue, refer
to 79 different county borough councils. Page 648.