The Supply Department.
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Furnaces for Small castings.
We have, from time to time, reproduced photographs of interesting and practical types of furnaces made by Fletcher, Russell and Co., Ltd., of Warrington, and two more are given on this page. One of these shows a twin furnace for the melting of small quantities of metal such a 8 aluminium, gun-metal, iron, etc. It is gasfired, and it should be provided with an air blast. Different kinds of metals may be used in the two crucibles, or, if only one class of metal is required, a fairly-continuous supply of molten material may be drawn from the furnace. It is a veryeconomical furnace to work, and further, if by any chance the metal should overflow from one of the pots or a crucible should break, it is trapped in the bottom of the casing, and may he extracted by the withdrawing of the three bars. These bars are shown under each of the crucibles. The other illustration shows a form of air-blast continuous-melting furnace for aluminium. Both these furnaces are useful types for installation in works where small quantities of castings are required at short notice.
Fletcher Russell's catalogue of gas-fired and oil-fired furnaces, brazing hearths, etc., for the motor trade is a aluminium. For melting
very-comprehensive one, and contains numerous illustrations, particulars, and information of great value to engineers; it should find a place in every works office.
Railway Inspection Cars.
Railway inspection cars are attracting a gill deal of attention at the present time, and in that connection it should be noted -that Messrs. Charles Price and Son, of Broadheath, near Manchester, are giving particular attention to their production. The inspection ears which are made by Messrs. Price and Son vary from a twoseated vehicle with a single-cylinder engine of n h.p. up to machines capable of taking from 14 to 20 passengers and a quantity of luggage. The larger sizes of car are fitted with four-cylinder engines of 48 h.p.; they are capable of being driven 500 miles on one supply of fuel. and of attaining speeds up to 50 miles an hour. This firm has made many practical applications of the internalcombustion engine for business purposes.