Miscellaneous Implements Exhibited at Norwich, 1911. 263 



by Messrs. Willans & Rolnnson, Ltd., Victoria Works, Rugliy. 

 This is a most interesting exhibit, and is another instance of 

 the tendency on the part of some of our best designers to 

 develop the 2-stroke engine and the Diesel system. The 

 special feature of the engine consists in the employment of a 

 cylinder, which is really a sliding sleeve, inside a fixed cylinder, 

 which may be looked upon as a guide ; the sleeve is moved up 

 and down by means of eccentrics formed on the crank webs. 

 The rings of ports are cut in the sliding cylinder, those in the 

 upper part communicating with the exhaust port, and those in 

 the lower part connecting with a reservoir, in which air at a 

 pressure of about 3 lb. per square inch is stored. These latter 

 open slightly later than the former, so that after the pressure 

 on the cylinder has fallen to that of the atmosphere, the air in 

 the reservoir sweeps freely through the cylinder, effectually 

 removing the spent charge, and as the sleeve ascends, first the 

 exhaust ports, then the scavenge ports are closed, after which 

 compression takes place. By the use of the sleeve very ample 

 port areas for the exhaust gases and scavenge air are obtained, 

 and as the stroke of the sleeve is half that of the piston, the 

 velocity of the rubbing surfaces is halved. The ample area of 

 the scavenge and exhaust ports enables the engine to be run 

 at a high speed. As in a standard 4-stroke Diesel engine, air 

 is compressed to 450 to 500 lb. per square inch, at which 

 pressure the temperature is high enough to ignite the oil 

 without initial heating of the cylinder, and the commencement 

 and rate of injection is so regulated that the pressure does not 

 rise appreciably beyond the compression pressure. There are 

 so rnany interesting points connected with this engine that 

 doubtless its performance will be closely watched by all 

 interested in oil engine design. 



Exhibit No. 1057. — Seed Dressing Machine, for dressing 

 seed with liquid dressing ; for hand power. — Exhibited by 

 Messrs. E. R. & F. Turner, Ltd., St. Peter's and Grey Friars 

 Works, Ipswich. This machine consists of four mixing cham- 

 bers fitted with screw conveyors, and has the necessary taps, 

 &c., to regulate the supply of the liquid. The arrangement is 

 such that practically every seed is brought into contact with 

 the liquid dressing. The machine is capable of doing one 

 bushel per minute, and is easily driven by hand. 



Exhibits Nos. 1294, 1295, 1296.— Exhibited by the Daimler 

 Co., Coventry. 



This was the first time for the Daimler to show at the 

 " Royal," and the exhibit was an imposing and interesting one. 

 There were two petrol tractors of different design, and one of 

 the well-known Renard Road Trains. One tractor. No. 1294, 

 was fitted with a 6-cylinder Daimler engine, 4*88 bore by 5"11 



