Miseellaneoxis Implements EivIiibUed at Doncaster, 1912. 205 



forced through a pile of wood and sawdust, but is made much 

 longer and kept continuously full, there being no chance of 

 weakening the gas by drawing in air while filling up with fuel. 

 The gas is drawn off by two pipes instead of one ; these have 

 movable scrapers nearly fitting the inside of the pipe, so that 

 while one is being used to scrape the pipe free from dust and 

 tar the gas flows down the other. These pipes deliver into the 

 usual water scrubber which opens at the bottom into a water- 

 sealed hopper with a large mouth to enable a shovel to enter in 

 order to remove dust and ash. The gas is afterwards passed 

 through a centrifugal tar extractor, driven in this case by an 

 electric motor ; in practice, no doubt, it would be driven by the 

 engine direct. It is interesting to note that no water is required 

 under the grate, the moisture in the wood and sawdust being 

 sufficient. 



The tendency of governing suction gas engines seems to be 

 towards the use of the throttle instead of the " hit and miss " 

 arrangement, as being more calculated to keep the fire nicely 

 burning so that a sudden demand for gas may more readily be 

 met by the producer. 



At Stand 38G, the Associated Portland Cement Co. have an 

 attractive exhibit showing the use of concrete as adapted to 

 farm and estate use. This Company's stand was very fully 

 noticed in last year's report, but new uses of concrete are 

 continually being found. The writer now makes his cottage 

 windows, two muUions and three lights, the centre one to open, 

 cast in one piece with sill and head. The glass is set in a 

 rebate formed in the casement without any other frame, and 

 the casement which opens is itself made of cement, the hinges 

 being cast in place, so that there is no fitting, no painting, and 

 no w^oodwork to rot ; the whole being cheaper than when 

 made of oak. 



I have to thank my fellow judge, Mr. J. B. Ellis ; the 

 Stewards of Implements, Mr. F. S. W. Cornwallis and the 

 Hon. J. E. Cross ; and the Society's engineer, Mr, F. S. 

 Courtney, for the great help given by them in getting through 

 the business of the judging of the new implements. 



Harry W. Buddicom. 



Penbedw, 

 Mold. 



