Report on the Trials of Implements at Bedford. G87 



Opening of springs without load 

 Ditto with loatl 



Ditto limit .. 



Ball S: Son, 1307. 



Front 

 Springs. 



n 



Back. 



n 



ITayes & S'on, 1432. 



Front 

 Springs. 



on 

 ^1 



Back. 



4i 



waggon. Considering that on the front springs of No. 1307 

 there was 8 cwt. less Avcight, with an almost equal amount of 

 deflection, and looking at the large amount of deflection in the 

 hind springs of No. 1432, we come to the conclusion that the 

 springs in No. 1307 were much more flexible than in the other 

 waggon. In No. 1307 the hind wheels are of smaller diameter 

 than in No, 1432, and this will to some extent reduce the 

 counter advantage of a greater load on the hind wheels. The 

 inclination of the front wheels is 1^° in favour of No. 1432. 

 The mean draught per ton of gross load in No. 1307 is smaller 

 by 13 lbs. on the road, and 3 lbs. on the arable land, than in 

 No. 1432, which difference is apparently caused by the more 

 flexible springs in Ball and Son's waggon. 



It may now be possible to account for the many apparently 

 conflicting results in the mean draughts, as these differences 

 can only have been caused by better construction and work- 

 manship in the case of one waggon or cart than of the other, so 

 that the load is moved along more steadily and is less affected 

 by the resistances on the road. We may, for instance, compare 

 T. Milford and Son's waggon No. 4876 with W. Ball and Son's 

 No. 1308, both in Class XXII. 



Milford's waggon has a smaller proportion of weight on the 

 hind wheels, which are also smaller in diameter than in Ball and 



