672 Rejwrt on the Trials of Implements at Bedford. 



No. 738. Wm. Smith, of Kettering. — In this implement, knives are attached 

 to the projecting arms of a wheel, which revolves on the top of the rows at an 

 angle of about 30° to them, and may be described as a slow-screw motion. 

 The tap roots of the plants were cut, and the motion was so regular, that many 

 of the plants were left in their original position. The work done was fair and 



Fig. 14. — Frame and Gearing of 

 Small's Turnip-thinner, No. 735. 



Fig. 15.— Wheel and Blade 

 of Smith's Turnip-thinner, 

 No. 735. 



regular ; the plants were not injured ; the draught of the machine was light, 

 and its construction simple, although it involved a mechanical error, namely, 

 in communicating the power from the axle of the driving wheels by means 

 of a bevel gearing, an ordinary cog-wheel is made to gear with a bevel 

 wheel, instead of having two bevel wheels. A set of hoes of various sizes is 

 sent out along with the implement, by means of which various widths may 



