650 Report on the Trials of Implements at Taunton. 
Fig. 20. — Plan of Messrs. Burgess and Key's Two-horse Moicing 
Machine, No. 2824, showing the position of the Knife-har. 
The driving-wheel works on an eccentric bush, which, on being turned 
round on its own pivot, moves the driving-wheel off from the -wheel it gears 
into, and so admits of the introduction of three pinions of different sizes, by 
which three different speeds can be obtained. 
I also add an illustration of their arrangement for taking out the knife by- 
giving plans of the cutter-bar, -n'ith and without the knife, of the knife, and 
of the fastener. 
Fig. 21. — Illustrating the Arrangement for taking out and fastening (he 
Knife in Messrs. Burgess and Key's Mowing Machine, No. 2824. 
A. Cutter-bar with knife and fastener complete, B. Knife disconnected. 
C. Cutter-bar without knife. D. Patent Fastener. 
I cannot avoid drawing attention to the increased danger to the driver 
in proportion as the cutter-bar is brought farther back. Obstacles in practice 
will occur, giving the machine a sudden stop; horses will take fright and 
gallop away with machines, and pitch the driver forward ; and the farther 
back the kuifc is, the more danger there appears to be. 
Harrison and J\PGrcgm-'s Two-horse Mower, No. 741. — The figures" illus- 
trating tliis mashine, which is called the Albion Wower, consist of a plan and 
