382 JRejwrt on the Exhibition of Implements 
length of crank required has evidently governed the adoption by 
the inventors of a shallow feed or mouth ; and this can only be 
deepened by an elongation of the crank. Its performance, there- 
fore, is limited to the production of a quantity equal to that ob- 
tained from a two-knife chaff-cutter ; probably less for equal power. 
Turnip Cutters. — A premium of 51. was very properly awarded 
by the judges to Mr. James Gardiner, of Banbury, for his univer- 
sally-esteemed implement, of which so many thousands are in use. 
It may be truly said that this turnip-cutter, notwithstanding the 
many varieties introduced since its invention, is yet recognized to 
be the most simple, durable, and effective of its class. 
Cake- Crushers. — An award of 5/. was adjudged to Mr. Richard 
Hornsby, of Grantham, for a cake-crusher, which is re])orted to 
have " proved itself on trial superior to any other in the exhibition, 
and the workmanship to be very good, its superiority arising from 
the form of tooth adopted by the maker." The judges further 
observe, that there were anions the largfe number exhibited " some 
good implements, but many very inferior from the form of tooth, 
and that those with two rollers worked the best." 
The form of tooth alluded to by the judges has reference to tlie 
rollers which break the cake. The writer may suggest, in addi- 
tion, that this excellent implement, and others having rollers or 
parts which require to be adjusted at different distances asiuider 
in order to suit their various purposes, would be rendered more 
durable and effective by adopting a form of tooth for the driving- 
wheels which would admit of their being set deeper or .shallower 
in gear, and yet work with equal smoothness and truth. Such a 
form of teeth has been designed by that able mathematician and 
mechanician Professor Willis, of Cambridge; and a train of 
wheels on this principle has been mounted by Mr. Edward Cowper, 
Lecturer on Mechanics, &c.. King's College, London, wiio has 
obligingly assured the writer that he will explain the construction 
of the tooth to inquirers. 
Corn Cleaners. — Some remarks are made by the judges on 
these machines, but no premium was awarded. Mr. Ilornsby's 
implement is considered to be the best in the exhibition, and very 
creditable to him. It is stated to be able to " chaff' considerably 
more corn than any threshing machine can produce in the same 
time, and although not quite perfect in some points, to be a superior 
machine for general purposes." 
An entirely new winnowing machine, invented by George Par- 
sons and Richard Clybm-n, of West Lambrook and L ley, and ex- 
hibited by the Earl of Ducie, is represented to be " wort hy of high 
commendation, and will, doubtless, when perfected, prove a supe- 
rior implement." 
A corn-dressing or winnow ing-machine, by Mr. Joshua Cooch, 
