Report of the Judges of Implements at Norwich. 561 
edge, by which arrangement great strength is imparted and 
the mouthpiece shortened ; when at work it is quite rigid, all 
vibration (so detrimental to such machines) being overcome ; 
in the bottom and outside of the mouthpiece, steel plates are 
fixed, which render the machine self-sharpening. The fly- 
wheel of the machine and the revolving fan are enclosed in a 
circular case, in connection with which a trunk or conductor is 
applied, which can be made at any required angle, so as to 
deliver the cut material into a sack, cart, or silo, as may be 
desired. On the fly-wheel shaft, and working loose thereon, a 
casting is applied, with fan arms carrying blades or spoons, 
which by a series of pulleys or wheels is made to revolve in an 
opposite direction to the fly-wheel, and at a sufficiently high 
speed to create a strong blast ; and, as the material is cut, lifts 
and delivers it through the trunk or conductor to a distance of 
30 to 40 feet. 
A patent safety bar is arranged so that the pressure of a 
man's body instantly throws the machine out of gear, and 
debars any accident. 
Messrs. Crossley Brothers, No. 3159, Gas-making Apparatus. 
— This gas-making apparatus, manufactured and patented by 
Mr. Henry Rogers, Watford, is for the manufacture of illumi- 
nating and heating gas from hydrocarbon oils. 
The plant is extremely simple and neat in its appearance ; 
and on this occasion, gas was being generated for six of the 
" Otto " gas-engines from a single retort and small gas-holder, 
about 6 feet in diameter. 
Gas-engines worked by this gas are said to be extremely 
economical, less than half the usual amount of gas being 
asserted to be used per H.P. per hour, while the cylinder and 
valves are not found to clog in the slightest degree. One great 
feature of the " Watford " gas appears to be its brilliancy and 
economy for illuminating purposes ; it is quite free from 
sulphur, and is therefore an absolutely pure gas, the cost being 
(as compared with London coal gas) about Is. 9c?. per 1000 
cubic feet. It is thus apparent that a country gentleman can 
at a small expense have his mansion lighted, his engine worked, 
and his cooking done by one and the same gas generator. 
About 50 of these works, Mr. Rogers informed us, are in opera- 
tion, and are giving general satisfaction ; the cost of erection 
being about one-third that of a coal-gas plant. 
Ofverum Estates Co., No. 2727, Chaff Cutter, Spangberg's 
Patent. — This chaff-cutter is entirely without cog-wheels, or 
feed rollers, and its construction is such that there is no loss of 
power by friction. The feeding is effected by a sliding 
traverse, to and fro, of the whole box, so giving a length of cut, 
