624 Report on Miscellaneous Implement Awards at Derhy. 
Mr. Ley showed a large collection of Driving Chains of 
different sizes, with Elevator Buckets and Carriers for various 
purposes. For raising large quantities of material such 
machinery is most useful ; and at the works, which are well 
worth a visit, we saw portions of a conductor being made for 
a London gas company to carry from 30 to 40 tons of coal per 
hour a considerable distance, effecting a great saving over 
horse power. 
Ewart's Chain requires to work on a sproggle wheel. Quite 
a novel arrangement, shown for the first time in this country, 
are Dodge's Patent Detachable Friction Drive-Chains, which 
work in a grooved wheel by means of tongues or claws, which 
fit into the groove, affording sufficient hold of the wheel without 
any loss of power. The following illustration will show the 
forms of the links : — 
Eig. 2?).— Dodge's Patent Detachable Friction Drive Chains, No. 4926. 
This chain works with very little noise or friction, and is 
available for many purposes. The price ranges from Is. to 10s. 
per foot lineal. Another very strong chain. Dodge's Giant 
Chain, which is much used for extra heavy work, comprises a 
series of double and single links. Some idea of this chain may 
be gathered from Fig. 26, p. 625. 
The collection of malleable castings was noticeable for accu- 
racy and finish. The quality of the material was proved by 
hammering and twisting a link into such a position as would 
be a serious test for wrought iron. The mouldings are taken 
from stereotypes, an invention of Mr. Ley's, which secures great 
accuracy. New uses for these various forms of chain-gear are 
constantly being found out, and having regard to their durability 
and comparative cheapness as compared with leather, it is not a 
matter of surprise to find that Mr. Ley is greatly increasing his 
producing power. 
Messrs. Foster and Co., of the Wellington Foundry, Lincoln, 
exhibited an engine fitted with Starlieys Automatic Expansion 
Slide Valve Gear, actuated by the governor. 
This is an arrangement for shifting the position of the 
eccentric by means of a train of wheels gearing into each other, 
independent motion being imparted thereto by any variation 
of the speed of the engine. 
