Beport on Miscellaneous Implements at Shrewsburi/, Sfc. 33 
bed of the machine in two sets ; one set of four on one side of the axle bed 
being worked by one connecting rod and joint from the top shoe, and another 
set of four springs on the other side of the axle bed being worked by the 
.^ame means from the bottom shoe ; thus eight springs are worked by two 
joints only, and possess various advantages, some of which are as follows : 
Their pull being equal and counteracting, the axle-bed remains unaffected, 
1 hey act as guides lor tlie slices; ihey place no strain on the frame of the 
niachine, as tbey do not support the shoes ; their action through dead weight 
being alwaj's on them does not deteriorate, and if breakage occurred, no harm 
would happen ; by tlieir application the single-crank system can be applied 
to machines of greater width than 4 feet 6 inches, as any required resistance 
to the momentum of the shoes can be obtained. In the machine as it stands, 
18 bearings and joints requiring oil are done away with, while the efficiency 
of the shakers is greatly increased, and as their weight is much reduced, and 
as the riddles or shoes are controlled by powerful momentum springs, the 
power consumed in driving is much less than in the ordinary threshing- 
machine. 
31?-. Charles Perkin, Sliarston, Northenden, Manchester, exhi- 
bited a Hay-Purifying Apparatus. This consisted of a set of 
steam-pipes to be inserted horizontally at equal distances from 
each other in the stack to be operated on. These pipes are 
connected with an ordinary steam-boiler, and a certain pressure 
of steam is thus forced into the stack. This treatment is said 
to materially improve musty or mildewed hay. The price is 6?. 
Messrs. Corbett and Son, Park Street Works, Wellington, Shrop- 
shire, exhibited a Chaff-Cutter and Root-Pulper combined. The- 
two machines are mounted on a frame a given height above the 
ground-floor. An elevator is attacned to the hopper into which 
the roots are thrown, and these are carried by it into the pulper» 
The pulper and chaff-cutter are worked simultaneously, and the 
materials are delivered into spouts and dropped on to the floor^ 
mixed in such proportions as the feeders desire. 
Messrs. Hawthorn, Davey and Co., of Sun Foundry, Leeds, 
Yorkshire, exhibited three small Engines, which they designate 
" Domestic Motors." They are chiefly adapted for pumping 
water, but can be used for driving machinery. They occupy 
very little space, are neat and compact, and well finished. The 
accompanying description and illustrations are taken from the 
' Engineer ' : — 
The three engines exhibited are rated by the makers at \, 5, and 1 horse- 
power respectively, and are all of the same general design, this design being 
shown by illustrations on pp. 34 and 35. Referring to Figs. 12 and 13 there given, 
it will be seen that the arrangement consists of a cast-iron boiler containing a 
cast-iron firebox with uptake, this uptake, which is of rectangular section, 
being traversed by rows of wrought-iron tubes. The firebox and uptake are 
cast in one piece, and are connected to the outer shell by cement joints caulked 
into the socket spaces left to receive them at top and bottom as shown, the 
joint at the fire-hole being made by a ring coated with red-lead and driven in. 
The upper part of the boiler is extended to contain the steam cylinder, which 
is made of gun-metal and fitted with a slide valve in the ordinary way. 
VOL. XXI. — S. S. D 
