Miscellaneous Implements Exhibited at Boncaster. 537 
set pin releasing the whole of the parts, there being neither 
keys nor feathers employed about it. The small number of parts, 
the directness of the action, and the general simplicity of the 
machine, allow it to be constructed lightly without impairing 
its strength, and consequently the draught is liglit. Its cost is 
Vol 13.S'. 
Messrs. B. A. Lister & Co., Dursley, Gloucestershire, exhi- 
bited their "Alexandra" Cream Separator (Art. 1032), which 
was successful in gaining the first prize in the trials open to 
power separators. The working of the machine is described in 
the report of the trials (page 508), so that a brief description of 
the separator will suffice here. A distinctive feature is that the 
steel bowl is simply supported on the top of the sjjindle, the 
upper end of which is rounded, and fits into a recess in the 
bottom of the steel bowl. No matter in what position the 
bowl is placed, directly the spindle attains anything like its 
proper speed the bowl centres itself, and runs perfectly true, 
thus avoiding all strain in the neck-bearing of the spindle, 
and rendering it unnecessary that the frame should be placed 
perfectly level, as the bowl finds its own centre. The bottom of 
the driving-spindle runs in a foot-step in which are two ball- 
bearings, so that the friction is small, and the lubrication is 
rendered easy and effective. 
The neck-bushing is oiled in an ingenious and simple 
manner. The oil is conducted to the bottom of the bushing 
with a small dish which is formed within it. It is next cairied 
upwards by a spiral groove cut in tlie bushing, and then over- 
flows, and is carried away in a dish formed on the top of 
the bushing, and is led into an oil drip tin, so that the oil 
is continually making a circuit of the bearing. The steel drum 
is made of one solid piece of wrought steel, and the steel is 
equal to a tensile strain of sixty tons to the square inch. The 
machine is driven by a light endless cotton band one inch 
wide, no belt-tightener being required, as the machine can be 
easily shifted, and owing to its construction it can be placed 
unfixed on any floor, without fear of its shifting its position 
unless it is desired. 
Messrs. Blackstone & Co., Limited, Rutland Engineering 
Works, Stamford, have, in the construction of their Rutland 
Mower (Art. 2901), adopted principles which enable the ma- 
chine to cut out the grass from the bottoms of furrows. The 
entire body of the machine containing the gearing is hung on 
bearings, or brackets, or arms, fixed to the main axle, and 
the hinge-beam, being as usual hinged to the body, the 
tinger-beam is practically on ^^pivers^l joint, the move- 
; VOL, n, T. s — 7 " / . ■ . nn 
