PROFESSOR O. REYNOLDS AND MR. W. H. MOORBY 
3(J4 
brake were subjected, it was found necessary to bind with tape the rubber pipes 
supplying the water to ensure them agfainst bursting. 
The extra stiffness thus given to these pipes did not much affect the free working 
of the brake, since none of them had a leverage of more than 4 inches from the 
centre of the shaft. 
The case was, however, different with the bent rubber connection between the 
brake and the discharge pipe, since in this case the leverage is about 1 foot 6 inches. 
This pipe was eventually inserted in a cage consisting of a spiral of copper wire, 
inches in diameter, through the coils of which were threaded two longitudinal 
wires to prevent elongation of the cage and rubber tube. By this arrangement the 
flexibility of the rubber tube was almost unimpaired. 
The Device for Catching the Leahage at the Bottom Regidating Cock .— 
(Part I., par. 36.) 
14. It was found impossible to prevent leakage taking place, generally to a small 
extent, from the automatic cock controlling the amount of water in the brake. It 
was, therefore, necessary to provide some means of catching this water, and it was 
very important that no impediment should be placed in the way of the free working 
of the cock spindle. 
Fig. 6. 
^rom %6r<iAe 
To o//^c/)cLr^e pipe 
A tight joint was made between the valve seating, B, and the bracket, C, which 
carried the overhanging end of the valve, A. All the leakage, therefore, occurred 
along the valve spindle at ee. The method adopted to catch it was to solder a brass 
ring on to the bracket at D, and fit a ring of cork of the same diametei’ tightly on 
