84 Hnlil/oXTAL BUCKTON MACHINE. 



illustration, Fig. 33, was made, in the first place, to 

 the design of the late Mr. David Kirkaldy, for his now well- 

 known testing works in Southwark. Afterwards a similar 

 machine was supplied by Messrs. Greenwood and Batley 

 to the Belgian Government. 



The Kirkaldy machine, as it may be called, is one of the 

 largest machines in use. It has a maximum capacity 

 of 1,000,000 lb., or nearly 450 tons; it is arranged 

 for testing in tension, compression, bending, shearing, 

 bulging, and torsion. The limiting length of a tension 

 specimen is 18 ft. 6 in. 



The general plan of the machine is similar to that of 

 the two which have just been described. The straining 

 cylinder will be seen at the extreme 'left of the machine; 

 its ram has an area of 150 sq. in. and works with water at 

 a pressure of up to 3 tons per sq. in. At the opposite end 

 of the bed is the lever Aveighing apparatus. The cross- 

 head, which carries the right-hand end of a tension speci- 

 men, is suspended upon knife edges by three pendant links, 

 and is linked longitudinally to the knife edge of the first- 

 motion lever. The long arm of this lever, instead of 

 projecting outwards in the line of the machine, stands out 

 at right angles, as will be seen in the illustration. There 

 are altogether three levers, the second and third being 

 carried on a bed or frame placed to the left of the machine 

 and not continuous with it. The outer or long end of the 

 first lever is connected to the short end of the second, 

 which' has its arms at right angles, by means of a long^ 

 horizontal link, and the outer end of the second lever is 

 connected to the short end of the third lever, which is 

 straight, by a short vertical link in compression. 



The maximum combined leverage is 2,000 to 1. Both 

 the second and third levers are graduated, and provided 

 with travelling carriages and weights. 



HORIZONTAL COMPOUND-LEVER MACHINE. 

 BY MESSRS. BUCKTOX, OF LEEDS. 



42. This machine was not included in the general class 

 of horizontal compound machines. It is a comparatively 

 new, and quite distinctive, type ; only one or two machines 

 have, so far, been built. There is no doubt, however, that 

 this machine possesses many advantages over previous 

 machines of other designs, which go far to make it one of 

 the "best yet produced, and one which probably has a very 

 bright futuie. 



