HORIZONTAL BUCKTON MACHINE. 



On Fig. 34 is shown a diagrammatic view of this 

 machine. As has been said, the machine is horizontal. 

 The straining is effected by means of an hydraulic ram, A, 

 and the load measured by means of a system of two levers, 

 a straight one B, carrying an invariable jockey weight D, 

 and a bell-crank lever C connected with the short arm of 



I 



s 



Q O O Q 



I 



w=* 



FIG. 34. Diagrammatic Vievr of Buckton's Compound Lever Machine. 



the lever B, by the vertical link E. To the short arm of 

 the lever C is attached, through two parallel rods and cross- 

 head and shackle, the right-hand end of the tension specimen 

 S. This crosshead can be moved along to any required 

 position by rotating the rods, which are screwed from end 

 to end, and so moving the crosshead, which acts as a nut to 

 the screws. So far, the arrangement has not been much 

 unlike many other existing horizontal machines. It is, 

 however, in the part of the machine to be described next 

 that the chief novelty lies, namely, the straining arrange- 

 ments. 



The left-hand end of the tension specimen, S, is 

 attached by means of the usual clips to a crosshead H, 

 which is carried by a massive cast frame G, which itself is 

 continuous with the ram A. This frame is notched from end 

 to end, and the crosshead H can be moved into any 

 required position, and fixed there by means of keys. A 

 second S, shown by dotted lines, is a specimen being tested 

 in compression. 



*The first machine of this type was made to suit Pro- 

 fessor Kennedy's requirements, to the designs of Mr. Wick- 

 steed, by Messrs. Buckton, of Leeds, and has a maximum 

 capacity of 50 tons. 



A later one has recently been made for Professor 

 Elliott, of the University College of South Wales, Cardiff. 

 This is a 100-ton machine, and, in addition to its possible 



* Engineering, September 12cb, 1890. 



