HORIZONTAL BUCKTON MACHINE. 



87 



pit prop. It will be seen that the right-hand end of the 

 specimen is being pressed upon by a crosshead, which is 

 keyed to the ram frame, this latter being forced in a left- 

 hand direction by the pressure of the water. The left- 

 hand end of the specimen presses upon the crosshead, 

 which is attached to the two screws coming from the first 

 knife-edge of the first lever. 



The hydraulic pressure is supplied from pumps and an 

 accumulator. 



The jockey weight is moved along its lever by a small 

 handwheel and chain gearing. The load on the specimen 

 is indicated in the usual way by direct graduations on the 

 steel scale attached to the beam. 



An inspection of Figs. 34 and 35 should bring home 

 two points in which this machine has a great advantage 

 over others which have been described. In the first place 



FIG. 36 View of Cardiff Machine used for Beading Test. 



alterations both in the length of specimen, and also in the 

 kind of stress to be applied, can very easily be made ; thus, 

 if the specimen S (Fig. 34) has to be replaced by a shorter 

 one, it is only necessary to take out the keys, slide the 

 crosshead H towards the right for the required distance, 



