278 Improvements in Contrivances for Varying 



SPECIFICATION 



OF 



David Anderson, of Fairview, Stawell, in the Colony of 

 Victoria, Gentleman, for an invention entitled 



"Improvements in Contrivances for Varying the 

 Gauge of the Wheels of Rolling Stock for 

 Rail and other Permanent Ways." 



My invention consists mainly of certain improvements in 

 railway and other rolling stock, by which the gauge of the 

 wheels may be adjusted ; and, secondly, of machinery 

 whereby such alteration or adjustment of gauge is effected. 



The first part of my invention consists of a peculiar con- 

 struction of the axles of rolling stock for rail and other per- 

 manent ways in which either wheel is keyed to a sleeve, the 

 inner end of which terminates in a flange. This sleeve slides 

 over and upon the axle and the feathers thereon. The axle 

 I make with a solid collar in the centre, and on either side 

 of such collar I place a clamp or hinged collar having two 

 or more recesses or hollows to fit over the flange of the 

 sleeve and a strong hinged bolt to tighten said clamp thereon. 

 I bolt both clamps or hinged collars together through the 

 solid collar of the axle. 



The second part of my invention consists of a certain 

 combination and arrangement of machinery in which a sole 

 plate carries the bearings for two sets of rollers. Each set_ 

 consists of two rollers upon which travels a platform, the 

 upper side of which is recessed to the shape of the tire of a 

 wheel, or carries a rail. The underside carries a nut (right 

 or left handed as the case may be) in which one end of a 

 right and left handed screw works. This screw has a thrust 

 bearing in the centre of the sole plate, and is provided with 

 a collar having sockets for a crowbar or other means of 

 turning it. 



