108 



[Assembly 



Hubbard's patent self-adjusting and short-turning carriage 



GEARING. 



These are improvements in the construction and application of 

 carriage springs, with gearing so arranged as greatly to lessen the 

 space required in turning. In constructing an ordinary stage 

 coach on this plan, the bottom forms the segment of a circle of 

 22 feet diameter. There are seven springs running from the 

 front of the body to the rear axle, and six springs, placed alter- 

 nately between them, passing from the rear end of the body to the 

 bolster on the front axle. The springs are made of wood, 1^ 

 inches wide by 1| inches deep, and weigh less than fifty pounds. 

 It requires over two tons to bring them down to their bearings, 

 and when brought down they roll together without any striking 

 or concussion, and spring as delicately when carrying but one 

 passenger as when carrying twenty. It is obvious that in this 

 position these springs combine a greater degree of strength than 

 will be required, with little or no liability to get out of order, and 

 as to their durability, we see nothing in the mode of construction 

 or use which is likely to impair it. 



The arrangement for short turning is simple, consisting mainly 

 in placing the king bolt a certain distance in rear of the front 



