WHEELED VEHICLES 
187 
the front end of the log clear of the groiind. The tongue is then 
chained to the log, the horses atta(;hed to the front end of it 
and the load is ready to move. By using chains, several logs 
may be handled at one time. 
Carts of this character are used for hauling short hardwood 
Fig. 53. — A 81ip-tongue Log Cart, showing the Position of the Load during 
Transit. The short lever arm above the main tongue is attached to the 
rotating bunk to which the timber grabs are fastened. It automatically 
assumes a nearly vertical position, when the cart tongue is pushed to the 
rear. Texas. 
logs in the Lake States, sugar pine in California and yellow pine 
in the South. 
A type known as the "slip tongue" cart has now largely super- 
seded the older forms. It has a tongue 28 or 30 feet long, which 
slides between the hounds of the cart. It is weighted on the 
rear end so as to lighten the load on the necks of the wheel animals. 
There is a roller directly over the axle, to which the grapples are 
attached by chains.^ Fastened to this roller is a short lever 
arm which is connected to the sliding tongue by means of a chain. 
The cart is driven over a log, a catch holding the slip tongue 
and the lever arm, is loosened, the team backed up and the tongue 
1 See Figs. 53 and 54. 
