HIGHWAY OOXSTUrCTTOX 



Scrapers are generally used to move tin- material loosened b\ 

 ploughing; they are made of either iron or steel, ;m.| m ; , variety 

 of form, and are known by various names, MS "drag," " buck,'' 

 " pole/' and " wheeled". The drag scrapers are usually employed 

 on short hauls, the wheeled on long hauls. Fig. .T> illustrates "the 

 usual form of drag scrapers. 



Drag scrapers are made in three sizes. The smallest, for one- 

 horse, has a capacity of 3 cubic feet; the others, for two horses, 



Fig. 33. Drag Scraper. 



have a capacity of 5 to 7J cubic feet. The smallest weighs about 

 90 lb., and the larger ones from 94 to 102 Ib. 



Buck scrapers are made in two sizes two-horses, carrying 7i 

 cubic feet; four-horses, 12 cubic feet. 



Pole scraper, Fig. 34, is designed for use in making and leveling 

 earth roads and for cutting and cleaning ditches; it is also w r ell 



Fig. 34. Pole Scraper. 



adapted for moving earth short distances at a minimum cost. 



Wheeled scrapers consist of a metal box, usually steel, mounted 

 on wheels, and furnished with levers for raising, lowering, and 



