CHAPTER XXVII 



ROAD MACHINERY 



Classes of Road Machinery. Road machinery may be 

 divided into two general classes, those used in building roads 

 and those for the maintaining of roads. Although machines 

 in the first class may be used in connection with the repairing 

 of roads, there are a few machines which are used solely for 

 this purpose. There is a rather wide variety of road 

 machines, and it is not possible in this chapter to describe 

 even briefly all of the machines which might be considered. 



SCRAPERS, ROLLERS, ETC. 

 Scoop Scrapers. One of the most simple machines used 



in connection with road construction is the scoop scraper, or 



"slip." This scraperis simply 



a large scoop arranged with a 



bail for drawing and handles for 



dumping. The size is usually 



indicated by the number of 



cubic feet of earth the scraper 



will hold, which varies from 3 



to 7. The cost of a scoop 



scraper varies from 6 to 10 dollars. The scoop scraper is 



used for moving earth short distances. 



Pole or Tongue Scraper. 

 The pole or tongue scraper is 

 used in leveling the road sur- 

 face. The size is indicated by 

 the width in inches, and the 

 cost varies from 6 to 7 dollars. 



167 



Fig. 87. Scoop scraper or slip. 



Fig. 



Tongue scraper. 



