SPECIALIZING TRANSPORTATION EQUIPMENT 



57 



economies can be realized by equipping the construction units with 

 suitable bodies to meet the various construction requirements. 



In reviewing the progress in the use of motor vehicles it is interest- 

 ing to note that in the first few years it became apparent that in order 

 to properly utilize the units it would be necessary to equip them with 

 special side box bodies, winches, derricks, etc. Designs for these 

 various items of equipment were prepared in accordance with the 

 best information at hand and the resulting units of about 1914-1916 



Fig. 10 — An Old Type of Side Box Body Construction 



were so heavy and bulky that some of the 3-ton trucks carrying this 

 equipment were loaded practically to capacity exclusive of their 

 complement of material, tools and men. This led to the introduc- 

 tion of 5-ton truck units in heavy construction work. Figure 10 shows 

 an old type of body equipment in which the arrangement and size 

 of the side box compartments was such that practically no free load 

 capacity was available. A rear view of this outfit would more clearly 

 indicate the absolute lack of space for carrying materials such as reels 

 of strand and cable, etc. 



In the past few years and at the present time, the developments 

 are toward lighter weight, more efficient bodies and labor saving 

 equipment as is illustrated in figure 11 and later in this paper under 

 the discussion of winches. 



The use of this equipment is permitting a material reduction in gang 

 sizes which in itself further reduces the weight to be carried on the 



