July 1, 1917.] 



THE INDIA RUBBER WORLD 



579 



A 



5 



D 



S. A. E. Demountable Rim Fastenings for Class A and B Military Trucks. 



cordance with S. A, E. standards, the 36-inch with 12 holes and 

 the 40-inch with 15 holes. These flanges shall be provided with 

 bolt holes 9/16 inch square, with spherical counterboring that 

 will permit them to be used for either inside or outside flanges. 

 See Figs. A and B. 



4. Side wedge rings shall be as per Fig. C, or equivalent. 



5. Center wedge rings shall be as per Fig. D, or equivalent. 



6. Ends of all side wedge rings shall be cut as per Fig. E, or 

 equivalent. 



7. All nuts shall be as per Fig. F, or equivalent, preferably 

 case-hardened. 



8. Referring to Fig. F, bolt heads shall be made to conform 

 to the square hole and the spherical counterboring in the side 

 flanges, Fig. A. The lengths shall be according to the following 

 table : 



9. Contours of the underside of tire channels shall be equal 

 to or interchangeable with the contours shown in the lower 

 illustration. 



10. It is understood that the present tire sizes in the military 

 truck specifications are : 



36 by 4 inch, single 

 36 by 5 inch, single 

 36 by 6 inch, single 



36 by 7 inch, single 

 36 by 5 inch, dual 

 36 by 6 inch, dual 



CARRYING CAPACITIES AND INFLATION PRESSURES OF PNEU- 

 MATIC TIRES. 



The division recommends that the inflation pressures given in 

 the following table be standardized, the loads per tire and the 

 pounds per square inch inflation being maximum values. 



All bolts Yz by 13 U. S. S. threaded IJ-^-inch minimum. 



Size of Tire. Indies. 

 3 



4 



5 



5H 



6 



Maximum Load. 



Pound per Tire. 



375 



570 



815 



1,100 



1,300 



1,700 



2,000 



Maximum Inflation 

 Pressure. Pound 

 per Square Inch. 



45 



55 



65 



75 



80 



85 



90 



6 "DUAL 



S. A. E. Demountable Rims for Class A and B Military Trucks. 



