Arizona republican., 1921-06-26

solid truch tire. It is built to meet conditions that are not exceptional and for that season follows standard conventional line. Solid truck tires of this type are most economical and satisfactory for all ordinary trucking purposes where medium sized trucks are used and where prescribed loads and speeds are fairly closely adhered to. The field for the regular tire in the industries listed above is. with certain exceptions, on the front and rear wheels of trucks of 1 F ton ca pacity and on front wheels of trucks above the 1 F ton class except as noted hereafter. Circumstances and requirerhents may arise under which trucks of the classes mentioned may be operated more economically on other types of tires, such circum stances as regularly hauling heavy loads over very rough pavements or making long distance trips and trips over country roads. Under these circumstances, it may be preferable to use either the high size solid tire or pneumatic truck tires. Such con ditions are exception to the general rule and must be so dealt with.
 There are certain circumstances and conditions of truvK hauling which warrant the use of the high size type 
 regular tire in that it furnishes greater tire height and cross sectional area. therefore greater cushioning. allows somewhat greater load carrying ca pacity. gives greater mileage: retains vitality longer and allow less vibra- ton in the truck
 The high size tire costs more and therefore should be recommended only for such uses as will bring a return in proportion to the extra money invested
 The big size truck tire can be used most economically on the front wheels of all trucks above the F. ton capacity operating under the general conditions heretofore enumerated but where in addition the following re- quirements are important: (1) A de-
 mand for cushioning effect not as
 great as that furnished by pneuma- tics but greater than supplied by reg ular tires for example. where a solid truck tire is compelled to run regu- larly over rought city pavements: CD
 wheneversit is expedient to carry oc-
 casiopal heavy loads. such as large
 pieces of machinery; (s) where the
 user wishes to obtain greater n-0eage l from his solid tires with longer time 1 between periods of replacement; (4 1 where trucks are operated at long distances from tire application facili- ties. such as in isolated rural dis l tricts: (5) to improve the steering | qualities on heavy duty trucks
 The big single type of solid trucl I tire has for it's best example ths i mono-twin which is designed ant
 built to take the place on rear wheel! of dual solids. whether high size ol | regular. The field for this tire is al l present on the rear wheels of trucks l of capacity above 1 F tons, requiring I tire of ' inches to IA inches il width. It takes the place of cushion tires and cushion wheels, carries ; l heavier load than dual tires of thu
 same cross sectional width and main
 tains this carrying capacity as wei l as all toeher features undiminishe,
 throughout it's tire life.
 H The development and perfection O
 the pneumatic truck tire-the type 0
 pneumatic that is built especially fo
 trucks and is not merely an enlarge
 passenger car type-stands out a one of the greatest steps in true evolution. There is no question bu that it's place is established for us 2-ton capacity where the elements c on all trucls up to and inc1udin traction, speed and cushioning are es pecially needed in truck operation The swing to large pnematics ha been so rapid that many mistake have been made in marketing then This company believes that size above eight inch have not yet bee developed beyond the experiment; ! stage
 Pneumatic truck tires may be use | economically on the front and req
 wheels of trucks of capacities up and including two tons and on Il - xr-tn If tol- 4uh