498 



THE INDIA RUBBER WORLD 



[June 1, 1919. 



S. A. E. Adopts Standards Recommended by 

 Tire and Rim Division. 



AT the annual meeting of the Society of Automobile En- 

 gineers, held February 5, 1919, recommendations of the 

 Tire and Rim Division of the Standards Committee were 

 approved for final presentation to the voting members of the 

 society. The following S. A. E. Standards were adopted by the 

 letter ballot which closed .April 5. 



SOLID TIRE SECTIONS. 



Minimum Total 

 Solid Tire Sectional Area of 

 Widths, Inches. Rubber, Square Inches. 

 i'yi 6.75 



4 7.75 



5 10.75 



6 13.75 



7 16.75 



8 19.75 



10 25.75 



12 31.75 



14 37.75 



The above table is in complete accord with the schedule 

 worked cut and adopted by the Solid Tire Division, War Serv- 

 ice Committee of the Rubber Industry of the U. S. A. These 

 areas include the hard and soft rubber used in solid tires. 

 INDUSTRIAL TRUCK TIRES. 

 Tire Dimensions. Wheel Dimensions. 



Nominal Sectional Wheel Widths of 



Diameter, Inches. Widths, Inches. Diameter. Inches. Felloes, Inches. 



10 zy^ 6 zy, 



10 5 6 4^ 



16 iVi 12 2K 



16 5 12 H'A 



20 m 16 2?i 



20 5 16 4)4 



24 iVi 20 2Vi 



28 3H 24 254 



Wheel diameters shall be 4 inches less than the nominal tire 

 diameters. The height of the finished tire is to be 2 inches for 

 all sizes. The width of the wheel felloe is to be in accordance 

 with the present S. A. E. standard truck tire practice and the 

 rim diameter tolerances will be plus 0.005, minus zero. This 

 will make all the former or present S. A. E. standards for in- 

 dustrial truck tire sizes null and void. 



BASE BANDS FOR SOLID TIRES. 



Base gallons. 



Band Limits '■ n 



Size. A. B. ofB. C. No. D. E. G. F. 



3H 3/4 4 1/4 ±1/32 11/32 18 0.191 3 7/16 3 9/16 1/16 



4 25/32 4 13/16 ±1/32 3/8 20 0.196 3 59/64 4 1/16 9/128 



5 27/32 5 7/8 ±1/32 7/16 26 0.189 4 59/64 5 1/16 9/128 



6 27/32 6 7/8 ±1/32 7/16 32 0.185 5 59/64 6 1/16 9/128 



7 27/32 7 7/8 ±1/32 7/16 36 0.192 6 59/64 7 1/16 9/128 



8 7/8 8 7/8 ±3/64 7/16 40 0.196 7 27/32 8 5/64 

 10 7/8 10 7/8 ±3/64 7/16 50 0.196 9 27/32 10 5/64 

 12 7/8 12 7/8 ±3/64 7/16 60 0.197 11 27/32 12 5/64 

 14 7/8 14 7/8 ±3/64 7/16 70 0197 13 27/32 14 5/64 



The above dimensions conform to the recommended series of 

 sohd tire sizes and are in accordance with the base bands 

 recommended and adopted by the War Service Committee of 

 the Rubber Industry of the U. S. K. The recommended bands 



.•-ame general dimensions apply to bands with either 



fac 



mg. 



Base Bands for Solid Tires. 



relate to corrugated mill sections and it is optional with tire 

 manufacturers to use either mill corrugated or dovetail facings, 



BASE BANDS FOR INDUSTRIAL TRUCK WHEELS. 



The sections of tires and base bands as recommended for solid 

 tires for trucks will also apply to industrial truck wheels, and 

 the recommended S. A. E. standard 3K and 5-inch pressed-on 

 channel sections shown in the accompanying drawing is adopted 

 for industrial truck wheels. 



EDGES OF FELLOE BANDS. 



The present specifica- 

 tion as revised at the 

 June meeting in Dayttm 

 to 3/16-inch radius on 

 the inside edges and 

 1/16-inch radius on the 

 outside edges of bands, 

 is a specification to 

 which it is practically 

 impossible to get the 

 mills to roll steel; there- 

 fore, the edges of felloe 

 bands has been changed to 3/32-inch radius for all edges. 



ALLOWABLE TOLERANCES FOR FELLOE BANDS. 



The tolerances given on page 8a, S. A. E. Handbook. Volume 

 I, are used for the inspection of not only steel bands on wood 

 wheels but also for steel wheels. The wording at the bottom of 

 page 8a is changed to read, "Band circumference after applica- 

 tion to wood wheels and circumferences of steel wheels." 



On account of the difiiculty of inspecting circumferences with 

 a tape to the present close tolerances. "Band circumferences be- 

 fore application" is changed to prevailing commercial tolerances 

 of plus 1/32 minus 1/16-inch. 



WOOD FELLOE DIMENSIONS— PNEUMATIC TIRE RIMS. 



At the June, 1918. meeting of the Society wood felloe dimen- 

 sions were adopted for only the 6, 7 and 8-inch rims. To com- 

 plete this specification for 31/2, 4 and 4,'4-inch rims, the follow- 

 ing dimensions are adopted: 



Edges of Felloe Bands. 



These felloe band dimensions conform with those adopted by 

 the Automotive Wood Wheel Manufacturers' .Association. 



S. A. E. TIRE AND RIM DIVISION. 



The Tire and Rim Division of the 1919 Standards Commit- 

 tee has been assigned the following subjects: 



Airplane Landing Wheels, Carrying Capacit}- of Solid Tires, 

 Pneumatic Tire Sections, Pneumatic Tires for Passenger Cars 

 and Commercial Vehicles, Rim Dimensions — Cast Steel Wheels, 

 Rubber Tires for Tractors. S. A. E. Deflection and Set Tests for 

 Rims, Section Dimensions of Solid Tire Single and Dual Wheels 

 with reference to thickness of permanent metal felloe band ; 

 Solid Tire and Wheel Diameters, Wheel Circumferences ; Solid 

 Tire Sizes and Wood Spokes, Passenger Cars. 



