11. As early as 1568, a separate fly wheel powered a lathe via a drive belt . 12. Many are coupled to it with a drive belt . 13. Auxiliary power was by an engine, with the external drive belt enclosed in a wooden casing. 14. Cams and levers and drive belts are replaced by source-code statements and subroutines and disk files. 15. A drive belt , or a rotating shaft would be expensive and have very high friction losses. 16. Inspect the drive belt ; make sure that it is properly tightened and not frayed or cracked. 17. During shutdown, the actuator is used to lower the upper sheave to loosen the drive belts . 18. Furthermore, over time the drive belt can wear or lose mix generally prefer to use direct-drive turntables. 19. In 1935, the first tests for the production of rayon for tyres and driving belts were performed. 20. The second configuration uses two drive belts .
