| Show THE NEW DRIVE an important development in the field of power transmission machinery has just been announced by the allis chalmers mfg mag co who have recently perfected an entirely new type of short center flexible drive known as the tex rope drive the drive consists of two grooved sheaves and a number of specially constructed endless V belts the sheaves are set just far enough apart so that the belts fit the grooves without either tension or slack previously no short center drive existed which did not have hav e slip back lash or lost motion which caused jerky I 1 barting parting tar ting and uneven running since the belts just fit t the sheaves there is no slack or lost motion in in the drive because of the V construction the they y cannot slip as the harder arder the pull the more firmly the belts grip the grooves gov in eing elastic and stretchable they cannot jerk either starting acceleration or running nor can tl they ey transmit vibrations orations but act as cushions between the driving an and d driven iven machines therefore smoothness of transmission never ver attained before is delivered by the drive the as delivered by opposed to the series of linear pulsations ordinary short center drive is bearing low since no belt tension pressures are f it is allem silent amplo em employed y ed T the he drive bocc occupies dupies very little space safe and is di dirt rt perfectly clean unaffected by moisture or simple ale and trouble proof since there is no slip sh 1 t the lie speed t ratios are fixed and exact it is durable and each belt carries its proportional share of the load drives from ya to h p with ratios up to 7 to I 1 and belt speeds from feet have already been placed in service they have been applied to nearly every industry notably textile machinery fans and blowers machine tools food manufacturing machines refrigeration mining crushing wood and metal working machinery elevators and conveyors paper flour and rubber mill drives etc |
