GB190723582A - Improvements in or connected with Conveyors of the Band or Belt Type. - Google Patents

Abstract

23,582. Blackett, W. C., Garforth, W. E., and Bousfield, G. W. Oct. 25. Conveyers.-In band conveyers, an increased driving-surface is provided for the conveyer belt without a corresponding increase in the size of the driving- pulley. Fig. 1 shows a sectional elevation and Fig. 2 a sectional plan of the driving loop of a conveyer belt. The conveyer band 7 is driven by the friction between it and a short endless belt 6 which passes around the pulleys 1, 2, 4, of which the first is driven by ordinary chain gearing from the motor 10. The main belt 7 passes over the top of the short belt, around the pulley 1, then over the jockey pulley 4 between the latter and the short belt, under the pulley 2, and over the roller 8. In the construction shown, the pulley 1 is provided with recessed spur teeth, which drive the chains 13 to which the belt 6 is attached by lugs 14 on the chain links. The conveyer belt is pressed on to the top surface of the short belt by the weight of the material conveyed, while the underside faces of the belts are pressed together by the jockey pulley 4, the adjusting means for which are not shown. In another arrangement the pulley 2 is driven from the pulley 1 by external chain gearing, and the belt 6 is driven by friction, the amount of which is regulated by adjusting the jockey pulley 4.