Don Mills, Ont. : Southam-MacLean Publications · leaf 337
indicated and car-rying two idlers. The upper one is fixed—strongly, asit lias to take the strain of the driving side of the beltwhen the machine is in operation. The lower idler ismade to move up and down on the vertical posts, be-ing carried on a sliding frame for that purpose. Bymeans of a cord… … Diagram of arrangement of idlers. so that the loose pulley on the drive-shaft of the mach-ine is not worn by the running of the tight belt. A belt shifter is mounted on the frame, and guidesthe belt just ahead of the upper or fixed idler pulley, sothat excessive wear of the belt is prevented when…
Furniture industry and trade · Woodworking industries
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