DOUBLE-PITCH CONVEYOR ROLLER CHAINS, ATTACHMENTS AND SPROCKETS

摘要

For many years, roller chain manufacturers have furnished a substantial volume of precision steel roller chains and sprockets of a limited series for specific con¬veying applications, the chains having pins and bushings identical with American Standard Transmission Roller Chains, rollers identical to, or as an alternate, approximately twice as large in diameter as those of such Transmission Roller Chains, and link plates with straight-edged contours, extended in pitch to be double the pitch of those of the corresponding Transmission Roller Chains conforming to ASA B29.1-1950, which subsequently are referred to as Base Series Chains.nThese double-pitch steel conveyor chains fre¬quently have been assembled with some parts of modified design to adapt the chains for use in conveying, elevating or timing operations.