Improvements relating to the application of fertilising and other materials to land surfaces

摘要

647,952. Rollers. TEMPLE, P. L. Dec. 18, 1947, No. 19688. [Class 42 (ii)] [Also in Group I] The individual rollers 3 of a Cambridge roller (see also Group I) are provided with co-operating lateral grooves 45 within which is mounted a felt washer 46 to seal the interior of the roller against the access of dirt and the egress of lubricant. Lubrication of the rollers is effected by a longitudinal groove 44 in the roller axle 4. Specification 648,000, [Group I], is referred to.