Improvements in indiarubber paving and like blocks

摘要

379,551. Rubber paving blocks. MACKUSICK, M. H. and NORTHWESTERN RUBBER CO., Canal Works, Hawthorn Road, Litherland, Liverpool. Oct. 21, 1931, No. 29217. [Class 87 (i).] The blocks b are moulded with projecting split pins a adapted to be opened out to key with a plastic foundation before it sets. Grooves d may also be provided underneath the block to key with the foundation. Specification 3809/03, [Class 87, Moulding &c.], is referred to.