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Arthur Mumford Hughes
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Individual
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18,564. Hughes, A. M. Aug. 18. Asphalt paving ; paving - materials. -In the manufacture of tar macadam, granite obtained from the quarries of Inverkeithing, Fifeshire, and its immediate neighbourhood is employed. The granite is dried by heat and mixed with boiling crude tar in the proportion of four gallons of tar to a cubic yard. The tarred granite is allowed to season, and an additional one gallon of distilled tar to the cubic yard is added immediately before use.
GB190618564D1906-08-181906-08-18Improvements in Tar Macadam.
ExpiredGB190618564A
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