Patents of Interest to Builders. Reinforced Concrete Water-Ballast Roller. patent, No. 40405, has been taken out by Robert Wilson Hood, WhanUi 1 *€- r. garei. It consists in a reinforced concrete water-ballast roller, the axle embodied in a cylinder of concrete, and the use of paper and dry sand in th'e construction of roller.
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https://paperspast.natlib.govt.nz/periodicals/P19190101.2.18.6
Bibliographic details
Progress, Volume XIV, Issue 5, 1 January 1919, Page 412
Word Count
53Page 412 Advertisement 6 Progress, Volume XIV, Issue 5, 1 January 1919, Page 412
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