SILENT ROAD DRILL
"'FASTER WORKING SPEED LONDON. Nov. 10.—A silent pneumaticj I drill was referred _ to. „by Lord Horjjaj* at the . Noise Abatement' Leagig?", dinner on Monday;' tins being the invention of Mr. W. R. Pettit, of Victoria 'street. S.W. Lqrff LI order said that, if the claims • ‘for tlil|' drill were substantiated, the name wf the .inventor would “stand very high in the temple of fame.” Mi*. m*ettit said: “1 have worked on the invention for two yoai;s. In a JLoudoib street it would be -inaudible above Lie traffic noise. “It drives through concrete at twice the spdpd of some other types of [drill, lit can bore through 12 inches of coiicSete in six seconds. “It’(jail be operated by a ycutli, for theMr is no strain on the worker. It doesjjhiot jar or perk and is notsubject Bo jams.. ‘‘A 'sMjneer casing covers the drill, enveloping . it down to pnvomont : The drill is expected to he at work on the roads in from four to six •*, weeps’ time.
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https://paperspast.natlib.govt.nz/newspapers/OPNEWS19390116.2.21
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Opotiki News, Volume II, Issue 134, 16 January 1939, Page 4
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169SILENT ROAD DRILL Opotiki News, Volume II, Issue 134, 16 January 1939, Page 4
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