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Patents for Hazard Knowles
Patents 1 - 15 of 20
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NumberDatePatenteeTitleType
4,247XNov. 04, 1825H. KnowlesSprings for wagons
4,859XAug. 24, 1827H. KnowlesPlane stocks of cast ironbench planes
5,242XOct. 11, 1828H. KnowlesMode of covering buildings
6,441XApr. 01, 1831H. KnowlesImproved mode of manufacturing wood-screws
7,733XAug. 29, 1833H. KnowlesWhiffletree
197Jun. 10, 1837A.M. WilsonMowing Machinemowing machines
367Aug. 31, 1837G. HotchkissYoke for horses or oxen
5,334Oct. 16, 1847A. CaldwellImprovement in cutter-heads for planing-machinescutters
6,039Jan. 16, 1849H. KnowlesBearing for upright shaftsindustrial machine bearings
6,294Apr. 10, 1849H. KnowlesPlaning-machinewood planers
6,370Apr. 17, 1849H. KnowlesCutter for tonguing and groovingcutters
6,738Sep. 25, 1849H. KnowlesCaul for veneersveneer machines
7,475Jul. 02, 1850H. Knowles, H.C. BevingtonImprovement in the cutters and rakers of a grain and grass harvesterharvesters
7,603Aug. 27, 1850H. KnowlesTeeth for straight and circular sawssawblades
9,284Sep. 28, 1852H. KnowlesSaw millreciprocating sawmills
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