Patent Model - Improvement in Knitting-Machine Burrs
Maker and role
Andrew Root, Patentee
George Jackson, Patentee
Production date
Jan 28 1879
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Object detail
Media/Materials
Iron
Measurements
2 3/4" (7cm)
2" (5.1cm)
2" (5.1cm)
Description
Root and Jackson's patent improvements "belong to the class of burrs or wheels having removable blades or wings, and they are applicable either for cast-off burrs or for landing-burrs; and they have for their objects, mainly, making the nut which unites together the removable parts with a covered cavity, serving as an oil-chamber, into which oil is drawn up and retained and protected, and in making an annular cavity on the under-face of the hub..." (Patent Number 211,791)
Collection
Object number
2016.14.4a-c
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