A MODEL OF A DRAF EQUALIZER AND A GEAR REDUCTION, the first, the draf equalizer, Patent No. 203380, Patentee Jacob Sebastain, New York City, Application filed February 13, 1878, Patented May 7, 1878, constructed of iron and wood (partial Patent office label); the second, a gear reduction, constructed of red painted iron (Patent office label missing)--11½in. long, 10½in. high (2)

细节

A MODEL OF A DRAF EQUALIZER AND A GEAR REDUCTION, the first, the draf equalizer, Patent No. 203380, Patentee Jacob Sebastain, New York City, Application filed February 13, 1878, Patented May 7, 1878, constructed of iron and wood (partial Patent office label); the second, a gear reduction, constructed of red painted iron (Patent office label missing)--11½in. long, 10½in. high (2)

来源

O. Rundle Gilbert Collection

拍品专文

A full explanation and copy of patent documents and drawings of the model of the draf equalizer accompanies this lot.