Nova Patents
US6627A

Untitled record

Abstract

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US6627A, drawing sheet 1
Sheet 1 of 2

1 claim: 1 independent, 0 dependent

  1. 1
    secure by Letters Patent, is— The combination of the convex surface a, and the iron, or metalic, weight b. made 70 concave to fit the convexity λ of a, as represented in Figs. 1, 2, 3, and the perspective view. S. BILLINGS. Witnesses:J. Mitchell, J. D. Totten.