Note 427 — 1842.
Reading edition
These he patented in November, 1851. A description of the improvements, with sixteen illustrations, is given in the ‘Civil Engineer and Architects’ Journal,' xv., pp. 164, 165.
Reading edition
These he patented in November, 1851. A description of the improvements, with sixteen illustrations, is given in the ‘Civil Engineer and Architects’ Journal,' xv., pp. 164, 165.