Sewall Leech's ruddar collar, 1870

John E. Jones's surge reliever, 1870

Walter Everson, tug for towing canal boats, 1871

Cornelius Schilling's patent model, 1871

Hervey Calkin's life raft, 1871

Harvy Fowler's canal-boat propulsion device, 1871

John Jones's elastic lanyard, 1872

William Clark's ice auger, 1873

George Clark's life raft, 1874

A. J. Bell's 1874 patent model

A. G. and A. T. Sterling's 1874 life-boat

James Rees, capstan, 1874

Frank Fackrell's life boat, 1874

Jackson Harrington's 1875 propeller