The SciencesFebruary 20, 1897
The Hardie Compressed Air Motors
Stories by Herman Haupt
The SciencesFebruary 20, 1897
Test of a Compressed Air Reservoir taken from a Hardie Motor after having been in use Two Years
The SciencesFebruary 13, 1897
Compressed Air for City and Suburban Traction
The SciencesFebruary 6, 1897
Compressed Air for City and Suburban Traction
The SciencesAugust 6, 1892
The Pneumatic Motor for Surface Roads