| Year | 1934 |
| Date | 19-Jul |
| Volume | 71 |
| Issue | 1,732 |
| Page | 51 |
| Category | Workshop |
| Part | |
| Title | Designing Small Air Compressors |
| Author | Edgar T.Westbury |
| Notes | A handy electric-driven compressor, converting steam or I.C. engines, side-valve water cooled I.C. engine converted, air cooled two-stroke conversion, specially built compressors, mechanical efficiency, volumetric efficiency, thermal efficiency, valves |