| Year | 1939 |
| Date | 09-Nov |
| Volume | 81 |
| Issue | 2,009 |
| Page | 536 |
| Category | Workshop |
| Part | |
| Title | A Single-Stage Air Compressor |
| Author | Bertram C.Joy |
| Notes | Some suggestions for making a small power-driven machine. Compressor types, lubrication, general arrangement and part section elevation, dimensioned and sectional details |