| Year | 1923 |
| Date | 26-Apr |
| Volume | 48 |
| Issue | 1,148 |
| Page | 440 |
| Category | Internal Combustion |
| Part | |
| Title | Some Remarks on "Silencers" |
| Author | V.E.Johnson |
| Notes | Why a silencer must be used, some principles of silencing, how to make the gases escape freely, cooling the gases, strength, size, back pressure, the venturi tube, materials, an efficient and compact design |