| 1933 FOWLER Clock Winding Mechanism Patent Print |
| 1933 BROWNING Trigger Mechanism Patent Print Art |
| 1933 BARROWS Cushioning Mechanism Patent Print |
| 1933 BOOTH FRANK Timing Mechanism Patent Print |
| 1933 TAYLOR HOWARD Brake Mechanism Patent Print |
| 1933 BLUNT JAMES Brake Mechanism Patent Print |
| 1933 AURIEN RAY Brake Mechanism Patent Print Art |
| 1933 PAUL Horological Mechanism Patent Print Art |
| 1933 UNITED Driving Stopping Mechanism Art Print |
| 1933 DALY JOHN Register Mechanism Patent Print |
| 1933 SMITH Snap Actuating Mechanism Patent Print |
| 1933 H Thread Control Mechanism Patent Print Art |
| 1933 ROSS Cloth Forming Mechanism Patent Print |
| 1933 WHITRIDGE Draft Gear Mechanism Patent Print |
| 1933 RICHTER Calendar Mechanism Patent Print Art |
| 1933 JAEGER Oar Operating Mechanism Patent Print |
| 1933 TREIN Time Control Mechanism Patent Print |
| 1933 SMITH JAMES Pumping Mechanism Patent Print |
| 1933 SCHMOHL Car Dumping Mechanism Patent Print |
| 1933 WEIS Looper Driving Mechanism Patent Print |
| 1933 MCWHIRTER Step Mechanism Vehicles Art Print |
| 1933 SOLOMON COCHIN Watch Mechanism Patent Print |