Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 5713715 | Measuring flask A measuring flask 10 is described for use in a mine shaft assembly. The measuring flask 10 includes a body 12, a discharge opening 25, a door 24, and a pressurised fluid actuated door locking mechanism 40. The body 12 defines a storage chamber having a sl... | 02/03/1998 |
| 4525070 | Rotary mixing apparatus A mixing apparatus for dry or wet ingredients is disclosed, which comprises an upwardly inclined trackway, and a mixing container mounted for rolling movement along the trackway. The trackway includes a scale at the lower end which permits the container a... | 06/25/1985 |
| 4270286 | Tool suspension with supply means for hydraulic medium A suspension for a replaceable hydraulically operable tool attachment on the tool holder excavator or crane comprises a fork member pivoted to the tool holder by pivot pins which contain bores to establish hydraulic communication between fluid supply and ... | 06/02/1981 |
| 4072240 | Textile bobbin hoist A bobbin hoist powered by an air cylinder has a skip for holding, lifting, tilting, and dumping bobbins and is provided with skip guiding tracks to give substantially constantly increasing hoisting cable pull during tilting and dumping. A hinged door over... | 02/07/1978 |
