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 |
| 6227123 | Railroad car pick-up shoe A wayside electrical pick-up shoe for operating the discharge, or the like, of a railcar includes a spring biased electrical contact pivotally attached to a base plate with a mechanism for electrically insulating the base plate from the electrical contact... | 05/08/2001 |
| 5983804 | Conveyor device running on rails A rail-travelling conveyor device to be advanced supported by two mutually parallel rails, comprising: a carrier frame, a load compartment substantially firmly connected with the carrier frame, said load compartment being arranged at least partly below th... | 11/16/1999 |
| 5445080 | Free ranging monotrack sortveyor with selectively lockable article carrying tilt tray The invention is a monotract conveyor which has a pivotal tray which is selectively lockable to either pivot to either side of a track which the conveyor runs on, or to stay in an upright position. The tray is mounted to an upper portion of the conveyor u... | 08/29/1995 |
| 4422485 | Integrated mobile tank-servicing system An integrated mobile tank- servicing system for filling, transferring, etc. a flowable medium from one or more tanks; said system having a mobile frame with an adjustable duct(s) for placement in the orifice of a tank and an adjustable walkway associated ... | 12/27/1983 |
| 4339222 | Door locking mechanism for hopper car doors A door locking mechanism for a hopper door includes a latch arrangement which is incorporated into a door closure mechanism activated by a side-of-track camming mechanism. The arrangement includes an actuating device responsive to car wheel engagement and... | 07/13/1982 |
| 4280778 | Hopper car door operating mechanism A railway hopper car includes laterally positioned bottom dump discharge openings and doors which are locked in a closed position by a latching mechanism actuated from a ground-mounted trip lever. After the car has been dumped it is moved adjacent to a gr... | 07/28/1981 |
| 4223941 | Truck box and cover assembly A truck box includes a planar base and curved side walls and is enclosed at the ends by a front panel at one end and by a tailgate assembly at the other. A pair of curved clamshell type covers are pivoted to the front panel and are spaced from the outer s... | 09/23/1980 |
| 4153168 | Automatic hopper door opener The automatic controlling of a hopper door of a moving dump vehicle is actuated in sequence by a wayside mechanical trip and subsequently by a wayside inductive signal. An automatic preliminary check is made of the control system immediately upon actuatio... | 05/08/1979 |
| 4102448 | Conveying apparatus including tilting support structures A conveyor tray is longitudinally tilted downwardly in the direction of the movement with a front stop wall having a center notch to support the back of a load applied to the preceding tray. Each tray is also split or divided longitudinally into two tray ... | 07/25/1978 |
