Quotables
"What, sir, would you make a ship sail against the wind and currents by lighting a bonfire under her deck? I pray you, excuse me, I have not the time to listen to such nonsense."
Napoleon Bonaparte ; When told of the Robert Fulton steamboat
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| Number | Title | Issue Date |
| 7267304 | Railroad yard switch machine A railroad switch machine which is normally operated by an electric motor but which may be manually operated without causing rotation of the power shaft of the electric motor to enable the switch machine to move the switch points without having to overcome the brake... | 09/11/2007 |
| 7152830 | Switch machine improvements A control mechanism for moving switch points on a railroad track, having a drive screw driven by a motor, a traveling block moving along the drive screw to position the switch points, an end stop on the drive screw for limiting movement of the traveling block, a han... | 12/26/2006 |
| 6648276 | Drop down lug for railroad switch application An improved railroad switch apparatus includes a switch machine, a locking system lug, a detection system lug, a lock rod connecting rod, a point detector connecting rod, and a pair of movable rails. The locking system lug is mounted on a pair of lock rod... | 11/18/2003 |
| 6568641 | Electrically operated railroad switch machine A switch machine for moving railroad switch points. The switch machine includes a switch stand adapted to be connected to the railroad switch points. The switch stand includes a rotatable hub which is selectively rotatable to throw the switch points. A ro... | 05/27/2003 |
| 5494242 | Low profile switch machine with hand throw or motor throw selector device A switch machine for railroad tracks is provided having a low vertical profile without increasing the axial length of existing switch machines. Also, the capability of being operated by an electric motor, hand crank or hand throw operation has been retain... | 02/27/1996 |
