Devices and Systems for Controlling Travel of a Railcar

A device for controlling travel of a railcar along a set of rails, the railcar comprising wheels having treads that ride on the rails, the device comprising:

• a railcar stop that is selectively movable between a first position wherein the railcar is free to travel along the rails and a second position wherein the railcar stop engages the tread of at least one of the wheels and thereby prevents travel of the railcar in at least one direction along the rails;
• wherein each of the wheels have flanges that extend radially outwardly from the treads and wherein when the railcar stop is in the second position, at least one flange of the wheels blocks the railcar stop from moving into the first position.

A device for controlling travel of a railcar along a set of rails, the railcar comprising wheels having treads that ride on the rails, the device comprising:

• a railcar stop that is selectively movable between a first position wherein the railcar is free to travel along the rails and a second position wherein the railcar stop engages the tread of at least one of the wheels and thereby prevents travel of the railcar in at least one direction along the rails;
• wherein the railcar stop is configured to move generally parallel to the rails in the first and second directions upon engagement and disengagement with one or more of the treads of the wheels.