Portable derail
AssigneeWestern-Cullen-Hayes, Inc.
InventorJ. Joe Meyer
Life of this patent
Estimating the term…
Abstract
A portable derail for installation on railway track to prevent a railcar or locomotive from passing beyond a fixed point, thereby protecting workmen and equipment against accidents, the derail being lightweight and portable so a workman can carry it from one location to another, and yet being designed to function effectively under severe loading conditions and resist any tendency to slide along the rail when subjected to impact.
Claims14
A portable derail of a type which may be releasably secured to a rail for derailing a railcar, said derail including a shoe member which overlies the rail, and a derail bar which forces a rail wheel off to one side of the rail, the improvement comprising, in combination, set screw means carried on one side of the derail for engagement under the rail head on the field side thereof, movable clamp means carried on the other side of the derail for engagement adjacent the gage side of the rail head, said clamp means including a clamp plate having a head member, a rotatable screw for moving said clamp plate to a clamped position, said screw being generally horizontally disposed above the height of said rail head, said clamp plate head member being mounted on said rotatable screw, a manually operable handle for rotating said screw, and releasable locking means which in its locked position prevents rotation of said screw.
A portable derail of a type which may be releasably secured to a rail for derailing a railcar, said derail including a shoe member which overlies the rail, and a derail bar which forces a rail wheel off to one side of the rail, the improvement comprising, in combination, clamp means for clamping the derail adjacent the head portion of a rail, manually operable means for actuating said clamp means, and a vertical support member which projects downwardly from the derail and has a lower edge inclined downwardly toward the entry end of the derail, said inclined lower edge being engageable with a tie plate or rail anchor or crosstie to resist horizontal movement of said derail along the rail.
A portable derail of a type which may be releasably secured to a rail for derailing a railcar, said derail including a shoe member which overlies the rail, and a derail bar which forces a rail wheel off to one side of the rail, the improvement comprising, in combination, set screw means carried on one side of the derail for engagement under the rail head on the field side thereof, movable clamp means carried on the other side of the derail for engagement adjacent the gage side of the rail head, manually operable means for moving said clamp means to a clamped position, and a vertical support member connected to the underside of said shoe member so as to project downwardly from the gage side thereof and having a toothed lower edge inclined downwardly toward the entry end of the derail for engagement with a tie plate or rail anchor or crosstie to resist horizontal movement of said derail along the rail.
Dependencies are inferred from the claim text.