초록 ▼

A railroad frog has either a cast or rail-built point, resting on a baseplate which is fastened to ties. A pair of heel rails are attached to the point, to the ties and to traffic rails. A pair of movable wing rails extend from the toe of the frog to a location adjacent the point of the frog. At the

A railroad frog has either a cast or rail-built point, resting on a baseplate which is fastened to ties. A pair of heel rails are attached to the point, to the ties and to traffic rails. A pair of movable wing rails extend from the toe of the frog to a location adjacent the point of the frog. At the frog point an open wing rail forms a flangeway with the point, while the other, closed wing rail cooperates with the point to form a continuous tread surface through the frog. The wing rails are alternately thrown between the open and closed positions by an actuator. A series of stops define the open wing rail position and act to hold down the open wing rail. The wing rails have hinges which allow them to move. The wing rails have a full rail base at the hinges. Adaptor plates allow use of the frog on concrete ties.

대표청구항 ▼

In a railroad frog of the type having movable wing rails hinged for lateral movement at a predetermined point and actuated by a throw rod which extends in a horizontal direction beneath the rails and transverse to the vertical axes of the wing rails, the improvement comprising swivel clips for pivot

In a railroad frog of the type having movable wing rails hinged for lateral movement at a predetermined point and actuated by a throw rod which extends in a horizontal direction beneath the rails and transverse to the vertical axes of the wing rails, the improvement comprising swivel clips for pivotally connecting the throw rod to the wing rails and for resisting rolling action of the wing rails about their bases, the swivel clips comprising: a bar connected to a wing rail; an arm connected to the bar and extending downwardly to a point adjacent the throw rod; a clevis attached to the arm; a pin block attached to the throw rod; and a pin pivotally connecting the clevis and pin block, said pin block having an elongated sleeve portion complementally fitting a portion of the throw rod beyond the connection of the arm to the throw rod in an axial direction of the throw rod.