US 4,556,200 A · Re-railing jack

Abstract

A re-railing jack for returning derailed track vehicles to the track includes a threaded jack screw pivotally mounted in a ground supported swivel base. A jack housing is longitudinally movable on the jack screw in response to rotation of the jack screw by a ratchet which engages the jack screw. The jack housing includes a first portion threadedly engaged to the jack screw and a second integral portion positioned in the coupler pocket which normally receives the automatic coupler of the track vehicle. The housing second portion is retained in the coupler pocket by the same pin which holds the coupler in place. The pin extends through transverse slots of the jack housing permitting the housing to pivot within the coupler pocket about the point of connection of the housing to the vehicle. The jack is thus safely connected to the vehicle in an efficient manner which facilitates lifting and combined downward lateral movement of the vehicle back on to the track.

Claims12

Dependent claims

A lifting jack comprising,

a jack housing,
said jack housing having an internally threaded portion and a support portion integral with said housing,
a receiver fixedly positioned to receiver said jack housing support portion,
means for removably connecting said jack housing support portion to said receiver to permit pivotal movement of said jack housing support portion relative to said receiver,
said means for removably connecting said jack housing support portion to said receiver includes transverse slotted means in said support portion,
a connecting pin carried by said receiver and extending through said transverse slotted means such that said pin connects said support portion to said receiver while permitting angular removement of said support portion in said receiver relative to said pin,
a threaded jack screw threadedly positioned in said jack housing internally threaded portion,
a swivel base for supporting said threaded jack screw, and
means for turning said threaded jack screw in a selected direction to raise and lower said jack housing while permitting pivotal movement of said jack housing support.

6 more elements

A lifting jack for a rail vehicle comprising,

a rail vehicle coupler receiver,
a jack housing having a first portion with an internally threaded bore and a second portion positioned in said rail vehicle coupler receiver for pivotal movement relative to said rail vehicle coupler receiver,
means for releasably connecting said jack housing second portion to said rail vehicle coupler receiver for pivotal movement of said jack housing,
said means for releasably connecting said jack housing second portion to said rail vehicle coupler receiver includes a pin member extending through said jack housing second portion and said rail vehicle coupler receiver,
means for receiving said pin member in said jack housing second portion to permit pivotal movement of said jack housing second portion through an angle relative to said pin member,
a threaded jack screw threadedly postioned in said jack housing internally threaded bore,
base support means for supporting said threaded jack screw for pivotal movement, and
power means for actuating rotation of said threaded jack screw in a selected direction to raise and lower said jack housing together with said rail vehicle coupler receiver.

5 more elements

Dependencies are inferred from the claim text.

Re-railing jack

Life of this patent

Re-railing jack

Life of this patent

Abstract

Claims12