Apparatus for lifting the bolster of a railway car truck
AssigneeTecnobec, Inc.
InventorGerard Belanger
Life of this patent
Estimating the term…
Abstract
The apparatus comprises: an elongate rigid member of sufficient length so as to sit transversely on a pair of rails; a pair of spaced hydraulic jacks fixedly mounted to the rigid member and each provided at its head portion with a fitting element adapted to engage the under portion of the bolster of a railway car truck; and hydraulic conduits connecting the jacks to an external power source; the apparatus is inserted sidewise between the wheels of the car truck and, once positioned on the rails, it is manually rotated at one end to bring the jacks in vertical alignment with the bolster; the power source is energized to exert a lifting pressure on the bolster so as to free the suspension springs of the car truck from the weight of the car.
Claims9
An apparatus for lifting the bolster of a railway car truck mounted on rails so as to remove the weight of said car from other parts of said truck, comprising:
- an elongate rigid member having sufficient length so as to sit transversely on both rails;
- a pair of hydraulic jacks each having a lower portion thereof fixedly secured to said rigid member, said jacks being spaced from one another on said rigid member a distance corresponding generally to the distance separating said rails;
- fitting means mounted at the upper portion of each said jack for engaging said bolster;
- conduit means mounted to said rigid member for hydraulically connecting said jacks to an external power source;
- means on said rigid member allowing said rigid member to be rotated about an axis parallel to its longitudinal axis whereby, after a portion of said rigid member containing both said jacks is inserted sidewise beneath said bolster to lay on both rails with said jacks extending in a plane substantially parallel with a plane that includes said rails, said rigid member may be rotated to bring said jacks in vertical alignment with said bolster for jacking engagement therewith.
Dependencies are inferred from the claim text.