Granted Patent B2

US 7,353,757 · App. 11/283,652 · Granted Apr 8, 2008

Abstract

Claims (32)

1. A toggle slide-plate for use in a spike-pulling machine, wherein said toggle slide-plate is configured for supporting the movement of a pair of pivotable arms each having a spike-pulling claw configured for removing a spike from a railroad tie, the pair of pivotable arms being configured for moving in a direction perpendicular to a longitudinal axis of a rail and said toggle slide-plate being configured for preventing twisting of the pair of pivotable arms, said toggle slide-plate comprising:

a mid-plate having a first end and a second end;

a first endplate connected to said first end;

a second endplate connected to said second end; and

a wear pad secured to each of said first endplate and said second endplate.

2. The slide-plate of claim 1 wherein said mid-plate further includes a gallery opening and a lubricant gallery configured for receiving and providing a passageway for a lubricant.

3. The slide-plate of claim 1 wherein said first endplate is connected to said mid-plate at a center of said first endplate, and wherein said second endplate is connected to said mid-plate at a center of said second endplate.

4. The slide-plate of claim 1 wherein both said first endplate and said second endplate are octagonal in shape when viewed in plan.

5. The slide-plate of claim 1 wherein both said first endplate and said second endplate include a pair of openings, wherein each of said openings is configured for receiving a shaft.

6. The slide-plate of claim 5 wherein said pair of openings on said first endplate are configured for alignment with said pair of openings on said second endplate.

7. The slide-plate of claim 2 wherein both said first endplate and said second endplate further include a groove portion configured for alignment with said mid-plate.

8. The slide-plate of claim 7 wherein each said wear pad is configured to be removably secured to each of said first and second endplates.

9. The slide-plate of claim 7 wherein each said groove portion includes at least one hole and a lubricant opening configured for alignment with said lubricant gallery.

10. The slide-plate of claim 9 wherein each said wear pad includes at least one throughbore that is configured for alignment with each said groove portion hole and a lubricant passageway configured for alignment with said lubricant opening.

11. The slide-plate of claim 10 wherein both said first endplate and said second endplate further include at least one fastener configured for insertion through each said groove portion hole and each said wear pad throughbore, wherein said fastener is configured for securing each said wear pad to either said first endplate or said second endplate.

12. The slide-plate of claim 1 wherein each said wear pad is configured for sliding in a track located on said spike-pulling machine.

13. A toggle slide-plate for use in a spike-pulling machine and configured for facilitating the movement of a pair of pivotable arms each having a spike-pulling claw configured for removing a spike from a railroad tie, the pair of pivotable arms being configured for moving in a direction perpendicular to a longitudinal axis of a rail and said toggle slide-plate being configured for preventing twisting of the pair of pivotable arms, said toggle slide-plate comprising:

a mid-plate having a first end and a second end;

a first endplate connected to said first end;

a second endplate connected to said second end;

a groove portion located in a middle of both said first endplate and said second endplate, each said groove portion further including at least one hole;

a wear pad configured to be removably secured to each said groove portion, each said wear pad further including at least one throughbore corresponding with said at least one groove portion hole; and

a pair of fasteners configured for insertion into each pair of groove portion holes and wear pad throughbores, wherein each pair of said fasteners is configured for securing said first endplate or said second endplate to each said wear pad.

14. The slide-plate of claim 13 wherein both said first endplate and said second endplate include a pair of openings wherein each of said openings is configured for receiving a shaft.

15. The slide-plate of claim 14 wherein said openings in said first endplate are configured for alignment with said openings in said second endplate.

16. A wear pad for use in a toggle slide-plate in a railway spike pulling machine, the slide-plate configured for facilitating the movement of a pair of pivotable arms each having a spike-pulling claw configured for removing a spike from a railroad tie; the pair of pivotable arms being configured for moving in a direction perpendicular to a longitudinal axis of a rail, the toggle slide-plate being configured for preventing twisting of the pair of pivotable arms; and wherein the toggle slide-plate includes a mid-plate having a first end and a second end, the mid-plate including an lubricant gallery opening and a lubricant gallery configured for allowing the passage of a lubricant, a first endplate connected to the first end, a second endplate connected to the second end, and a groove portion located in a middle of both the first and second endplates, each groove portion further including at least one hole and a lubricant opening in alignment with the lubricant gallery, the opening configured for releasing the lubricant into the groove portion, said wear pad comprising:

a generally elongate body configured for insertion into the groove portion, said body having a height greater than a depth of the groove portion for sliding in a track defined by the machine;

at least one throughbore corresponding with the at least one groove portion hole, wherein said wear pad is configured to be secured to each groove portion; and

at least one lubricant passageway configured for receiving and dispersing the lubricant passed through the lubricant opening, the lubricant being configured for reducing friction between said wear pad and said track.

17. The wear pad of claim 16 wherein said wear pad body includes four planar, generally rectangular sides and two generally square-shaped ends.

18. The wear pad of claim 16 wherein at least one fastener is configured for insertion into each pair of wear pad throughbores and the groove portion holes, each said fastener being configured for securing said wear pad to the first endplate or the second endplate.

19. The wear pad of claim 16 wherein said wear pad is configured to be removably secured to said groove portion.

Assignments (14)