Implements or apparatus for applying pushing or pulling force – Pipe or rod jack – Tie rod tensioner
Patent
1976-01-14
1977-04-05
Smith, Al Lawrence
Implements or apparatus for applying pushing or pulling force
Pipe or rod jack
Tie rod tensioner
E21B 1900
Patent
active
040158217
ABSTRACT:
An assembly for tensioning cables on a percussion hammer or the like wherein each cable has a threaded end fitting. The assembly includes a lock nut threadably mounted on the end fitting for locking the end fitting relative to the hammer. Also included in the assembly is a jacking sleeve threadably mounted on the end of the cable fitting and adjacent to the nut. A hydraulic jack body is mounted around the jacking sleeve and nut and abuts a portion of the hammer at one end thereof. The jack body includes a hydraulic cylinder and piston wherein the piston is mechanically connected to the jacking sleeve by a split ring. Movement of the piston due to the introduction of hydraulic fluid into the chamber imparts a corresponding movement to the jacking sleeve resulting in tensioning of the cable.
REFERENCES:
patent: 3115332 (1963-12-01), Singleton et al.
patent: 3230799 (1966-01-01), Maciulaitis
patent: 3815874 (1974-06-01), Jones
patent: 3938427 (1976-02-01), Warrington
Smith Al Lawrence
Vulcan Iron Works Inc.
Watson Robert C.
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