Dual rock cutter wheel trencher
AssigneeH. B. Zachry Company
InventorEdward N. Marten
Life of this patent
Estimating the term…
Abstract
Apparatus and method for digging deep vertical walled trenches in solid rock such as limestone. The apparatus comprises a base supported by four crawler type traction means. A turntable is translatably carried by the base and in turn supports a prime mover and a pivoted extendable boom including means for rotating the boom about its longitudinal axis. A dual cutter is supported on the end of the thus articulated boom and is assembled so that the outermost cutter teeth are wider than any other part of the boom assembly. The trenching method includes cutting a pair of narrow slots by means of the rock saws and then removing material between the slots.
Claims10
Apparatus for cutting a trench in rock comprising:
- a supporting base,
- traction means carried by and movably supporting said base,
- a turntable carried by said base by means for translatably moving said turntable relative to said base,
- an extendable boom pivotally supported by said turntable, whereby said boom may pivot about a horizontal axis,
- means for rotating said boom about its longitudinal axis, and
- a double rock cutter carried by said boom, said rock cutter including a pair of rock cutter wheels attached to a shaft, said shaft having a length, and said boom having a width less than the maximum distance between outside teeth on said cutter wheels.
Apparatus for cutting a trench in rock comprising:
- a generally rectangular base having at least a pair of cross rails,
- four traction means, each attached to a corner of said base and movably supporting said base,
- a turntable supported on said cross rails by roller means for providing lateral movement of said turntable along said cross rails,
- an extendable boom pivotally supported by said turntable, whereby said boom may pivot about a horizontal axis,
- means for rotating said boom about its longitudinal axis, and
- a double rock cutter carried by said boom, said rock cutter including a pair of rock cutter wheels attached to opposite ends of a shaft, said shaft having a length, and said boom having a maximum width less than the maximum distance between outside teeth on said cutter wheels.
Dependencies are inferred from the claim text.