Edward R. Langfield - Glen Rock NJ James L. Hile - Montville NJ David L. Hird - Pompton Lakes NJ
Assignee:
Elco International - Elmwood Park NJ
International Classification:
B28D 126
US Classification:
299 37
Abstract:
A scabbler apparatus having a conventional reciprocated rod is provided with a bit secured to a shank member. A compression spring is adapted to urge the shank and rod upwardly while motive means is provided to drive the rod, shank and bit toward the surface of concrete, rock and the like and against the bias of the spring. A protective retainer and an exclusionary means is provided. This exclusionary means may be a boot, a wiper ring and with or without a one-way valve means. The compression spring is retained at its lower end by a support shelf, usually an inwardly formed flange of the retainer. A washer or ring engages or is carried by the shank of the bit and engages the top end of the spring to urge the shank, the attached bit and the reciprocated rod upwardly.
Hydraulically Actuated Tool For Mechanically Splitting Rock-Like Material
Edward R. Langfield - Glen Rock NJ James L. Hile - Montville NJ David L. Hird - Pompton Lakes NJ
International Classification:
E21C 3702
US Classification:
299 22
Abstract:
A rock splitter tool is hydraulically actuated by a piston which moves a tapered wedge between feathers mounted at one end in a retaining means. The feathers and wedge, as an assembly, are inserted into a predrilled hole and the wedge is driven forward by the hydraulic piston to move the feathers outwardly to split the rock. The present invention is directed toward providing a hydraulically moved wedge in which the feathers and wear plate portions are retained by a clam shell clamp and retainer which are readily separated and removed to enable an inspection and/or replacement of any damaged apparatus. This clam shell clamp enables existing apparatus to be converted. Auxiliary apparatus utilizing a jack hammer device is also shown as is a hydraulic pulsation developing rotary valve which is adapted to cycle the wedge as it is moved forwardly.
Hydraulically Actuated Tool For Mechanically Splitting Rock-Like Material
Edward R. Langfield - Glen Rock NJ James L. Hile - Montville NJ David L. Hird - Pompton Lakes NJ
Assignee:
Edward R. Langfield - Glen Rock NJ
International Classification:
E21C 3704
US Classification:
299 22
Abstract:
A rock splitter tool is hydraulically actuated by a piston which moves a tapered wedge between feathers mounted at one end in a retaining means. The feathers and wedge, as an assembly, are inserted into a predrilled hole and the wedge is driven forward by the hydraulic piston to move the feathers outwardly to split the rock. The present invention is directed toward providing a hydraulically moved wedge in which the feathers and wear plate portions are retained by a clam shell clamp and retainer which are readily separated and removed to enable an inspection and/or replacement of any damaged apparatus. This clam shell clamp enables existing apparatus to be converted. Auxiliary apparatus utilizing a jack hammer device is also shown as is a hydraulic pulsation developing rotary valve which is adapted to cycle the wedge as it is moved forwardly.
David Gwin (1975-1979), James Jordan (1952-1956), Rebecca Schultz (1997-2001), Dave Hird (1994-1998), Jody Simpson (1977-1981), Linda van Sant (1969-1973)