Abstract: A tool for boring holes in soil includes an elongated tubular housing which has disposed through its length a bore having an upper opening coupleable to a vacuum source and a lower opening coupled to the bore of a ring-shaped bore head having circumferentially spaced apart cutting teeth protruding downwards from the bore head. A zig-zag shaped unclogger bar disposed coaxially through the bore head and rotated by a drive shaft disposed coaxially through the tubular and housing and protruding through a bearing in an upper end of the housing and driven by a rotary power source such as an electric motor fixed to the housing fragments lumps of clay or wet soil lodged in the bore of the housing, facilitating removal of soil and clay, which are severed by twisting the tool around its longitudinal axis by manipulating handle bars protruding from the upper end of the housing.

Abstract: A kit and method for preventing theft or wires interconnected within a pull box of the type which is mounted in a concrete wall or other such concrete body includes a steel cover plate having a downwardly protruding pair of locking tubes that receive the upstanding shanks of a pair of studs anchored in the concrete body. Each locking tube includes a spring which urges locking pins extending upwards from a floating locking plate through perforations through a fixed locking plate into bores in the lower face of a novel locking collar-nut threaded onto a stud to fasten it to the lid, thus locking the nut from being unthreaded from the stud.

Abstract: A tool for boring holes in soil includes an elongated tubular housing which has disposed through its length a bore having an upper opening coupleable to a vacuum source and a lower opening coupled to the bore of a ring-shaped bore head having circumferentially spaced apart cutting teeth protruding downwards from the bore head. A zig-zag shaped unclogger bar disposed coaxially through the bore head and rotated by a drive shaft disposed coaxially through the tubular and housing and protruding through a bearing in an upper end of the housing and driven by a rotary power source such as an electric motor fixed to the housing fragments lumps of clay or wet soil lodged in the bore of the housing, facilitating removal of soil and clay, which are severed by twisting the tool around its longitudinal axis by manipulating handle bars protruding from the upper end of the housing.

Abstract: A kit and method for preventing theft or wires interconnected within a pull box of the type which is mounted in a concrete wall or other such concrete body includes a steel cover plate having a downwardly protruding pair of locking tubes that receive the upstanding shanks of a pair of studs anchored in the concrete body. Each locking tube includes a spring which urges locking pins extending upwards from a floating locking plate through perforations through a fixed locking plate into bores in the lower face of a novel locking collar-nut threaded onto a stud to fasten it to the lid, thus locking the nut from being unthreaded from the stud.

Abstract: A kit and method for preventing theft of wires interconnected within a pull box includes a steel cover plate having a downwardly protruding cup which has a central perforation in its base that receives the upstanding shank of a J-bolt anchored in concrete poured into a bore made in the floor of a pit holding the pull box. A template plate inserted into the open upper end of the pullbox has a central hole which receives the shank of the J-bolt while the concrete is hardening to maintain the pull box centered on the J-bolt, removed after the concrete has hardened, and replaced by the cover plate which is secured in place by tightening an oval external cross-section security nut onto the upper surface of the cup base plate using a novel socket wrench.