Guide for angled and curved drilling

A drill guide for use with a drill bit and drill tool for drilling a hole into a wall through a wall floor plate comprising a curved guide tube having an upwardly directed inlet end and an upwardly directed outlet end, a support for holding said tube in drilling position against a wall spaced adjacent to the wall floor plate, a flexible shaft extending through said tube and mounting said drill bit on the end thereof adjacent the outlet end of said tube and a shank on the end of said shaft adjacent the inlet end of said tube for operative engagement with said drill tool, said support having a bifurcated shank defining spaced legs and a crossbar secured to one end of said legs with said tube being supported between said legs and stabilized by said crossbar whereby the operation of said drill tool rotates said drill bit and said tube guides and directs said bit through the wall floor plate to drill a hole from the exterior of said wall to the interior of said wall.

A T-shaped drill guide for use with a drill bit and drill tool for drilling a hole into a wall through a wall floor plate comprising a curved guide tube having an upwardly directed inlet end and an upwardly directed outlet end, a support for holding said tube in drilling position against a wall spaced adjacent to the wall floor plate, a flexible shaft extending through said tube and mounting said drill bit on the end thereof adjacent the outlet end of said tube and a shank on the end of said shaft adjacent the inlet end of said tube for operative engagement with said drill tool, said support having a pair of closely spaced legs and a crossbar secured to said legs at one end thereof, said tube being supported between and affixed to said legs and stabilized by said crossbar, whereby the operation of said drill tool rotates said drill bit and said tube guides and directs said bit through the wall floor plate to drill a hole from the exterior of said wall to the interior of said wall.

A drill guide for use with a ball mill for drilling a hole into a wall adjacent a floor and through a wall floor plate upwardly into the interior of the wall, comprising a curved guide tube having a curved central portion with an upwardly directed inlet end and an upwardly directed outlet end, a flexible shaft extending through said tube and mounting said ball mill on the end thereof adjacent the outlet end of said tube, and a shank on the end of said shaft adjacent the inlet end of said tube for operative engagement with said drill tool, said curved guide tube journaling said flexible shaft whereby said drill tool rotates said ball mill and said guide tube directs said ball mill in a curved drilling and milling operation.