Lens drill guide
AssigneeThe Hilsinger Company
InventorCharles MacIntosh, Jr.
Life of this patent
Estimating the term…
Abstract
A drill guide apparatus for lens workpieces, having a substantially C-shaped base and threaded screw member, is provided. The drill guide apparatus includes a threaded aperture through the C-shaped base member for receiving the threaded screw member to clamp the drill guide apparatus to a lens workpiece. The screw member includes an axial bore through its entire length. An exit aperture is provided on an opposing side of the C-shaped base member for aligning the drill guide apparatus on a pre-marked spot on the lens workpiece. With the drill guide apparatus clamped in place, accurate drilling can be achieved without damaging the workpiece.
Claims5
A drill guide apparatus, comprising:
- a substantially C-shaped base member configured for embracing a workpiece to be drilled with a first side and an opposing second side;
- said C-shaped base member having a first leg and a second leg;
- said first leg including a threaded aperture therethrough;
- a screw member, having threading thereon, threadably engageable with said first leg via said threaded aperture;
- said screw member including an axial bore extending completely through said screw member along its longitudinal axis;
- transparent intermediary material disposed between said workpiece and said drill guide apparatus;
- and
- wherein said screw member is adjustably engageable with a first side of said workpiece and said second leg being engageable with a second side of said workpiece to accurately clamp said drill guide apparatus to said workpiece in preparation for drilling a hole therethrough via said axial bore.
A drill guide apparatus, comprising:
- a C-shaped body having a first leg and a second leg;
- said first leg including a threaded aperture therethrough;
- a threaded screw member, having an axial bore therethrough, threadable through said threaded aperture;
- a substantially transparent protective material disposed between said drill guide apparatus and said workpiece;
- and
- whereby said C-shaped body is clampable to a workpiece via said threaded screw to permit accurate controlled hole drilling in said workpiece via said axial bore in said thread screw member.
Dependencies are inferred from the claim text.