GB2500910A - Chamfer to guide inclined nailing or drilling - Google Patents

Abstract

A nylon disc has a conical aperture formed on one face. The disc is attached to a circular plaster or latex sheet which can adhere to a work piece. The point of a nail or drill can be engaged with the aperture prior to being driven through the disc and sheet, and into the work piece. This prevents the drill or nail slipping when driven in at an angle, or into a curved surface. The disc and sheet also protect the surrounding surface of the work piece. The nylon is transparent so the work piece can be seen during use. The deepest point of the hole at the end of its taper is at the same height as the base of the disc.

Description

Title of Invention

The Chamferspot Backciround of Invention Often, when drilling or hammering into a straight or curved surface it is difficult to keep the drill bit (or tip) of the drill straight when in motion, or the nail in position whilst hammering. This is due to the angle of the drill bit! nail and the straightness, curve or material of the surface.

Without something to hold the drill or nail in place, such as a chamfer, damage to the surface can occur, or the drill or nail may not create a straight hole, or may fracture the surface. It can also cause the drill to break or chip, or the nail to bend.

Statement of Invention

This invention relates to an aid to drilling a direct hole into a surface, and hammering a nail straight into a surface.

This invention creates an external chamfer between the drill or nail and the surface to be drilled or hammered. A chamfer is a beveled edge connecting two surfaces. If the surfaces are at right angles, the chamfer will typically be symmetrical at 45 degrees This invention is a design that externally creates a chamfer that can hold and guide the drill or nail to the exact direction into a surface.

Advantages This invention is a very simple and very cheap design to manufacture This invention can be used by everyone, from DIY to professionals Can be used on straight or curved surfaces Can extend the life of a drill piece Does not damage surfaces, drill pieces or nails

Introduction to Drawings

Figure 1 shows a 3D image of the invention Figure 2 shows the invention from the side Figure 3 shows the invention from above Figure 4 shows the outer section Figure 5 shows the inner section Figure 6 shows the chamfer in the middle of the inner section

Detailed Description

The invention is designed to create an external chamfer between the drill bit (tip) and the surface to be drilled. It does this by holding the angle of the drill bit (tip) straight and steady while sticking directly to the surface to be drilled. It cushions the drill piece into position and stops the drill bit from wobbling or entering the surface at the wrong angle when in use. The design does not damage the drill or surface in any way.

This invention (figure 1,2,3) is made of two types of material.

The larger circular outer section (figure 4) is made of a clear plaster/latex material. One side is sticky, this will grip to the surface to be drilled and hold the product in place securely. The other side will hold the inner section so it will not move when the drill bit (tip) is inserted into the chamfer.

The inner 3D circular section (figure 5) is made of a solid clear nylon material. This material will not bend or go out of shape. The indentation I chamfer (figure 6) in the middle is where the drill bit (tip) is placed and held securely and centred. When drilled the material will not damage the drill bit or surface in any way. It is a clear nylon so the surface to be drilled can be seen and placed exactly where it needs to be drilled through the invention.

The outer section (figure 4) dimensions can be 40mm diameter, 0.1mm thick the inner section (figure 5) dimensions can be 10mm diameter, 0.3mm thick.

The indentation (figure 6) in the inner section dimensions can be (a) 0.2mm at the top, 0.3mm deep (b) 0.0mm point Claim