Safety guard and dust and debris collector attachment for a drill

Abstract

Abstract This is an attachment for a drill that provides a safety guard, and a dust and debris catcher. It is in the form of a pair of frusto-cones, preferably of stainless steel, removably held in spaced apart relationship by a cylinder of similar material, providing space for the dust and debris to accumulate therebetween. The apexes of the frusto-cones are apertured to permit the drill-bit to extend therethrough. The frusto-cones and cylinder, in turn, are threadedly secured on a telescopic sleeve which is retractable into and between a pair of concentric sleeves, secured together, and mounted on a drill body, fitting over the drill hub, and removably secured to the drill body. A spring about the frusto-cones and the cylinder urges the frustocones outwardly and permits the frusto-cones and telescopic sleeve to retract as the drill-bit penetrates the material being drilled. The outer concentric sleeve is apertured to permit ready retraction and prevent pressure building up between the concentric sleeve, and permit suction through the frusto-cone apertures as the drill is removed from the drilled area, thus providing a vacuum cleaner effect about the drill-bit to keep the dust within the frusto-cones as the drill-bit is removed. To empty the dust, telescoping the male sleeve back and forth will act like a blow-gun and blow out the dust and debris. A drill-bit depth-limiting and depth gauge for the drill, and in another form, a drill depth measuring gauge on the outer surface of the telescopic sleeve, is provided. Should the drill-bit break while in use, the broken parts will be trapped within the frustocones or concentric sleeves, preventing any injury or damage. To prevent the dust from falling out, the drill-bit aperture in the outer cone when drilling downwardly, as in a floor, an internal flared pipe is detachably added to the inside of the outer frusto-cone, just slightly larger than the drill-bit, and has a flared internal flanged lip so that the major part of the dust will collect within the outer cone.

Inventors

• 👤 H Hart

Bibliographic Details