Adjustable precision guard for powered hand tools,such as grinders,buffers or the like

Abstract

Abstract ADJUSTABLE PRECISION GUARD FOR POWERED HAND TOOLS SUCH AS GRINDERS, BUFFERS AND THE LIKE TO SMOOTH OUT ROUGH SURFACES OR REDUCE RAISED AREAS WHILE PREVENTING CONTACT BETWEEN THE GRINDER OR BUFFER WHEEL AND SURFACES ADJACENT THE WORK AREA WHICH IS OF PARTICULAR IMPORTANCE WHERE DIMENSIONAL PRECISION IS REQUIRED OF THE FINAL PRODUCT, INCLUDING A LONGITUDINALLY SLOTTED GUARD SURROUNDING THE GRINDING OR BUFFING WHEEL AND ADJUSTABLY ATTACHED TO A BRACKET, THE BRACKET BEING SUPPORTED ON A TUBULAR BODY MOUNTED ON THE TOOL TO PERMIT COARSE ADJUSTMENT OF ITS VERTICAL RELATIONSHIP WITH RESPECT TO THE PEIPHERY OF THE WHEEL TO REGULATE CRUDELY THE EXTENT OF OUTWARD PROJECTION OF THE WHEEL''S SURFACE RELATIVE TO THE GUARD AND BEING MICROMETRICALLY ADJUSTABLE ON THE TUBULAR BODY FOR MICROMETRIC ADJUSTMENT OF SAID OUTWARD PROJECTION. THE GUARD IS ALSO ROTATIVELY ADJUSTABLE BY A CAMMING ARRANGEMENT TO INSURE PROPER ALIGNMENT OF ITS SLOT AND THE AXIS OF THE WHEEL. THE MICROMETRIC ADJUSTMENT MEANS IS LOCATED WITH IN THE TUBULAR BODY. IT INCLUDES WEDGE MEMBERS, ONE OF WHICH IS MOVABLE GUIDELY IN A AXIAL DIRECTION OF THE TOOL SHAFT IN RECIPROCAL DIRECTIONS RELATIVE TO THE OTHER AS REQUIRED BY MEANS OF A MANIPULATING SCREW TO THE OTHER AS RETHE BRACKET AND THUS THE GUARD WITH FIND ADJUSTMENT CONTROL RELATIVE TO THE WHEEL. MICROMETRIC ADJUSTMENTS OF THE POSITION OF THE GUARD SLOT RELATIVE TO THE WHEEL IS PROVIDED BY THE COMBINATION OF THE THREAD PITCH OF THE MANIPULATING SCREW AND THE PITCH OF THE ENGAGING SURFACES OF THE WEDGES SO THAT THE POSITINAL RELATIONSHIP BETWEEN THE GUARD AND WHEEL MAY BE CONTROLLED UP TO 0.0001". LOCKING MEANS FOR THE WEDGES AND BRACKET AND GUARD IN ANY POSITION OF ADJUSTMENT IS PROVIDED.

Inventors

• 👤 John O Emmerson
• 👤 Charles L Morris

Bibliographic Details