Pivoted fence with locating post
US5881785A · kind A · utility
Inventor
Key dates
| Filing date | Nov 10, 1997 |
| Grant date | Mar 16, 1999 |
| Priority date | — |
| Expiry date | Nov 10, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23Q3/005
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A router and other cutting tools with a fixed center such as drills, shapers, milling machines, etc., used for cutting wood, metal or other materials, is provided with a fence mechanism for either a table or the base of a portable tool, for rapid and easy settings of the fence with respect to the center of the cutting tool. This is accomplished by a pivot mounting of the fence on a table or on a portable tool base, with respect to a block pivoted to the table or tool base, wherein the center of the pivot for the block and the center for the pivot for the fence are on opposite sides of the cutting tool and located on a line which passes through the tool center and the respective pivot locations. The desired spacing of the fence to the tool can be achieved using accurate spacers between the fence and the block, even with the tool being mounted in place. When used on a table, a curved slot in the table top, of predetermined shape and location with respect to the tool center, can be provided to receive a follower pin extending from the fence and function to move the fence in fence centered motion. The disclosure teaches how to develop such a curved guiding slot.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.