Adjustable featherboard
US4476757A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 2, 1982 |
| Grant date | Oct 16, 1984 |
| Priority date | — |
| Expiry date | Sep 2, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/745
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An adjustable featherboard is used with a table saw or other tool of the type having a substantially flat saw table having at least one groove formed in its surface and a blade slot adjacent and parallel to the groove, and consists of a body having a plurality of angularly extending elongated fingers and a pair of transverse and substantially parallel slots therethrough; a pair of mounting bolts, each positioned in a different one of the slots and having a threaded shank, a flared lower end, and a knob threaded on an upper end of the shank; and an expansion bar extending beneath the slots and sized to engage slidably the groove in the saw table and having a pair of bores therethrough which receive the flared ends of the mounting bolts. Rotation of the knob in a first direction clamps the body between the knob and the bar and draws the flared ends upwardly in the bores so that the bar expands transversely within the groove to secure the featherboard to the groove; reverse rotation of the knob permits the expansion bar to contract to its unexpanded width, thereby permitting removal of the featherboard from the saw table.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.