Woodworking – Shaping machine – Vertical spindle
Patent
1997-07-30
1998-10-20
Bray, W. Donald
Woodworking
Shaping machine
Vertical spindle
1441341, 1441361, 1442042, 1442532, 1442535, 1442861, B27C 502, B27B 100, B25H 100
Patent
active
058232397
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
This invention relates to work benches for cutting pieces of wood, plastic and other material. More particularly the invention relates to a work bench equipped with a jig or fence having means by which a piece of work may be maintained in a wide variety of different positions. Such means facilitates the cutting of the work piece. The invention also relates to a work bench having a router mounted for sliding beneath a stationary table top.
It is well known to provide work benches with jigs or fences to maintain the correct positional relationship between a piece of work and a cutting tool. U.S. Pat. No. 3,172,417 to Zulkowitz et al and U.S. Pat. No. 4,679,606 to Bassett both show jigs or fences which may be moved to adjust the position of a piece of work for shaping of its edges or for routing. The jigs or fences of such work benches are usually intended to guide a piece of work as it is moved through a cutting tool such as a saw or a router.
A shortcoming of many such work benches is that they usually are not capable of maintaining a piece of work in the correct position throughout the cutting operation. During cutting the piece of work may deviate from the correct position by reason of warps, knots and other imperfections in the work piece. Heavier work pieces are especially difficult to guide accurately through the cutter because they are awkward to handle. An inaccurate cut is the usual result where the work piece deviates from the correct position during cutting and this result is particularly troublesome where the cutter is a router.
Where a router is used to form dovetails and pins in order to connect two work pieces together, the cuts must be at precise angles for the two pieces to fit together properly. If the angles are not correct, even slightly so, the joints may be too tight for easy assembly or they may be too loose and wobbly.
Another shortcoming of known work benches is that the jig or fence with which many are equipped are capable of only limited movement. Only with difficulty can dovetails and pins be formed by means of some such fences and in the case of others it is not possible to form such cuts at all.
SUMMARY OF THE INVENTION
It is an object of this invention, according to one of its aspects, to provide a work bench having means for maintaining a piece of work stationary during the cutting operation. The cutter but not the work piece moves during the cutting operation and many of the problems encountered when the work piece is moved are eliminated.
An object of another aspect of the invention is to provide a work bench having a jig or fence which may be maintained in a wide variety of different positions. The work bench is as a result particularly suitable for cutting dovetails and pins or tenons and mortises in a piece of work.
The first object is accomplished by a router table including: a table having a stationary planar upper surface and an elongated slot formed therein; a fence which is adjustably mounted on the upper surface and to which a work piece may be clamped such that the work piece may be adjustably positioned on the upper surface and maintained immovable in a desired position during the routing operation; a carriage slideably mounted beneath the upper surface; and a router mounted to the carriage and having a bit which extends through the slot and projects upwardly of the upper surface to engage the work piece, the bit cutting out an elongated groove in the immovable work piece as the carriage slides beneath the upper surface.
The second object is accomplished by a fence having a base which is rotatably mounted to the upper surface of a work bench table; first adjustment means for selectively preventing the base from rotating with respect to the upper surface; a bracket slideably mounted to the base and having an elongated wall to which the work piece may be clamped; and second adjustment means for selectively fixing the bracket to the base for preventing the bracket from sliding relative thereto.
DESCRIPTION OF THE DRAWINGS
The router
REFERENCES:
patent: 3060981 (1962-10-01), Hofmann
patent: 3096798 (1963-07-01), Pugsley
patent: 3134411 (1964-05-01), Broyles
patent: 3172417 (1965-03-01), Zulkowitz et al.
patent: 3604484 (1971-09-01), Viljoen
patent: 3692075 (1972-09-01), White
patent: 4056137 (1977-11-01), Morasch et al.
patent: 4292870 (1981-10-01), Mericle
patent: 4306598 (1981-12-01), Peot
patent: 4524812 (1985-06-01), Murphy
patent: 4655445 (1987-04-01), Morse
patent: 4679606 (1987-07-01), Bassett
patent: 4858664 (1989-08-01), Wright
patent: 4995435 (1991-02-01), Godfrey
patent: 5024257 (1991-06-01), Lloyd
patent: 5094279 (1992-03-01), Dickey et al.
Bray W. Donald
Jessem Products Limited
LandOfFree
Work bench does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Work bench, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Work bench will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-234428