Router attachment for saw tables

• US 4,688,613 A
• Filed: 08/01/1986
• Issued: 08/25/1987
• Est. Priority Date: 08/01/1986
• Status: Expired due to Fees

• Current Assignee: Alvin L. Bassett
• Original Assignee: Alvin L. Bassett
• Inventors: Bassett, Alvin L.
• Primary Examiner(s): Bray, W. D.
• Application Number:
  US06/891,606
• Time in Patent Office: 389 Days
• Field of Search: 409/172, 409/182, 144/1 R, 144/1 F, 144/134 R, 144/134 A, 144/134 B, 144/134 D, 144/136 R, 144/136 C
• US Class Current: 144/136.1
• CPC Class Codes: B23Q 9/0078 the guide means being fixed to a support
• CPC Class Codes: B27C 5/04 Guide fences for work
• CPC Class Codes: B27C 5/10 Portable hand-operated wood-milling machines; Routers
• CPC Class Codes: Y10T 409/306048 with means to advance work or product
• CPC Class Codes: Y10T 409/306608 End mill [e.g., router, etc.]

Abstract

A router attachment for a saw table having a raised work-guiding fence at one edge thereof, the attachment consisting of a horizontal arm attachable at one end to the table at the edge thereof carrying the fence, and extending laterally across the table so that a work piece being moved across the table may pass thereunder, the arm being vertically adjustable to accomodate work pieces of different thicknesses, a router base plate adjustably slidable along the arm to vary its spacing from the fence, and a powered router carried by the base plate and including a vertically oriented router bit projecting downwardly through an orifice of the base plate to form said work piece. If the fence itself is laterally adjustable relative to the table, a measuring device for accurately indicating the lateral spacing of the router bit from the fence despite adjustments of the fence is provided.

Claims

1. A router attachment for a saw table comprising:

a. a raised fence disposed along one straight edge of said table and being operable to guide a work piece moved slidably over said table in engagement therewith to move in a straight path,

b. a bracket mounted on said table,

c. a generally horizontal arm connected at one end to said bracket and extending across the top of said table normally to the extent of said frame,

d. a base plate connected to an extended portion of said arm and extending laterally from said arm, and

e. a router mounted on said base plate and including a power driven bit rotatable on a vertical axis and projecting downwardly through an orifice of said base plate, whereby to form a router cut in a work piece supported on and moved over said table beneath said base plate.

2. A router attachment as recited in claim 1 with the addition of means whereby said arm may be adjusted vertically with respect to said bracket, whereby said base plate may be positioned to allow said work piece to move therebeneath in sliding contact therewith.

3. A router attachment as recited in claim 1 with the addition of means whereby said base plate may be moved adjustably along said arm, whereby the spacing of said router bit from said fence, laterally to the general extent of the latter, may be adjusted.

4. A router attachment as recited in claim 1 with the addition of means whereby the elevation of said router bit relative to said base plate may be adjustably varied, whereby to vary the depth of the router cut in said work piece.

5. A router attachment as recited in claim 1 with the addition of:

a. means whereby said arm may be adjusted vertically with respect to said bracket, whereby said base plate may be positioned to allow said work piece to move therebeneath in sliding contact therewith,

b. means whereby said base plate may be moved adjustably along said arm, whereby the spacing of said router bit from said fence, laterally to the general extent of the latter, may be adjusted, and

c. means whereby the elevation of said router bit relative to said base plate may be adjustably varied, whereby to vary the depth of the router cut in said work piece.

6. A router attachment as recited in claim 1 wherein said bracket is mounted on said table at the edge thereof at which said fence is disposed, said bracket bridging over said fence to extend across said table, whereby all other edges of the table are unobstructed.

7. A router attachment as recited in claim 1 with the addition of means whereby said fence may be adjusted laterally of itself relative to the table, said bracket being mounted on said table independently of said fence whereby adjustment of said fence does not move said arm or said router, a slide mounted in said table flush with the top surface thereof and slidable in a direction normal to the general extent of the fence, said slide being calibrated to measure distance longitudinally thereof, means connecting one end of said slide to said fence whereby the former moves with the latter, and a pointer carried on said base plate and cooperating with the scale of said slide to measure the spacing of the router bit laterally from said fence.