Radial arm saw

• US 4,553,462 A
• Filed: 10/26/1983
• Issued: 11/19/1985
• Est. Priority Date: 10/26/1983
• Status: Expired due to Term

• Current Assignee: Howard Silken
• Original Assignee: Howard Silken
• Inventors: Silken, Howard
• Primary Examiner(s): Yost, Frank T.
• Assistant Examiner(s): Phan, Hien H.
• Application Number:
  US06/545,617
• Time in Patent Office: 755 Days
• Field of Search: 83/471.2, 83/471.3, 83/473, 83/477.1, 83/485, 83/486, 83/486.1, 83/487, 83/488, 83/581, 83/527, 83/574
• US Class Current: 83/471.3
• CPC Class Codes: B23D 45/025 Radial sawing machines
• CPC Class Codes: B23D 47/02 of frames; of guiding arrangements for work-table or saw-carrier
• CPC Class Codes: Y10T 83/7697 Tool angularly adjustable relative to work-support
• CPC Class Codes: Y10T 83/7705 Adjustable angular relationship
• CPC Class Codes: Y10T 83/7772 Angular relative to previous path
• CPC Class Codes: Y10T 83/8696 Means to change datum plane of tool or tool presser stroke
• CPC Class Codes: Y10T 83/8763 Convertible from tool path to another or from implement to machine

Abstract

A radial arm assembly for mounting a power saw, the assembly comprising: a horizontally disposed base frame; two vertically oriented mounting posts disposed at opposite sides of an edge of the base frame; a cross-bar horizontally mounted on the posts at opposite ends of the cross-bar; an arm for supporting the saw, the arm being attached to the cross-bar substantially centered between the ends, the arm adapted to rotate over the base frame about a vertical axis, the arm comprising a guideway along substantially all of the arm; and, the saw being mounted on the arm and adapted to translate along the guideway, a blade of the saw being moveable with the saw along said guideway, unobstructed by either of the posts, and to and from a position substantially beneath the vertical axis, whereby cuts substantially corresponding to the full length of the arm may be effected.

Claims

1. A radial arm assembly for mounting a power saw, said assembly comprising:

a horizontally disposed base frame;

two vertically adjustable mounting posts disposed at opposite sides of an edge of said base frame;

means for precisely coordinating adjustment of said vertical posts;

a cross-bar means horizontally mounted on said posts at opposite ends of said cross-bar means;

an arm means for supporting said saw, said arm means being rotatably attached to said cross-bar means about a vertical axis between said ends, said arm means being thereby adapted to rotate over said base frame about said vertical axis, said arm means comprising a guideway along substantially all of said arm; and

,

said saw being mountable on said arm means and adapted to translate along said guideway, a blade of said saw being moveable with said saw along said guideway, unobstructed by either of said posts, to and from a position substantially intersecting said vertical axis, whereby vertical and rotational adjustments of said saw are independent of one another and cuts substantially corresponding to the full length of said arm means may be effected.

2. The radial arm assembly of claim 1, further comprising means for mounting a circular power saw to said arm means, said circular power saw having a circular saw blade disposed for rotation in a vertical plane, about a horizontal axis, said plane passing through said vertical axis.

3. The radial arm assembly of claim 2, further comprising a fence for guiding and positioning work pieces, said fence being disposed at said edge of said base frame adjacent said mounting posts.

4. The radial arm assembly of claim 3, wherein each of said mounting posts comprises telescopic members operable in response to said coordinating adjustment means, for effecting said vertical adjustment.

5. The radial arm assembly of claim 4, further comprising means for precisely positioning said arm means at at plurality of rotational positions about said vertical axis, whereby a plurality of premeasured miter angles may be selected.

6. The radial arm assembly of claim 5, wherein said arm means is mounted to said cross-bar means at a point laterally offset from said arm means at one end of said arm means.

7. The radial arm assembly of claim 5, wherein said vertical axis is disposed substantially centered between said ends.

8. The radial arm assembly of claim 1, further comprising a fence for guiding and positioning work pieces, said fence being disposed at said edge of said base frame adjacent said mounting posts.

9. The radial arm assembly of claim 1, wherein each of said mounting posts comprises telescopic members operable in response to said coordinating adjustment means, for effecting said vertical adjustment.

10. The radial arm assembly of claim 1, further comprising means for precisely positioning said arm means at at plurality of rotational positions about said vertical axis, whereby a plurality of premeasured miter angles may be selected.

11. The radial arm assembly of claim 1, wherein said arm means is mounted to said cross-bar means as a point laterally offset from said arm means at one end of said arm means.

12. The radial arm assembly of claim 1, wherein said vertical axis is disposed substantially centered between said ends.

13. A radial arm saw, comprising:

a horizontally disposed base frame;

two vertically adjustable mounting posts disposed at opposite sides of an edge of said base frame;

means for precisely coordinating adjustment of said vertical posts;

a cross-bar horizontally mounted on said posts at opposite ends of said cross-bar;

a circular power saw;

a radial arm for supporting said saw, said arm being rotatably attached to said cross-bar about a vertical axis between said ends, said arm being thereby adapted to rotate over said base frame about said vertical axis, said arm comprising a guideway along substantially all of said arm, said saw being slidably mountable on said arm and adapted to translate along said guideway, unobstructed by either of said posts, to and from a position substantially intersecting said vertical axis, whereby vertical and rotational adjustments of said saw are independent of one another and cuts substantially corresponding to the full length of said arm means may be effected.

14. The radial arm saw of claim 13, wherein said saw has a circular saw blade disposed for rotation in a vertical plane, said plane passing through said vertical axis.

15. The radial arm assembly of claim 13, wherein said arm is mounted to said cross-bar at a point laterally offset from said arm at one end of said arm.

16. The radial arm assembly of claim 14, wherein said arm is mounted to said cross-bar at a point laterally offset from said arm at one end of said arm.