Table saw

• US 5,857,507 A
• Filed: 09/20/1996
• Issued: 01/12/1999
• Est. Priority Date: 09/20/1996
• Status: Expired due to Term

• Current Assignee: Black & Decker Incorporated (Stanley Black & Decker, Inc.)
• Original Assignee: Black & Decker Incorporated (Stanley Black & Decker, Inc.)
• Inventors: O'Banion, Michael L., Welsh, Robert P., Puzio, Daniel, Shadeck, Louis M., Bean, Frederick R., Ceroll, Warren A., Gehret, Robert S., Livingston, Scott M.
• Primary Examiner(s): BRAY, WAYMOND D
• Application Number:
  US08/717,539
• Time in Patent Office: 844 Days
• Field of Search: 269/88, 269/73, 269/296, 269/299, 269/289 R, 144/1.1, 144/286.1, 144/286.5, 144/287, 83/477.2, 83/648, 83/859, 83/860
• US Class Current: 144/287
• CPC Class Codes: B23D 47/025 of tables
• CPC Class Codes: B23D 59/006 for removing or collecting chips
• CPC Class Codes: B23Q 11/0042 Devices for removing chips B23Q11/02, B23Q11/0875 take precedence
• CPC Class Codes: B23Q 11/0053 using the gravity force
• CPC Class Codes: B23Q 11/08 Protective coverings for parts of machine tools; Splash guards
• CPC Class Codes: B27G 19/02 for circular saws
• CPC Class Codes: Y10T 83/207 By suction means
• CPC Class Codes: Y10T 83/773 Work-support includes passageway for tool [e.g., slotted table]
• CPC Class Codes: Y10T 83/889 Tool with either work holder or means to hold work supply
• CPC Class Codes: Y10T 83/95 Machine frame

Abstract

A table saw or other cutting machine includes carrying members on an underside of the work table generally adjacent the flanged table edge in order to provide an increased gripping surface area to be grasped by the operator when lifting and transporting the cutting machine. The machine is preferably equipped with invertible extension support assemblies for supporting a workpiece extending horizontally beyond the work table. Such support assemblies include support members slidably extendable horizontally on rods toward and away from the work table. A dust deflection skirt extends from a lower surface of the work table into the generally hollow dust-receiving cavity portion of a dust shroud located within the saw'"'"'s enclosed base. This skirt deflects dust or chips into the interior of the hollow dust-receiving cavity. Anti-kickback spacers are preferably sealed-end blind rivets mounted on the anti-kickback pawls at intermediate locations thereon. Such spacers slidably maintain the anti-kickback pawls in a generally parallel relationship with the kerf splitter plate. Also hardened portions of the throat plate keep it from being damaged by serrated edges of the anti-kickback pawls and to prevent binding when the blade is lowered.

Claims

1. A cutting machine having a base, a generally horizontal work table supported by the base, a cutter opening in the work table, a rotatable cutter protruding through the cutter opening for performing cutting operations on a workpiece placed upon a first upper surface of the work table and moved longitudinally by an operator into engagement with the cutter, the improvement comprising an extension support assembly for supporting a workpiece horizontally outward of the lateral extent of the work table, said extension support assembly including a generally horizontal support member, at least one rod slidably extendable horizontally from beneath the work table in directions toward and away from the work table, said support member being interconnected with said rod for slidable extension toward and away from the work table with said rod, said support member being removably interconnectable with said rod in either of a first and a second orientation, an upper surface of said support member being coplanar with the upper surface of the work table when said support member is in said first orientation in order to support the workpiece flatly extending across the upper surface of the work table and across said upper surface of said support member.

2. A cutting machine according to claim 1, wherein said support member has at least a portion of its upper surface lying in a lower plane beneath the plane of the upper surface of the work table when said support member is in said second orientation, the work table having a second upper table surface adjacent a peripheral edge thereof coplanar with said lower plane, an auxiliary work support panel adapted to be removably placed upon and supported by said second upper table surface and said upper surface of said support member when in said second orientation with an upper surface of said auxiliary support panel being coplanar with the first upper surface of the work table in order to flatly support the workpiece thereon between the work table and said support member.

3. A cutting machine according to claim 2, further including means for removably attaching a brace member to said support member extending generally downwardly therefrom to a surface upon which the cutting machine is placed in order to provide further vertical support for the workpiece.

4. A cutting machine according to claim 2, further including means for attaching a brace member to said support member extending generally downwardly and inwardly to the base of the cutting machine in order to provide further vertical support for the workpiece.

5. A cutting machine having a base, a generally horizontal work table supported by the base, a cutter opening in the work table, a rotatable cutter protruding through the cutter opening to selectively adjustable heights above the work table for performing cutting operations on a workpiece placed upon a first upper surface of the work table and moved longitudinally by an operator into engagement with the cutter, a kerf splitter plate generally aligned with the cutting plane of the cutter and being interconnected with the cutter to be selectively height-adjustable therewith, the improvement comprising an extension support assembly for supporting a workpiece horizontally outward of the lateral extent of the work table adjacent a rear outfeed edge of the work table, said extension support assembly including a generally horizontal support member, at least one rod slidably extendable horizontally from beneath the work table in directions toward and away from the work table, said support member being interconnected with said rod for slidable extension toward and away from said rear outfeed edge of the work table, said support member being removably interconnectable with said rod in either of a first and a second orientation, an upper surface of said support member being coplanar with the upper surface of the work table when said support member is in said first orientation in order to support the workpiece flatly extending across the upper surface of the work table and across said upper surface of said support member, said upper surface of said support member lying in a lower plane beneath the plane of the upper surface of the work table when said support member is in said second orientation, the work table having a second upper table surface adjacent a peripheral edge thereof coplanar with said lower plane, an auxiliary work support panel adapted to be removably placed upon and supported by said second upper table surface and said upper surface of said support member when in said second orientation with an upper surface of said auxiliary support panel being coplanar with the first upper surface of the work table in order to flatly support the workpiece thereon between the work table and said support member.

6. A cutting machine according to claim 5, further including means for removably attaching a brace member to said support member extending generally downwardly therefrom to a surface upon which the cutting machine is placed in order to provide further vertical support for the workpiece.

7. A cutting machine according to claim 5, further including means for attaching a brace member to said support member extending generally downwardly and inwardly to the base of the cutting machine in order to provide further vertical support for the workpiece.

8. A cutting machine having a base, a generally horizontal work table supported by the base, a cutter opening in the work table, a rotatable cutter protruding through the cutter opening to selectively adjustable heights above the work table for performing cutting operations on a workpiece placed upon a first upper surface of the work table and moved longitudinally by an operator into engagement with the cutter, a kerf splitter plate generally aligned with the cutting plane of the cutter and being interconnected with the cutter to be selectively height-adjustable therewith, the improvement comprising an extension support assembly for supporting a workpiece horizontally outward of the lateral extent of the work table adjacent a rear outfeed edge of the work table, said extension support assembly including a generally horizontal support member, at least one rod slidably extendable horizontally from beneath the work table in directions toward and away from the work table, said support member being interconnected with said rod for slidable extension toward and away from said rear outfeed edge of the work table, said cutting machine further comprising at least a pair of support brackets interconnected with the underside of the work table and each having a support rod opening therethrough for slidably receiving said rod therein, one of said support brackets being located horizontally outermost and closest to said rear outfeed edge of the work table with respect to others of said support brackets, and said support rod opening through said outermost support bracket being shaped to provide greater clearance for said rod horizontally than vertically in order to substantially minimize binding of said rod when slidably moved toward and away from the work table.

9. A cutting machine according to claim 8, wherein said rod is an elongated cylindrical rod, said support rod opening through said outermost support bracket being generally elliptical in shape with its major axis being generally horizontal.

10. A cutting machine having a base, a generally horizontal work table supported by the base, a cutter opening in the work table, a rotatable cutter protruding through the cutter opening to selectively adjustable heights above the work table for performing cutting operations on a workpiece placed upon a first upper surface of the work table and moved longitudinally by an operator into engagement with the cutter, a kerf splitter plate generally aligned with the cutting plane of the cutter and being interconnected with the cutter to be selectively height-adjustable therewith, the improvement comprising an extension support assembly for supporting a workpiece horizontally outward of the lateral extent of the work table adjacent a rear outfeed edge of the work table, said extension support assembly including a generally horizontal support member, at least one rod slidably extendable horizontally from beneath the work table in directions toward and away from the work table, said support member being interconnected with said rod for slidable extension toward and away from said rear outfeed edge of the work table, said cutting machine further comprising a second extension support assembly for supporting a workpiece horizontally outward of the lateral extent of the work table, adjacent a lateral side edge of the work table, said second extension support assembly also including a generally horizontal side support member, at least one side rod slidably extendable horizontally from beneath the work table in directions toward and away from said lateral edge of the work table, said side support member being interconnected with said side rod for slidable extension toward and away from said lateral side edge of the work table.

11. A cutting machine according to claim 10, wherein said side support member is removably interconnectable with said side rod in either of a first and a second orientation, an upper surface of said side support member being coplanar with the upper surface of the work table when said side support member is in said first orientation in order to support the workpiece flatly extending across the upper surface of the work table and across said upper surface of said side support member, said upper surface of said side support member lying in a lower plane beneath the plane of the upper surface of the work table when said side support member is in said second orientation, the work table having a second upper table surface adjacent a peripheral edge thereof coplanar with said lower plane, an auxiliary work support panel adapted to be removably placed upon and supported by said second upper table surface and said side upper surface of said support member when in said second orientation with an upper surface of said auxiliary support panel being coplanar with the first upper surface of the work table in order to flatly support the workpiece thereon between the work table and said side support member.

12. A cutting machine according to claim 11, further including means for removably attaching a brace member to said side support member extending generally downwardly therefrom to a surface upon which the cutting machine is placed in order to provide further vertical support for the workpiece.

13. A cutting machine according to claim 11, further including means for attaching a brace member to said side support member extending generally downwardly and inwardly to the base of the cutting machine in order to provide further vertical support for the workpiece.