US 4,283,980 A · Combination portable and stationary, bench-mounted chain saw apparatus

Abstract

Apparatus for sawing which can be used either in portable, manually operated form, or as a stationary bench-mounted sawing device for sawing through a workpiece along predetermined angles of cut. The apparatus comprises a portable chain saw which includes a prime mover secured to one side of a flat mounting plate. A saw blade guide plate projects from the prime mover through a slot provided in the mounting plate, and in a plane substantially normal to the plane of the mounting plate. A saw blade is extended around, and guided by, the guide plate, and is protected by guard means pivotally mounted on the mounting plate. A cradle frame structure releasably receives and clamps the mounting plate in a table sawing position when the chain saw is to be so used. A cradle frame pedestal pivotally supports the cradle frame structure for pivotation about a horizontal axis. A pivotally supported turntable is positioned beneath and supports the pedestal, with the turntable and associated pedestal being pivotable about a vertical axis. A workpiece-supporting table is positioned adjacent the cradle frame structure, pedestal and turntable, and has a substantially horizontal working surface located below the guide plate of the chain saw.

Claims18

Dependent claims

Chain saw apparatus comprising:

turntable means pivotable about a vertical axis;
a pedestal subassembly mounted on said turntable means for pivotation therewith;
a cradle frame subassembly pivotally supported on said pedestal subassembly for pivotation about a horizontal axis and including a cradle frame having plate-receiving channels forming a part thereof;
a portable chain saw including:
a mounting plate slidably inserted in, and removable from, said cradle frame to facilitate rapid manual placement of the portable chain saw in, and removal thereof from, said cradle frame;
a prime mover mounted on one side of said mounting plate above said pedestal subassembly;
a saw blade guide plate projecting from said prime mover through said mounting plate;
and
a saw blade movably mounted on, and guided by, the edges of said guide plate, projecting through said mounting plate and drivingly connected to said prime mover;
and
a table positioned under said saw blade guide plate for supporting a workpiece to be sawn with said chain saw.

8 more elements

A combination portable and stationary, bench-mounted chain saw apparatus comprising:

a base member;
a turntable rotatably mounted on one side of said base member for rotation about a vertical axis;
a vertically extending table mounted on the opposite side of said base member from said turntable and including a horizontally extending deck at the upper side of said table having a horizontally extending workpiece-supporting surface at the upper side thereof;
a portable chain saw including a chain saw blade;
means pivotally supporting the portable chain saw on said turntable for selective pivotal movement about a horizontal axis to swing the chain saw blade upwardly and downwardly in a vertical plane extending normal to the plane of said workpiece-supporting surface while mounting the chain saw to the turntable for rotative movement therewith;
means detachably retaining said chain saw in a fixed sawing position on said means pivotally supporting the saw on the turntable;
and
indexing and positioning means for selectively extending the chain saw blade at one of multiple chosen angles across said workpiece-supporting surface.

5 more elements

Dependencies are inferred from the claim text.

Combination portable and stationary, bench-mounted chain saw apparatus

Life of this patent

Combination portable and stationary, bench-mounted chain saw apparatus

Life of this patent

Abstract

Claims18