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US 5,181,448 AGranted
Miter saw apparatus with adjustable workpiece supporting fence
AssigneeEmerson Electric Co.
InventorDaniel A. Terpstra
Life of this patent
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AssigneeEmerson Electric Co.
InventorDaniel A. Terpstra
Estimating the term…
A miter saw is constructed to move a workpiece supporting fence between rearward and forward longitudinal positions relative to a saw blade, as well as the automatic transverse movement of the workpiece supporting fence relative to the saw blade as a turntable is rotated to selected miter positions. The workpiece supporting fence includes a T-shaped slot in fence supportng sections thereof and a pair of downwardly directed pins fixed to the underside of the workpiece supporting fence. A fence lock extends through the longitudinal portion of the T-shaped slot, to enable the fence to be moved between its forward and rearward position. The fence lock engages the fence in a repeatable and controllable locking action. The downwardly directed pins are positioned within a pair of generally parallel openings in the turntable, there being one opening on each side of a saw blade slot. When the workpiece supporting fence is in its rearward position, one of the pins engages peripheral areas adjacent a curvilinear portion of its associated opening in order to move the fence from side-to-side as the turntable is rotated for selected miter cuts. When the workpiece supporting fence is in its forward position and the turntable is rotated, the opening moves relative to the pins, without engagement therewith. Thus, no relative transverse movement of the fence to the saw blade is required when the fence is in the forward position.
A miter saw apparatus comprising a supporting frame, a turntable selectively rotatably mounted on said supporting frame, a power driven saw blade pivotally mounted on said turntable, said turntable having a saw blade slot for receiving the power driven saw blade therein, a workpiece supporting fence mounted on said supporting frame, said workpiece supporting fence including a pair of workpiece engaging surfaces in general alignment with each other across the saw blade slot, means for moving said workpiece supporting fence relative to said turntable between a forward position i general alignment with the center of said turntable and a rearward position behind the center of said turntable independent of rotation of said turntable and without removing said workpiece supporting fence from said supporting frame, means for locking and unlocking said workpiece supporting fence relative to said supporting frame in both said forward and rearward positions, said workpiece supporting fence in its forward position causing the pair of workpiece engaging surfaces thereof to be in general alignment with the center of the turntable, said workpiece supporting fence in its rearward position causing the pair of workpiece engaging surfaces thereof to be positioned behind the center of the turntable, and means for automatically transversely moving said workpiece supporting fence relative to said power driven saw blade as said turntable is rotated and when said workpiece supporting fence is in a rearward position, so as to maintain said workpiece supporting fence in a predetermined position relative to said power driven saw blade as said turntable and included power driven saw blade are selectively rotated on said supporting frame to various desired miter positions.
A miter saw apparatus comprising a supporting frame, a turntable selectively rotatably mounted on said supporting frame, and a power driven saw blade pivotally mounted on said turntable and received in a saw blade slot in said turntable, a workpiece supporting fence mounted on said supporting frame including a pair of workpiece engaging surfaces generally aligned with each other across the saw blade slot and a fence supporting section perpendicular to and attached to each of said workpiece engaging surfaces, each said fence supporting section including a slot extending generally transverse to said workpiece supporting fence, each said slot receiving a fence lock therethrough which is received in a boss in said supporting frame to lock said fence in locked and unlocked position, and each said slot allowing said fence to be moved between a forward position in general alignment with the center of the turntable and a rearward position behind the center of the turntable independent of rotation of said turntable and without removing said fence from said supporting frame when said lock is unlocked, said fence lock being adapted to lock said fence in along said slot as desired.
A miter saw apparatus comprising a supporting frame, a turntable selectively rotatably mounted on said supporting frame, a power driven saw blade pivotally mounted on said turntable, said turntable having a saw blade slot for receiving the power driven saw blade therein a pair of elongated openings, one said opening on each side of said slot, a workpiece supporting fence mounted on said supporting frame and including a pair of workpiece engaging surfaces in general alignment across the saw blade slot, said workpiece supporting fence including a pair of spaced pins, one said pin extending into each said opening and engaging peripheral areas forming each said opening in said turntable for transversely moving said workpiece supporting fence relative to said saw blade.
In a miter saw apparatus having a supporting frame, a turntable selectively rotatably mounted on said supporting frame, a power driven saw blade pivotally mounted on said turntable, said turntable having a saw blade slot for receiving the power driven saw blade therein, a workpiece supporting fence mounted on said supporting frame, said workpiece supporting fence including a pair of workpiece engaging surfaces in general alignment with each other across the saw blade slot, the improvement comprising:
Dependencies are inferred from the claim text.