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US 7,509,984 B2Granted
Mortiser and accessories therefor
AssigneeWMH Tool Group, Inc.
InventorsBarry M. Schwaiger, William J. Phillips
Life of this patent
Estimating the term…
Abstract
A power tool and accessories therefor including a variable speed motor for a mortiser, an integrated chisel positioning tool for positioning a chisel in a desired position, and an integrated tool sharpening device mounted directly on the power tool to permit ease and efficiency in the sharpening of tools. Additionally, an improved clamping arrangement is provided that permits firm clamping of a work piece without slippage. Greater flexibility in the hold down may be achieved by using arms for the hold down that are both rotatable about and can be translated along respective horizontal axes.
Claims44
A mortiser comprising:
- a base for supporting a workpiece, the base having an upper and a lower surface;
- a support extending from the base;
- a carriage connected to the support and disposed above the base, the carriage having a motor with a chuck for driving an auger and a chisel lock for connecting a chisel thereto;
- a clamp for retaining the workpiece on the base in at least one direction;
- and
- a fence connected to the base below the carriage and having an upstanding wall that is generally perpendicular to the upper surface of the base, the upstanding wall defining an opening through which at least a portion of the clamp is disposed;
- wherein the fence includes a threaded post extending from the fence in substantial alignment with the opening defined by the upstanding wall, and the clamp further comprises:
- a first body defining an opening through which the threaded post is disposed;
- at least one arm extending from the first body for positioning over an upper surface of the workpiece to prevent the workpiece from lifting off of the base;
- and
- a second body threaded onto the post extending from the fence and abutting the first body to prevent the first body and arms extending therefrom from lifting off of the workpiece and capable of driving the arm into engagement with the workpiece to positively clamp the workpiece.
8 more elements
A hollow chisel mortiser comprising:
- a table having a flat substantially rectangular upper surface;
- a post connected to the table adjacent one end thereof and extending in a direction transverse to the upper surface of the table;
- a fence mounted on the upper surface of the table;
- a clamping device fastened to the fence and positioned to permit clamping of a work-piece, which is disposed on the upper surface of the table adjacent the fence to the upper surface of the table;
- a carriage mounted on the post and disposed above the upper surface of the table for movement along the post toward and away from the upper surface of the table;
- a motor having a chucking device for holding a hollow mortising chisel mounted on the carriage for movement therewith;
- and
- a chisel sharpening tool in the form of a diamond cone sharpening tool mounted on the mortiser to permit sharpening of a chisel wherein the sharpening tool is mounted on the post.
5 more elements
A hollow chisel mortiser comprising:
- a table having a flat substantially rectangular upper surface;
- a post connected to the table adjacent one end thereof and extending in a direction transverse to the upper surface of the table;
- a fence mounted on the upper surface of the table;
- a clamping device fastened to the fence and positioned to permit clamping of a work-piece, which is disposed on the upper surface of the table adjacent the fence to the upper surface of the table;
- a carriage mounted on the post and disposed above the upper surface of the table for movement along the post toward and away from the upper surface of the table;
- a motor having a chucking device for holding a hollow mortising chisel mounted on the carriage for movement therewith;
- and,
- wherein the fence has a notch extending from an upper edge surface toward the upper surface of the table;
- and the clamping device is mounted on a support for the fence adjacent the notch and between the fence and the post, and has at least one arm that extends essentially parallel to the upper surface of the table toward and beyond the fence, either above the fence or through the notch, whereby a work-piece on the upper surface of the table adjacent the fence can be clamped to the upper surface of the table.
6 more elements
A power tool comprising:
- a mortiser having a base for supporting a workpiece, the base having an upper and a lower surface;
- a support extending from the base;
- a motor housing connected to the support and disposed above the base;
- a motor that drives a motor shaft and is housed within the motor housing;
- a hollow chisel in substantial alignment with the motor shaft;
- an adjustable fence connected to the base below the motor housing and movable toward and away from the support to selectively position said fence with respect to the bases;
- and
- at least one rotatable handle operably connected to the support for moving the fence toward and away from the support comprising a first handle extending from a first side of the support and a second handle extending from a second side of the support wherein each of the first and second handles is coupled with a common drive mechanism such that the fence may be moved toward and away from the support using either handle.
5 more elements
A mortiser comprising:
- a base for supporting a workpiece, the base having an upper and a lower surface;
- a support extending from the base;
- a carriage connected to the support and disposed above the base, the carriage having a motor with a chuck for driving an auger and a chisel lock for connecting a chisel thereto;
- a clamp for retaining the workpiece on the base in at least one direction;
- and
- a fence connected to the base below the carriage and having an upstanding wall that is generally perpendicular to the upper surface of the base, the upstanding wall defining an opening through which at least a portion of the clamp is disposed;
- wherein the carriage defines an opening for receiving at least a portion of a bushing and the apparatus further comprises:
- a bushing disposed in the carriage opening;
- and
- an integrated chisel positioning tool operably connected to the carriage movable between a first position wherein the chisel positioning tool is placed in alignment with the carriage opening to space the chisel an appropriate distance from the carriage opening, and a second position wherein the chisel positioning tool is spaced apart from the bushing and chisel to avoid interfering therewith.
7 more elements
Dependencies are inferred from the claim text.