Repetitive fence for cross-cutting materials
OwnerRobert W. Wiseinventor
Life of this patent
Estimating the term…
Abstract
A repetitive fence utilizes a plurality of telescoping arms driven by a metal tape of the tape measure type to position a stop member at a desired location from a saw blade. A user can position a work piece, such as board lumber against the stop member to repeatedly position the work piece at a desired cut dimension with respect to a saw blade. The repetitive fence preferably employs a plurality of telescoping arms to position the stop member at the desired location, and an electronic read-out provided to indicate to the user the position of the stop member with respect to the saw blade. The telescoping arms can be motivated by electronic devices, such as an electric motor, or by a manual crank.
Claims20
A repetitive fence for attachment to a cross-cut saw with reference to a saw blade, comprising:
- an extensible member having a work piece stop member attached thereto, the stop member being adapted to restrain dimensional lumber against inadvertent movement away from the saw blade;
- a bidirectional, positive drive mechanism having a tape drive sprocket for moving the stop member to a pre-selected distance;
- a coiled, drive tape having a main portion wound around a hub, an end portion connected to the extensible member, and a plurality of apertures positioned at regular intervals thereon for engagement with teeth on the drive sprocket;
- a mensuration device, operatively connected to the stop member for determining a relative position between the blade and the stop member;
- and,
- display means for visually displaying the relative position.
A repetitive fence for attachment to a cross-cut saw with reference to a saw blade, comprising:
- a plurality of telescopic arms, one of the telescoping arms having a work piece stop member proximal to a distal end thereof, the stop member being adapted to restrain dimensional lumber against inadvertent movement away from the saw blade;
- drive means for moving the stop member to a pre-selected distance, wherein the drive means includes a drive tape having a main portion wound around a hub, a distal end connected to the one of the telescoping arms, and a plurality of apertures positioned at regular intervals thereon for engagement with teeth on a drive sprocket;
- mensuration means, operatively connected to the stop member for measuring a relative position between the blade and the stop member;
- and, display means for visually displaying the relative position.
Dependencies are inferred from the claim text.