Drill/saw apparatus
OwnerGeorge C. Bourkeinventor
Life of this patent
Estimating the term…
Abstract
A compact drill attachment or device for converting rotary drill motion to reciprocating saw action and adapted to be used in conjunction with cordless, electric and pneumatic hand held drills. A practical and extremely versatile tool to accomplish sawing results that were before inconceivable. Featuring a plurality of different reciprocal flush cut options, a plurality of entries from a power source to accomplish close quarter sawing, a blade stroke distance which exceeds the competition, a cutting stroke which is faster than the cleaning stroke, a plurality of shoe or fence settings, and which accepts major brands of reciprocal saw or jigsaw blades.
Claims39
An apparatus for converting rotary motion from a rotary power tool into a reciprocating motion of a saw, file, sander, or the like, comprising:
- a housing, a first gear mounted in said housing and having a peg mounted eccentrically thereon, a blade drive arm reciprocal in said housing and having a drive slot therein and a drive head attached thereto, said peg received in said slot, a second gear mounted in said housing orthogonally with respect to said first gear and being engaged therewith, said second gear having an end with a recess therein, said first gear having a recess in a center portion thereof, each of said recesses adapted to receive a removable drive pin extending from a rotary power tool whereby rotation of the drive pin received in either of said recesses causes reciprocation of said drive head along an axis perpendicular to the rotational axis of said first gear.
A power tool attachment for converting rotary motion from a power tool into reciprocating motion of a saw comprising:
- a housing, a helical gear mounted in said housing and having a peg mounted eccentrically thereon, a blade connected to a blade drive arm, said blade drive arm reciprocable in said housing and having a slot therein, said peg received in said slot, a first worm gear mounted in said housing orthogonally with respect to and being engaged with said helical gear, said first worm gear having an end with a recess therein, said helical gear having a recess in a center portion thereof, and a removable drive pin receivable in any one of said recesses and a rotatable power tool chuck at opposite ends thereof, whereby rotation of said power tool chuck enables the reciprocation of said blade along an axis orthogonal to a rotation axis of said helical gear.
A power tool attachment for converting rotary motion from a power tool into reciprocating motion of a saw comprising:
- a housing, a first bevel gear mounted in said housing and having a peg mounted eccentrically thereon, a blade removably attached to a slider connected to a blade drive arm, said blade drive arm reciprocable in said housing and having a slot therein, said peg received in said slot, a second bevel gear mounted in said housing orthogonally with respect to and being engaged with said first bevel gear, said second bevel gear having a recess therein, said first bevel gear having a recess in a center portion thereof, and a removable drive pin receivable in any one of said recesses and a rotatable power tool chuck at opposite ends thereof, whereby rotation of said power tool chuck enables the reciprocation of said blade along an axis parallel to a rotation axis of said power tool chuck or along an axis orthogonal to said axis of said power tool chuck depending upon which recess the drive pin is received.
Dependencies are inferred from the claim text.