Abstract Rafter beam notching apparatus in which a power driven rotary saw is fixedly mounted on a pair of rods which travel horizontally in unison through the superstructure of a frame. The frame includes a table for horizontal placement thereon of a rafter beam to be notched. A first vertical support plate is fixedly mounted on the rod transversely thereof so as to travel with the rods, and has at least one guide pin projecting from a surface thereof. A second vertical support plate has at least one guide slot therethrough positioned to receive the guide pin of the first plate such that the second plate may be arranged in coplanar contact with the first plate in a plurality of predetermined positions. The second plate fixedly supports the motor of the rotary saw such that the cutter of the saw extends downwardly between the rods. The saw thus may be set at a plurality of angles to the horizontal corresponding to the plurality of positions of the second plate on the first plate, whereby notches of predetermined dimensions may be cut in the beam without requiring inclination of the beam.
An apparatus for notching rafter beams and the like, comprising: a frame having a table adapted for generally horizontal placement thereon of a rafter beam; said frame including a superstructure portion above said table; a pair of rods slidably mounted on said superstructure portion and arranged for horizontal travel in unison transversely of the longitudinal axis of a rafter beam on said table; a first vertical support plate fixedly mounted on said rods transversely thereof so as to travel with said rods; said first support plate having at least one guide pin projecting from a surface thereof; a second vertical support plate having at least one guide slot therethrough, said slot being positioned to receive said pin such that said second plate may be arranged in coplanar contact with said first plate in a plurality of predetermined positions; and a power driven rotary saw having its motor fixedly mounted on said second plate and its cutter extending downwardly between said rods, such that said rotary saw travels horizontally with said rods for cutting contact with said beam, and said saw may be set at a plurality of angles to the horizontal corresponding to said plurality of positions of said second plate on said first plate, whereby notches of predetermined dimensions may be cut in said beam.
Claim 2
Independent Claim
216 words
An apparatus for notching rafter beams and the like, comprising: a frame having a table adapted for generally horizontal placement thereon of a rafter beam; said frame including a superstructure portion above said table; a pair of rods slidably mounted on said superstructure portion and arranged for horizontal travel in unison transversely of the longitudinal axis of a rafter beam on said table; a first vertical support plate fixedly mounted on said rods transversely thereof so as to travel with said rods; said first support plate having at least one guide pin projecting from a surface thereof; a second vertical support plate having at least one guide slot therethrough, said slot being positioned to receive said pin such that said second plate may be arranged in coplanar contact with said first plate in a plurality of predetermined positions; and a power driven rotary saw having its motor fixedly mounted on said second plate and its cutter extending downwardly between said rods, such that said rotary saw travels horizontally with said rods for cutting contact with said beam, and said saw may be set at a plurality of angles to the horizontal corresponding to said plurality of positions of said second plate on said first plate, whereby notches of predetermined dimensions may be cut in said beam.
Claim 3
Dependent Claim
18 words
Apparatus as in claim 1 further including clamping means for holding said beam in place on said table.
Claim 4
Dependent Claim
13 words
Apparatus as in claim 1 further including means for hydraulically moving said rods.
Claim 5
Dependent Claim
33 words
Apparatus as in claim 1 wherein each of said first and second plates have indexing apertures therethrough for receiving means for setting the position of said second plate relative to said first plate.
Claim 6
Dependent Claim
20 words
Apparatus as in claim 1 further including lever arm means for movinG said second plate relative to said first plate.
Claim 7
Dependent Claim
25 words
Apparatus as in claim 1 wherein said guide pin has a flanged head for holding said second plate in coplanar relationship with said first plate.