Automatic nailing machine

Claim 2

In an automatic nail driving device having a guide hole through which the nail to be driven is driven, a reciprocal compressed air piston rod means at the top of said guide hole above said nail for driving said nail downward, and a magazine means at the side of said guide hole for supplying nails to said guide hole, the improvement comprising: a magnetic attraction means positioned on the side of said guide hole opposite said magazine at a right angle to said guide hole and resiliently projecting into said guide hole for attracting said nails in said magazine, said attraction means comprised of: at least one cylindrical member fitted through the wall of said guide hole opposite said magazine at a right angle to said guide hole and having an opening into said guide hole, a spherical permanent magnet in said cylindrical member at the end thereof open into said guide hole, and biasing means within said cylindrical member against said permanent magnet for resiliently forcing said magnet toward said guide hole.

Claim 3

An improved automatic nailing device as claimed in claim 1, further comprising an improved magazine means for supplying nails to said guide hole, said improved magazine means comprised of: two spaced side plates having stepped protrusions at the top side thereof for engaging said nails beneath the heads thereof, one of said side plates having at the upper end thereof above said stepped protrusion thereon at least one tapped hole therethrough and the other of said side plates having at least one play hole therethrough above said stepped protrusion opposite said tapped hole, said side plates further having a plurality of small holes opposite each other therethrough at the lower sides thereof; a first spring fitted between and forcing apart the upper ends of said side plates between said tapped hole and said play hole; a bolt fitted through said play hole and threaded into said tapped hole, whereby tightening said bolt forces said side plates closer together against the force of said spring and brings said stepped protrusions closer together; a plurality of second springs between the lower insides of said plates between said plurality of opposing small holes; a plurality of connecting rods fitted through said small holes at the lower side of said side plates and said second springs, said connecting rods having a disc on each end thereof outside of said side plates; and a plurality of third springs surrounding said connecting rods on the outside of one of said side plates between said side plate and said disc at the end of said connecting rod.