Nail and powered nailer

Claim 2

In a power nailer a housing forming a barrel, a driver reciprocable in said barrel, a reciprocable piston means for actuating said driver to normally support the lower end thereof at a predetermined level, nail head locating stop means on opposite sides of said driver below said predetermined level, a magazine defining a V-shaped slideway having a portal into said barrel and provided with parallel facing channels spaced a distance of approximately two diameters of a nail head for supporting the remote edges of a pair of side-by-side nails offset longitudinally of said channels a distance approximately the diameter of the shank of said nail, the offset nail heads successively engaging said stop means on opposite sides of and below said driver.

Claim 3

The power nailer defined in claim 1 in which said magazine has a longitudinal slot, and including a resiliently urged retractible follower slidable in said slot to move said nail heads into contact with said stops.

Claim 4

A power nailer comprising, a housing having a hollow handle defining a compressed fluid reservoir, a cylindrical sleeve secured within the housing having an enlarged upper portion at one end defining a power piston cylinder, and a lower reduced cylindrical portion therebelow, a piston reciprocable in said lower cylindrical portion and having an enlarged head portion reciprocable in said upper portion, said power piston cylinder having ports proximate the upper end and ports around the lower end of said enlarged portion, said housing and sleeve defining a first passageway in communication with said upper ports and a second passageway in communication with said lower ports, a head closing the upper open end of said cylindrical sleeve and having a third passage therethrough in communication with said first passageway, said housing having a bore between said passages and said reservoir, valve means in said bore movable between two positions in one of which the first and third passageways are connected to the reservoir and the second passageway is vented to atmosphere and in the other one of which the first and third passages are vented to atmosphere and the second passage is connected to the reservoir, said piston head portion closing said upper ports in its resting position.

Claim 5

A power nailer comprising, a housing having a hollow handle defining a compressed fluid reservoir, a cylindrical sleeve secured within the housing having an enlarged upper portion at one end defining a power piston cylinder, and a lower reduced cylindrical portion therebelow, a piston reciprocable in said lower cylindrical portion and having an enlarged head portion reciprocable in said upper portion, said power piston cylinder having ports proximate the upper end and ports around the lower end of said enlarged portion, said housing and sleeve defining a first passageway in communication with said upper ports and a second passageway in communication with said lower ports, a head closing the upper open end of said cylindrical sleeve and having a third passage therethrough in communication with said first passageway, said housing having a bore between said passages and said reservoir, valve means in said bore movable between two positions in one of which the first and third passageways are connected to the reservoir and the second passageway is vented to atmosphere and in the other one of which the first and third passages are vented to atmosphere and the second passage is connected to the reservoir, said piston head portion closing said upper ports in its resting position.

Claim 6

The nail driver defined in claim 3 in which said valve means includes a spool valve having ends of different sizes and a sleeve reducing the size of a portion of said bore adjacent one end to provide a differential of cylinder sizes at opposite end portions receiving said heads by which pressure present in the central portion of the spool valve urges it to its closed position.

Claim 7

The nail driver defined in claim 4 in which said head is removable for the installation and servicing of said piston and valve.