Combination tool

Compound tools – Hammer

Patent

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Details

30367, 145 46, 145 29R, 145 62, B26B 902, B26F 100

Patent

active

042689279

ABSTRACT:
A combination hammer, impact device, and screw driver has an elongated cylinder formed in the hammer handle in which is reciprocably carried a drive piston, spring urged under the force of a heavy spring, toward the open cylinder end at the base of the handle opposite the hammer head. The spring is adjustably preloaded for corresponding adjustable impact forces, compressed and then released to drive the piston in an outward direction after a predetermined inward movement of an impact piston, also reciprocably carried by the cylinder and extendable from the handle base. The impact piston carries a removable impact tool. The impact tools and the adjustment member for the spring preload are color coded to obtain proper matching of the impact force and tool. A hexagonal recess is formed in the hammer head in substantial longitudinal alignment with the handle with a magnet being secured in the bottom of the recess. Screw driving inserts, having hexagonal bases, are closely fittable in the recess and removably retained therein by the magnet. Storage is provided in the handle for the tools and drivers.

REFERENCES:
patent: 102677 (1870-05-01), Gregory
patent: 623792 (1899-04-01), Lans
patent: 1109507 (1914-09-01), Bostock
patent: 1458961 (1923-06-01), Williams
patent: 1712343 (1929-05-01), Gerhardt
patent: 2384707 (1945-09-01), Sweet
patent: 2675079 (1954-04-01), Hughes
patent: 3119424 (1964-01-01), Henry
patent: 3172204 (1965-03-01), Frey

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