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US 5,025,842 AGranted
Fence rail and method and apparatus of manufacturing the same
OwnerFrank E. Brimhallinventor
Life of this patent
Estimating the term…
Abstract
A machine for milling fence rails and the like having a pair of opposed milling units, each having a cutter head with a conically shaped inner surface, cutting knives arranged to taper material inserted into the heads to the shape of the inner surface and to form a projecting tine that is also tapered.
Claims5
A horizontal milling machine for use in tapering opposite ends of logs comprising a pair of movable milling units each mounted on tracks that are parallel to material to be milled;
- means for mounting said milling units to said tracks for movement of each said milling unit independent of the other said unit;
- a cutter head carried by each said milling unit each of which cutter heads has a conical shaped inner surface that aligns and directs material being milled into the center thereof and with each conical surface containing at least one slot with a cutting knife mounted therein for milling the ends of the material to conform to the conical shaped inner surface;
- clamping means between the cutter heads to immobilize fence rail stock to be milled by the cutter heads;
- and means for driving each of said cutter heads independently of the other and oppositely to the direction of rotation of the other.
1 more element
A method of forming a fence rail comprising
- forming a tapered shoulder adjacent each end of a fence rail stock;
- forming a tine projecting from the smallest portion of each tapered shoulder and extending outwardly from such tapered shoulder;
- and
- forming a taper on the end of each tine.
1 more element
Dependencies are inferred from the claim text.