Key cutting device
OwnerTom R. Johnsinventor
Life of this patent
Estimating the term…
Abstract
A portable support assembly adapted for use with tubular or barrel keys includes a coded adjustable mount for maintaining the key in a predetermined code location. The mount is secured to one face of a cutter support and includes an eccentric cutter opening through which a support assembly is extended for cutter grooves of selected heights around the periphery of the key. In order to control the depth of cut of each groove the support assembly is provided with a threaded end stop bearing index marks which according to the rotation thereof controls the depth of extension of the cutter through this port.
Claims5
Apparatus for cutting a cylindrical key blank according to a predetermined sequence of peripheral cuts comprising;
- a support assembly including a cutter bore extending between two lateral sides thereof,
- a splined key mount including a planar mounting portion having a splined shaft projecting therefrom and an elongate opening therein at a predetermined space from said shaft, said splined shaft having a plurality of splines disposed at predetermined peripheral intervals, said splined key mount being supported on one side of said support assembly with its elongate opening being in alignment with the axis of the cutter bore,
- a cutter assembly including a cylindrical barrel having a central bore, one portion of said cylindrical barrel being slidably received in the cutter bore of said support assembly, a rotary cutter being mounted in the central bore of said cylindrical barrel and extending through the elongate opening of said spined key mount, a depth gage being in threaded engagement on the other end of said cylindrical barrel for abutting the other of said lateral sides of the support assembly thereby limiting the axial advancement of the barrel relative to the support assembly, and detent means associated with said barrel and said depth gage for selectively threadingly adjusting the gage on said barrel to control the depth of each of the peripheral cuts made by the cutter in the key blank.
Dependencies are inferred from the claim text.