Abstract: A key cutting machine capable of duplicating a key blank from a master key and cutting a key blank to form a desired key from a lock manufacturer's code or number governing the depths of the cuts and the spaces between them being formed in the key blank. The key cutting machine having a plurality of interchangeable discs each of which has a plurality of depth cut-outs arranged circumferentially on one of its sides corresponding with the key cut-out depths specified by various key and lock manufacturers and having a plurality of interchangeable spacing keys, each of which has a plurality of longitudinally spaced configurations arranged in various different patterns in accordance with various key and lock manufacturer's code or identifying number.

Abstract: An adjustable drill mounting device to be used to align and hold a power drill in movable position against a safe in a predetermined manner so that the safe can be drilled open. The device can be attached to a wide variety of safe configurations easily and is totally portable.

Abstract: A tubular key blank is received in a rotatable, indexable chuck. The chuck is positioned below a selectively actuatable milling tool that is movable vertically and horizontally to mill grooves at designated positions in the key blank.

Abstract: A coded key cutting device for cutting key blanks using the manufacturer's code is comprised of a pair of movable carriage assemblies that index a key blank secured to one of the carriage assemblies under a punch cutter. Each of the assemblies is movably indexed according to an interchangeable cam depending on the manufacturer's code. The key blank is positioned for longitudinal and transverse movement under the punch so that a series of spaced notches can be made in the key blank.