Work holders – Relatively movable jaws – Jaw features
Patent
1974-11-29
1976-09-07
Simpson, Othell M.
Work holders
Relatively movable jaws
Jaw features
269228, B23C 116
Patent
active
039787648
ABSTRACT:
Disclosed is a key making machine with a sample vise for receiving and retaining a sample key to be duplicated and a blank vise for receiving and retaining a key blank. When the sample key is positioned properly a path of electrical conduction is provided through it. A similar conductive path is established through the key blank when it is properly positioned. A series circuit through the key and blank prevents operation of the machine if the sample key or key blank is not properly positioned. During each cycle of operation, a support table completes one cycle of reciprocating linear motion. Toggles responsive to the motion of the table close the vises shortly after the table begins to move. Positioning towers near the vises support slidably mounted rigid fingers that project toward the vises to aid in the positioning of the key and the blank. Following closure of the vises, the towers respond to the motion of the table and move to a standby position to facilitate the cutting operation. Tower motion is linear and transverse to both table motion and finger projection. A cutter motor is mounted on the table with its shaft parallel to the direction of table motion. A coupling system couples the cutter motor to a cutter wheel and allows the axle of the wheel to move in a circular path about a drive shaft that is parallel to the cutter motor shaft. Motion of the cutter wheel with respect to the cutter motor is in response to a stylus that scans the bitted pattern of the sample key as the table reciprocates.
REFERENCES:
patent: 2467575 (1949-04-01), Stolove et al.
patent: 3442174 (1969-05-01), Weiner et al.
patent: 3602092 (1971-08-01), Richens
patent: 3834688 (1974-09-01), Richens et al.
Belinsky Z. R.
Hudson Lock, Inc.
Simpson Othell M.
Toupal John E.
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