Drawer Latch Mechanism
Original Publication Date: 1981-Jun-01
Included in the Prior Art Database: 2005-Feb-11
The drawing is a top view of a cash-drawer latch mechanism for a point of sale terminal. Electrically operated solenoid 10 pulls link 11 to rotate latch arm 12 about pivot stud 13. (Finger 14 engages a key lock (not shown) for rotating latch arm 12 manually.) When tooth 15 clears stop 16, cam 17, made of a self-lubricating plastic, rotates about pivot stud 18 until tooth 15 engages stop 19 under the urging of spring 20. This rotation frees latch pin 21 carried by U-bracket 22, from slot 23 in cam 17 so that drawer 24 may be opened. The rotation of cam 17 also allows actuator 25 to open indicator switch 26.