Locking apparatus for discouraging theft of tape cassette players

A locking device adapted for insertion into the cassette compartment of a tape cassette player, the device comprising:

• an external portion having a locking mechanism accessible when said locking device is inserted into said compartment,
• an internal portion of dimensions substantially equivalent to a tape cassette for insertion into said compartment,
• said internal portion having at least two latches selectively extendable through a window in a surface of said internal portion, said latches being adapted for engaging structure of said player within said compartment adjacent said internal portion,
• a latch actuator communicating with said locking mechanism and with said latches, said actuator being responsive to said locking mechanism for extending said latches through said window when said locking mechanism is locked and retracting said latches when said locking mechanism is unlocked,
• said latches comprising a blocking member affixed to a swing plate, said swing plate being rotatably anchored adjacent said window for selective extension and retraction of said blocking member through said window,
• at least one spring located in relation to said swing plate for resisting said extension of said blocking member and for influencing said retraction of said blocking member, and
• said latches selectively extendable through respective windows on opposing surfaces of said internal portion,
• and wherein said latch actuator cmmprises means for selectively extending both said latches when neither is blocked and one said latch when the other such latch is blocked.