Browse Prior Art Database

Tamper Proof Currency Cartridge

IP.com Disclosure Number: IPCOM000121634D
Original Publication Date: 1991-Sep-01
Included in the Prior Art Database: 2005-Apr-03
Document File: 4 page(s) / 142K

Publishing Venue

IBM

Related People

Boothroyd, WA: AUTHOR

Abstract

Disclosed are enhancements to currency cartridges which have been designed to reduce or eliminate the possibility of unauthorized access, or tampering, of the cartridges in automated teller machines and like devices. Such tamper-proof cartridges are especially useful in situations where the machine is serviced by third parties.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 52% of the total text.

Tamper Proof Currency Cartridge

      Disclosed are enhancements to currency cartridges which
have been designed to reduce or eliminate the possibility of
unauthorized access, or tampering, of the cartridges in automated
teller machines and like devices.  Such tamper-proof cartridges are
especially useful in situations where the machine is serviced by
third parties.

      Fig. 1 illustrates an arrangement for improving the security of
a currency cartridge.  An anti-fish tab 10 is folded out of the metal
cover 12 which surrounds the solenoid 14 and an electronic circuit
card. The illustrated apparatus also includes an unlock operating rod
16, a plastic anti-fish box 18, an electrical cable entry area 20, a
cartridge box 22, and a plastic block 24.  The anti-fish tab 10
eliminates the possibility of fishing a hook between the cover 12 and
the box 18 to gain access to the unlock operating rod 16.

      Fig. 2 illustrates another arrangement for improving the
security of a currency cartridge.  The unlock operating rod 16
controls the lock 26 which is surrounded by the lock mechanism cover
28.  The plastic lock mechanism anti-fish box 30 includes a flange 32
and bottom section which deter the insertion of a thin instrument for
the purpose of operating the unlock rod.

      Fig. 3 illustrates another security-improving mechanism.  The
mechanism as shown in Fig. 3 would replace the entire existing
locking arrangement up to and including the latching end of the
present operator-moved bolt.  This new mechanism would be located
approximately under the present carrying handle in the sheet metal
lock mechanism cover and most parts would mount to the main cash box.
Additional simplifications could be made in the following areas: the
cover for the electronics card, the main cash box, and the lock
mechanism cover.

      Protection from fishing is provided by "L" sections 34 and 36
attached (by spot welds) to either the main cash box or to the lock
mechanism cover, the plastic spacer block under the "U" frame magnet
assembly 38, and the tab 40 attached to (or alternatively formed out
from) the bolt 42. Further, the "U" shape of the present bolt would
protect those elements located within it.

      Soft iron bar 44 pivoting on pin 46 and engaging edge 48 forms
the normal primary lock.  This is unlocked, allowing an operator to
significantly move the bolt 42, by magnetic influence from the "U"
frame/coil assembly 38, overcoming the spring force represented by
F1.  Note that pin 50 (attached to the bolt) stops pawl 52, thereby
establishing the rest position for bar 54 and, in turn, bar 44.  Note
also that the gap between the end of bar 44 and edge 48 is adequate
to allow pawl 52 to be operative as an up-lock for bar 54 prior to
the position of the bolt that would hold the end of bar 44
disengaged.

      Forces F1 and F2 are supplied by...