Word: photoflood
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Dates: during 1950-1959
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Bill Changer. The first automatic device to make change for paper currency, long a vexing problem to vending-machine operators, was announced by Chicago's A.B.T. Manufacturing Corp. The table-model machine changes $1 bills by scanning the bill through six holes with photoflood lights, registering the beams on a light-sensitive surface. The machine recognizes and rejects counterfeits, foreign currency and bills of wrong denominations. It can be modified to handle $2, $5 or $10 bills. Estimated price when it goes on the market in the spring...
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