GB2142176A

GB2142176A - Read and erase device

Info

Publication number: GB2142176A
Application number: GB08317166A
Authority: GB
Inventors: Alan Fyfe Anderson
Original assignee: HAWKER SIDDELEY REVENUE CONTR
Current assignee: HAWKER SIDDELEY REVENUE CONTR
Priority date: 1983-06-24
Filing date: 1983-06-24
Publication date: 1985-01-09
Also published as: GB8317166D0

Abstract

A device adapted to read and erase magnetically encoded information on a ticket or card includes an entry mouth 18 which leads to a flow path 19 passing between a drive roller 13 and a pinch roller 15 and terminating in an exit mouth 20. A magnetic read head 25 is located along the flow path within a casing 10 and is adapted to read information magnetically recorded on the card or ticket as it flows along the flow path 19. A restriction or hump 8 creates a restricted portion 8A of flow path 19 to deflect the ticket or card towards the read head 25 so as to ensure firm and consistent contact with the read head whilst the ticket or card is read. <IMAGE>

Description

SPECIFICATION Read and erase device This invention relates to a read and erase device adapted to read and erase magnetically encoded information on a ticket or card such as a ticket used on a public transport system or a credit card or identification card or similar cards containing coded information.

An object of the invention is to provide a compact self-contained device which may for example be attached to a local utility meter such as an electricity meter, a meter used in a district heating system, or a gas meter. The device may also be used in a system where recognition and identification is required, for example in fare collection or in card controlled locking systems such as are used in garages and car parks.

In accordance with the invention there is a compact read and erase device for reading and erasing magnetically encoded information on a ticket or card, the device comprising a read head and system of drive and pinch rollers for passing a ticket or card from an entry slot to the read head, or to a combined read/erase head, a flow path through the device being provided characterised by this, that there is a restriction in the flow path just before reaching the read head such that the ticket or card is directed towards the read head to ensure adequate contact between the card and read head. Preferably the restriction is in the form of a hump extending from one side of the flow path, across the flow path towards the other side so that as the leading edge of the card reaches the hump it is deflected across the path towards the read head.

Preferably also the spacing of the restriction, the read head and the drive and pinch rollers are such that the ticket or card is simultaneously in contact with the restriction, the read head and the drive and pinch rollers during the time when the card or ticket is being read so as to hold the card or ticket firmly in contact with the read head whilst information on the card is being read.

The device may for instance be used in the credit card system described in our copending patent application No. 8137197 which requires a token reader to be attached to a commodity dispensing equipment such as a hot water meter employed in a district heating system.

Such systems may operate by a combination of identity cards and value cards and the device in accordance with this invention may be adapted to read both types of cards and produce an output which in turn may be used to operate a meter mechanism which supplies the appropriate quantity of the hot water or other itility being dispensed.

The device may also be used for example on the entry gate of a public transport system such as an underground railway system and may be equally adapted to and used with existing automated gates.

Preferably the device comprises a single compact casing providing the flow path for the ticket or credit card, the flow path having a drive roller and one or more pinch rollers to propel the card or ticket through the device, a magnetic read head for reading the information on the card, and optionally a magnetic erase heas which may be combined with the read head for removing information recorded on the card. The drive roller may be driven by a small electric motor attached to or forming an integral part of the device and there may be entry and exit switches to energise and de-energise the motor and to control its direction as the card or ticket enters and leaves the device.

In the drawings: Figure 1 is a front elevation of a read and erase device in accordance with this invention with parts removed and other parts shown in dotted line to illustrate the internal construction; Figure 2 is a side elevation of the same device; Figure 3 is a block diagram of apparatus with which the read and erase device may be used.

The device comprises a compact casing 10 which is attached to an electrical drive motor 11 which, via roller 9, drives a drive roller 13 which is mounted on a shaft 12. Within the casing 10 on a shaft 14 is mounted a pinch roller 15 (Figure 1). The casing 10 includes an entry mouth 18 which leads to a flow path 19 passing between the drive roller 13 and the pinch roller 15. The flow path 19 terminates in an exit mouth 20. Adjacent to the entry mouth 18 are sensors 21, which may be optical sensors, and which incorporate switches adapted to energise the motor 11 when a card is pushed into the entry mouth 18.

Similarly adjacent to the exit mouth 20 are sensors incorporating switches 22 which may be used to de-energise the motor at the end of the cycle or to reverse the motor and return the card to the entry mouth 18.

A magnetic read head 25 is located within the casing 10 and is adapted to read information magnetically recorded on the card or ticket as it flows along the flow path 19.

An erase head 23 may also be provided and is shown in Figure 1. The erase head may be combined with the read head in a single unit located at the position of read head 25.

In the flow path 19 between the entry 18 and the read head 25 is a restriction in the form of a hump 8 which creates a restricted flow path 8A. A ticket moving along the path 19 encounters the hump 8 and is deflected towards the read head 25. Because the hump 8 is close to the read head 25 which in turn is close to the drive and pinch rollers 13, 15 the ticket is held and guided firmly in good and consistent contact with the read head 25 whilst the information on the ticket is being read.

In use this device can be attached to a meter, a control gate, or a similar mechanism and when a card or ticket is pushed into the entry mouth the switches 21 are energised to switch on the motor 11 which, via roller 9, drives the drive roller 13 so as to cause the ticket or card to move along the flow path 19 between the drive roller 13 and pinch roller 15. As the card or ticket passes the magnetic read head 25 the information on the card orticketwill be read and, if the erase device is used the information on the card or ticket will be erased as it passes the erase device 23. As the ticket or card exits through the exit mouth it will pass the sensors 22 which will switch off the motor and stop operation of the device.

Alternatively afterthe card or ticket information has been interpreted, the motor 11 may be reversed to as to propel the card or ticket back along the flow path 19 towards the entry mouth 18 and the sensing device 21 would be used to switch off the motor and stop operation of the device. A typical use of the device by which a credit card may be employed for prepayment of charges for use of electricity is shown in Figure 3.

The read and erase device 10 is connected to a decoder 28 in turn connected via a controller 29 to the electricity meter 30. The controller may perform several functions. Initially it may compare a code on the card with a pre-set code on the controller and either accept or reject the card. If the card is accepted it may then set a mechanism in the meter to allow a predetermined amount of electricity to be used. It may also operate a counter to record the total electricity used.

The output from this device may be fed to appropriate logic circuits so as to operate the mechanism to which the device is attached.

Claims

1. A compact read and erase device for reading and erasing magnetically encoded information on a ticket or card, the device comprising a read head and system of drive and pin ch rollers for passing a ticket or card from an entry slot to the read head, orto a combined read/erase head, a flow path through the device being provided characterised by this, that there is a restriction in the flow path just before reaching the read head such that the ticket or card is directed towards the read head to ensure adequate contact between the card and read head.

2. A compact read and erase device according to claim 1 in which the restriction is in the form of a hump extending from one side of the flow path, across the flow path towards the other side so that as the leading edge of the card reaches the hump it is deflected across the path towards the read head.

3. A compact read and erase device according to claim 1 or claim 2 and in which spacing of the restriction, the read head and the drive and pinch rollers are such that the ticket or card is simultaneously in contact with the restriction, the read head and the drive and pinch rollers during the time when the card or ticket is being read so as to hold the card or ticket firmly in contact with the read head whilst information on the card is being read.

4. A compact read and erase device substantially as hereinbefore particularly described and as illustrated in the accompanying drawings.