Record cards feed track

Claim 1

A RECORD CARD MACHINE COMPRISING: A FRAME, A PLURALITY OF PRIMARY GEARING MEANS LOCATED IN REGULARLY SPACED POSITIONS ALONG SAID FRAME, MEANS FOR SIMULTANEOUSLY DRIVING SAID PRIMARY GEARING MEANS, AND A PLURALITY OF DETACHABLE UNITS EACH COMPRISING A SECONDARY GEARING MEANS, A CARD FEED TRACK PORTION, MEANS FOR FEEDING A CARD ALONG SAID TRACK PORTION, MEANS FOR COUPLING SAID CARD FEEDING MEANS TO SAID SECONDARY GEARING MEANS AND A SUPPORT FOR CARRYING SAID SECONDARY GEARING MEANS, SAID TRACK PORTION, SAID FEEDING MEANS AND SAID COUPLING MEANS OF THE UNIT, EACH UNIT FURTHER COMPRISING FASTENING MEANS WHICH ENABLE IT TO BE SECURED ON SAID FRAME IN ANYONE OF A PLURALITY OF POSITIONS WHERE ITS SECONDARY GEARING MEANS CAN ENGAGE ONE OF SAID PRIMARY GEARING MEANS, THE DIFFERENT UNITS OF SAID PLURALITY OF UNITS BEING POSITIONED WITH THEIR SECONDARY GEARING MEANS EACH IN ENGAGEMENT WITH A DIFFERENT ONE OF SAID PRIMARY GEARING MEANS SO AS TO FORM AN UNINTERRUPTED CARD FEED TRACK ALONG WHICH A CARD CAN TRAVEL BY BEING FED SUCCESSIVELY THROUGH SAID DIFFERENT UNITS.