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METHOD AND APPARATUS FOR MONITORING HOT BOXES

  • US 3,646,343 A
  • Filed: 02/26/1970
  • Issued: 02/29/1972
  • Est. Priority Date: 02/26/1970
  • Status: Expired due to Term
First Claim
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1. A method for detecting hot journal boxes of cars of a train, said method comprising the steps of:

  • serially monitoring the temperatures of journal boxes disposed on one side of a passing car with a common sensor to provide respective monitored temperature signals;

    deriving a respective reference temperature signal for said side of each car from a selected plurality of said monitored temperature signals associated with said side of each car; and

    comparing selected ones of said monitored temperature signals with the derived reference temperature signals for the side and the car associated with said selected ones of said monitored temperature signals respectively to provide output alarm indications of hot journal boxes.

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