Refrigerating apparatus with indicating means

Claim 1

REFRIGERATING APPARATUS INCLUDING AN INSULATED CABINET CONTAINING A COMPARTMENT TO BE COOLED, REFRIGERANT EVAPORATING MEANS NORMALLY OPERATING AT BELOW WATER FREEZING TEMPERATURS ASSOCIATEWD WITH SAID COMPARTMENT FOR COOLING SAID COMPARTMENT AND INCIDENTALLY ACCUMULATING FROST THEREFROM, ELECTRICALLY OPERATED REFRIGERANT LIQUEFYING MEANS OPERABLY CONNECTED TO SAID EVAPORATING MEANS, ELECTRICAL CONTROL MEANS FOR CONTROLLING SAID LIQUEFYING MEANS TO MAINTAIN SAID EVAPORATING MEANS NORMALLY BELOW WATER FREEZING TEMPERATURES, ELECTRICALLY CONTROLLED MEANS FOR DEFROSTING SAID EVAPORATING MEANS, A RECHARGEABLE BATTERY, A THERMOSTATIC SWITCH RESPONSIVE TO THE TEMPERATURE OF SAID COMPARTMENT AND OPERATED TO CLOSED POSITION IN RESPONSE TO A PREDETERMINED HIGH TEMPERATURE OF SAID COMPARTMENT TO BE COOLED, ELECTRICAL WARNING MEANS, CONDUCTOR MEANS ELECTRICALLY CONNECTING SAID BATTERY AND SAID THERMOSTATIC SWITCH AND SAID WARNING MEANS IN SERIES CIRCUIT, ELECTRICAL SUPPLY CONDUCTOR MEANS OPERABLY CONNECTED TO SAID LIQUEFYING MEANS UNDER THE CONTROL OF SAID CONTROL MEANS AND TO SAID ELECTRICALLY CONTROLLED DEFROSTING MEANS, BATTERY RECHARGING MEANS INCLUDING A RECTIFIER OPERABLY CONNECTED TO SAID BATTERY, AND MEANS COINCIDENTAL TO THE DEFROSTING OF SAID EVAPORATING MEANS FOR ENERGIZING SAID RECHARGING MEANS.