Portable water heater

Claim 1

A COMBINATION BACK PACK, PORTABLE WATER HEATER AND GRATE OF THE CHARACTER REFERRED TO INCLUDING, AN ELONGATE, FLAT, NORMALLY VERTICALLY DISPOSED PLANAR FRAME HAVING UPPER AND LOWER ENDS, PARALLEL SIDES AND DEFINING FLAT FRONT AND REAR PLANES, SAID FRAME COMPRISING ELONGATE VERTICALLY SPACED HORIZONTALLY DISPOSED AND TRANSVERSELY EXTENDING TOP AND BOTTOM SPREADERS, AN ELONGATE SERPENTINE TUBULAR FLUID CONDUCTING MEMBER HAVING ELONGATE, LATERALLY SPACED, VERTICALLY DISPOSED AND UPWARDLY OPENING END PORTIONS, ELONGATE, LATERALLY SPACED, VERTICALLY DISPOSED INTERMEDIATE PORTIONS ARRANGED IN SPACED PARALLEL RELATIONSHIP BETWEEN THE END PORTIONS AND TURNED CONNECTING PORTIONS BETWEEN THE LOWER END OF EACH END PORTION AND THE LOWER END OF THE INTERMEDIATE PORTION ADJACENT THERETO AND BETWEEN THE UPPER ENDS OF THE INTERMEDIATE PORTIONS, SAID TOP SPREADER EXTENDING BETWEEN AND FIXED TO THE UPPER END PORTIONS OF THE END PORTIONS AND THE UPPERMOST PORTION OF THE CONNECTING PORTION BETWEEN THE INTERMEDIATE PORTIONS, SAID BOTTOM SPREADER FIXED TO AND EXTENDING BETWEEN THE LOWERMOST PORTIONS OF THE CONNECTING PORTIONS BETWEEN THE END AND INTERMEDIATE PORTIONS, SAID FRAME ADAPTED TO BE SHIFTED AND ARRANGED IN A HORIZONTAL PLANE, WITH ITS REAR PLANE DISPOSED UPWARDLY AND TO BE ENGAGED AND SUPPORTED ABOVE A FIRE, WHEN IN OPERATION AS A GRATE AND WATER HEATER; AN ELONGATE TUBULAR FLUID CONDUCTING EXTENSION TUBE SLIDEABLY ENGAGED IN EACH END PORTION OF THE FRAME FROM THE UPPER OPEN END THEREOF TO NORMALLY OCCUR WITHIN SAID END PORTIONS OF THE FRAME AND SHIFTABLE TO PROJECT AXIALLY