Springless time-lag fuses for motor circuits

Claim 1

A TIME-LAG FUSE COMPRISING IN COMBINATION: (A) A TUBULAR CYLINDRICAL CASING OF INSULATING MATERIAL; (B) A PULVERULENT ARE-QUENCHING FILLER INSIDE SAID CASING; (C) A PAIR OF TERMINAL CAPS EACH MOUNTED UPON ONE OF THE ENDS OF SAID CASING AND CLOSING SAID CASING; (D) A FUSE LINK OF SHEET METAL HAVING A RELATIVELY HIGH FUSING POINT ARRANGED INSIDE SAID CASING AND SUBMERSED IN SAID FILLER, SAID FUSE LINK INCLUDING A CENTER PORTION SITUATED IN THE CENTER REGION OF SAID CASING AND BENT TO FORM RADIALLY JUXTAPOSED SURFACE ELEMENTS EXTENDING PARALLEL TO THE GENERATRICES OF SAID CASING, AND SAID FUSE LINK BEING FASHIONED TO FORM OUTWARDLY FLARING ENDS BENT AROUND THE AXIALLY OUTER RIMS OF SAID CASING AND TURNED UPON THE OUTER SURFACE THEREOF AND COVERED BY SAID PAIR OF CAPS, SAID ENDS ON EACH END OF SAID FUSE LINK BEING SMALLER IN AGGREGATE CROSSSECTION THAN SAID CENTER PORTION AND THE PORTION OF SAID ENDS SITUATED BETWEEN SAID CENTER PORTION AND SAID AXIALLY OUTER RIMS HAVING AN AGGREGATE LENGTH LESS THAN SAID CENTER PORTION; AND (E) AN OVERLAY OF A METAL HAVING A RELATIVELY LOW FUSING POINT COEXTENSIVE WITH THE PERIMETER OF SAID CENTER PORTION AND SUPPORTED BY SAID CENTER PORTION FOR SEVERING SAID CENTER PORTION BY A METALLURGICAL REACTION UPON REACHING OF SAID RELATIVELY LOW FUSING POINT BY SAID OVERLAY.