Method of flexure mounting print hammers

Claim 1

THE METHOD OF MOUNTING A PLURALITY OF SPACED PRINT HAMMERS ON A SINGLE BASE, EACH HAMMER BEING SUPPORTED ON A PAIR OF FLAT FLEXURE SPRINGS, COMPRISING THE STEPS OF FABRICATING EACH OF SAID PRINT HAMMERS AND SAID BASE WITH A PAIR OF SPACED HOLES AND WITH CORRESPONDING SLOTS, EACH SLOT HAVING PARALLEL WALLS AND COMMUNICATING BETWEEN AN EXTERNAL SURFACE AND A HOLE, SAID HOLES AND COMMUNICATING SLOTS TRAVERSING THE WIDTH OF SAID BASE AND PRINT HAMMERS RESPECTIVELY, ARRANGING SAID FLEXURE SPRINGS IN TWO SUBSTANTIALLY IDENTICAL GROUPS EACH POSITIONED IN A PLANE SPACED IN ACCORDANCE WITH THE DESIRED SPACING OF SAID PRINT HAMMERS AND WITH THEIR CORRESPONDING ENDS ALIGNED, POSITIONING EACH SET OF CORRESPONDING SPRING ENDS IN EACH PLANE BETWEEN THE FLAT SURFACES OF A PAIR OF WIRES OF SUBSTANTIALLY SIMICIRCULAR CROSS-SECTION, EACH OF SAID WIRES HAVING A PREDETERMINED LENGTH IN EXCESS OF THE WIDTH OF SAID BASE, SOLDERING EACH SET OF SPRING ENDS TO SAID WIRE PAIRS TO FORM A PAIR OF PARALLEL PINS CONNECTING OPPOSITE ENDS IN EACH GROUP OF SPRINGS PAINTING SAID EXTERNAL SURFACE, THE INTERIOR SURFACES OF SAID HOLES AND SLOTS, SAID PINS AND THE END PORTIONS OF SAID FLEXURE SPRINGS WITH A RUBBER-ADHESIVE COMPOUND, INSERTING EACH OF SAID GROUPS IN AN INJECTION MOLD OPENING TO ONE SIDE, SAID MOLD HAVING BORES FOR ACCURATELY LOCATING SAID PINS AND FURTHER INCLUDING PREFORMED CAVITIES FOR ACCEPTING SAID BASE, SAID PRINT HAMMERS AND SAID FLEXURE SPRINGS RESPECTIVELY, THE CAVITIES FOR SAID FLEXURE SPRINGS MERGING INTO SAID BASE AND PRINT HAMMER CAVITIES RESPECTIVELY, PLACING SAID BASE IN SAID MOLD BY SLIDING ITS PAIR OF HOLES AND CORRESPONDING SLOTS OVER THE APPROPRIATE PINS AND SPRINGS RESPECTIVELY TO A POSITION WHERE SAID FLEXURE SPRINGS EXTEND FROM SAID SLOTS, PLACING SAID PRINT HAMMERS IN SAID MOLD INTERLEAVED WITH SHIM METAL SPACERS BY SLIDING EACH PAIR OF PRINT HAMMER HOLES AND THE CORRESPONDING SLOTS OVER APPROPRIATE PINS AND SPRINGS RESPECTIVELY TO A POSITION WHERE EACH HAMMER IS ALIGNED WITH A PAIR OF SPRINGS FROM DIFFERENT GROUPS AND EXTENDING FROM SAID SLOTS, CLOSING SAID MOLD AND INJECTING RUBBER UNDER PRESSURE IN THE VICINITY OF SAID HOLES TO BOND SAID PINS AND FLEXURE SPRINGS TO SAID INTERIOR AND EXTERNAL SURFACES. VULCANIZING SAID RUBBER WITHIN SAID MOLD, REMOVING THE BONDING PARTS FROM SAID MOLD AND STRIPPING ANY EXCESS RUBBER THEREFROM, REMOVING SAID SHIM METAL AND CUTTING SAID PINS APART BETWEEN SUCCESSIVE PRINT HAMMERS, AND MACHINING OFF PIN PORTIONS PROTRUDING FROM SAID PRINT HAMMERS AND FROM SAID BASE.