In 1893 the United States Patent an

In 1893 the United States Patent and Trademark Office granted to George S. Parker a patent for an improved feed desig n. Next year, on January 9, 1894, Parker patented a further, the overfeed version of the famed Lucky Curve feed (U.S. Patent No 512,319 ). The underfeed version (U.S. Patent No 606,231) came later. Ordinary feeds of the time had no buffering capacity, or the ability to absorb excess ink flow and hold the ink, releasing it Slowly as conditions warranted. The Lucky Curve solved d'it of excess ink left in the feed when the pen was capped and put in the user's pocket. The expansion of air within the pen when the bed in take in use a can drive out, making a blot on the the paper and, the sly, on the user's hands aswell. Parker's sysys was ingenious. He'n edd the feed farther into the barrel of the pen and the curved d the extension so it touched the wall, providing a Way for capillary action to drain the excess ink out of the feed.

The Lucky Curve feed so successful t-parker company company company 4d producing it for decades. Than Better other feeds it may have had, but the lucky Is Is still not capable of the buffering enough ink to prevent all Aus of blotting. Further siel of the feed to increase its buffering, in sing in in patent patent dd in 1905 (U.S. Pate nt No 778,997), resulted in the eye-catch notched shape has be be known as the Christmas Tree feed. (The feed edder is a later version, with the h-h end spend to the food the sing bar in a button-filling pe n.)