Humming bird feeder

Claim 1

IN A HUMMING BIRD FEEDER, THE COMBINATION OF: VACUUM TRAPPED SUGAR SOLUTION RESERVOIR MEANS HAVING AN ESCAPE PASSAGE NEAR THE LOWER END THEREOF; A FEED BOWL DISPOSED TO RECEIVE SOLUTION DISCHARGED OUTWARDLY FROM SAID RESERVOIR MEANS THROUGH SAID ESCAPE PASSAGE, SAID FEED BOWL EXTENDING ABOVE THE LEVEL OF SAID PASSAGE SO AS TO EXCLUDE AIR FROM ACCESS TO THE LATTER EXCEPT WHEN SOLUTION IS REMOVED FROM SAID BOWL, AS BY FEEDING THEREFROM; A COVER FOR SAID BOWL HAVING AT LEAST ONE HOLE WHICH IS LARGE ENOUGH TO RECEIVE THE BILL OF HUMMING BIRD BUT TOO SMALL TO ADMIT THE BODY OF A SUGAR FEEDING FLYING INSECT, SAID COVER BEING SPACED ABOVE THE NORMAL LEVER OF SOLUTION MAINTAINED IN SAID BOWL BY THE VACUUM ACTION OF SAID RESERVOIR MEANS, A SUFFICIENT DISTANCE TO PREVENT SAID FLYING INSECTS REACHING SAID SOLUTION THROUGH SAID HOLE, SAID DISTANCE BEING SHORT ENOUGH HOWEVER TO PERMIT A HUMMING BIRD TO READILY FEED FROM SAID SOLUTION, BY EXTENDING HIS BILL THROUGH SAID HOLE, SAID BOWL HAVING A BOWL BOTTOM WHICH UNDERLIES SAID RESERVOIR MEANS AND HAS A HOLE UNDERLYING SAID RESERVOIR MEANS; A THREADED NECK WHICH IS SMALLER IN DIAMETER THAN SAID RESERVOIR MEANS AND IS INTEGRALLY FORMED THEREON TO EXTEND DOWNWARDLY THEREFROM, SAID NECK NEATLY FITTING AND EXTENDING THROUGH SAID HOLE; SCREW CAP MEANS ADAPTED TO BE SCREWES ONTO SAID NECK TO UNIT SAID BOWL WITH SAID RESERVOIR MEANS; AND SEAL MEANS, EFFECTIVE WHEN SAID CAP MEANS IS TIGHTENED ON SAID NECK, TO PRODUCE A LIQUID-TIGHT SEAL BETWEEN SAID CAP MEANS AND SAID BOWL, SAID CAP MEANS WHEN LOOSENED, WITH SAID FEEDER INVERTED, AFFORDING A MEANS FOR INTRODUCING A SUPPLY OF LIQUID BIRD FEEDING MATERIAL INTO SAID RESERVOIR MEANS.