housing member 12 outwardly of slots 26 and 28 respectively feeder 10 also includes an inner housing member 34 having an upper end 36 and a lower end 36 inner housing member 34 is comprised of a metal mesh material and has alternating first and second bands or segments 38 40 38 u2032 40 u2032 38 u2033 and 40 u2033 the bands 38 38 u2032 and 38 u2033 have perforations or openings formed therein which are the same size the bands 40 40 u2032 and 40 u2033 have perforations or openings formed therein which have the same size the perforations or openings in bands 40 40 u2032 and 40 u2033 are larger than the size of the perforations or openings in bands 38 38 u2032 and 38 u2033 bands 40 40 u2032 and 40 u2033 define feed openings inner housing member 34 has a pair of elongated recesses 42 and 44 formed therein which register with slots 26 and 28 of outer housing member 12 springs 46 and 48 are adapted to be partially positioned in the recesses 42 and 44 respectively and to be partially received in the slots 26 and 28 respectively as will be described hereinafter the numerals 50 50 u2032 and 50 u2033 refer to feed level control devices such.