the apparatus of the invention as illustrated in fig6 and 7 of the drawings dispenser unit 46 here comprises a base assembly 62 that includes a base 63 having a forward portion 63 a and a rearward portion 63 b as indicated in fig7 of the drawings rearward portion 63 b is provided with a feed unit receiving chamber 65 while forward portion 63 a is provided with a generally key hole shaped opening 64 the purpose of which will presently be described receivable within feed unit receiving chamber 65 is the previously identified feed unit 46 that includes an upstanding dispensing tower 66 having an interior chamber 66 a fig7 that in the manner shown in fig6 and 7 functions to hold the plurality of stacked cover dispensing units 44 as best seen in fig7 to insure correct alignment of the feed unit 46 base 63 of base assembly 62 is provided with a pair of index slots 63 c that closely receive a pair of indexing protuberances 46 a formed on feed unit 46 fig6 for a purpose presently to be described base 63 is also provided with a guide channel 67 that communicates with feed unit receiving chamber 65 fig7 and functions to slidably receive a selected.