Patent ID: 8459496

Claim:
A machine, for selectively dispensing a plurality of items, which comprises: at least one tubular cartridge, said cartridge forming an elongated channel having a frontal dispensing aperture, a back-loading aperture, a cross-section commensurate with a maximal cross-section of one of said items and a given interior diameter; a source of pressurized fluid; conduits feeding said pressurized fluid into said tubular cartridge through said back aperture to propel said items toward said dispensing aperture; and a toggling mechanism alternately allowing dispensing of a first one of said items and holding back a second one of said items next in line behind said first one; wherein said mechanism comprises: a first barrier movable from a locking position across said frontal aperture to a releasing position clear of said channel; a second barrier movable from a clearing position clear of said channel to a retaining position across said frontal aperture; said first and second barriers being togglably linked to alternately move said second barrier to said retaining position when said first barrier is moved into said releasing position, and to said clearing position when said first barrier is moved into said locking position.