in the art will appreciate that in some configurations it would be desirable to affix lugs on the lower belts in place of or in addition to fixation of the lugs on the upper belts those skilled in the art will appreciate that any materials can be used for the belts and lugs including but not limited to urethane rubber or any other suitable material which can provide an adequate coefficient of friction that is any material which can establish an adequate coefficient of friction sufficient to divert signatures output from the feed stage 102 can be used and should be selected based on a particular application e g speed of operation materials selected for the printable medium and so forth the number of lugs included on the respective belts can be adjusted accordingly depending on the particular application as a function of for example the number of signatures to be diverted at any given time as well as space requirements the number of lugs per belt associated with each signature to be diverted can also be adjusted as desired in the fig1 embodiment each of the upper belts 120 and 122 includes one lug per signature however each lug could be configured as a plurality of smaller lugs or as any protrusion s for establishing a desired coefficient of friction between the lug and the signature in contrast to the signature diverter described in the copending u s application ser no 09 020 644 the first and second drive devices are configured such that they receive the signatures 108 from the feed stage with a first velocity vector and then impart a second velocity vector to one of the.