The first hub 15 includes means for receiving a roll 20 of {HEAD ~ tape} 21 and positioning a first edge 22 of {TAIL ~ a length} of the tape 21 withdrawn from the roll 20 at a first predetermined position axially with respect to the first and second hubs 15 and 16 with the opposite second edge of that withdrawn length of tape 21 projecting past the frame 12 
The first hub 15 includes means for receiving a roll 20 of { HEAD ~ tape } 21 and positioning a first edge 22 of { TAIL ~ a length } of the tape 21 withdrawn from the roll 20 at a first predetermined position axially with respect to the first and second hubs 15 and 16 with the opposite second edge of that withdrawn length of tape 21 projecting past the frame 12
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH