followed by release of the lock which clamps the bag to the fixture 20 it can also be seen that the conduit or channel 16 encloses a cable 40 which extends from the trigger mechanism 14 to the crank 23 of the bail 17 via the lever 22 fig3 illustrates the crank 23 of bail 17 connected to one end of the lever 22 with the opposite end of the lever connected to the end of cable 40 the opposite end of the cable 40 terminates with the trigger 14 of the trigger mechanism whereby the trigger 14 pivots about a pivot connected with the handle 12 as represented by numeral 41 in fig2 referring now in detail to fig4 it can be seen that the spindle 33 of the roller 26 is captured at each end by a disk 32 the disks 32 adjacent to the fixtures a 1 a 2 are recessed in a tapered compartment 42 44 a the extreme ends of spindle 33 are inserted into bores 44 in the body 11 and 44 a in the handle it can be seen that the fixture 20 can be rotated with respect to the end of body 11 by means of a pin 45 traveling within a slot 46 in the fixture 20 the pin 45 is attached to the body 11 while the slot is in the fixture and the fixture can rotate either right or left as indicated by numeral 21 in.