a fly casting reel embodying the invention is designated 10 in fig1 . it comprises a frame 12 and a spool 14 . the frame includes a foot 16 and a side disc 18 extending up from a side of the foot . as best shown in fig3 a spindle 20 extends rightward from the center of the side disc 18 over the foot and spaced thereabove . the spindle 20 is tapered at its distal end 22 and formed with a conventional locking groove 24 . a line guard 25 extends out from the disc 18 above the spindle 20 . the spool 14 includes the outer side disc 26 and the inner side disc 28 held in spaced relation by a pair of side - by - side arbors 30 , 32 . the side discs 26 , 28 are centrally apertured and connected by a mounting bushing 34 . the two arbors are separated by a centrally apertured dividing wall 36 which has a diameter larger than the larger arbor 32 . the spool also comprises the usual quick - release cover 38 and quick - release lever 40 and the reeling knob 42 , all conventional . the arbors 30 , 32 are of different diameters as shown ( fig2 ) and the dividing wall 36 has a diameter larger than the diameter of the larger arbor 32 . as shown in fig4 and 6 , the dividing wall 36 is formed with a deflecting cut - out or notch 44 which extends part way down to the level of the larger arbor 32 . the notch is slanted in a direction opposing the reeling - in direction of rotation . the notch may also be in the form of a protrusion . in use , the spool 14 is inserted on the spindle 20 and locked in position by the lever or catch 40 in the customary fashion . the end of the backing line bl ( fig5 ) is tied to the larger arbor 32 and the spool is reeled to fill up the space between the side disc 26 and the dividing wall 36 . as the backing line partly fills the larger arbor 32 , at some point near the bottom of the notch 44 the fly line fl , secured to the end of the backing line bl , begins to accumulate . after a few rotations of the spool , the notch 44 picks up the fly line fl and the fly line shifts to the smaller arbor 30 . the fly line quickly fills the annular pocket surrounding the smaller arbor 30 . thereafter the fly line fills evenly on both sides of wall 36 up to its final capacity . during casting , the casting line cl is worked off the top layers of the spool and extends outward off the rod . when a strike occurs , the fish will run , stripping the fly line fl from the spool , the line fl easily moving through the notch 44 to the backing line on larger arbor 32 . if the fish continues away , the backing line bl may be drawn off the spool as necessary . the fisherman can rapidly reel in the backing line using the larger diameter of the larger arbor 32 . variations in the invention are possible . thus , while the invention has been shown in only one embodiment , it is not so limited but is of a scope defined by the following claim language which may be broadened by an extension of the right to exclude others from making , using or selling the invention as is appropriate under the doctrine of equivalents .
a spool for a fishing reel comprising at least two side - by - side arbors of different diameters separated by a dividing wall having a diameter larger than the diameter of the larger of the arbors .