in a preferred embodiment of the invention bail 270 mounted on bail arms 260 and 280 is manually pivoted to the casting position and is automatically pivoted ( re - pivoted ) to the retrieve position . the bail assembly 271 and line roller 272 are mounted in bail arm hole 262 by means of screw 274 . the rotor 230 has a central deck 236 with a front projecting open cylinder 237 extending toward the front of the reel with spool 290 surrounding a major portion of the cylinder 237 . extending from the deck 236 toward the back 19 of the reel housing 10 is a back projecting open cylinder 238 ( fig2 ) that substantially surrounds the front spool end 25 of the housing 10 including the front face cam 26 and trip lever retainer washer 76 , as shown in fig2 . the rotor ears 231 and 232 are part of the exterior surface 252 of cylinder 238 with radial passage 239 extending from the bowl 253 ( defined by the back cylinder 238 ) into the cavity 240 of the l - shaped rotor ear 231 . a partition 244 divides the cavity 240 into a passage section and a bail arm mounting section . the bail arm 260 is pivotally secured in the cavity 240 to the post 249 by means of screw 281 and washer 282 as shown in fig8 . on the inside or underside surface 263 of the bail arm 260 as shown in fig5 is a sloping cam surface 261 and an adjacent trip ramp 264 . the trip ramp 264 has a flat dwell portion 267 and a steep sloping drop off portion 266 . a profile of the cam surface 261 - trip ramp 264 projecting outwardly from the underside surface 263 is depicted in fig5 a . surface 261 and ramp 264 comprise approximately only one - half or 180 ° of the circumferential surface 263 located around hole 265 . when the bail arm 260 is rotated to the casting position , its rotational motion is limited by the cam edge 261a contacting stop 259 located in the bail mounting section of the cavity 240 . and , when the bail 270 is pivoted to the retrieve position , the trip ramp 264 contacts the stop 259 limiting the motion of the bail arm 260 . as shown in fig2 and 10 - 12 , a face cam 26 can be part of the housing 10 with the cam 26 having a minor radius 256 ( fig1 ) and a major or maximum radius 255 . the cam rise , the angular displacement 257 on the cam 26 of the change from the minor radius 256 to the maximum radius 255 , and the cam fall , the angular displacement 258 on the cam 26 of the change from the major radius 255 to the minor radius 256 are shown as being substantially equal ; however , they may be altered , if desired . an elongated trip lever 220 is mounted on the back of the deck 236 in the bowl 253 . the lever 220 has a cutout section 223 ( fig6 ) enabling the lever 220 to slide back and forth clearing the hub 250 . the trip end 221 contacts the underside 263 of bail arm 260 before the stop 224 contacts the hub 250 . the trip end 221 of the lever 220 is mounted in the cavity 240 adjacent and in constant contact with either the bail cam 261 or the trip ramp 264 . a cam follower 222 is mounted at the other end of the lever 220 and projects into the area formed between the deck 236 , the back cylinder 238 and the front face 25 which is defined as the pocket 254 ( fig7 and 8 ). trip lever 220 has a hole 225 to which is connected one end of the spring 235 which passes partially through an elongated slot 242 in deck 236 . the other end of the spring 235 is connected to post 243 on deck 236 . thus , the cam follower 222 is constantly being forced radially inwardly toward the central axis 2 and the trip end 221 is concomitantly being forced radially outwardly against the cam 261 or the trip ramp 264 in cavity 240 by spring 235 . stub 241 ( fig2 and 6 ) on deck 236 provides a guide means for lever 220 . in the cavity 240 the partition 244 has a slot 248 that also acts as a guide means for the trip end 221 of lever 220 . the combination of guide means 241 and 248 prevent the lever 220 from twisting or rotating relative to the deck 236 . as illustrated in fig7 when the bail 270 is in the retrieve position , the trip end 221 is forced radially inwardly by the cam 261 toward the axis 2 and the cam follower 222 is forced radially outwardly from the axis 2 . the relative position of the trip end 221 with respect to the cam 261 is indicated by dotted lines designating position no . 1 on the cam profile shown in fig5 a . the rotor 230 , the rotation of the cam follower 222 and the cam 26 are all coaxial with respect to the center axis 2 . when the rotor 230 rotates , the follower 222 will trace a path with a radius 251 around axis 2 ; radius 251 being longer than radius 255 of the cam 26 and thus the follower will not contact the cam 26 , as illustrated in fig1 . when the bail 270 is in the casting position , as illustrated in fig6 and 9 , the spring 235 forces the trip end 221 against the dwell portion 267 of the trip ramp 264 and radially outward from the axis 2 with the stop 224 bearing against hub 250 . concomitantly the follower 222 moves radially inwardly towards the axis 2 . as shown in fig1 and 11 , the follower 222 traces a partial rotational path around the axis 2 with radius 226 , which is larger than radius 256 but smaller than radius 255 . in the casting position , the trip end 221 is against the dwell 267 with the side of the end 221 locked against the drop off 266 preventing the rotation of the bail arm . the relative location of the end 221 is depicted by dotted lines on the cam profile of fig5 a and designated as position no . 2 . the relative positions of the rotor 230 , the trip lever 220 with the cam follower 222 and the face cam 26 are shown in fig1 just after the bail has been positioned by the self - centering mechanism and cocked to the casting position . with the bail in the casting position and a desire by the fisherman to retrieve the line , the crank handle 44 is rotated so that the rotor 230 and the follower 222 rotate clockwise about the axis 2 , the path traced by follower radius 226 indicates that the follower 222 contacts the cam 26 at point 226a . as the rotor 230 continues to revolve about axis 2 , as shown in fig1 , follower 222 is forced radially outwardly as it rides up the surface of cam 26 . this cam rise is depicted by the angular displacement 227 and is approximately equal to the angular displacement 229 of the cam fall . near the end of the rapid outward radial displacement of the follower 222 caused by the cam surface 26 , the trip end 221 is pulled away from the trip ramp 264 and contacts the incline of the cam 261 . with the drop off 266 no longer bearing against the trip end 221 , the spring 284 and , if desired , spring 283 cause the bail 270 to pivot to the retrieve position . position no . 3 of fig5 a and fig8 illustrate the location of the trip lever 220 and the bail arm 260 when the bail 270 is approximately halfway between the casting position and the retrieving position . in order to cause the rapid pivoting of the bail 270 from the casting position to the retrieve position the angular displacements 257 and 258 must be relatively small . the differences between the outer cam radius 255 and follower radius 226 and the angular displacements 227 and 228 must also be small . preferably the angular displacements 257 and 258 range from 25 ° to 60 ° and more preferably range from 40 ° to 50 °. it has been found that the angular displacements 227 and 229 for the radial movement of the cam follower 222 preferably should range from 10 ° to 25 ° and more preferably range from 12 ° to 16 ° in order to provide for rapid change from the casting position to the retrieving position . it is to be appreciated that the difference between the radius 226 and radius 255 must be greater than the rise of the drop off 266 between dwell 267 and the start of cam 261 or the bail cannot be pivoted from the casting position to the retrieving position . latch cover 234 is secured to the l - shaped ear 231 by means of screw 233 to enclose the passageway portion of the cavity 240 . if the self - centering bail mechanism were to be made inoperative and since the cam rise and fall are substantially the same , the rotor 230 can be rotated either in the clockwise direction or in the counterclockwise direction to rapidly change the bail 270 from the casting position to the retrieving position . however , it is customary to only rotate the rotor 230 in the clockwise direction . the trip lever retainer 76 has a flat sided hole and the rotor 230 has flats 247 in hole 246 that correspond to the milled flats on the pinion assembly 60 . this enables the retainer 76 to be mounted adjacent the hub 250 to provide axial support for the trip lever 220 . it should be understood , of course , that the specific forms of the invention illustrated and described herein are intended to be representative only , as certain changes and modifications may be made without departing from the scope of the teachings herein disclosed . accordingly , reference should be made to the appended claims in ascertaining the full scope of the invention .
this invention comprehends a mechanism that automatically moves a fishing reel bail from the open casting position to the closed retrieving position . mounted in the rotor is a trip lever arm that cooperates with a cam mounted on the face of the fishing reel housing . a trip lever arm also mates with a second cam mounted on the bail arm pivot means .