referring to fig2 , 4 , and 5 , the cradle , referenced by 3 , is made of cylindrical shape comprising a longitudinal through hole 31 , which receives a rod rest 2 having a forked tip 22 on a front end thereof and a vertical rack 21 near a rear end thereof to hold a fishing rod 1 , two tightening up screws 32 ; 32 &# 39 ; respectively threaded into two screw holes 33 ; 33 &# 39 ; thereof spaced at the top to hold down the rod rest 2 in the longitudinal through hole 31 , a mounting block 34 at the bottom fastened to a rotary member 36 by a fastening screw 35 . the mounting block 34 comprises a circular recess 343 , which receives a compression spring 344 , a horizontal through hole 341 through the center of the circular recess 343 , radial teeth 342 on one side thereof around the circular recess 343 . the rotary member 36 comprises an outward flange 364 horizontally disposed in the middle , a horizontal screw hole 361 above the outward flange 364 , radial teeth 365 ( not shown ) on one side thereof around the horizontal screw hole 361 , a bottom rod 362 , and an annular groove 363 around the bottom rod 362 . the fastening screw 35 comprises a screw rod 351 inserted through the horizontal through hole 341 on the mounting block 34 and the compression spring 344 and then threaded into the screw hole 361 to fasten the cradle 3 to the rotary member 36 . when the mounting block 34 and the rotary member 36 are fastened together , the radial teeth 343 on the mounting block 34 are meshed with the radial teeth 365 on the rotary member 36 , and the compression spring 344 is compressed between the mounting block 34 and the rotary member 36 . by loosening the adjusting screw 35 , the cradle 3 can be turned about the axis through the horizontal screw hole 361 to adjust the angle of inclination of the rod rest 2 , and therefore the angle of inclination of the fishing rod 1 is adjusted . the rotary member 36 is fastened to a tripod 4 by a lock screw 46 . the tripod 4 comprises a tripod socket 41 at the top , which receives the bottom rod 362 of the rotary member 36 , an outward flange 47 around the tripod socket 41 at the top on which the outward flange 364 of the rotary member 36 rests , a horizontal screw hole 42 into which the lock screw 46 is threaded and stopped at the annular groove 363 on the bottom rod 362 of the rotary member 36 to lock it in position , and three tripod legs 43 ; 44 ; 45 . by loosening the lock screw 46 , the rotary member 36 can be turned in the tripod socket 41 to adjust the position of the cradle 3 horizontally , and therefore the direction of the fishing rod 1 and the rod rest 2 is changed . there is an anchoring fork 5 fastened to one tripod leg 45 by a lock screw 52 . the anchoring fork 5 comprises a head 51 having a longitudinal through hole 55 and a side screw hole 511 in communication with the longitudinal through hole 55 at right angles , and two pointed prongs 53 ; 54 bilaterally extended from the head 51 in the same direction . when the tripod leg 45 is inserted into the longitudinal through hole 55 , the lock screw 52 is threaded into the side screw hole 511 and stopped against the tripod leg 45 , and therefore the anchoring fork 5 is fastened to the tripod leg 45 firmly . referring to fig6 the rotary member 36 may be directly fastened to the head 51 of the anchoring fork 5 to rod rest the cradle 3 on the anchoring fork 5 , by inserting the bottom rod 362 into the longitudinal through hole 55 and then tightening up the lock screw 52 . referring to fig7 therein shown is an alternate form of the anchoring fork . according to this alternate form , the two pointed prongs 53 ; 54 are separately made and then respectively fastened to two connecting rods 57 on the head 51 , and two retaining springs 56 ; 56 &# 39 ; are fastened inside the longitudinal through holes 55 at two opposite sides . as the tripod leg 45 inserts into the longitudinal through hole 55 , the retaining springs 56 ; 56 &# 39 ; are squeezed to deform , causing the tails 561 ; 561 &# 39 ; thereof to retain the tripod leg 45 in position . therefore , this alternate form eliminates the arrangement of the side screw hole 511 and the lock screw 52 . referring to fig8 and 9 , a mounting assembly 6 may be used and fastened to the side of a boat to hold the rotary member 36 and the cradle 3 . the mounting assembly 6 comprises a substantially l - shaped mounting shaft 60 having a tension clamp 64 on the vertical shaft section thereof 63 , a series of square holes 67 and a series of through holes 65 on the horizontal shaft section 66 thereof at two opposite sides . the through holes 64 and the square holes 67 are respectively aligned . there is provided a mounting - shaft plate 61 fastened to either square hole 67 by a fastening screw 62 . the mounting - shaft plate 61 has a screw hole 611 on a top square block 612 thereof . by fitting the top square block 612 into either square hole 67 and then threading the fastening screw 62 through the corresponding through hole 65 on the horizontal shaft section 66 into the screw hole 611 on the top square block 612 , the mounting - shaft plate 61 is fastened to the horizontal shaft section 66 of the mounting shaft 60 . when the mounting shaft 60 is placed on the side 7 of a boat with the mounting - shaft plate 61 attached to the side 7 of the boat at one side , the tension clamp is turned from the opposite side , and therefore the mounting assembly 6 is fastened to the side 7 of the boat .
a rod rest supporting device includes an tripod having a tripod socket , a rotary member mounted in the tripod socket and locked by a lock screw , a cradle fastened to the rotary member by a fastening screw to hold a rod rest , on which a fishing rod rests , wherein the rotary member can be turned on the socket of horizontally when the lock screw is loosened ; the cradle can be turned on the rotary member vertically when the fastening screw is loosened .