fig1 - 3 illustrate the simplest form of a fishing line release using the basic inventive concepts of the invention . in these figures , the line release is illustrated at 10 and includes , with reference to fig1 an upper jaw member 12 and a lower jaw member 14 . each of the jaw members includes an interconnected end 16 , and a free end 18 which is capable of opening and closing for receiving the fishing line , not shown . the interconnected ends 16 are interconnected by a rivet 20 extending through holes 22 , and the free ends 18 of the jaw members include the resilient pads 24 between which the fishing line is received . the central regions of the jaw members is indicated at 26 . the aforementioned fishing line release structure described above is substantially identical to that shown in my u . s . pat . no . 4 , 698 , 933 . preferably , the jaw members 12 and 14 are molded of a synthetic plastic material such as acetal resin sold under the trademarks delrin by dupont company , or celcon as sold by the celanese corporation . the jaw members 12 and 14 are of identical construction , and preferably , incorporate the line positioning devices disclosed in u . s . pat . no . 4 , 698 , 933 . in accord with the inventive concepts , the jaw member central regions 26 , at their inner sides , are each provided with an elongated recess 28 . the recesses 28 , lengthwise , are parallel to the length of the associated elongated jaw member and are defined by sides 30 and base surfaces 32 , which are of a generally planar configuration . as will be appreciated from fig1 - 3 , a rounded detent projection 34 extends from each base surface 32 and is located at the end of the recesses 28 closest to the free ends 18 . a coil compression spring 36 is located between the jaw member central regions 26 within the recesses 28 , and being under compression endeavors to bias the jaw member central regions 26 away from each other . due to the offset relationship of the free ends 18 , the biasing force of the spring 36 causes the pads 24 to engage each other , and hence , the spring 36 produces the line gripping force on the fishing line , not shown , located between the pads 24 . the dimension of the detent projection 34 is such that the projections 34 will be received within the spring 36 , as apparent from fig1 and 2 . accordingly , the projections 34 will tend to locate the spring 36 within the recesses 28 as shown in fig1 and 2 wherein the spring 36 will be located at its greatest distance from the jaw member interconnected ends 16 . in this position of the spring 36 the biasing force imposed upon the jaw members 12 and 14 by the spring to close the pads 24 is the greatest , and with the spring 36 in the full line position of fig1 the release 10 is adjusted for its maximum line release tension . the mounting holes 38 formed in the jaw members 12 and 14 permits the release 10 to be attached to the associated fishing tackle system , not shown . by inserting a small screwdriver blade , or similar slender tool , between the jaw member central regions 26 the spring 36 may be shifted toward the interconnected ends 16 to the dotted line position shown in fig1 . the shifting of the spring 36 to the right causes the spring ends to ride over the detent projections 34 and locate the spring closer to the interconnected ends 16 , which reduces the biasing force tending to the close the jaw members , and reduces the fish line clamping pressures formed by the pads 24 . accordingly , it will be appreciated that in the embodiment of fig1 - 3 by the use of a single spring 36 , two clamping pressures can be produced at the pads 24 permitting the line release 10 to be employed with a greater variety of fishing tackle , and sizes of fish , than is possible with fish line releases having non - adjustable tension producing springs . the embodiment of fig4 - 8 is capable of producing even greater variations in the line release tension than the embodiment of fig1 - 3 , and this second embodiment eliminates the need for a special tool to position the compression spring as desired . in fig4 - 8 , the line release is generally indicated at 40 , and with reference to fig4 an upper jaw member is illustrated at 42 , while the lower jaw member is shown at 44 . basically , the 12 release 44 is generally similar to the line release shown in u . s . pat . no . 4 , 698 , 933 , and the jaw members are interconnected at ends 46 and each includes a free end 48 upon which the resilient line holding pads 50 are mounted . at their interconnected ends 46 , the jaw members 42 and 44 include aligned holes 52 which receive the bolt and screw 54 . the interconnected ends 46 also include the aligned mounting holes 56 which permit the line release to be attached to the tackle system , not shown . the jaw members 42 and 44 each include a central region 58 defined by lateral edges 59 , fig5 the lateral edges 59 being substantially parallel to each other . the inner side of each central region 58 is formed with a recess , the recess 60 being defined in the jaw member 42 , while the recess 62 is formed in the jaw member 44 . the recesses 60 and 62 are of a longitudinal configuration extending in the direction of the length of the associated jaw member , and the recess 60 includes the flat base surface 64 while the recess 62 includes the flat base surface 66 . the recesses are laterally defined by edges 68 which are in opposed parallel relationship to each other . a plurality of detent cavities 70 are formed in the recess base surface 66 , fig4 and 5 , and the detent cavities 70 are longitudinally spaced with respect to each other and serve to position the spring carrier , as described below . the spring carrier 72 is preferably formed of a synthetic plastic material and is slidably located within the recesses 60 and 62 . the spring carrier 72 includes spaced parallel sides 74 , a top surface 76 , and a flat bottom surface 78 . extensions or wings 80 project from the carrier sides 74 and each has a free end which extends beyond the jaw member central region lateral edges 59 , as will be appreciated from fig5 and 6 . a bore 82 , fig8 is defined in the carrier top surface 76 , and receives the coil compression spring 84 whose upper coil engages the base surface 64 of the recess 60 . a projection detent 86 is centrally defined on the carrier bottom surface 78 . the configuration of the projection 86 substantially corresponds to the configuration of the detent cavities 70 . as will be appreciated from fig4 - 6 , the spring carrier 72 is received within the recesses 60 and 62 . the rectangular configuration of the spring carrier locates the carrier sides 74 in close relationship to the recess edges 68 , and this relationship will prevent the carrier 72 from rotating relative to the jaw members . the upper coil of the spring 84 slidably engages the base surface 64 of recess 60 , and the spring biases the carrier bottom 78 against the base surface 66 of recess 62 . in this manner the biasing force produced by the spring 84 tends to separate the jaw member central regions 58 causing the fish line holding pads 50 to close and frictionally engage the fish line , not shown . adjustment of the location of the spring 84 between the jaw members 42 and 44 is accomplished by grasping the ends of the carrier handles or wings 80 which extend beyond the lateral edges 59 of the jaw members . if the fisherman desires that the pads 50 grip the fish line with greater force to increase the line release tension the spring carrier 72 is moved toward the free ends 48 . if a reduced release pressure is desired , the carrier 72 is moved to the right , fig4 toward the jaw member interconnected ends 46 . as the spring carrier 72 slides within the recesses 60 and 62 the spring 84 will bias the carrier toward the recess base surface 66 and the projection detent 86 will sequentially engage and then ride out of a detent cavity 70 . upon the carrier 72 being located as desired the projection detent 86 will be located within the selected cavity 70 , and the force of the spring 84 will maintain the detent 86 within the desired cavity 70 . therefore , it will be appreciated that the spring 84 functions in the dual capacity of biasing the jaw members 42 and 44 relative to each other as well as maintaining the engagement of the spring carrier detent 86 with a cavity 70 . the use of the handle wings 80 substantially simplifies the adjustment of the line release spring as compared to the embodiment of fig1 - 3 , and due to the plurality of detent cavities 70 , eight being illustrated , fine adjustment of the line release characteristics can be made . as shown in fig4 pivoting of the jaw members 42 and 44 is facilitated by the use of convex surfaces 88 adjacent the bolt 54 . the convex surfaces 88 are generally cylindrical in configuration having a longitudinal axis perpendicularly disposed to the length of the jaw members . accordingly , the surfaces 88 will engage in line contact . the holes 52 extend through the surfaces 88 , and as the diameter of the holes 52 is larger than the diameter of the shank of the bolt 54 extending therethrough , sufficient clearance exists between the bolt 54 and the holes 52 to permit the desired pivoting action between the jaw members 42 and 44 as they are opened and closed by the application of finger pressure to the central regions 58 . the rocking or rolling line contact between the surfaces 88 assures a smooth jaw pivoting action , and the bolt 54 will maintain the surfaces 80 in line contact with each other . from the above description it will be appreciated that the concepts of the invention permit variable fish line release holding forces , and tension release forces , to be achieved merely by locating the coil compression spring as desired within its associated recesses . the practice of the invention eliminates the necessity for the fisherman to stock a large number of line releases depending on the desired release tension , and it is appreciated that various modifications to the inventive concepts may be apparent to those skilled in the art without departing from the spirit and scope of the invention .
a fish line release using a pair of elongated jaw members interconnected at one end and having free ends movable between fish line holding and release positions . the jaw members are resiliently biased toward the closed line holding position by a coil compression spring and the spring is displaceable within jaw member recesses to adjust the distance of the spring from the jaw members &# 39 ; interconnected end and thereby adjust the line holding pressure or tension . detent means located within the spring receiving recesses locate and maintain the spring as desired , and in an embodiment the spring is located within a carrier having handles to facilitate spring positioning . convex jaw member engaging surfaces facilitate relative pivotal jaw movement .