with reference to fig1 - 8 , there is provided pursuant to the present invention a line tightening and fastening device ( generally designated as 1 ) for tightening a line r ( such as a rope ) by drawing a line tightening end r a therethrough ( e . g . see fig5 ) and for fastening or immobilizing line r onto the device 1 by drawing upon the line fastening end r b ( as illustrated by fig8 ), said device 1 comprising : a ) a first line looping section 3 for looping the fastening line r thereabout and applying a first biasing force ( illustrated as f 1 in fig8 ) by drawing the line fastening end r a onto looping section 3 ; b ) a second line looping section 5 for looping the line fastening end r a thereabout and applying an opposing biasing force ( f o as illustrated in fig8 ) to said first biasing force f 1 when said line fastening rope r b is drawn onto said second c ) lateral retaining means ( generally referenced as 7 ) for resiliently maintaining said first loop section 3 and said second loop section 5 in a lateral relationship with said lateral retaining means 7 affording a passageway 7a for tightening the line r within device 1 by drawing the line tightening end r a therethrough and for immobilizing the line r therewithin when drawing upon said line fastening end r b as illustrated in fig8 . in the preferred embodiments , the first looped section 3 and the second looped section 5 comprise a pair of eyelets ( 3 and 5 ) of irregular surfaces 3a and 5a ( shown in fig3 and 4 as rectangular rod stock with rectangular edges ) which serve to grippingly restrain line r onto eyelets 3 and 5 when the line fastening end r a is drawn against irregular surfaces 3a and 5a . with particular reference to fig8 the abrupt angular contours of rectangular edges 3a and 5a effectively serve as vectors for applying the opposing biasing forces ( f 0 and f 1 ) onto eyelets 3 and 5 to wedge line r therebetween upon drawing against fastening line end r b . eyelets 3 and 5 are depicted in the figures as being joined together by a springed clamping section ( depicted as 7d ) which serves as the lateral retaining means for maintaining eyelets 3 and 5 in a substantially lateral displacement while also affording , when laterally separated , a passageway 7a for emplacing and tightening line r therewithin . as may be observed by reference to fig7 and 8 , drawing upon the line tightening end r a permits line r to be drawn through loops 3 and 5 and between passageway 7a until tightened to the appropriate tightness . the depicted clamp 7 includes a pair of laterally extending arms 7b and 7c biased together by springed section 7d . springed clamp 7 is preferably constructed of spring steel or other durable and resilient material possessing sufficient spring so as to allow for eyelets 3 and 5 to be drawn or spread apart when an eyelet spreading force f s ( as depicted by fig8 ) is applied to springed clasp 7 . the entire device including arms 7b and 7c , springed section 7d and eyelets 3 and 5 may be directly fabricated by bending a stock material of sufficient structural spring and rigidity into the appropriate configuration as illustrated by the drawings . the device 1 , including the depicted springed clamp 7 and eyelets 3 and 5 , when properly threaded or wound for use as sequentially illustrated by fig5 - 8 , functions in a manner similar to a slip knot in that when the line tightening end r a is drawn , the springed clamp section 7d allows the line tightening end r a to be freely drawn through passageway 7a until rope r is tightened to the desired tautness , while tugging upon the line fastening end r b tautly draws eyelets 3 and 5 together and biases ( see f 0 and f 1 of fig8 ) the line r between eyelets 3 and 5 so as to knot and immobilize line r thereby . the springed clamp section 7d may be of a closed looped design , ( as depicted in the figures ), for accommodating an anchoring eye hook , staple , swivel , an adjoining fastening rope , etc . thereto . in the preferred depicted embodiments of the invention , the device 1 includes a forked handle section ( generally enumerated as 7 ) closed at one end ( springed section 7d ) and equipped with two outwardly and laterally extending prongs or arms 7b and 7c biased together by springed section 7d and the pair of laterally disposed eyelets 3 and 5 secured onto said arms 7b and 7c . eyelets 3 and 5 , when laterally separated from one another , provide an open passageway 7a for line r to pass between eyelets 3 and 5 and arms 7b and 70 . the forked arms 7b and 7c preferably converge inwardly to form a channeled v - section 7e which terminates onto eyelets 3 and 5 . the confluent , channeled configurement 7e of arms 7b and 7c in cooperative association with springed section 7d operatively retain eyelets 3 and 5 at the appropriate lateral orientation while also serving to more effectively guide the line tightening end r a onto passageway 7a . the line tightening end r a is unlocked or unknotted from device 1 by simply pulling in an unlocking direction a 1 with tightening and ultimate locking of the line tightening end r a being accomplished by drawing r b in a locking direction a 2 as illustrated by the arrow representations in fig7 . arms 7b and 7c are effectively biased together at eyelets 3 and 5 by springed section 7d . the preferred construction of device 1 involves lateral displacement of arms 7b and 7c at a sufficient distance so as to allow for line fastening end r b to be easily threaded onto passageway 7a and secured between eyelets 3 and 5 as shown in fig7 and 8 . by positioning lateral extending arms 7b and 7c so as to converge together in the form of a v - channeled section 7e , the channeled arms section 7e effectively serves as a self - threading channel for threading and securing the line fastening end r a within passageway 7a and between eyelets 3 and 5 . springed section 7d possesses sufficient tension or spring to effectively bias eyelets 3 and 5 together while also permitting eyelets 3 and 5 to separate apart when a separating force f s such as when the wedged line r is applied thereto as depicted by the illustrations of fig6 - 8 . the device should be constructed of materials possessing sufficient strength and rigidity so as to maintain eyelets 3 and 5 ( and preferably arms 7b and 7c ) in a substantially lateral alignment . by maintaining eyelets 3 and 5 in a substantially lateral relationship , the appropriate forces may then be applied to a properly threaded line r ( as illustrated by fig7 and 8 ) so as to permit line r to be tightened by drawing upon line tightening end r a or securely fastened by drawing tightly upon the line fastening end r b . eyelets 3 and 5 serve to retain the line r therewithin and preferably fabricated of a closed looped construction as depicted in fig2 and 5 - 7 . the device 1 may be appropriately constructed from a variety of materials ( e . g . plastic , metal , composites , etc .) possessing sufficient strength and rigidity to maintain the eyelets 3 and 5 at the appropriate lateral orientation when tightening and fastening a line r thereto . although the device 1 may be constructed of non - directional surfaced materials ( e . g . round materials ), directionally surfaced materials ( especially those constructed of a polygonal material with abrupt angular faced surfaces ) are preferred . such materials contribute strength by maintaining eyelets 3 and 5 in the appropriate biasing lateral relationship while also providing an effective biasing surface for line r to bias onto the device 1 . an irregular or edged surface permits the fastened line r to tenaciously grip onto eyelet 3 and 5 surfaces and apply the opposing biasing forces ( f 0 and f 1 ) as illustrated in fig8 . angular rod stock materials ( e . g . triangular , rectangular or square , hexagonal , octagonal , etc .) constructed of a relatively hard metals ( e . g . such half - hard cold rolled steel square stock ) appropriately bent ( as depicted in the figures ) so as to provide sufficient tension to bias the eyelets 3 and 5 together and maintain the eyelets 3 and 5 in a lateral relationship provide a particular effective material for fabricating eyelets 3 and 5 and the lateral retaining means 7 . the configuration and size of the v - shaped channel 7e of arms 7b and 7c channeling onto eyelets 3 and 5 will have a bearing as to whether or not line r may be effectively self - fed or slipped onto passageway 7a when the line tightening end r b is drawn between eyelets 3 and 5 as depicted by fig5 - 7 . if the lateral distance between arms 3 and 5 at the v - groove bend ( indicated as d 1 in fig1 ) is less than the lateral epicenter distance ( depicted as d 2 in fig1 ) from the arm bends to eyelet passageway 7a , line r may then be effectively channeled between eyelets 3 and 5 ( i . e . self - threading attributes ) when the line tightening end r a looped through eyelets ( 3 and 5 ) and between arms is drawn between eyelets 3 and 5 as illustrated by the sequential depiction of fig5 - 7 . the channeled configuration of arms 7b and 7c easily and effectively channels line r to a correct self - threaded position within passageway 7a and between eyelets 3 and 5 without necessitating a physical or manual separation of eyelets 3 and 5 from one another in order to thread a line r within a passageway 7a . the lateral distance d 1 between arm 7a and 7b is also preferably of a size sufficient so as to allow a line r to freely pass therebetween . the lateral distance d 1 may be modified ( as well as arm and eyelet size ) to match the diameter of the line r to be secured to device 1 . as previously indicated , the surface of the eyelets 3 and 5 is preferably irregular or directional as opposed to a non - directional surface such as provided by a circular surface . angular surfaces such as created by a polygonal structure ( e . g . triangular , rectangular , pentagonal , hexagonal , octagonal , etc .) afford greater strength and a more effective surface region for supporting and wedging line therebetween . a polyangular structure with opposing angular edges ( 3a and 5a ) provides pressure sites ( f 0 and f 1 ) for biasing the loops 3 and 5 tightly together by drawing upon the line fastening end r b . the depicted device 1 may be effectively used in fastening lines r about soft or resilient materials . when using device 1 to tighten and fasten upon such soft materials , the eyelets 3 and 5 may become embedded within the soft material . this may inhibit or prevent eyelets 3 and 5 from separating during the unlatching of line r therefrom . the depicted device 1 has been modified so as to include a configuration which permits the device 1 to be rotated ( while fastened ) about its major longitudinal axis . such a configuration will allow the device 1 to be rotated upon its side as illustrated in fig8 which in turn relieves any pressure applied onto eyelets 3 and 5 by the soft material so that eyelets 3 and 5 may then be easily separated and the line fastening end r a readily unfastened from passageway 7a by applying an unfastening force a 1 thereto . this modification may then be simply accomplished by creating a downwardly extending vertical bend 7 f within downwardly extending the arms 7b and 7c as illustrated by the side view of fig2 and in fig5 - 7 . the device 1 of this invention may be used to tighten and fasten a line r to the device 1 as illustrated by fig5 - 8 . the present invention accordingly provides a method for tightening and fastening a line r ( fitted with a line tightening end r a and a line fastening end r b ) to a line fastening device 1 comprised of a pair of laterally extending arms ( 7b and 7c ) biased together by a springed clamp section ( 7d ) and a pair of lateral disposed eyelets ( 3 and 5 ) respectively connected to said arms for looping and fastening the rope r thereto , said method comprising : a ) passing the line tightening end r a through said eyelets ( 3 and 5 ); b ) threading the line tightening end r a between said laterally extending arms ; c ) laterally inserting the line tightening end r a between said eyelets 3 and 5 ; and d ) tightening line r by drawing the line tightening end r a between said eyelets 3 and 5 until the line r is tightened sufficiently within said device 1 . line r may thereafter be securely fastened onto device 1 by drawing upon the line fastening end r b with sufficient force to firmly bias and secure line r between eyelets 3 and 5 . line r may be unfastened from the device 1 by reversing the aforementioned sequential steps . the line fastening device 1 of this invention may be effectively used to fasten onto a wide variety of flexible binders or tieing lines r . in general , if the line r may be knotted , it can then be used as a binding line r in the present device 1 . conventional binders r such as lines , ropes , strings , flexible cables , cords , fibers , threads , twine , straps , yarns , etc ., in diverse shapes ( e . g . circular , rectangular , ovular , flat , etc .) which possess sufficient flexibility to be threaded through and biased against the device 1 may be adapted for use with the device 1 . accordingly , flexible line fastening materials fabricated from a host of natural occurring and synthetically made materials may be tightened and fastened to the device 1 . synthetic fastening materials ( e . g . nylon , rayon , polyolefins , etc .) as well as those flexible line fasteners fabricated from natural materials ( e . g . leather , cotton , hemp , etc .) may accordingly be effectively used as a line r with the line fastener device 1 of this invention . the device 1 may be threaded with line r from either side , looped either forward or backward and emplaced between the loop from a forward or aft position . such alternative threadings may be applied provided the mode of operation of the device 1 by allowing the line r to be tightened or wedged between the loops remains unchanged .