Releasable non-slip attachment means for connecting fishing lines to down-rigger cables

{
  "publication_number": "US3959913A",
  "country": "US",
  "kind": "A",
  "title": "Releasable non-slip attachment means for connecting fishing lines to down-rigger cables",
  "abstract": "In one specific form, the apparatus is embodied as a tubular housing which fits in the hand of the user, with a trigger-like release arm protruding from a slot in the side of the housing to be pulled rearwardly by a finger of the user. The release arm retracts a spring-loaded plunger within the tubular housing so that the plunger head clears a slot extending midway into the housing from one side, such that a weighted downrigger cable or line may be readily slipped into the slot and the arm released to allow the plunger head to seat against that portion of the downrigger line within the slot in the tubular housing, thereby capturing and entrapping the downrigger line securely within the slot by a two-point engagement which securely holds the device in place without permitting it to slide along the line.",
  "claims": [
    "1. Apparatus for releasably and detachably securing a fishing line to a weighted depth-setting downrigger line, comprising: an elongated body defining guide surfaces for a movable plunger and establishing an axis for plunger movement, said body also defining indexing surfaces for seating said downrigger line transversely of said guide surfaces; tether line means for attaching a fishing line to said body; a movable plunger carried with said body and disposed for movement along said guide surfaces, said plunger having a head portion for engaging said downrigger line and entrapping same upon said indexing surfaces; means for urging said plunger into entrapping engagement with said line and for maintaining the plunger in such engagement to thereby attach said body to said downrigger line; and manually-operable means for releasing said plunger from its line-entrapping engagement to thereby enable release of said body from the downrigger line.",
    "2. The apparatus of claim 1, wherein said body comprises an elongated generally cylindrical element having a longitudinal axis and said plunger movement axis generally lies along such longitudinal axis, said indexing surfaces comprising at least a portion of a recess in said cylindrical element disposed generally transversely of the said longitudinal axis thereof.",
    "3. The apparatus of claim 2, wherein said recess comprises a slot extending laterally into said cylindrical element.",
    "4. The apparatus of claim 3, wherein said cylindrical element comprises a tubular structure having a wall-forming structure which at least partially encloses said plunger.",
    "5. The apparatus of claim 4, wherein said slot extends into said tubular wall structure from one side thereof and is oriented to intersect the longitudinal axis of the cylindrical element at an acute angle.",
    "6. The apparatus of claim 1, wherein said indexing surfaces comprise a pair of line-receiving seat areas spaced apart from one another by a distance on the order of at least twice the diameter of said downrigger line, said plunger head portion having sufficient acting area to engage the downrigger line at each of said seat areas.",
    "7. The apparatus of claim 6, wherein said line-receiving seat areas comprise end extremities of a slot extending laterally into said body.",
    "8. The apparatus of claim 7, wherein said body comprises a tubular structure having a wall-forming structure which at least partially encloses said plunger, said slot extending into said wall structure.",
    "9. Apparatus for releasably and detachably securing a fishing line to a weighted depth-setting downrigger line, comprising: means defining a pair of seat areas for receiving said downrigger line at a pair of spaced points along its length, said seat areas being spaced apart from one another by a distance on the order of at least twice the diameter of the downrigger line; means for engaging said downrigger line at said spaced points along its length and entrapping such line at such points against said seat areas; and manually releasable means for holding said line-engaging means against the downrigger line with sufficient force to hold said apparatus immovably in place on the downrigger line against forces acting upon the apparatus during fishing operation as a result of connecting a fishing line to the apparatus and pulling the fishing line and the apparatus through the water by means of the downrigger line.",
    "10. The apparatus of claim 9, wherein said means for engaging said downrigger line at said spaced points comprises a plunger member.",
    "11. The apparatus of claim 9, wherein said means defining said seat areas comprises a cylindrical element having a lateral slot therein, said seat areas comprising end portions of such slot.",
    "12. The apparatus of claim 11, wherein said slot extends into said cylindrical element from one side thereof and is oriented to intersect the longitudinal axis of the cylindrical element at an acute angle.",
    "13. Apparatus for releasably and detachably securing a fishing line to a weighted depth-setting downrigger line, comprising; means defining a pair of seat areas for receiving said downrigger line at a pair of spaced points along its length; means for engaging said downrigger line at said spaced points along its length and entrapping the line at such points against said seat areas; an elongated body extending away from said seat areas generally transversely of said downrigger line; means for attaching a fishing line to said elongated body at a point along the length of the latter spaced from the downrigger line by a distance at least greater than the distance between said seat areas; and manually releasable means for holding said line-engaging means against the downrigger line with sufficient force to hold the apparatus in place on the downrigger line against forces acting upon said fishing line during fishing operation.",
    "14. Apparatus for releasably and detachably securing a fishing line to a weighted depth-setting downrigger line comprising: an elongated body defining guide surfaces for a movable plunger and establishing an axis for plunger movement, said body also defining indexing surfaces for seating said downrigger line transversely of said guide surfaces; tether line means for attaching a fishing line to said elongated body; a movable plunger disposed for movement along said guide surfaces and having a head portion for engaging said downrigger line and entrapping same upon said indexing surfaces; means for urging said plunger into entrapping engagement with said line and for maintaining the plunger in such engagement to thereby attach said body to said downrigger line; said body defining a butt portion at a point along the length of the body spaced away from said indexing surfaces; and manually-operable means for releasing said plunger from its line-entrapping engagement to thereby enable release of said elongated body from the downrigger line; said manually operable means including an arm projection extending laterally from the body at a position between said butt and said indexing surfaces; and resiliently biased means operatively coupled between said arm projection, said plunger and said butt portion of said body, said means arranged to cause withdrawal of said plunger from entrapping engagement with said downrigger line upon relative movement between said butt portion and said arm projection.",
    "15. The apparatus of claim 14, wherein said arm projection is of a shape to be engageable by the human finger and said butt is of a size and shape adapted to be held in the hand, said butt and arm being spaced apart a distance allowing for engagement of the arm projection by at least one of the fingers of the same hand holding the butt portion.",
    "16. The apparatus of claim 15, wherein said arm projection is relatively movable along said body.",
    "17. The apparatus of claim 16, wherein said arm projection is coupled to said plunger and withdraws the same from said downrigger line upon said relative movement of the arm projection toward the butt.",
    "18. The apparatus of claim 17, wherein said plunger and said body are substantially coaxial and mutually telescopable, and said indexing surfaces comprise at least one transverse opening in the body.",
    "19. The apparatus of claim 18, wherein said body is generally tubular and said plunger is disposed within the body, said body having an opening in its tubular wall, and said arm projection extending from said plunger through said wall opening.",
    "20. The apparatus of claim 19, wherein said transverse opening comprises a lateral slot extending into said tubular wall, the end portions of said slot comprising said indexing surfaces.",
    "21. The apparatus of claim 20, wherein said plunger has a head portion at an end opposite said arm projection, said head portion having a width which approximates the inside diameter of said tubular wall to thereby engage most of the downrigger line located between said indexing surfaces.",
    "22. The apparatus of claim 21, wherein said plunger head is spring-loaded toward said downrigger line between the indexing surfaces.",
    "23. The apparatus of claim 1, and including a flexible line attached near one end to said elongated body, a fishing line release clip attached near the other end of said flexible line, said clip comprising a pair of jaws pivotally coupled to each other and having resilient loading means forcing the jaws together at one of their ends and apart at their other end, said loading means including at least one resilient band encircling said jaws near said one end thereof, and said clip also including resilient friction surface means attached to at least one of said jaws at the said one end thereof and disposed between said jaws at such end for frictionally but releasably engaging a fishing line therebetween.",
    "24. A fishing line release clip for frictionally but releasably gripping a fishing line to couple it to a weighted downrigger line or the like, said clip comprising in combination: A pair of jaws pivotally coupled to each other and having resilient loading means forcing the jaws together at one of their ends and apart at their other end, said loading means including at least one resilient band encircling said jaws near said one end thereof, and said clip also including resilient friction surface means attached to at least one of said jaws at the said one end thereof and disposed between said jaws at such end for frictionally but releasably engaging a fishing line therebetween, said jaws having at least one opening in their said other end for receiving a tether line therethrough for attaching the clip to said downrigger line.",
    "25. The fishing line clip of claim 24 wherein said jaws at said one end and said resilient surface friction means attached to said jaws at said end have mutually cooperating shapes which produce a flat area of contact between said jaws at said one end to afford more than a mere line of contact for engaging said fishing line.",
    "26. The apparatus of claim 24, wherein said resilient friction surface means comprises a band encircling at least one of said jaws at said one end."
  ],
  "description_excerpt": "This invention relates to fishing apparatus, particularly of the type used in sport fishing where, in order to troll at depth levels of fifty to perhaps two hundred feet or more, a heavy weight at the end of a small winch cable (usually called a \"downrigger\") is used to sink a lure-carrying trolling line to the desired depth, and to maintain it at such depth. Typically, the fishing line is releasably attached to the weighted downrigger line so that when a strike occurs the fishing line releases from the downrigger cable, leaving only the fish and lure attached to the fishing line, and freeing the latter from the heavy downrigger weight (which remains attached to the downrigger cable), for greater sporting action. Typically, such trolling equipment is used by having a permanently-mounted fitting in the downrigger line, usually at its bottom, near the weight, to which the fishing line is clipped or otherwise fastened, and thereby attached to the downrigger cable. For example, U.S. Pat. No. 3,778,918 shows a device with a ring at each end for direct attachment to the downrigger line at one end and the downrigger weight at the other end, with a medial portion of the device adapted to receive a pair of spaced, springloaded legs which form the release clip which is pulled away by the force of a strike to free the fishing line from the weight.\n\nIn such an arrangement, only a single fishing line can be used with each downrigger, and this has numerous disadvantages.",
  "cpc": [
    "A01K 91/08",
    "F16B 45/049",
    "Y10S 24/908",
    "Y10T 24/44744",
    "Y10T 24/44957"
  ],
  "ipc": [
    "A01K 91/08"
  ],
  "assignees": [
    "WEBER CLAUDE J"
  ],
  "inventors": [
    "WEBER CLAUDE J"
  ],
  "filing_date": "1975-08-07",
  "publication_date": "1976-06-01",
  "grant_date": "1976-06-01",
  "priority_date": "1975-08-07",
  "application_number": "US-60256875-A",
  "family_id": "24411876",
  "citations": [
    "GB539611A",
    "US2157288A",
    "US2316290A",
    "US2482625A",
    "US3131449A",
    "US582564A"
  ]
}