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US 4,465,011 AGranted
Halyard stopper
AssigneeSchaefer Marine, Inc.
InventorCarl A. Merry
Life of this patent
Estimating the term…
Abstract
A halyard stopper for a sailboat includes a pair of spaced-apart side plates extending up from a base. A jamming arm in the form of a class two lever is pivotally mounted between the plates above the base adjacent the entrance end of the stopper so that the arm can be swung from a jamming position wherein its free end is disposed close to the base and a nonjamming position wherein its free end is spaced further away from the base. A class one lever pivotally mounted between the side plates adjacent the exit end of the stopper is swingable so as to engage the free end of the arm and move the arm from its jamming to its nonjamming position even though the arm is under a very large jamming load.
Claims13
A line stopper having an entrance end and an exit end, said stopper comprising
- A. a base;
- B. a pair of spaced-apart side members extending generally perpendicular to the base;
- C. line jamming means in the form of a class two lever pivoted at its fulcrum between the side members above the base near the entrance end of the stopper;
- D. a lever movably mounted to said side members above the base near the exit end of said stopper for applying a force directed away from the base to a part of said line jamming means, said lever
- 1. being pivoted at its fulcrum between the side members above the base near the exit end of the stopper;
- 2. having its short leg extending from its said fulcrum to said line jamming means part;
- and
- 3. having its long leg extending from its said fulcrum to an accessible location adjacent an edge of the stopper;
- E. line gripping teeth or serrations formed on a surface of said line jamming means opposite the base and between said fulcrum and said line jamming means part;
- and
- F. means on said line jamming means and said lever short leg for releasably maintaining said line jamming means surface spaced appreciably from the base.
8 more elements
A line stopper having an entrance end and an exit end, said stopper comprising
- A. a base;
- B. a pair of spaced-apart side members extending generally perpendicular to the base;
- C. a jamming arm positioned between the side members;
- D. pivot means connecting one end of said arm facing said stopper entrance end to said side members so that the arm is swingable between a jamming position wherein its opposite free end facing the exit end of said stopper is positioned close to the base and a nonjamming position wherein said free end is spaced further away from the base;
- E. line-gripping means formed on a surface opposite the base between said pivot means and the free end of the jamming arm;
- F. means urging the arm toward its jamming position;
- G. lever means positioned between the side members near the exit end of the stopper, said lever means having
- 1. a pivotal connection to the side members defining a fulcrum;
- 2. a relatively long leg extending from the fulcrum to an accessible location beyond the side members;
- and
- 3. a relatively short leg extending from the fulcrum to a location opposite a surface at the free end of said arm so that when the lever means is swung on its pivot in a selected direction to a releasing position, its short leg engages said arm end surface and swings the arm away from the base with a considerable releasing force;
- and
- H. means for maintaining the lever means in its releasing position, said maintaining means including a notch or depression adjacent the free end of the arm and a rounded surface at the end of said short lever means leg which engage and interfit when the lever means is in said releasing position and the arm is in said nonjamming position.
10 more elements
A line stopper having an entrance end and an exit end, said stopper comprising
- A. a base;
- B. a pair of spaced-apart side members extending generally perpendicular to the base;
- C. a jamming arm positioned between the side members;
- D. pivot means connecting one end of said arm facing said stopper entrance end to said side members so that the arm is swingable between a jamming position wherein its opposite free end facing the exit end of said stopper is positioned close to the base and a nonjamming position wherein said free end is spaced further away from the base;
- E. line-gripping means formed on a surface opposite the base between said pivot means and the free end of the jamming arm;
- F. means urging the arm toward its jamming position;
- G. lever means positioned between the side members near the exit end of the stopper, said lever means having
- 1. a pivotal connection to the side members defining a fulcrum;
- 2. a relatively long leg extending from the fulcrum to an accessible location beyond the side members;
- and
- 3. a relatively short leg extending from the fulcrum to a location opposite a surface at the free end of said arm so that when the lever means is swung on its pivot in a selected direction to a releasing position, its short leg engages said arm end surface and swings the arm away from the base with a considerable releasing force;
- and
- H. bearing means mounted to the arm at a location spaced along and away from said pivot means and engaging the interior wall of at least one side member for minimizing sliding friction between the arm free end portion and the side member when the arm is swung between its two positions.
10 more elements
A line stopper having an entrance end and an exit end, said stopper comprising
- A. a base;
- B. a pair of spaced-apart side members extending generally perpendicular to the base;
- C. a jamming arm positioned between the side members;
- D. pivot means connecting one end of said arm facing said stopper entrance end to said side members so that the arm is swingable between a jamming position wherein its opposite free end facing the exit end of said stopper is positioned close to the base and a nonjamming position wherein said free end is spaced further away from the base;
- E. line-gripping means formed on a surface opposite the base between said pivot means and the free end of the jamming arm;
- F. means urging the arm toward its jamming position;
- G. lever means positioned between the side members near the exit end of the stopper, said lever means having
- 1. a pivotal connection to the side members defining a fulcrum;
- 2. a relatively long leg extending from the fulcrum to an accessible location beyond the side members;
- and
- 3. a relatively short leg extending from the fulcrum to a location opposite a surface at the free end of said arm so that, when the lever means is swung on its pivot in a selected direction to a releasing position, its short leg engages said arm end surface and swings the arm away from the base with a considerable releasing force;
- and
- H. wear means at the free end of said short leg for engaging said end arm surface when the lever means is moved between its two positions, said wear means including
- 1. a recess in the free end of the short leg;
- and
- 2. a plastic member retained in said recess and protruding toward said arm end surface.
13 more elements
Dependencies are inferred from the claim text.