Adjustable tensioning device

A device for drawing together two members the device comprising:

• anti-separation means, the anti-separation means including a plurality of guide means;
• a first threaded member attached to the anti-separation means;
• as second threaded member attached to the anti-separation means, the first and second threaded members separated by the anti-separation means;
• first adjusting means threadable and rotatably engaged with the first threaded member for translation thereon the first adjusting means having first restricting means;
• second adjusting means threadably and rotatably engaged with the second threaded member for translation thereon, the second adjusting means having second restricting means;
• a first member slidably engaged with the first threaded member and located between the first adjusting means and first restricting means whereby translation of the first adjusting means on the first threaded member causes corresponding translation of the first member;
• a second member slidably engaged with the second threaded member and located between the second adjusting means and second restricting means, whereby translation of the second adjusting means on the second threaded member causes corresponding translation of the second member;
• a plurality of guided members movably engaged with the guide means, a first number of guided members attached to the first member, a second number of guided members attached to the second member;
• a first end member having first means for attaching a first member to be tensioned attached to the first number of guided members, the anti-separation means intermediate the first end member and the first adjusting means;
• a second end member having second means for attaching a second member to be tensioned attached to the second number of guided members, the anti-separation means intermediate the second end member and the second adjusting means, whereby translation of the first adjusting means results in corresponding translation of the first end member and attached member to be tensioned and translation of the second adjusting means results in corresponding translation of the second end member and attached member to be tensioned thereby varying tension on the attachments to the first and second end members and failure of the threads on either the first or second threaded members does not result in separation of the device since the anti-separation means lies between the first member and first end member as well as the second member and second end member.

A device for drawing together two members, the device comprising:

• anti-separation means;
• a first member moveably engaged with the anti-separation means;
• a second member moveably engaged with the anti-separation means;
• the anti-separation means intermediate the first and second member;
• first moveable means adjustably engaged with the first member;
• second moveable means adjustably engaged with the second member;
• a third member associated with the first moveable means whereby movement of the first moveable means on the first member causes corresponding movement of the third member;
• a fourth member associated with the second moveable means whereby movement of the second moveable means on the second member causes corresponding movement on the fourth member;
• a first attachment means for connecting a first member to be tensioned to the third member with the anti-separation means intermediate the first attachment means and the first moveable means;
• a second attachment means for connecting a second member to be tensioned to the forth member with the anti-separation means intermediate the second attachment means and the second moveable means, whereby movement of the first moveable means results in corresponding movement of the first attachment means and first attached member to be tensioned and movement of the second moveable means results in corresponding movement of the second attachment means and second attached member to be tensioned thereby varying tension on the attachments to the first and second attachment means and the anti-separation means intermediate the first moveable means and first attachment means as well as the second moveable means and the second attachment means and the anti-separation means intermediate the first moveable means and first attachment means as well as the second moveable means and the second attachment means precluding separation of the device if either the first or second moveable means fails;
• and
• yieldable compensating means, the yieldable means in contact with the first member at a first end and in contact with the second member at the second end, yieldable means intermediate the first and second members, whereby the yieldable means yields to the tension forces acting upon the device thereby protecting the device in a plurality of otherwise failure including overtensioned conditions.

A device for drawing together two members, the device comprising:

• anti-separation means, the anti-separation means including a plurality of guide means;
• a first threaded member moveably engaged with the anti-separation means;
• a second threaded member moveably engaged with the anti-separation means, the first and second threaded members separated by the anti-separation means;
• first adjusting means threadable and rotatably engaged with the first threaded member for translation thereon first adjusting means having first restricting means;
• second adjusting means threadably and rotatably engaged with the second threaded member for translation thereon second adjusting means having second restricting means;
• a first member slidably engaged with the first threaded member and located between the first adjusting means and first restricting means whereby translation of the first adjusting means on the first threaded member causes corresponding translation of the first member;
• a second member slidably engaged with the second threaded member and located between the second adjusting means and second restricting means, whereby translation of the second adjusting means on the second threaded member causes corresponding translation of the second member;
• a plurality of guided members movably engaged with the guide means, a first number of guided members attached to the first member, a second number of guided members attached to the second member;
• a first end member having first means for attaching a first member to be tensioned to the first number of guided members, the anti-separation means intermediate the first end member and the first adjusting means;
• a second end member having second means for attaching a second member to be tensioned to the second number of guided members, the anti-separation means intermediate the second end member and the second adjusting means, whereby translation of the first adjusting means results in corresponding translation of the first end member and attached member to be tensioned and translation of the second adjusting means results in corresponding translation of the second end member and attached member to be tensioned thereby varying tension on the attachments to the first and second end members and failure of the threads on either the first or second threaded members does not result in separation of the device as the anti-separation means lies between the first member and first end member as well as the second member and second end member;
• and
• yieldable compensating means, the yieldable means in contact with the first threaded member at a first end and in contact with the second threaded member at a second end, yieldable means intermediate the first and second threaded members, whereby the yieldable means yields to the tension forces acting on the device thereby protecting the device in a plurality of otherwise failure inducing over tensioned conditions.

A tensioning device for adjusting the distance between adjacent ends of cables or the like comprising:

• a pair of elongated rigid elements extending in parallel directions and in adjacent relation to one another;
• means for securing a cable to one end of one of the said rigid elements and a second means for securing a second cable to the end of said other rigid element opposite of said one end of said first rigid element;
• means associated with said rigid elements for movement of said rigid elements in different directions in response to forces applied to said cables;
• means for limiting the movement of said rigid elements over a path of defined length unless the forces applied to said cables exceed a predetermined limit;
• and
• additional means for limiting the movement of said rigid elements to be less than or equal to the length of a second path of defined length including but greater than said first mentioned path when said forces exceed said predetermined limit.

A tensioning device for drawing together two members, said device comprising

• a first closed rectangular frame having a first and second end,
• a second closed rectangular frame, said second frame having a first and second end,
• means for attaching one of said members to said first end of said first frame,
• means for attaching the other of said members to said first end of said second frame, and
• means attached to said second end of said first frame and to said second end of said second frame for forcing said second end of said first frame away from the second end of said second frame
• said second end of said first frame being looped through said second end of said second frame so that said first and said second frames cannot physically separate upon a mechanical failure of said forcing means.