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The "King Victor" Patent Floor Spring Hinge interestingly uses two volute springs in its design and is one of Robert Adams larger floor springs.  Volute springs are conical in shape and are designed to compress in a shorter distance than perhaps a conventional coil spring would.
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AuthorAs there is so little information out there with regard to door closers, especially vintage and antique model floor springs, I thought I would start this blog. Archives
September 2019
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