As American ingenuity turned toward solving an old bedding design, rope tightening mechanisms came forward. Many people suggest the term, "sleep tight" came from this period. However, since we known that even ancient Babylonian beds were made in a similar way, "sleep tight" might be a really ancient concept.
Here is a sofa bedstead that uses ropes for support:
The original use of metal springs as cushioning and the like for furniture has an unkown date. It probably took place in the common blacksmith shop where carriage makers and cabinet makers both got custom supplies. Buggies and carriages uses leaf springs for suspension. These were made by the local foundry. It is probably at this point that springs were added to chairs or beds.
White's patentof 1855 is a little more complicated way to tighten the rope bed support.
But if the rope snaps in any place, this bed will be a total loss.
This design bends a piece of steel into an arc that forms a "spring".
Here we clearly see how the use of the word mattress on the patent refesr to the under support. It is clear that a tick encased cotton filled mattress. Therefore, the springs are in the "bed bottom" as the patent drawing demonstrates.
A flurry of new bed spring ideas began after the Civil War ended.
This patent illustrates the use of helical springs at the top. This is a precursor to the Woven Wire Mattress.
This bed was constructed using rope fibers or reeds that were strecthed around a wood or cane pole frame. But the problem of the ropes become loose must have happened in 3000 B.C as much as 1839. Maybe the Babylonians did not say "sleep tight", though they may have wished it.