(57) A seat designed to give assistance to the user in rising from a seated position is
hinged to the seat frame at or adjacent to one edge of the seat and is urged to lift
pivotally about the hinge by at least one coil spring, adjustment means being provided
to vary the tension in the spring by tightening or slackening the coil. In a preferred
form, two such coil springs together carry a roller at one of their ends, which roller
is disposed to bear upon the underside of the seat, and together carry a rod or bar
at their other ends, which rod or bar may be moved to vary the tension in the coils.
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