An assembly (2, 202, 302, 902) for converting motion, the assembly comprising: a first arm (8, 208, 308, 908) rotatable at a first position thereon about a first fixed pivot (4, 204, 304, 904); a second arm (10, 210, 310, 910) rotatable at a first position thereon about a second fixed pivot (6, 206, 306, 906), the second fixed pivot (6, 206, 306, 906) spaced apart from the first fixed pivot (4, 204, 304, 904); a third arm (12, 212, 312, 912) pivotably connected at a first position thereon to the second arm (10, 210, 310, 910) at a second position on the second arm (10, 210, 310, 910), the second position spaced apart from the first position on the second arm (10, 210, 310, 910); a fourth arm (16, 216, 316, 916) pivotably connected at a first position thereon to a second position on the first arm (8, 208, 308, 908) spaced apart from the first position and pivotably connected at a second position thereon spaced apart from the first position thereon to the third arm (12, 212, 312, 912) at second position on the third arm (12, 212, 312, 912) spaced apart from the first position; a connecting arm (22, 222, 322, 922) extending between the first arm (8, 208, 308, 908) and the second arm (10, 210, 310, 910), the second connecting arm (22, 222, 322, 922) pivotably connected to a third position on the first arm (8, 208, 308, 908) disposed between the first and second positions thereon and pivotably connected to a third position on the second arm (10, 210, 310, 910); and a support arm (26, 226, 326, 926) pivotably connected at a first position thereon to a third position on the fourth arm (16, 216, 316, 916), the third position on the fourth arm (16, 216, 316, 916) being spaced from the first and second positions thereon and beyond the second position in the direction from the first position to the second position. a first arm (8, 208, 308, 908) rotatable at a first position thereon about a first fixed pivot (4, 204, 304, 904); a second arm (10, 210, 310, 910) rotatable at a first position thereon about a second fixed pivot (6, 206, 306, 906), the second fixed pivot (6, 206, 306, 906) spaced apart from the first fixed pivot (4, 204, 304, 904); a third arm (12, 212, 312, 912) pivotably connected at a first position thereon to the second arm (10, 210, 310, 910) at a second position on the second arm (10, 210, 310, 910), the second position spaced apart from the first position on the second arm (10, 210, 310, 910); a fourth arm (16, 216, 316, 916) pivotably connected at a first position thereon to a second position on the first arm (8, 208, 308, 908) spaced apart from the first position and pivotably connected at a second position thereon spaced apart from the first position thereon to the third arm (12, 212, 312, 912) at second position on the third arm (12, 212, 312, 912) spaced apart from the first position; a connecting arm (22, 222, 322, 922) extending between the first arm (8, 208, 308, 908) and the second arm (10, 210, 310, 910), the second connecting arm (22, 222, 322, 922) pivotably connected to a third position on the first arm (8, 208, 308, 908) disposed between the first and second positions thereon and pivotably connected to a third position on the second arm (10, 210, 310, 910); and a support arm (26, 226, 326, 926) pivotably connected at a first position thereon to a third position on the fourth arm (16, 216, 316, 916), the third position on the fourth arm (16, 216, 316, 916) being spaced from the first and second positions thereon and beyond the second position in the direction from the first position to the second position.