Steel yard balance swing Timothy Sheldrake
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Steel yard balance swing
Front view of a medical instrument intended to correct deformities or irregularities in human bones and muscles. The device used gravity by suspending a patient (most likely a child) from the balance arms. The drawing includes details of weights and suspension tethers. Figure from the paper "The description and uses of the steel-yard balance swing", by Timothy Sheldrake, Philosophical Transactions of the Royal Society, vol. 42 1742-1743, pp.20-25.With pencil annotations instructing the engraver. The botanist Timothy Shedrake's eldest son, also Timothy Sheldrake (1729-1800) made his living as a truss-maker but would be too young to have authored this paper.
Original: ink on paper. 1742
- Image reference: RS-10396
- The Royal Society
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