GB608640A - Improvements in or relating to mechanical artificial hands - Google Patents

Abstract

608,640. Artificial hands. SIMPSON, J. H. Jan. 23, 1946, No. 2179. [Class 81(ii)] An artificial hand, for use in cases where at least a digit or part thereof remains, comprises a palm part shaped to fit the remaining part of the natural hand, artificial digit means articulated thereto and a connection between the artificial digit means and the remaining digit whereby movement of the latter actuates the former. The connection may be such that the full available movement of the remaining digit will impart a lesser movement to the artificial digits. As shown a cranked rod 13 mounted on a palm part 7 connects the remaining finger 4 with the artificial digits 1 and 5, the arrangement being such that the crank is near a dead centre position when the artificial digits 1-3 and 5 are closed. The artificial digits may be formed integrally with the hinged base piece 11. The artificial digits may be pivoted to the palm part by ball and socket joints and be directly coupled to the remaining digit. The artificial digits may be formed with an articulated outer joint or joints with a tie means so arranged with reference to the root joints that movement of the digits about their root joints will automatically cause movement of the outer part of the digit. The artificial portion may be enclosed in a glove &c., provided with straps, bands &c. for securing the artificial hand to the natural hand. The Provisional Specification describes also a crank means comprising a quadrant &c.