A New or Improved Tourniquet for Compression of the Radial and Ulnar Arteries.

摘要

115,789. Bleriot, L. Feb. 28, 1917, [Convention date]. Turning-gear. - Compressed fluid, admitted through a conduit h, actuates the piston b and its tubular rod b1. The space behind the piston b is in communication with the atmosphere by apertures a10, b20. The movement of the piston is transmitted to the engine shaft by a pulley and cord and ratchet arrangement. Near the end of its outward stroke, the central portion of the piston b engages a projection c2 on a piston c carried by a concentric piston-rod c1, to which is attached a hollow rod e provided with a valve e1. The movement of the piston c causes the valve e1 to cut off the fluid pressure from the piston b, the pressure on which is simultaneously reduced to that of the atmosphere by the opening of a valve a200. The fluid pressure is then transmitted by the hollow rods e, c1 and holes c10 to the other side of the piston b, thus effecting the return stroke and the resetting of the ratchet device. The release of the valve e1 is effected bv cutting off the compressed fluid supply.