Each rib of an aircraft wing comprising upper and lower flanges connected by inclined bracing is connected to each spar at one place only. A metal wing is shown in which shaped channel members 26, 27 of the ribs are connected together by shear bracing 28, 29 certain of the members 28 being connected to gusset plates 33 secured to the centres of vertical struts 16 of the spars which have no other connections to the ribs. The metal covering of the wing is connected to the spars through wooden blocks 35, Fig. 5, secured to the flanges of the spars by wood screws passed through hollow rivets 37. Alternatively the blocks 35 may be secured to the spars by long hollow rivets 38, Fig. 6, which alternate with short rivets 37, strips of plywood 39 being inserted under the rivet heads. The spar is constructed as described in Specification 367,048, or it may have shear bracing comprising a lattice work of channel members crossing one another back to back.
(1932), "Month in the Patent Office: A Selection of the More Important Aircraft and Engine Specifications Published Recently", Aircraft Engineering and Aerospace Technology, Vol. 4 No. 9, pp. 244-244. https://doi.org/10.1108/eb029598
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