In frame structures for vehicles and aircraft a sheet‐metal member having screwed bosses thereon is shaped to fit within or on one of the frame members to receive the fastening bolts or studs. A metal member 5 having sides 6, 6 is provided with bosses 8 into which bolts or studs 4 are screwed to secure the box girder 2 to girders or sockets 1. The member is slid within the girder 2 and is shaped to correspond. Each member may be provided with the requisite number of screwed bosses and it may have a curved or oval shape as shown in Fig. 5, the member 5 being split at 9 to provide a springy member while the bosses 8 may have projections 8 to spring into the bolt holes of the girder 2. Instead of bosses 8 nuts may be positioned in any suitable way in the members 5. Specification 280,084 is referred to.
(1930), "Month in the Patent Office: A Selection of the More Important Aircraft and Engine Specifications Published Recently", Aircraft Engineering and Aerospace Technology, Vol. 2 No. 12, pp. 318-318. https://doi.org/10.1108/eb029352
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