Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB21291/19A
Inventor
John William Rapp
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by IndividualfiledCriticalIndividual
Publication of GB121741ApublicationCriticalpatent/GB121741A/en
121,741. Rapp, J. W., (Assignee of Vanorio, J.). Dec. 19, 1917, [Convention date]. Framework. planes, construction of.- Ribs or spars of aerofoils are composed of upper and lower longitudinals 2, 2<a> each formed of metal plate bent into T-section as shown in Fig. 5, the two longitudinals being connected together by diagonal braces 9 having the ends bevelled as shown at 9<b> and spot-welded between the inwardly-extending flanges 7 of the longitudinals. The longitudinals are perforated as shown at 10. Fig. 1 shows a complete rib having the ends of the longitudinals connected to members 3, 3<a>.