Patent GB-130997-A (GB)
IPC: B64C39/00
Abstract: 130,997. Hall, C. W. Oct. 27, 1917, [Convention date]. Cars and cabins; framework; planes, construction and arrangement of.-The fuselage, wing spars and ribs, interplane struts, frames of control planes, &c. of aeroplanes are made from stamped metal blanks which are afterwards bent or upset to form lattice trusses in which the chords and the principal web members are of hollow or angle cross-section tapering along the whole length of both edges in accordance with the stresses. Fig. 4 shows a blank for forming half of the fuselage shown in Fig. 1, the various parts being bent along the dotted lines into angle crosssection. Cross-members 7 - - 10, 22, 23 and stays 11, 12 are bent inwards and united to similar members and stays extending from the other half-blank. Short stays 14, 15 are bent over and united to the opposite edges of the longerons to which they are attached. Members 16 serve as supports for the pilot's seat. A modification is described in which a fuselage of triangular cross-section is made from a single blank. Fig. 6 shows a blank for the rudder framework: the parts are bent along the dotted lines and the ribs 41 twisted through a right-angle and united to ears 45, 47. The elevators and tail-plane are similarly constructed. The wing-ribs are made from blanks shown in Fig. 8, which are bent along the dotted lines into Z-section, Fig. 11, strengthened by braces 76, 77. The flanges 71. 72. are formed with a corrugation 78 to receive rods 79, which are secured by wire clips or lacings 80 and serve for attaching the cloth covering of the wing; additional corrugations may be formed along the flanges. At the points where the interplane struts occur, special ribs are used formed from blanks which, when bent up, form members 100, 104, Fig. 16, in addition to the Z-section 91, 92, 93, the whole constituting a trough for receiving the strut 111. Fig. 14 shows a blank adapted to be bent up to form interplane struts 111, 116, Figs. 15 and 17, and these are attached to the ribs by bolts 133, 134. The main members of these struts may be corrugated. Z-section spars for threading through holes 74, 75, Fig. 8, in the ribs are bent up from blanks shaped as shown in Fig. 19. The flanges of the ribs and spars are riveted or welded together, and the ribs are tied together by joining half-braces 82, 83, Fig. 8. Straps 147, Fig. 19, on one end of the spars, are bent to form hinge-eyes for connexion to similar eyes 149, Fig. 1, on an upper central plane section, and eyes 148 secured in slots 20, Fig. 4, in the fuselage. Short struts I, Fig. 1, constructed similar to the interplane struts are introduced between the upper plane and the fuselage, and the wings are further stayed by struts 161 connected at G to the lower wings and secured in holes in brackets 162. The nose-strips for the wings are formed of sheet metal 151, Fig. 21, folded to form ribs 152 which are cut away at 153 to receive the wing-ribs. These strips may be bent along the outer edges of the wings, and metal tail-strips may be provided at the rear edges. Propelling.-Braces 17, Fig. 4, are bent inwards and upwards and united to similar braces on the other half-blank of the fuselage, the two cross-members thus formed being connected together by longitudinal angle-irons 31, Fig. 1, to form an engine-bed. Steering.-Holes 43, Fig. 6, in the rudder blank 43 receive the rudder-post 52, Fig. 1, which is mounted in eyes formed by bending straps 19, Fig. 4, on the fuselage blanks. The elevator axis is mounted in holes 21.