![]() |25 fare :of 'fkeyehole `shape with their large-ends! at theitop v and. 'To prevent r-:any such separation upon a reversalfofload we guide- flange 24 fand-which is 1 'provided vadjacent its otheror ffreeend with -a' projection '36 :positionedto'- enter oneoflthe'openings 25'whenithe "lugs 26' areseated in the position shown in' Fig.3. a postionsuch thatthe heads theelevated end frame mightV thus become: sep- "aratedifromTthe-associatedsiderails. move Y"downwardly" in its associated guide-2 |to bring the fopenings25into. onV the elevated end frame would tend tol causeit to. Under such circum- "stances,"` the f force of gravity acting. frame to raise the other `end frame from the floor. Under-certain con` Q15 ditions, however, as when an out-board load'of suflicient magnitude is appliedito'lonebf the end frames, the unit may tend to tilt about the bottom of such end. Thus, such loads tend to maintain the lug seated against the lower ends of the openings-'25,1inlwhiclrposition the heads 21 preventseparation*orthev en'd frames from the guides 2|. Preferably, the platform 3I fits closely between the I through the lower faces of the lugs 26 and 10 the lower ends of the openings 25. rests on the anges 30 of opposed side rails, being confined laterally by the vertical flanges 30' of such side rails 20 and longitudinally by the flanges 23 of the guide members 2 I. ![]() of rods in L- or H-shape, with or without bracingĮach of the side rails 2li is desirably I i-shap'ed in cross-section to provide an inwardly extending iiange 30 and an upwardly extending ange 30. E04G1/14- Comprising essentially pre-assembled two-dimensional frame-like elements, e.g.E04G1/00- Scaffolds primarily resting on the ground.E04G- SCAFFOLDING FORMS SHUTTERING BUILDING IMPLEMENTS OR AIDS, OR THEIR USE HANDLING BUILDING MATERIALS ON THE SITE REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS. ![]()
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