Shipbuilding in iron and steel / a practical treatise . . e lower part of the head is generally rundown some distance into the body of the mast, and firmly con-nected with the plating and stiffeners. In more recent masts thesquare section of the head has been given up, and the head forms Chap. XIV. Iron Masts. 265 a continuation of the mast below the hounds, its diameter beingslightly reduced by a gradual taper. In Fig. 208 sketches aregiven showing in plan and elevation the mainmast head of asloop of war of 1100 tons. This mast is built on the plan illus-trated by Fig. 207, and the T-iron sti
Shipbuilding in iron and steel / a practical treatise . . e lower part of the head is generally rundown some distance into the body of the mast, and firmly con-nected with the plating and stiffeners. In more recent masts thesquare section of the head has been given up, and the head forms Chap. XIV. Iron Masts. 265 a continuation of the mast below the hounds, its diameter beingslightly reduced by a gradual taper. In Fig. 208 sketches aregiven showing in plan and elevation the mainmast head of asloop of war of 1100 tons. This mast is built on the plan illus-trated by Fig. 207, and the T-iron stiffeners extend throughout itslength. The sketches show the mode of fitting wood trestle-treesto an iron mast with this form of head. As there are no shouldersat the hounds, special provision has to be made for supporting thetrestle-trees, and this is accomplished by working a plate and aring of angle-iron around the mast, and fitting plate-knees h, h,which correspond with the cheeks usually worked below the trestle-Pi^y,!^ trees of a wood mast. The plan. shows very clearly the spreadof the knees and the arrange-ment of the plate and angle-iron below the trestle-trees.
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Keywords: ., bookcentury1800, bookdecade1860, bookpublisherlondo, bookyear1869
