Popular science monthly . /^ in. at theother end. The jib-boom is 7 ft. long,ij^ in. in the center and tapered to 1J-4 each end. The end of the galT is squared 944 Popular Science Monthly and a pair of oak jaws bolted or screwed toit, to keep this spar close to the jaws may be purchased with theother fittings, or sawed out of ij^-in. making the sails, heavy unbleachedcotton duck 8 oz. in weight is the mostsatisfactory. The breadths of cloth arefirst sewed together by lapping one edgeover the other for about ^4 in. with eachedge stitched close. The narrow-lapped orbight
Popular science monthly . /^ in. at theother end. The jib-boom is 7 ft. long,ij^ in. in the center and tapered to 1J-4 each end. The end of the galT is squared 944 Popular Science Monthly and a pair of oak jaws bolted or screwed toit, to keep this spar close to the jaws may be purchased with theother fittings, or sawed out of ij^-in. making the sails, heavy unbleachedcotton duck 8 oz. in weight is the mostsatisfactory. The breadths of cloth arefirst sewed together by lapping one edgeover the other for about ^4 in. with eachedge stitched close. The narrow-lapped orbighted effect may be gained by foldingover a hem and double-stitching the same. The small fittings required to connect theparts of the ice-yacht described way as the regular seam. The laps must,of course, run parallel with the leach orafter side of the sail, as shown in the sailplan. To make the sail strong and ser-\iceable, it is the usual practice of sail-makers to sew 14^-in. rope (tarred bolt-ropeis the best) all around the sail. For handsewing on canvas, a diamond-pointed sailneedle and a sailors palm will be requiredto force the needle through the rope andcloth. The stitch used is simple overcast-ing. The seams of the sail itself may bestitched on the sewing-machine, but thehand-sewn sail is the strongest. At eachcorner of the sail, sew on a semicircularpath to reinforce the sail at these points. The sail is attached to the mast-hoopsand gaff and boom through grommets. Aneasy way to make these grommet-holes isto procure about 3 doz., ^i-in. gaUanizediron grommet-rings. Punch a small holein the sail where the grommet-hole iswanted, [ilace a ring on each side
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectscience, bookyear1872
