Scientific American Volume 06 Number 20 (May 1862) . hines say the arborupon which is the saw, 8, pulley, T, and balancewheel, E, is of cast steel, finished in the best manner,and supported in babbetted boxes of long bearing, firm-ly bolted to the frame. The pulley, if desired, can beplaced outside of the flywheel. The saw is supportedand stiffened by a collar on the outside not guard, O, with an arrangement below, notshown,for separating the shingles and saw dust, renders itperfectly safe to the operator. The saws are made to order, and ground down toHo. 16 gage, thus consuming but
Scientific American Volume 06 Number 20 (May 1862) . hines say the arborupon which is the saw, 8, pulley, T, and balancewheel, E, is of cast steel, finished in the best manner,and supported in babbetted boxes of long bearing, firm-ly bolted to the frame. The pulley, if desired, can beplaced outside of the flywheel. The saw is supportedand stiffened by a collar on the outside not guard, O, with an arrangement below, notshown,for separating the shingles and saw dust, renders itperfectly safe to the operator. The saws are made to order, and ground down toHo. 16 gage, thus consuming but little power and be obtained by addressing the manufacturers of themachines, Trevor & Co., at Lockport, N. T., to whomthe patent has been assigned. [See advertisement onanother page.] 8ZTBXABIBE OTOS. As the part of a war vessel most dangerous to bestruck is under the water line, several plans havebeen proposed for guns to lire under the water intothe hull of an enemys vessel when ranged alongsideThe accompanying engraving represents a gun pro-. proposes to bring the guns into sufficient proximityto an enemys ship and fire it below the water level;the projectile will therefore pass through the water,strike and enter the enemys ship below the waterline and so contribute to its destruction. Guns sosituated may be worked by the men in the ordinaryway, they being in the pressure chamber. Guns worked and discharged in compressed airchambers, according to this invention, would Inmostoases, be fired point blank, and would not in any caserequire to be elevated, but in very close quarters withan enemy they might be depressed with practice, however, the gun might always be main-tained at a uniform level, in which case the portor hole in the ships side may be made of a size tocorrespond somewhat in diameter to the muzzle ofthe gun. The gun having been loaded and broughtinto position, the supply of compressed air is admit-ted to the gun chamber, the port is opened by thelever
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