. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. the prong. Four prongs to each grap-nel, ^luch used in the repair of defective orbroken submarine cables. •>>. \ NAVIGATION, VESSELS, MARINE APPLIANCES, ETC. 20I 510. SUBMARINE CABLE GRAPNEL. Cutting and holdinggrapnel. The cable on being hooked and lifted force
. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. the prong. Four prongs to each grap-nel, ^luch used in the repair of defective orbroken submarine cables. •>>. \ NAVIGATION, VESSELS, MARINE APPLIANCES, ETC. 20I 510. SUBMARINE CABLE GRAPNEL. Cutting and holdinggrapnel. The cable on being hooked and lifted forces its way through the rubber shield, K, which is provided to keepthe mechanism clear from stones, sand, etc.,while towing over the bottom, and becomesinclosed in the jaws of the hinged clip. Asthe strain increases the hinged clip shearsthrough a leaden bolt, H, which supports it,and, moving upon its pivot, is forced down thetapering sides which press the sides of the cliptogether so as to grasp the cable very greater the strain on the grapnel rope, themore the clips are forced down and the tighterthe cable is held ; until at last the clips sink sofar as to cause the cable to make an acute angleover the knife edge, L, and the cable is cut, one end falHng to thebottom while the other is brought to the Lead Bolt 511. STEAM SOUNDING MACHINE. Sigsbee type. - Its prin-cipal parts are the drum, A, on which is wound the wire, the auxiliary pulley, B, used while heaving into relieve drum of the strain, thejockey wheel, C, the swivel pulley,D, the accumulator contained inthe tube, H, and the brake E. The drum is made light, inorder to have as little inertia andmomentum to overcome as pos-sible. Its circumference is onefathom. An indicator is attachedto the axle, which registers thenumber of revolutions. The auxil-iary pulley, B, is composed ofthree pulleys : one for the wire,one for the belt going to the drum,and the other for the belt from thedriving engine. The
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Keywords: ., bookauthorhiscoxgardnerdexter18, bookcentury1900, bookdecade1910
