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municatipn of a rope with an alTemblage of blocks, and 

 known in meclianics by the name of pulUy. 



Tackles arc ufed in a rtiip to raife, remove, or fecure 

 weighty bodies, to fupport the malls, or to extend the fails 

 and rigging. ' They are either moveable, as communicating 

 with a runner ; or fixed, as being hooked in an immoveable 

 fituation ; and they are more or lei's complicated, with blocks 

 and Iheaves, in proportion to the efforts which they are in- 

 tended to produce. That part of the tackle which is fixed 

 to one of the blocks, &c. is called the Jland'mg part ; all 

 the rell are called running parts ; and that on which the men 

 pull, when employing the tackle, is called the fall. The 

 application of the tackle to mechanical purpofes is termed 

 hotJUng or boivfmg. Falconer. 



The power of a tackle will be, the friftion not confidered, 

 as the number of parts of the fall that are applied to fuftain 

 the weight. If a tackle confiils of a double and a Tingle 

 block, and the weight to be hoifted is hung to the double 

 block, there will be four parts of the fall ; and the weight 

 refting upon four ropes, equally llretched, each muft bear 

 the fame part of the weight. Thus, fuppofe the weight 

 hung to the double block be four hundred, then one hun- 

 dred applied to the fall or hauling part will fufpend it ; 

 and if as much more power be applied as will overcome the 

 fridion, it will purchafe the weight : but had the weight 

 been hooked to the fingle block, it would have relied on 

 three ropes only, each of which would bear a third part of 

 the weight ; therefore, a third part of the weight being ap- 

 plied to the hoifting part of the fall, would fufpend the 

 weight, when hooked to the fingle block ; as much more 

 being applied as will overcome the friction, would purchafe 

 the weight. 



The blocks that are fixed are only for the convenience of 

 turning the direftion of the fall ; they add nothing to the 

 power of the purchafe, but, on the contrary, deilroy fo 

 much as is neceflary to overcome their friftion, and are, 

 therefore, to be avoided as much as poffible. 



Ropes, if tight laid, will not eafily bend round fmall 

 fheaves, but will take up a confiderable part of the power to 

 force them into their proper direftion : hence it follows, that 

 blocks with fmall pins, large (heaves, and flack-laid ropes, 

 are the beft materials to obviate friftion, and make tackles 

 with more eafe. 



The anchor-Jlock tackle is compofed of a double block and 

 a fingle block, llrapped, with a hook and thimble. Boom 

 tackles are compofed of double and fingle blocks, llrapped, 

 with tails, and are ufed in getting the iludding-fail-booms 

 in or out. Bowline tackle is compofed of a long tackle, 

 and a fingle block, llrapped, with a hook and thimble : it 

 is ufed to bowfe up the main-bowline, when the fhip is 

 upon a wind. Burton tackles are compofed of double and 

 fingle blocks, and are ufed with pendants, to fet up the 

 ftirowds, fupport the topfail-yards, &c. (See Burton.) 

 A Jijh tackle is compofed of a long tackle, and a fingle 

 block, llrapped, with eyes, and is ufed with a pendant, to 

 fi(h the anchor, and get it into its place. Garnet tackle is 

 compofed of a double block and a fingle block, llrapped, 

 with a hook and thimble : it is hooked to the fciatic-ftay 

 in merchant-fiiips, and is ufed to hoift goods, &c. in or out. 

 (See Garnet.) Jigger tackles are compofed of double 

 and fingle blocks, llrapped, wnth tails, and are ufed for 

 topping the main and fore -yards by the lifts, &c. (See 

 Jigger.) Z-i/^ tackles are compofed of double and fingle 

 blocks, llrapped, with a hook and thimble, and are uled 

 occafionally at any part of the fhip. Outhauhr tackle is 

 compofed of two fingle blocks, llrapped, with tails, and is 

 ufed to bowfe out the jib-boom. Port tackles are com- 



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pofed of a fingle block, attached to a fpan made faft to the 

 outfide of the port-lid, and a runner with two fingle blocks, 

 all of which are made fall to the fide of the beam neareft 

 the port, and are ufed to hoifl and lower the port-hds. 

 Quarter tackles are compofed of double and fingle blocks, 

 llrapped, with eyes, and lafhed to the outer quarter of the 

 yai'd and the lower block, with a hook and thimble ; they 

 are ufed to hoifl up water and provifions. Reef tackles are 

 compofed of two double or two fingle blocks : one block is 

 fpliced into a pendant, and the other is ftrapped, with an 

 eye ; they are ufed to draw the extremities of the reefs clofe 

 up to tlie yard-arms for reefing the fail. (See Reef.) 

 Relieving tackles are luff tackles, ufed at the fore end of 

 the tillar, when the tillar -ropes are damaged. (See Re- 

 lieving Tackle.) Ridge tackle is compofed of a double 

 block, and a fingle block, llrapped, with an eye, and is 

 ufed to fufpend the awning in the middle. Rolling tackles 

 are luff tackles, ufed to the topfail-yards, to fupport them 

 under a prefs of fail, and preferve the parrals. Rudder 

 tackles are compofed of a long tackle block and a fmgle 

 block, llrapped, with hooks and thimbles : they are ufed 

 to fave the rudder, if unfhipped by accident, or to fleer by, 

 if the tillar is broken. Runner tackles are compofed of 

 double and fingle blocks, and a pendant ; the lower block 

 is llrapped, with a hook and thimble : they are ufed to fet 

 up the fhrouds, ard to get the mafl-heads forward, for 

 flaying the mafls. Stay tackles, main and fore, are com- 

 pofed of double and fingle blocks, flrapped, with hooks and 

 thimbles, except the block fpliced into the pendant : they 

 are ufed for getting the provifions, &c. out of the fore and 

 main hold, and for getting the boats in or out. The pen- 

 dant formerly travelled on the Hay, by iron thimbles ; but 

 this has been difcontinued in the navy, as they much injured 

 the flay by the friftion. Stayfailflay tackles are compofed 

 of double and fingle blocks ; the lower blocks are flrapped, 

 with a hook and thimble : they are ufed to fet up the jib, 

 and other flayfail-ftays. Shifting back-Jlay tackles are com- 

 pofed of double and fingle blocks, flrapped, with a hook 

 and thimble, and are ufed to fet up the fiiifting back-flays, 

 where wanted. Topmajl-flay and preventer-flay tackles are 

 compofed of long tackle blocks and fingle blocks ; the 

 lower blocks are llrapped, with a hook and thimble : they 

 are ufed to fet the topmall and preventer flays. Fore-top- 

 gallant-flay tackle is compofed of a double and fingle block, 

 and is ufed to fet up the fore-topgallant-ftay. Tack tackle 

 is compofed of a double and fingle block, flrapped, with 

 hooks and tltimbles, and is ufed for bowfing down the tack 

 of fore and aft main-fails. The top tackle is compofed of 

 double or treble blocks : it is attached to the top-rope- 

 pendant, and is ufed to ereft the topmafls, at the heads of 

 the lower mafls. Trufs tackles are compofed of two double 

 blocks, flrapped, with hooks and thimbles, and are ufed to 

 fecure the lower yai-ds to their mafls, being hooked to the 

 trufs-pendant. Winding tackle is compofed of a fourfold 

 and a treble block, or a treble and a double block, flrapped, 

 with eyes : it is attached to the winding-tackle-pendant, and 

 is chiefly ufed to get in and out the guns. (See Plate II. 

 R'SS'"S-> fs- '7') Tard tackles are compofed of double 

 and fingle blocks ; the double blocks are fpHced into the 

 lower ends of the pendants /, and the fingle blocks are 

 flrapped, with hooks and thimbles : they are ufed to hoifl 

 the boats in or out. 



Tackle-Fa//, that end of the rope of a tackle which is 

 bowfed on, or the rope which compofes the tackle. 



Tackle, Gunner's, that which ferves to hale the ordnance 

 in or out. 



Tackle Pendants. See Pendant. 



Tackle, 



