A sailing block is single or multiple pulleys with one or more sheaves that are enclosed in an assembly between cheeks or chocks. In use, a block is fixed to the end of a line, to a spar, or a surface. A rope line is reeved through the sheaves, and maybe through one or more matching blocks at the far end, to make up what's known as a tackle. The purchase of a tackle refers to its mechanical advantage. In general, the more sheaves in the blocks that make up a tackle, the higher its mechanical advantage. The matter is slightly complicated by the fact that every tackle has a working end where the final run of rope leaves the last sheave. More mechanical advantage can be obtained if this end is attached to the moving load rather than the fixed end of the tackle. Various types of blocks are used in sailing. Some blocks are used to increase mechanical advantage and others are used simply to change the direction of a line. A ratchet block turns freely when a line is pulled in one direction but does not turn the other direction, although the line may slip past the sheave. This kind of block makes a loaded line easier to hold by hand, and is sometimes used on smaller boats for lines like main and jib sheets that are frequently adjusted. A single, large, sail-powered warship in the mid-19th century required more than 1,400 blocks of various kinds and sizes. An item from an old sailing vessel from the late 19th to early 20th century, unfortunately, the item cannot be identified as to what vessel it belonged to. It does however give an insight into a piece of sailing equipment that's design is still in use today on pleasure sailing craft. Wooden closed spelter double rope block with two pully's between sheaves, block has metal frame around outside of the sheaves and 4 metal pins, 2 each side of the frame at top and 2 at bottom, joining the sheaves together. The shaft between the sheaves is also wooden. Remnants of orange and black paint on outside of block. Shafts are chipped, wood has borer holes. (NOTE: Block was rediscovered after relocating objects to new storage area)Noneflagstaff hill, warrnambool, flagstaff hill maritime museum, maritime museum, shipwreck coast, flagstaff hill maritime village, great ocean road, sailing ship, pulley, block, sheave, ship equipment, rope block, sail rigging

Black and white photo. Central Deborah Gold Mine, corner Violet and Creek Streets, Bendigo. 1939-1954. Shaft 1347 feet deep. Gold extracted 29,460 ounces. This mine was purchased by the Bendigo City Council to be retained as a Mining Museum. Markings/Inscriptions: Central Deborah Mine. Corner Violet and Creek Streets. 1939-1954. Shaft 1347 feet. Gold 29,460 ozs. This Mine has been purchased by the Bendigo City Council to be retained as a Mining Museum.organization, business, central deborah gold mine

A Chemold Rod Laver Sovereign tennis racquet, with ribbon whipping around shoulders, and leather grip featuring quatrefoil perforations. Chemold logo features across base of head. Model name features across throat and shaft, accompanied by a mounted fleur-de-lis device. Chemold trademark with large 'C' features on lower shaft and black butt cap. Materials: Wood, Nylon, Ink, Plastic, Leather, Rubber, Glue, Lacquer, Metal, Adhesive tape, Ribbontennis

A Chemold Rod Laver Sovereign tennis racquet, with ribbon whipping around shoulders, and leather grip featuring quatrefoil perforations. Chemold logo features across base of head. Model name features across throat and shaft, accompanied by a mounted fleur-de-lis device. Chemold trademark with large 'C' features on lower shaft and black butt cap. Materials: Wood, Nylon, Ink, Plastic, Leather, Rubber, Glue, Lacquer, Metal, Adhesive tape, Ribbontennis

A Chemold Roy Emerson Contender tennis racquet, with ribbon whipping around shoulders. Chemold logo features across base of head, flanked by the Roy Emerson signature trademark. Blue silhouette image of male playing tennis features on throat. Model name features along shaft. Chemold trademark with large 'C' features on lower shaft and black plastic butt cap. Materials: Wood, Nylon, Ribbon, Paint, Ink, Plastic, Glue, Lacquer, Metal, Adhesive tapetennis

An Oliver International tennis racquet, with ribbon whipping around shoulders and shaft, and leather handle grip with continuous patterned perforations. Oliver logo featurs across crown, along shaft, and across butt cap. Model name features across base of head. Illustrated decal of stylised kangaroo features on throat. Reproduced signatures of Anderson and Sedgman feature on the sides of throat. Materials: Wood, Gut, Leather, Ink, Glue, Lacquer, Metal, Ribbon, Fibreglass, Rubber, Enamel, Adhesive tapetennis

A Snauwaert Orion tennis racquet, with string whipping around shoulders and shaft, diagonal nylon stringing, and leather handle grip with floral perforations. Model name features across base of head, flanked by starburst devices. Diagonal grid design features on throat. Snauwaert logo features along shaft, with 'S' trademark in globe device below. 'S&D' trademark features on butt cover. Materials: Wood, Nylon, Leather, Ink, Glue, Lacquer, Metal, String, Enamel, Adhesive tapetennis

A Dunlop Lewis Hoad tennis racquet, with ribbon whipping around shoulders and shaft, and leather handle grip with floral perforations. Dunlop logo features across base of head. On obverse, a full-body action illustration decal of Hoad features on throat, and Lewis Hoad signature reproduction across shaft. Dynamic 'D' trademark features on black plastic butt cover. Materials: Wood, Nylon, Ink, Leather, Glue, Lacquer, Metal, Enamel, Adhesive tape, Plastic, Ribbontennis

A Spalding, "Pancho Gonzales" Impact-333 Model tennis racquet, featuring whipping around shoulders. Manufacturer's name along shaft and on butt cap; endorser name across base of head and rest of model name along lower shaft (both sides). 'S' symbol spray-painted across net. Perforated leather hand grip and white plastic butt cap. Materials: Wood, Metal, Lacquer, Glue, Ink, Nylon, Paint, Leather, Plastic, Stringtennis

A two-piece object, comprising of: an unstrung Lobster 'Lobster Graphite' tennis racquet, with a split shaft, strengthened by a narrow bridge across the middle (1); and, a vinyl cover (2). Lobster emblem comprising of a crayfish serving a tennis ball features at the base of the racquet shaft. Lobster emblem and logo feature on a sticker adhered to butt cap, and also across both faces of the cover. Materials: Graphite, Leather, Plastic, Paper, Ink, Adhesive tape, Metal, Vinyl, Ink, Metaltennis

A Wilson 'T2000' metal tennis racquet, with double shaft; white plastic shaft casing featuring 'W' logo and silver whipping. Handle wrapped with non-original maroon 'Profile'-branded grip tape and red grip seal tape. Net anchored to metal wire wrapped around head frame. White plastic butt cap with adhesive label featuring manufacturer's 'W' logo in black. Materials: Metal, Plastic, Adhesive tape, Nylon, Adhesive labeltennis

A Wright and Ditson 'Prize Cup' tennis racquet, with: string whipping around shoulders and shaft; cane-reinforced hexagonal shaft; and, W&D 'Autograph' brand leather grip over octagonal handle. Wright & Ditson Eagle trademark features on throat on obverse; Wright & Ditson player on ball, within shield trademark on throat on reverse. 'WD' trademark features on butt cover. Materials: Wood, Lacquer, Glue, Metal, Ink, Leather, String, Gut, Adhesive tape, Enamel, Canetennis

A Wright and Ditson 'Tournament' tennis racquet, probably manufactured for the Montgomery Ward retail chain, featuring: string whipping around shoulders and shaft, and leather handle grip with quatrefoil perforations. Model name features across base of head, with stylised tennis player serving ball emblem featuring on throat. Wright & Ditson cursive logo features along left side of shaft. Materials: Wood, Lacquer, Glue, Metal, Ink, Leather, String, Nylon, Adhesive tapetennis

A Spalding 'Natural' Specialist Frame tennis racquet, with wood grain finish on lower half of head and along edge of shaft and head; leather handle grip printed with manufacturer name; and, plastic butt cap featuring 'S' logo. Model name features along base of head. Manufacturer's 'S' logo appears on lower shaft. Inscription on side outlines the wood & fibre composition of racquet. Materials: Wood, Glue, Metal, Lacquer, Nylon, Leather, Ink, Plastic, Adhesive tape, Fibretennis

A Spalding 'Pancho Segura Autograph Model' wood tennis racquet. String whipping/ribbon reinforcements around shoulders and shaft. Model name & endorser signature printed along shaft. Manufacturer's name printed across base of head. Endorser's image printed on throat on obverse and reverse. Grip wrapped with perforated leather. White butt cloth printed with large Spalding 'S" logo. Materials: Wood, Metal, Lacquer, Glue, Ink, Nylon, Paint, Leather, Ribbon, Cloth, Threadtennis

A Spalding Pancho Gonzales-endorsed 'Prize Cup' wood tennis racquet. Striped tape reinforcements around shoulders and ribbon around shaft. Manufacturer's name & model name printed across throat on obverse and reverse. Grip wrapped with perforated leather. Large Spalding 'S" logo and 'JAPAN' printed onto butt cap. Decal on side of shaft reads: CUSTOM DESIGNED BY SPALDING/FOR CHAMPIONSHIP PLAY. Materials: Wood, Metal, Lacquer, Glue, Ink, Nylon, Paint, Leather, Ribbon, Plastictennis

A Spalding Pancho Gonzales-endorsed 'Prize Cup' wood tennis racquet. String whipping reinforcements around shoulders and around shaft. Endorser's signature, lion symbol & model name printed across throat on obverse and reverse. Manufacturer's name and logo printed along shaft on both sides of racquet. Grip wrapped with red plastic tape. Large Spalding 'S" logo printed onto butt cap. Materials: Wood, Metal, Lacquer, Glue, Ink, Nylon, Paint, Plastic, Stringtennis

A Spalding, "Pancho Gonzales" Tournament Model tennis racquet, featuring whipping around shoulders, leather handle grip with perforations, and a white embroidered butt cloth . Manufacturer's name across base of head; model name across throat and along shaft. Black and white photo, head and neck decal image of Gonzales features on throat. Wreathed 'S' trademark features on lower shaft and butt cloth. Materials: Wood, Metal, Lacquer, Glue, Ink, Nylon, Paint, Adhesive tape, Leathertennis

A Wilson Famous Player Series, Maureen Connolly Cup tennis racquet. Base of head features Wilson logo. Throat features decal head and shoulders image of Connolly. Shaft features decal image of a rendered cup trophy. Base of shaft and plastic butt cap feature 'W' trademark. Leather handle grip features clustered perforations. Materials: Wood, Nylon, Leather, Ink, Glue, Lacquer, Metal, Paint, Ribbon, Adhesive tape, Plastic, Stringtennis

A Wilson Famous Player Series, Tony Trabert Victory tennis racquet. Base of head on obverse features Wilson logo. Throat featuresmodel name beneath a crowned shield device, with a 'V' in the centre. Shaft features a decal head and shoulders photo image of a young Trabert. Leather handle grip features quatrefoil perforations. Inscription along right side of shaft: ENDORSED BY/THE NATIONAL CHAMPION. Materials: Wood, Nylon, Leather, Ribbon, Glue, Metal, Lacquer, Cloth, Painttennis

A Wilson "Butch" Buchholz Signature tennis racquet. Base of head features Wilson logo. Throat features model name, with a wreathed 'S'. Lower shaft and butt cap feature 'W' trademark. Leather handle grip features triangular perforations. Inscription along left side of shaft: MADE EXCLUSIVELY FOR [SEAR]S [ROEBUCK & CO]./BY WILSON SPORTING GOODS. Materials: Wood, Nylon, Leather, Glue, Metal, Lacquer, Paint, Adhesive tape, Ribbon, Plastictennis

A Wilson Stan Smith Monterey tennis racquet. Base of head features Wilson logo. Throat and shaft feature model name and gold and white shield device with 'S' at centre. Lower shaft and butt cap feature 'W' trademark. Leather handle grip features quatrefoil perforations. Butt cap has metallic plate adhered to it, engraved with the name 'JOE'. Materials: Wood, Nylon, Leather, Glue, Metal, Lacquer, Paint, Adhesive tape, Ribbon, Plastictennis

A Regent, Alex Olmedo Driver tennis racquet. Regent logo features across the base of the head and on the butt cover. Model name, with a decal head image of Olmedo, encircled by gold wreath, features on the throat. 'R' trademark features on the shaft. Endorsement and model details feature on the sides of the shaft. Leather handle grip features lozenge-patterned perforations. Materials: Wood, Nylon, String, Glue, Lacquer, Metal, Paint, Leather, Ribbon, Cloth, Ink, Adhesive tapetennis

A Regent, Alex Olmedo Captain II, Tournament Model tennis racquet. Regent logo features across the base of the head and on the butt cover. Model name features on the throat. Decal head image of Olmedo, encircled by gold wreath, features on the shaft. Endorsement and model details feature on the left side of the shaft. Leather handle grip features patterned perforations. Materials: Wood, Nylon, String, Glue, Lacquer, Metal, Ink, Paint, Leather, Ribbon, Cloth, Adhesive tapetennis

A Regent, Don Budge Top Star tennis racquet. Regent logo features across the base of the head and on plastic butt cap. Model name features on the throat, accompanied by a cloaked shield device. Decal head image of Budge features on lower shaft. Endorsement and model details feature on the left side of the shaft. Leather handle grip ifeatures linear perforations. Materials: Wood, Nylon, String, Glue, Lacquer, Metal, Paint, Leather, Ribbon, Ink, Plastictennis

A Bancroft Winner tennis racquet, with bamboo laminated frame, ribbon whipping around shoulders, and leather handle with triangle-patterned perforations. Bancroft logo features across base of head. Throat features model name, with wreath device. Wreathed 'B' trademark on lower shaft, and red 'B' trademark on butt cap. A furry lady bug sticker is adhered to shaft on obverse. Materials: Wood, Nylon, Leather, Glue, Lacquer, Metal, Ink, Plastic, Paint, Ribbon, Adhesive tape, Bambootennis

A Bancroft Bjorn Borg Autograph tennis racquet, with ribbon whipping around shoulders, and leather handle grip with patterned perforations. Bancroft logo features across base of head. Throat and shaft feature model name, including 'BJ' and 'BJORN BORG' logos. Lower shaft features Black 'B' trademark. Older red 'B' trademark on butt cap. Materials: Wood, Leather, Glue, Lacquer, Metal, Ink, Plastic, Paint, Adhesive tape, Ribbon, Nylontennis