File:Transactions and proceedings of the New Zealand Institute (1873) (14564655088).jpg

Identifier: transactionsproc61873newz (find matches)
Title: Transactions and proceedings of the New Zealand Institute
Year: 1868 (1860s)
Authors: New Zealand Institute (Wellington, N.Z
Subjects: Science Birds
Publisher: Wellington : J. Hughes, Printer
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Biodiversity Heritage Library

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
end and dropping into a socket. On the longitudinal beams are placedthe bilge beams, or slide beams, formed of a suitable shape to take the bilge ofa vessel, being of a depth of 1 ft. over the centre beam and 2 ft. over the outerbeam; they are secured to the outer beams by means of iron brackets andcotters, and to the centre beam by means of an iron catch fitting into one sideof the slide beam, in the shape of a mortise and tenon in wood work. A spaceof 8 in. or 10 in. is left between the beams, which is filled with wedges fixiuo-the slide beams firmly in the catches. The slide beams are 15 ft. apart fromthe centre, there being twelve slide beams on each side of the carriage. Atthe end of four slide beams on each side there are sockets in which standardsare placed for keeping the ends of the ropes used for working the sliding blocksand palls above water. The sliding blocks work on the top of the slide beams,and on to these blocks pieces of wood are secured with dogs to suit the bilges
Text Appearing After Image:
George.—Description of Patent Slip at Wellington. 17 of the vessel to be raised. Small blocks or pulleys aie fixed in positions toguide the ropes in the proper directions, both for the sliding blocks andthe palls. The steam engines for working the slip consist of two 25 horse-power horizontal high-pressure engines, manufactured by Messrs ApplebyBrothers, of London. Steam is supplied to the engines by two single-fluedcircular boilers, 30 ft. in length and 5 ft. in diameter. They are erected in abuilding about 50 ft. distant from the engine house. The reason for placingthem so far distant was to avoid the expense of a heavy cutting that wouldhave been required to place them close to the engines. It is not found thatany loss is sustained beyond the expenditure of steam necessary to warm thesteam-pipe in the first instance, the steam-pipe being, of course, covered in withhair-felt. The boilers are supplied with water by means of a GiSards patentinjector, but can also be supplied by the

Note About Images