Image from page 198 of "Transactions of the Institution of Mining Engineers" (1898)
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Identifier: transactionsofin6162inst Title: https://www.flickr.com/photos/internetarchivebookimages/tags/bookidtransactionsofin6162inst">Transactions of the Institution of Mining Engineers Year: https://www.flickr.com/photos/internetarchivebookimages/tags/bookyear1898">1898 (https://www.flickr.com/photos/internetarchivebookimages/tags/bookdecade1890">1890s) Authors: https://www.flickr.com/photos/internetarchivebookimages/tags/bookauthorInstitution_of_Mining_Engineers__Great_Britain_">Institution of Mining Engineers (Great Britain) Subjects: https://www.flickr.com/photos/internetarchivebookimages/tags/booksubjectMineral_industries">Mineral industries Publisher: https://www.flickr.com/photos/internetarchivebookimages/tags/bookpublisherNewcastle_upon_Tyne___The_Institution">Newcastle-upon-Tyne : The Institution Contributing Library: https://www.flickr.com/photos/internetarchivebookimages/tags/bookcontributorUniversity_of_Illinois_Urbana_Champaign">University of Illinois Urbana-Champaign Digitizing Sponsor: https://www.flickr.com/photos/internetarchivebookimages/tags/booksponsorUniversity_of_Illinois_Urbana_Champaign">University of Illinois Urbana-Champaign View Book Page: https://archive.org/stream/transactionsofin6162inst/transactionsofin6162inst#page/n198/mode/1up" >Book Viewer About This Book: https://archive.org/details/transactionsofin6162inst" >Catalog Entry View All Images: https://www.flickr.com/photos/internetarchivebookimages/tags/bookidtransactionsofin6162inst">All Images From Book Click here to https://archive.org/stream/transactionsofin6162inst/transactionsofin6162inst#page/n198/mode/1up" >view book online to see this illustration in context in a browseable online version of this book. Text Appearing Before Image: rder to ensure thaifc a good earth contact is made between the 1920-1921 ] EAMSAY i SUBMERSIBLE ELECTRIC MOTORS. 177 two half casings, three flat copper strips hxed in equidistant positionsaround the plug half spring into suitable seatings on the other halfcasing. The joint between the two halves is made on a flat machinedsurface with a packing-washer, which is pulled tight by a stiflf locking-nut. Covers are provided for protecting the contacts when not in use.A stuffing-box is fitted at the neck of each half-coupling, which wservesthe double purpose of making the interior watertight and of relievingthe cable-connexions of mechanical stress. In cases where the cable armouring is used for earthimg purposes, amodification is necessary at the neck of the coupling, and such anarrangement will be described later in connexion with a large pumpingset for sinking work The insulating block is provided with a locating feather, whichis in a fixed position with reference to the exterior feather. Text Appearing After Image: Fig. 13.—Portable G-Inch Double-inlet Submersible Motor-pump inDip Workings. Fig. 13 is a drawing of a 6-inch double-inlet pump coupled to a 50-horsepower motor installed in a mine in Gloucestershire for use in dip workings. The set, as will be seen, is mounted on a trolley. Fig. 1-1gives the curves of the motor-pump taken on test. De-watering Shafts.—From the description given, it \vill be agreedthat the submersible mctor-pump is eminently suitable for pumpingout shafts and pits. The following additional advantages may bebriefly stated : — (1) The whole unit may be submerged, thus eliminating the necessityfor suction-pipe and foot-valve, with the attendant losses and troubleson the suction. (2) Great saving in time and labour, as delivery-pipes and feeding-cable can be fitted in one operation, providing for a lengthy run beforeit is necessary to shut down again for adding additional lengths. As an example of what may be accomplished, an operation carried outat an old mining sha Note About Images Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work. -
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Link: https://www.flickr.com/photos/126377022@N07/14577040700/
Resource type: Image
Added by: Simon Cotterill
Last modified: 7 years, 6 months ago
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Picture Taken: 1898-01-01T00:00:00 -
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