Gray-Tarbit Rotary Drilling-machine.
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Description
Image from page 203 of "Transactions" (1852)
Identifier: transactions53nort Title: https://www.flickr.com/photos/internetarchivebookimages/tags/bookidtransactions53nort">Transactions Year: https://www.flickr.com/photos/internetarchivebookimages/tags/bookyear1852">1852 (https://www.flickr.com/photos/internetarchivebookimages/tags/bookdecade1850">1850s) Authors: https://www.flickr.com/photos/internetarchivebookimages/tags/bookauthorNorth_of_England_Institute_of_Mining_and_Mechanical_Engineers__Newcastle_upon_Tyne">North of England Institute of Mining and Mechanical Engineers, Newcastle-upon-Tyne https://www.flickr.com/photos/internetarchivebookimages/tags/bookauthorNorth_of_England_Institute_of_Mining_and_Mechanical_Engineers__Newcastle_upon_Tyne__Report_of_the_Committee_upon_mechanical_coalcutting__1905">North of England Institute of Mining and Mechanical Engineers, Newcastle-upon-Tyne. Report of the Committee upon mechanical coalcutting, 1905 Subjects: https://www.flickr.com/photos/internetarchivebookimages/tags/booksubjectMineral_industries">Mineral industries https://www.flickr.com/photos/internetarchivebookimages/tags/booksubjectMechanical_engineering">Mechanical engineering Publisher: https://www.flickr.com/photos/internetarchivebookimages/tags/bookpublisherNewcastle_upon_Tyne">Newcastle-upon-Tyne Contributing Library: https://www.flickr.com/photos/internetarchivebookimages/tags/bookcontributorGerstein___University_of_Toronto">Gerstein - University of Toronto Digitizing Sponsor: https://www.flickr.com/photos/internetarchivebookimages/tags/booksponsorUniversity_of_Toronto">University of Toronto View Book Page: https://archive.org/stream/transactions53nort/transactions53nort#page/n203/mode/1up" rel="noreferrer nofollow">Book Viewer About This Book: https://archive.org/details/transactions53nort" rel="noreferrer nofollow">Catalog Entry View All Images: https://www.flickr.com/photos/internetarchivebookimages/tags/bookidtransactions53nort">All Images From Book Click here to https://archive.org/stream/transactions53nort/transactions53nort#page/n203/mode/1up" rel="noreferrer nofollow">view book online to see this illustration in context in a browseable online version of this book. Text Appearing Before Image: Fig. 9.—Pendulum Drilling-machine. Since 1880, mining by power-machines has made great pro-gress and at the present time about one-third of the Clevelandironstone is won by such machinery. Until 1888, very little use had been made of the hand-machinedrills. The late Mr. George Lee had tried some at the Livertonmines, and the late Mr. T. Allison, of Guisborough, had intro-duced a few ratchet-machines into the Belmont and Spawoodmines of the Weardale Iron & Coal Company, Limited. 176 RATCHET AXD HAND-MACHINE DRILLS. In 1884, owing to depression in the iron-trade, the Slapewathmines of Sir B. Samuelson & Co. were closed. It being absolutelynecessary that steps should be taken to reduce the cost of winningthe ironstone, on restarting the mines in 1886, a thoroughand exhaustive trial of the ratchet-machine was instituted. Thefirst machines were of crude construction, being fitted with loose Text Appearing After Image: Fig. 10.—Gray-Tarbit Rotary Drilling-machine. brasses in the barrel and thick-edged drills ; and, when drillingthe hole, the machine was set against a prop fixed between theroof and the floor. It was soon found that a great drawback to the use of themachine was the time spent in setting these props or stands,a considerable portion of the time saved in drilling the hole beingspent in the preliminary setting of the props and in changingthe drills. In many instances, the stone thrown down by the RATCHET AXD HAND-MACHINE DRILLS. 1<7 previous shot would be lying where the prop should stand ; andin other instances, owing to projections of the side of the working-place, the prop could not be set near enough to the side to obtainthe right direction of the hole. It became necessary, therefore.to supplement the prop with a cross-bar of iron between it andthe side of the place, the end of the machine resting against thisbar. Old permanent-way fish-plates were found to be suitablefor this pu 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@N07/14763558844/
Resource type: Image
Added by: Simon Cotterill
Last modified: 3 years, 11 months ago
Viewed: 334 times
Picture Taken: 1852-01-01T00:00:00 -
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