Miner using a Jumper-drill.
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Description
Image from page 209 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/n209/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/n209/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. 15.—Livingstone Rotary Drilling-machine. and the hand rotary machine, and in some cases very remarkableresults have been obtained. Not wishing to exaggerate thevalue of the ratchet or hand rotary machines, the writer is keep-ing well within the mark in stating that two holes can be drilledwith these, to one with the jumper-drill; and that, underordinary conditions, the output per shift of the pair of men canwith ease be increased fully 20 per cent. In addition to this advantage, the diminished amount ofphysical labour, required in working these machines, enables mento continue mining, who would have been compelled to abandonit, if restricted to the jumper-drill; and it also allows youths, 182 HATCHET AND HAND-MACHINE DRILLS. under the direction of their fathers or other men, to engage inmining at a comparatively early age. Table I. shows the gradual increase in the use of ratchet andother hand-machine drills in the Cleveland mines, in percentageof the total output each year. Text Appearing After Image: Fig. 16.—Miner using a Jumper-drill. Table I.—Percentage of the Output of the Cleveland Mines, wroughtby Ratchet and other Hand-machine Drills. Year. Per Cent. Year. Per Cent. Year. Per Cent. Year. Per Cut 1886 . 0-50* 1890 ... 294 1894 . .. 10-23 1898 . .. 31-39 1887 .. 1-53 1891 ... 2-79 1895 . .. 12-82 1899 . .. 33-46 1888 .. 2-05 1892 ... 309 1896 . .. 21-86 1900 . .. 40 47 1889 .. 2-93 1893 ... 5-00t 1897 . .. 28-97 1901 . .. 39-55: * Commenced using ratchet-drills at the Slapewath mines. f Introduced at other mines. I Large temporary decrease at one mine, owing to depression in the iron-trade. DISCUSSION—RATCHET AND HAND-MACHINE DRILLS. 18*5 Mr. A. L. Steavenson (Durham) said that good work appearedto have been done by the drills described by Mr. Charlton, but inhis opinion there was nothing equal to an electrically-drivendrill, which only required one skilled man to look after it, whileunskilled men could do all the other work required in connectionwith taking down the or 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@N07/14579454607/
Resource type: Image
Added by: Simon Cotterill
Last modified: 4 years ago
Viewed: 568 times
Picture Taken: 1852-01-01T00:00:00 -
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