The Illustrated London News (3-November 1850): 428. Source: An Internet Archive online version of a copy in the University of Michigan Library. Click on image to enlarge it..
Text from The Illustrated London News
VVe are not acquainted with any building in which so many substitutes for manual labour have been successfully adopted in its construction, as in that the details of which we are now describing. The Bash-bar painting apparatus, a View of which we have introduced, together with a section of the brushes, is among the number. One of the sash-bars is occasionally passed between tne brushes, te keep them clean. After being primed, it is placed in a wooden tank, containing paint of the consistence suitable for the first coat, and subsequently taken out and passed through the brushes, to remove the superfluous paint, which runs off into a wooden shute placed in an inclined position. Any of our readers who have watched the tedious process of hand-painting sash-bars, will be able to estimate the advantage of this simple yet effectual contrivance. It may be as well here to mention, that Mr. Owen Jones, the architect, is already making experiments with regard to the most appropriate colours for the rnlnmna and other internal decorations. 
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Last modified 21 August 2017