Abstract
UNDER the heading, “Notes”, in NATURE, vol. xvii. p. 140, there is a paragraph describing the automatic brake of the Westinghouse Brake Company, St. Stephen's Palace Chambers, Westminster, the latter part of which refers to a ball which performs certain functions under different circumstances. In a previous account in the Times, three balls are mentioned as being used in the experiment; it also states that several gentlemen were investigating the mathematical principles under which these functions fell. I have not seen any results of their work, neither is there any comment upon it in NATURE. I therefore take occasion to mention it, in order that if any account of it has passed me, I may be informed of it, or that, if no results have appeared, this may lead to the subject being investigated by some of the mathematical correspondents of your esteemed paper.
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K., G. The Westinghouse Brake. Nature 17, 507 (1878). https://doi.org/10.1038/017507c0
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DOI: https://doi.org/10.1038/017507c0
