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John Hastings French
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21,555. French, J. H. Oct. 12. Draught, indicating.-Comprises improvements in that type of apparatus for indicating the draught of ships in which a pair of closed vessels a are fitted to the ship's side and are provided with passages communicating with the sea and with pipes g leading to pressure gauges fitted in the chart room h. The invention consists in providing a specially sensitive Bourdon or like pressure gauge i, at end of each pipe g. A double scale is fitted to each gauge to indicate the draught in both fresh and salt water. The trim of the ship may be determined by fitting closed vessels at each end communicating as above to gauges in the chart room.
GB190821555D1908-10-121908-10-12Means for Indicating and (or) Recording the Draught of Ships.
ExpiredGB190821555A
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