image Smeaton J, IM006199
Image number: RS.5469
Credit: © The Royal Society
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Cole-Bentinck chain pump

Date

1771

Creator

Collet, Engraver

After

Object type

Archive reference number

Image reference

Material

Technique

Dimensions

height (print): 515mm
width (print): 350mm

Subject

Description

Design for an improved ships chain pump by John Bentinck FRS (1737-1775), British Navy Captain, and William Cole. Sectional elevation, 1:24 scale. From Smeaton volume 2, fol. 117.

A patent (no. 982) was granted for the design on 17 January 1771 for chain pumps for raising water out of ships. The 'Cole-Bentinck' pump was adopted for use in all Royal Navy ships.

Object history

The Royal Society John Smeaton collection consists of 6 volumes of his working drawings.

The drawings (with supplementary manuscripts and engravings) were classified by mechanical engineer, John Farey (1791-1851) under the following 6 headings: I. Windmills and watermills for grinding corn; II. Mills for various purposes and machines for raising water; III. Fire engines for raising water; IV. Bridges and Buildings; V. Canal works, sluices, and harbours; VI. Canals and river navigations.

Smeaton made all his drawings himself. Later in his career he employed a draughtsman, but still continued to draw the lines of all his drawings to the proper scale in pencil on cartridge paper which he called sketches. Fair copies of the sketches were then made on drawing paper by the draughtsman, William Jessop or his successor Henry Eastburn, and Smeaton's daughters frequently helped in the shadowing and finishing using ink wash.

Associated place

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