| Title | Boiler valves and cocks, waste steam condensing globes 1820, 1837—1839, 1844, 1851, 1855, 1859, 1861, 1864 |
| Description | Boilers and Components and Parts of Boilers for Boat Engines. (15 items).
1435. Boiler Valves and Cocks, Waste Steam Condensing Globes. 1820, 1837-1839, 1844, 1851, 1855, 1859, 1861, 1864. 15 items.
1820s:
Safety valves and pipe for 40 horse boat engines - coloured reverse drawing, Aug. 1820.
Sketch of safety valves and pipe for 30 horse boat engines, Sep. 1820 [marked "One for Favourite new boiler"].
1830s:
Boiler feeding valves for various powers of engine - coloured reverse drawing, Dec. 1837.
Boiler feeding valves for various powers of engine - copy of the above drawing, May 1838.
Loaded valves for feeding pipes - coloured reverse drawing, May 1839.
Loaded valves for feeding pipes [copy of the above drawing] - coloured drawing, Aug. 1839.
1840s:
Scheme for new safety valves, when loaded above 5 lbs. - coloured reverse drawing, Feb. 1844.
1850s:
Sketch of alteration of cylinder cocks for H. M. S. Sans Pareil - coloured reverse drawing, May 1851.
Feed valve and cock for marine boilers - partially coloured reverse drawing, Sep. 1855.
Boiler valves, cocks and pipes for Omeo - partially coloured tracing, not dated [1859].
1860s:
Sketch of 2 inch feed cock for marine boilers - coloured original and partially coloured reverse drawings, Oct. 1861.
Sketch of feed cocks, 1½ inch, 2 inch & 2½ inch for marine boilers - partially coloured drawing, Dec. 1864.
Sketch of feed cocks, 3½ inch & 3 inch for marine boilers - partially coloured original and reverse drawings, Dec. 1864.
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