| Title | Working gear parts, 1777, 1797, 1799, 1800, 1802, 1803, 1806, 1824, 1827, 1828, not dated |
| Description | Components and Parts of Land Engines. (34 items).
1388. Working Gear Parts. 1777, 1797, 1799, 1800, 1802, 1803, 1806, 1824, 1827, 1828, not dated. 34 items.
1777:
Letter from Thomas Dudley to James Watt dated Bristol, 26 May 1777, with a partially coloured drawing of part of working gear for an engine for a Cornish mine.
Drawing of part of working gear for a Cornish mine engine, copied from Dudley's drawing above - partially coloured drawing, not dated [1777].
1790s:
Parts of working gear for 4 horse engine - reverse drawing, Aug. 1797.
Catches for working gear for 4 and 6 horse engines - partially coloured original and reverse drawings, Nov. 1799.
1800s:
Catches for 28 to 32 horse engines, not dated [1800s].
Catches for working gear for 14, 16, 18 and 20 horse engines - partially coloured reverse drawing, Feb. 1800.
Bolt etc. for bottom of working gear for 16 to 20 horse engines - reverse drawing, Aug. 1802.
Parts of working gear for 10 to 14 horse engines - 5 large sheets of reverse drawings, Feb. 1803.
Parts of working gear for 20 horse engines - coloured drawing, May 1806.
1820s:
Part of working gear for 66 inch engines with 9 foot strokes, Feb. 1824.
Parts of working gear for 64 inch engine SW [West Middlesex Water Works], Feb. 1827.
Parts of working gear for 36 inch single-acting engine - 9 sheets of drawings, Jul. 1827.
Parts of working gear for 48 inch cylinder - 4 sheets of drawings, Jul. 1828.
Not dated:
Hand for a 24 to 30 inch engine.
4 sheets of undated and untitled sheets of drawings of parts of working gear. |