| Description | Boat-Mounted Pumping and Dredging Engines (9 items).
1279b. River Witham Drainage, Lincolnshire (ZD). Mar. 1810, Jun., Jul. 1811, Aug. 1818, Apr. 1845, Jan. 1846. 9 items.
10 horse power independent crank engine, with 19¾ inch cylinder, 2½ foot stroke, parallel motion, [cast iron beam, cast iron connecting rod].
Also dredging machinery.
Side view of the engine and plan of the engine and boiler marked "boat engine for Mr. Rennie"; side view and plan of the boat and dredging machinery showing the position of the engine marked "from Mr. Rennie"; side view of the engine, longitudinal section of the boiler, plan and cross-section of the engine and boiler (4 drawings on 1 sheet) - partially coloured original and reverse drawings. The last 2 items bear letter codes.
Also the following later items:
Plan of boat, engine and dredging machinery marked "Plan of the Mud Boat (late Witham) - Mr. De Couttz, from Mr. Rennie's drawing, Aug. 1818".
Section and plans of boiler for Eau Brink - original and partially coloured reverse drawings, Apr. 1845, marked "formerly Witham drainage 10h engine ZD".
Shaft required for the Eau Brink Dredge - partially coloured original and partially coloured reverse drawings, Jan. 1846 (these drawings show the engine as a 12 horse).
Original Portfolio or 'Book' No. 658, 730.
For the Commissioners of the River Witham, Lincolnshire. The engine was ordered by John Rennie. It was mounted in a boat and worked dredging machinery. A Mr. de Couttz was looking to buy the engine in 1818, for dredging the harbour at Havre de Grace, and drawings for him were placed in Book 730, a book of independent engine drawings. Either de Couttz did not actually buy the engine or he sold it on, because it was eventually sold to the Commissioners of Eau Brink Drainage. This engine was omitted from the Catalogue of Old Engines.
See also: 4/93 (Engine Order Book No. 7).
Incoming Correspondence (from John Rennie). |