| Description | Steam Boat Engines (19 items).
1132. Port Patrick Packet Arrow (OV & OW). Apr., Jul., Oct. 1833, Mar. 1837, Mar. 1840, Jan. 1841. 19 items.
Two 30 horse power side lever boat engines, with 31½ inch cylinders, 3 foot strokes. Boat later Ariel 1837.
Sections and plan of the boiler (also used for Watersprite & Danube boat No. 12), cross-section, plan of the engine deck beams, longitudinal section of engine and boiler, plan of the engine sleepers, cross-section at the back of the boiler - reverse drawings made in the London office; paddle wheel, engine and paddle shafts, cranks etc. - coloured original and coloured reverse drawings; connecting rods and air pump side rods - coloured original drawing. All these drawings except the last item bear letter codes.
Also the following later items: sketch of new working gear shafts and plummer blocks for 35 horse engines - original and reverse drawings, blow-out pipes and cocks - original and coloured reverse drawings, conical valve pipe - original drawing and tracing, Mar. 1837.
Also the following items from when the boat was re-named Ariel: boiler for two 38 horse engines - coloured original and coloured reverse drawings, Mar. 1840; upper headstock frames - partially coloured original and partially coloured reverse drawings, Jan. 1841. All the drawings bear letter codes.
Original Portfolio or 'Book' No. 871. Catalogue of Old Engines p. 318.
For H. M. Post Office, Dover station. The Arrow was built by W. Evans of Rotherhithe. She was moved to the Port Patrick station in 1825, but in 1833 she was fitted with 30 horse engines and returned to Dover for the Ostend service, being replaced at Port Patrick by the Spitfire. She was re-named Ariel in 1837 when the Navy took over the Post Office packet fleet. As Ariel, she took part in trials against the the screw-propelled boat Archimedes in 1840. The drawings for the first four Dover packets were kept in the same book, No. 767. The drawings for the new 30 horse engines were placed in a new book, No. 871.
|