Admiralty – Drawings for Various Steamers, “Group 1”, 1827, 1844, 1846

Sketch of spare boiler for 2 40 horse boat engines for Post Office, May 1827 (marked "Say upon the same Plan as the second Boiler for the Vixen" and "put into Crocodile?").

Myrmidon (two 75 horse engines), Jun., Jul. 1844:
Injection pipes and cocks, blow out pipes and cocks, bilge pumps and pipes, waste water pipes; steam and feed pipes - 2 coloured drawings, both bearing letter codes. Also small sketch of part of framing.

Eurotas and Horatio (two sets of four 87½ horse oscillating engines), 1846:
Apparatus for resisting the thrust of the screw - coloured original and reverse drawings made in the London office (marked "No. 1 not adopted see drawing No. 2"); apparatus for resisting the thrust of the screw - coloured original drawing made in the London office (marked "No. 2"); propeller shafts - original and reverse drawings (the reverse drawing is marked "Direct copy to the Patent Shaft Co."); working, starting and eccentric gear - partially coloured reverse drawing made in the London office. All these drawings except the first 2 items bear letter codes.

Original Portfolio or 'Book' Nos. 951, 973.

For the Admiralty. The drawings for the Myrmidon were removed from Book 951, while those for the 44 gun frigates Eurotas and Horatio were removed from Book 973. The original index card lists a unnamed drawing dating from 1833 as being with this group. This drawing is now missing.

See also: Portfolios 5/1229, 6/1 (Myrmidon); 5/1231 (Eurotas and Horatio).