| Description | Independent Beam (Crank) Engines (7 items).
846. Bally Ellen & Steart, near Bath (ZM). Apr., May 1808. 7 items.
10 horse power independent crank engine, with 19¾ inch cylinder, 2½ foot stroke, "wiggle waggle" arrangement, cast iron beam, cast iron connecting rod.
Reverse side view and plan of the engine, cross-section of the engine; coloured reverse cross-section, longitudinal section and plan of the boiler; partially shaded reverse section and plan of the engine house and boiler; letter from George Steart dated Montalt Mill, 5 Apr. 1808, with plan of part of the premises; coloured plan of the engine, boiler, "paper engine", shafts etc. sent by Pyke & Samuels, 2 May 1808. All the drawings except the last 2 items bear letter codes. Some of the drawings made at Soho have crossed out drawings of a standard beam engine on the back.
Original Portfolio or 'Book' No. 597. Catalogue of Old Engines p. 236.
For Bally Ellen & Steart. Montalt Paper Mill, Combe Down, near Bath, Somerset. This engine was of an usual arrangement which Boulton Watt & Co. referred to as "wiggle waggle". The inner end of the beam was connected directly to the piston rod, and the outer end was mounted on the engine framing. The connecting rod was connected to the beam between the beam's centre and inner end, and worked the crank shaft which was mounted in the centre of the base frame. Boulton Watt & Co. only made four engines employing this arrangement: this one; one for Thomas Lowe in 1807 [see Portfolio 5/845]; and two for Philips & Lee in 1807 and 1810 [see Portfolio 5/844a & b]. The geographical section of the List of Engines made at Soho erroneously describes this as an 8 horse engine.
See also: 4/93 (Engine Order Book No. 7). |