An Advantageous Concern.
[n.d. c.1813.]
Letter press and engraving; three pages, 8vo. 172 x 140mm (6¾ x 5½"). Laid on album sheet left side.
Joseph Hamilton here lays out his patents and brick designs that have air holes for both oblong and triangular bricks. References below from "Nineteenth Century Brickmaking Innovations in Britain: Building and Technological Change" by Kathleen Ann Watt, 1990. 'Machinery capable of extruding hollow tubes was patented as early as 1810 by Johann Deyerlein (British Patent No.3319), further developed by Yoseph Hamilton in 1813 (British Patent No.3685)'. 'Use of a screw to provide continuous pressure on the contents of the hopper which allowed an uninterrupted flow of clay into the moulds (British Patent No.3685, 1813, Joseph Hamilton)'.
[Ref: 52420] £160.00
Letter press and engraving; three pages, 8vo. 172 x 140mm (6¾ x 5½"). Laid on album sheet left side.
Joseph Hamilton here lays out his patents and brick designs that have air holes for both oblong and triangular bricks. References below from "Nineteenth Century Brickmaking Innovations in Britain: Building and Technological Change" by Kathleen Ann Watt, 1990. 'Machinery capable of extruding hollow tubes was patented as early as 1810 by Johann Deyerlein (British Patent No.3319), further developed by Yoseph Hamilton in 1813 (British Patent No.3685)'. 'Use of a screw to provide continuous pressure on the contents of the hopper which allowed an uninterrupted flow of clay into the moulds (British Patent No.3685, 1813, Joseph Hamilton)'.
[Ref: 52420] £160.00