Patent number 94,116, granted on August 24, 1869, officially recognized Harriet Morrison Irwin as the first American woman to secure an architectural design patent. Her proposal focused on the structural advantages of a hexagonal dwelling, specifically aiming to optimize living space, lighting, and internal airflow through geometric efficiency rather than traditional rectilinear layouts.
Early Life and Education
Born in 1828 in Mecklenburg County, North Carolina, Harriet Abigail Morrison was the daughter of Mary Graham Morrison and Reverend Robert Hall Morrison, the latter serving as president of Davidson College. Her father oversaw her early education at home before she attended the Salem Female Academy. She later married James P. Irwin in 1849 and eventually settled in Charlotte, where they raised nine children.
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Irwin’s interest in architecture emerged during a local construction surge in 1869. Influenced by the writings of John Ruskin and Bindon Blood Stoney, she sought to integrate nature and improved health standards into residential design. She also encountered Orson Squire Fowler’s work on octagonal houses but contended that a hexagonal form provided superior internal nesting capabilities and aesthetic variety. Her design utilized a central chimney stack serving multiple rooms, with the interior partitioned into hexagonal and lozenge-shaped spaces.
Professional Patent and Promotion
Following the acquisition of her patent, she co-founded the Hill and Irwin Land Agency alongside her husband and brother-in-law, Daniel Harvey Hill. This firm facilitated the construction of at least two homes in Charlotte based on her specifications. To further advocate for her architectural philosophy, she published a book in 1871 titled The Hermit of Petraea, which articulated the potential physical and mental health benefits associated with her unique domestic spatial arrangements.
Influence and Legacy
Irwin’s career occurred during an era when professional architecture remained largely restricted to men. Her work centered on the domestic sphere, aligning with contemporary social expectations while simultaneously establishing a precedent for future female professionals. She died in 1897 and is interred at Elmwood Cemetery in Charlotte. Her residence at 912 West Fifth Street served as a practical application of her patented concepts, though subsequent developments in the field eventually moved toward different standards.
Fast facts
- Born: 1828, Mecklenburg County
- Died: 1897, Charlotte
- Patent Number: 94,116
- Patent Date: August 24, 1869
- Marriage: James P. Irwin, 1849
- Notable Publication: The Hermit of Petraea, 1871
- Burial Site: Elmwood Cemetery, Charlotte
Questions readers ask
Was Harriet Morrison Irwin the first woman to design a house?
She was the first American woman to receive a patent for an architectural design.
Are any of her hexagonal houses still standing?
No, the houses built in Charlotte based on her patent have been demolished.
