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Straining Screws
Straining Screws
Straining Screws
Straining Screws

Straining Screws

Associated (Aberdeen, Scotland, 1798 - 1996)
Associated (Aberdeen, Scotland, 1868 - 1940)
Associated (Aberdeen, founded 1857)
Designer (Aberdeen, Scotland, 1868 - 1940)
Date1902
Object NameDrawing
Mediumpaper
ClassificationsScience And Technology
AcquisitionPresented in 1993.
LocationView by Appointment
Object numberABDMS029213
Keywords
About MeTracing of straining screw, almost certainly for use on a suspension bridge.

Stamped "Louis Harper drawing". The younger son of John Harper (Senior), Louis Harper continued the work of his father in designing and constructing the suspension bridge which had made Harper and Company and Harper's Limited famous.
Harper Family
Harper Family
John Harper Sr.
Image Not Available for Louis Harper And Others
Louis Harper And Others
Louis Harper
Image Not Available for Louis Harper And Gymnastic Team
Louis Harper And Gymnastic Team
Louis Harper
1891
Image Not Available for School Certificate
School Certificate
Louis Harper
Image Not Available for School Certificate
School Certificate
Louis Harper
Suspension Bridges in India
Suspension Bridges in India
Louis Harper
n.d.
Louis Harper And Others
Louis Harper And Others
Louis Harper
1884
Plan of Bridge, Dundee
Plan of Bridge, Dundee
Harper and Company
1872
Louis Harper Company Letterhead
Louis Harper Company Letterhead
Louis Harper
Louis Harper Company Letterhead
Louis Harper Company Letterhead
Louis Harper
Model Of Suspension Bridge
Model Of Suspension Bridge
John Harper Sr.
1884
Model Wire Suspension Bridge
Model Wire Suspension Bridge
John Harper Sr.
1884
Model Of Suspension Bridge
Model Of Suspension Bridge
John Harper Sr.
1884
Model Of Suspension Bridge
Model Of Suspension Bridge
John Harper Sr.
1884
Image Not Available for Letters Patent Granted to John Harper for Invention of Improvements in Pillars and Hydraulics for Straining Wire
Letters Patent Granted to John Harper for Invention of Improvements in Pillars and Hydraulics for Straining Wire
Harper and Company
1863
Image Not Available for Letters Patent Granted to John Harper for Invention of Improvements in Pillars and Hydraulics for Straining Wire
Letters Patent Granted to John Harper for Invention of Improvements in Pillars and Hydraulics for Straining Wire
Harper and Company
1863
Image Not Available for Cassier's Magazine, Vol. XVIII, May - Oct 1900
Cassier's Magazine, Vol. XVIII, May - Oct 1900
1900
Image Not Available for Cassier's Magazine, Vol. XIX, Nov 1900 - Apr 1901
Cassier's Magazine, Vol. XIX, Nov 1900 - Apr 1901
1900-1901
Image Not Available for Cassier's Magazine, Vol. XX, May - Oct 1901
Cassier's Magazine, Vol. XX, May - Oct 1901
1901
Image Not Available for Cassier's Magazine, Vol. XXI, Nov 1901 - Apr 1902
Cassier's Magazine, Vol. XXI, Nov 1901 - Apr 1902
1901-1902
Image Not Available for Cassier's Magazine, Vol. XXII, May - Oct 1902
Cassier's Magazine, Vol. XXII, May - Oct 1902
1902
Image Not Available for Cassier's Magazine, Vol. XXIII, Nov 1902 - Apr 1903
Cassier's Magazine, Vol. XXIII, Nov 1902 - Apr 1903
1902-1903
Image Not Available for Cassier's Magazine, Vol. XXIV, May - Oct 1903
Cassier's Magazine, Vol. XXIV, May - Oct 1903
1903
Image Not Available for Cassier's Magazine, Vol. XXV, Nov 1903 - Apr 1904
Cassier's Magazine, Vol. XXV, Nov 1903 - Apr 1904
1903-1904