Roll film: Difference between revisions

==History==

[[File:Rollfilm 120.jpg|thumb|left|Classic 120 negative roll film, manufactured by [[Agfa-Gevaert]], with backing paper indicating total exposures available for 4.5×6, 6×6 and 6×9 cm camera film-frame sizes]]

David Henderson Houston (born June 14, 1841; died May 6, 1906),<ref name="bn-dhh"/> originally from Cambria, Wisconsin, patented the first holders for flexible roll film.<ref name="bn-dhh"/><ref name="mfh1940">[https://books.google.com/books?id=Yk5AAAAAIAAJ]{{cite book|last=Hammer|first=Mina Fisher |title=History of the kodak and its continuations|year=1940|publisher=The House of Little Books|pages=xv}}</ref> Houston moved to [[Hunter,_North_Dakota|Hunter]] in [[Dakota Territory]] in 1880. He was issued an 1881 patent for a roll film holder<ref>[http://www.google.com/patents?id=ImRPAAAAEBAJ] US patent #248,179 for ''Photographic Apparatus'' is dated October 11, 1881; issued to David H. Houston of Cambria, WI.</ref><ref name="cbeane2008">{{cite book|title=Flower|year=2008|publisher=Artisan Books|author=Christopher Beane|author2=Anthony F. Janson |page=12}}</ref> which he licensed to [[George Eastman]] (it was used in Eastman's [[Kodak]] 1888 [[box camera]]). Houston sold the patent (and an 1886 revision<ref>[http://www.google.com/patents?id=ttZlAAAAEBAJ] 1886 patent #355084</ref>) outright to Eastman for $5000 in 1889.<ref name="bn-dhh"/><ref>Hammer, 1940, p.55.</ref><ref name="mrp2007">{{cite book|last=Peres|first=Michael R.|title=The Focal encyclopedia of photography|year=2007|publisher=Focal Press|pages=78}}</ref> Houston continued developing the camera, creating 21 patents for cameras or camera parts between 1881 and 1902.<ref name="bn-dhh">{{cite web|last=Nemenoff|first=Ben |title=Houston, David Henderson|archiveurl=https://web.archive.org/web/20131029204317/http://www.nd.gov/arts/online_artist_archive/images-pdfs/H/Houston_DavidHenderson.htm | archivedate=29 October 2013 | url=http://www.nd.gov/arts/online_artist_archive/images-pdfs/H/Houston_DavidHenderson.htm|publisher=nd.gov|accessdate=5 September 2010}}</ref><ref>Hammer, 1940, pp.55ff.</ref> In 1912 his estate transferred the remainder of his patents to Eastman.<ref name="bn-dhh"/>