Talk:Typebar

Typebar's illustrating picture is not suited to the evidence for David's statements on two points.

Jamming typebars on front-strike machine and with too much tangles

This picture is front-strike machine's and staged event 'cause of too much tangles. Jamming typebars' picture should be on up-strike-machine's and during actual operation. It's because this picture should illustrate David's statements. The type-writing machine at prototype era, it should have up-strike mechanism. --Raycy (talk) 17:07, 10 September 2009 (UTC)[reply]
David wrote new doc that is David, Paul A. (2000), "Path dependence, its critics and the quest for ‘historical economics’", and I haven't read though. It should be checked because his "jamming problems led to QWERTY" theory was on suspicion for a while.--Raycy (talk) 18:15, 10 September 2009 (UTC)[reply]
Associate Professor Koichi Yasuoka points out two facts that should be proven ,

1. The existence of interfere nuisance of type-bars

2. Strong regulation between keys' layout and type-bars' arrangement

,during the prototype-machine era.--Raycy (talk) 18:40, 10 September 2009 (UTC)[reply]
A.Professor Yasuoka also say up-strike machine's type-bar should never been called as 'arm'. I gess it might be called as 'arm'.--Raycy (talk) 18:40, 10 September 2009 (UTC)[reply]