Penghalau rintangan: Perbedaan antara revisi

Penghalau rintangan diciptakan oleh [[Charles Babbage]] pada abad ke-19, selama bekerja di Liverpool and Manchester Railway.<ref>{{Cite book|title=Charles Babbage, Pioneer of the Computer|url=https://archive.org/details/charlesbabbagepi0000hyma|last=Hyman|first=Anthony|publisher=Oxford University Press|year=1982|isbn=0-19-858170-X|pages=142–143[https://archive.org/details/charlesbabbagepi0000hyma/page/142 142]–143|quote=Babbage suggested to Hodgson of the railway company what was later to be called a 'cow-catcher' for sweeping obstacles off the line.}}</ref> Namun, penemuan Babbage tidak dibuat, dan tak diketahui secara pasti siapa yang mengetahui gagasan Babbage.