As mentioned in the Kodachrome thread, I've attached a PDF of the original Richard Bent / Rowland Mowrey patent which I sourced as a PDF off espacenet. You can get to this service via your local european patent office (I went via British Patent office )
This version is in English, Espacenet will also allow you to download versions in different languages.
DE2159903 (B2) German
US3658525 (A) Original American patent
CH536502 (A) Swiss Patent
FR2117338 (A5) French Patent
JP51021582 (B) Japanese Patent
Otherwise go to the US patent office and download it from there