ɐ vˈɛɹi vˈæljuːəbəl ɪnvˈɛnʃən wʌz pˈæʔn̩ɾᵻd wˌɪtʃ ɐlˈaʊd ðə lˈɪftɪŋ ʌv sˈɪlɪndɚ hˈɛdz, dᵻkˈɑːɹbənˌaɪzɪŋ ænd vˈælv ɡɹˈaɪndɪŋ wɪðˌaʊt dɪsmˈæntəlɪŋ ðɪ ˌoʊvɚhˈɛd kˈæmʃæft.
A very valuable invention was patented which allowed the lifting of cylinder heads, decarbonising and valve grinding without dismantling the overhead camshaft.