text_original: There was one important im  provement. The earlier engines had a single large flue running through the boiler between the fire box and the smokestack. The Rocket was fitted with a boiler, in which there were twenty five copper tubes, each three inches in diameter.
text_transcription: THERE WAS ONE IMPORTANT IMPROVEMENT THE EARLIER ENGINES HAD A SINGLE LARGE FLUE RUNNING THROUGH THE BOILER BETWEEN THE FIRE BOX AND THE SMOKESTACK THE ROCKET WAS FITTED WITH A BOILER IN WHICH THERE WERE TWENTY FIVE COPPER TUBES EACH THREE INCHES IN DIAMETER
phonemes: ðɛɹwˌʌz wˈʌn ɪmpˈɔːɹtənt ˈɪm pɹˈuːvmənt. ðɪ ˈɜːlɪɚɹ ˈɛndʒɪnz hæd ɐ sˈɪŋɡəl lˈɑːɹdʒ flˈuː ɹˈʌnɪŋ θɹuː ðə bˈɔɪlɚ bᵻtwˌiːn ðə fˈaɪɚ bˈɑːks ænd ðə smˈoʊkstæk. ðə ɹˈɑːkɪt wʌz fˈɪɾᵻd wɪð ɐ bˈɔɪlɚ, ɪnwˌɪtʃ ðɛɹwˌɜː twˈɛnti fˈaɪv kˈɑːpɚ tˈuːbz, ˈiːtʃ θɹˈiː ˈɪntʃᵻz ɪn daɪˈæmɪɾɚ.