196

DETAILS OF (PADDLE-WHEEL)

This novel arrangement of the valves is forone particular attainment, viz., a certaincompactness of space occupied transverselyand vertically, and by no other position forthe valves could this be accomplished. Thegeneral practice being either a lateral

valves is too often omitted in some arrange-ments, even by the leading engineers ofthe day. It is too common the practice tobox in the foot valves, and depend aloneon the removal of the air pump cover, trunk,and piston, to inspect the valves in question

Fig. 42.

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MESSRS. WATT’S INJECTION CONDENSER FOR OSCILLATING ENGINES.

position, or similarly as the foot valvesare, it is obvious then that, with thearrangement in question, room is econo-mised by the adoption of the same. Doorsare secured opposite each set of valvesfor the purpose of inspection or renewal.This acquisition in relation to the foot

only, which result is always prior to repair orrenewal.

The injection pipe is seen both in elevationand plan, perforated on the upper side only :its position in the condenser is correct inprinciple and thus certain in practice, beingat such a convenient distance from the