Improvements in Portable Heaters or Forges for Heating Rivets and for such like Purposes

摘要

19,695. Macdonald, J., and Macdonald, T. Sept.9. Impact-wheels.-A portable heater or forge for heating rivets or for like purposes is shown in Fig. 1. Air is delivered to the tuyÞre d by the fan or air propeller f which is driven by a jet of compressed air controlled from the cock n. The compressed-air nozzle, Fig. 2, has a tapered passageway in it which constitutes a screw union for connecting up the air pipe k. The fan is of suitable construction, and air is admitted within the casing by the inlet h.