aken apart and joints this improvement may be obtained of the inventor, Mr. dynamos which generate the electricity for the 1,000 broken, is shown in the illustration, which represents Robert D. Peters, No. 35 North Meridian Street, Ander- a combined cooler and filter. This filter is designed… … method formerly employed. The system is clearly Drexel and Armour Institutes. THE McCONNELL FILTER. shown in the accompanying cut. It discards entirely ee the old pin block. A rib is cast on the surface of the and disease germs, and is highly indorsed by the med- AN IMPROVED RAILWAY BLOCK SIGNAL.…
Internet Archive · Public domain (published before 1931). Free to use for anything.
