the disk was placed a horseshoe magnet with The simple and efficient fire escape shown in the annexed wire tube and the case is an annular pocket in which all its poles very, near the rows of holes; on the other side were engraving is the invention of Mr. Henry B. Church, of matter separated from… … the dust is swept and retained upon the pan instead of pass- VALENTINE’S IMPROVED DUST-PAN. ing underneath it. It can be moved easily around the floor CHURCH’S FIRE ESCAPE. with the foot, the dust remaining on the pau. There is no filter may be connected to any part of the conductor or to ing the…
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