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Recent Inventions

Recent Inventions image
Parent Issue
Day
15
Month
May
Year
1903
Copyright
Public Domain
OCR Text

RECENT INVENTIONS.

In the automatic apparatus for making altitude and temperature tracings in balloons sent above the heights in which ink would be frozen Professor Ossman has invented a pen which writes red with saltpeter ink on lamp-blacked paper.

A nickel in the slot X ray machine has been invented. The observer places a coin in the slot, moves a lever, puts his hand, or whatever he wishes to examine, into a box without any sides and looks down at it through a fluorescent screen which forms the top of the box.

The latest explosive shell has the greater part of its interior filled with lead, which, when fired, is melted by a burning composition, so that when the shell bursts the molten lead is scattered to a considerable distance, and the smallest particle causes a nasty wound.