This can easily be done if a reliable BY HENRY H. KIGGS, PRESIDENT OF EUPHRATES COLLEGE. wax or solder to one side or the other. The shaft The Scientific American has occasionally told its clock is available. A bit of platinum wire soldered rests on uprights, U, of thick strap iron, which are to… … by a frictionless bearing C, against a solid wall. The thin varnish over the back of the sheet. If a register A HOME-MADE SEISMOGRAPH. drum is also hung from the wall by a similar bearing is kept, at least the following data should be entered at C". The bearings are made as follows: The half-…
Patents · Machine · Drum · Wire · Supplement · American supplement · Scientific American · Reinforced concrete · Model commission · Patent office · Years ago · Short arm · Iron wire · Buy machinery · Wireless telegraph
Internet Archive · Public domain (published before 1931). Free to use for anything.
