second and similar prism, where it is broken A BEDCLOTHES FASTENER. anew in order to go to the ocular. It might be sup- posed that the use of two pris:ns would suppress much The illustration represents a simple and inexpensive light and cause the loss of thebeneflt resulting from the device for… … the rays were re- duced. The plunger is normally held in raised posi- JOY'S BEDCLOTHES FASTENER. flected from mir- tion by a spring, but is adapted to be forced downward rors. It was in by a yoke lever, a cross bar of which extends through injure the most delicate quilt or other bed covering,…
Patents · Portland · Locomotive · Adapted · Scientific American · Inventor · Declination north · Unity point · Horse power · American locomotive · Square feet · English locomotive · Torpedo boat · Portland cement · Stereoscopic field
Internet Archive · Public domain (published before 1931). Free to use for anything.
