ary chair, and is capable of adjust- sonable expectation of success. This instrument consists of RECENT INVENTIONS. two short glass cylinders, around each of which are wound An improvement in spring-beds has been patented by Mr. ment in all directions. two parallel coils of fine insulated copper… … bination, with the pivotal beam or ing it at different distances and sepa- lever, of a magnet arranged to attract the central or pivotal sists in a spring-bed formed of a series of slats resting on rating it from the coil by insulating material, but I found that part of the beam and suspend it…
Boiler · Patents · Iron · Cast · Patented · Scientific American · Inches · Ultra violet · Iron heads · Cast Iron · Cross doubles · Flat cast · Upper leather · Large number · Silicious marl · Iron boiler
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