. It will be seen by referring to The last object named, and which is a very sures to secure a patent for a useful improve- fig. 2 that the rims are of a curved form, and above. desirable one in many cases, is accomplished ment in iron floors, which is also suitable for by attaching the arms, &c,… … are enabled to examine objects outside of the or shortened to suit doors of various thick- This is an improvement on Door Springs, by This door spring consists essentially of a vessel. ' Grapples, &c, are employed for nesses ; thus making the spindle an extending Dr. A. Westcott, of Syracuse, N.…
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