E. NByram of Sag Harbor, L. L, has ta- improvements in the hanging and construction of pendulums. The former improvement consists in the employment ol the lens-formed properly ?? caking, with the rod passing directly through (lie axis or the lens. The other improvement consists in the combination with a regulating weight applied to the middle of a wooden pendulum rod, of a compensating apparatus, consisting of metal rods of such length, and so applied, as to precisely counteract the expansion or contraction of the suspension spring to which the rod is attached, by their contrary action, in raising and lowering the regulating weight Mr. Eyram is one try, and at the concern of Messrs. Sherry Byram, are manufactured the best clocksin the world—superior, it is said, to those of the celebrated Dent, of London.
This article was originally published with the title "Improved Pendulum" in Scientific American 8, 8, 60 (November 1852)