t In the world, is No.6,469, granted May 22, 1849 to Abra- llce bellows, worked from sides ofboat by upright poles. When a vesselso equipped strikes shoal water thebellows are inflated by pressure on ham Lincoln for method of lifting ves- the poles, which is supposed to raise sels over shoals. The… … MODF.L OF ABRAHAM LINCOLNS DEVICE FOR LIFTINT, VESSELS OVE2 SHOALS.
