PURPOSE:To increase cycle life by filling lead paste in a grid, immersing the grid in the slurry comprising oxide particles, water, and binder, taking it out and pressing, then drying to form a plate. CONSTITUTION:Lead paste is filled in a grid for lead-acid battery, and the paste- filled grid is immersed in the slurry obtained by adding 100g of water to 30g of the mixture of alumina powder having...

PURPOSE:To eliminate extension and disconnection of a filament material, by providing such control means that in accordance with a change of tensile force generated by feed of the filament material wound to a bobbin, rotary speed of feed means of the filament material is automatically changed. CONSTITUTION:There are provided control means comprising ligaments 11, consisting of resilient material p...

Methods and compositions are provided for preparing polyhydroxylated polyiodo non-ionic contrast media. Particularly, substituted polyiodobenzamides are prepared, wherein the benzamide nitrogen is polyhydroxylated by allylic substitution on the nitrogen and oxidation of the olefinic group to provide for polyhydroxyl substitution. Amino substituents on the benzamide may be polyhydroxylated by allyl...

An agricultural tractor having two longitudinally aligned back wheels on each side receiving an endless track of the "caterpillar" type and steerable front wheels which are controlled automatically by a predetermined line of travel whereby the tractor is maintained within margins equidistant from the line of travel defining a path which it is desired the tractor follow to perform agricultural oper...