Improvements in Augers or Cutting Tools for Boring Wood and like Substances.
Реферат: 28,649. Cowley & Co., H. W., and Cowley, H. W. Dec. 15. Drills. - In rotary augers or cutting-tools for boring wood &c., the spiral grooves are tapered so that the cross - sections of the grooves are largest near the edges b and taper up to the edges c, so that the cuttings may be more easily removed. The body parts of the auger may be curved, as shown, or may be straight. They may increase in diameter from the cutting - end upwards.
Improvements in or relating to Apparatus for Separating and Feeding Sheets to Cold Rolls, Pickling, Tinning, and Galvanizing and like Machines.
Номер патента: GB191500107A. Автор: David Davies. Владелец: Individual. Дата публикации: 1916-02-04.