Method of and apparatus for loading or dumping spoil or other suitable materials

摘要

422,433. Linkwork. WILLS, G. T., 20, Stanford Road, Kensington, London.-(Hamilton, C. W. F. ; Irishman Creek Station, Fairlie, New Zealand) Oct. 25, 1933, No. 29585. [Class 80 (iii)] [See also Groups XXX, II, and XXVI] A jigging screen and jigging shoot are connected to cranks 43, 53 on a shaft 44 which is oscillated by a rotating crank disc 58 through a link 56 with two universal joints 67, 59.