Author: Gibson, J E;Jenkins, W M
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Gibson, J E;Jenkins, W M
A FORMAL request was made by the Union of South Africa Branch on 1 lth January, 1956, that a visit to the Union by the then President, Mr. Stanley Vaughan, and the Secretary, Major R. F. Maitland, should be undertaken and would be greatly appreciated by Branch members. Owing to business commitments, however, Mr. Stanley Vaughan was unable to accept this invitation. The Union of South Africa Branch was informed on 2nd March, 1956, that Mr. Guthrie Brown, the 1956-57 President, and his wife, accompanied by Major Maitland, would be glad to visit Africa during August and September, 1957.
A General Meeting of the Institution of Structural Engineers was held on Thursday, 3rd October, 1957, at 6 p.m., when the Presidential Address for the Session 1957-1958 was given by Professor Sir Alfred Pugsley, O.B.E., D.Sc.(Eng.), F.R.S., M.T.Struct.E., M.I.C.E., F.R.Ae.S.
THIS paper describes a mathematical and experimental investigation into the behaviour of gantry cranes when long travelling. The work was started because of the severe wear suffered by the crane wheel flanges and the gantry rails in a number of heavy engineering works. Cranes designed with either cylindrical or conical tread wheels are in common use, and in either case a pair of wheels may or may not be made to rotate at identical speeds by means of a cross-shaft. These systems are analysed and their faults discussed. Axial float of the wheels in their bearings and the tread widths of wheels are also discussed. P. M. Worthington