Account of an improvement in the machine for producing engravings of medals, busts, &c. directly from the objects themselves, in which the distortions hitherto attending such representations are entirely obviated

A paper was read, entitled “Account of an Improvement in the Machine for producing Engravings of Medals, Busts, &c. directly from the Objects themselves, in which the Distortions hitherto attending such Representations are entirely obviated.”By Mr. Bate. Communicated by J. G. Children, Esq. Sec. R. S. Some printed representations of medals having been received from America, about fifteen months ago, evidently effected by some process of ruling, Mr. Bate, jun. constructed an instrument for accomplishing the same object; but the results, both of the American method and of the one invented by Mr. Bate, were attended with a degree of distortion. This the author has ingeniously obviated, by giving an inclination of 45 degrees to the plane in which the tracing-line is moved over the surface of the object of which a representation is to be given.