850 Transactions of the American Institute. 



variety of form in the material wrought, whether an oval, cylindrical or 

 plane surface, or any other that may be desired. 



Fourth, to adapt the mechanism of the machine to the production 

 of the pattern from the original work of art. 



Fifth, to combine the solution of the above four mathematical prob- 

 lems in a simple, durable, practicable form, the machine as a whole 

 being perfectly automatic in its action. 



In the practical operation of this invention, the work of art, what- 

 ever it may be, whether a bust, or sculptured vase, or an ordinary 

 piece of carving, is placed in the machine ; a piece of wood of the 

 requisite size is at the 'same time placed in the proper position in the 

 machine from which the pattern for future use is to be cut. 



The machine, on being put in motion from the work of art, what- 

 ever it may be, will produce a pattern in the wood from which a dupli- 

 cate of the work of art may be produced. L metal cast of the pat- 

 tern, after being produced in the manner described, on an almost plain 

 surface, is then taken — filling, in this invention, the place of the stereo- 

 type plate in the art of printing. 



The metal cast of the pattern being put into a proper position in 

 the machine, and a suitable form of wood, stone or metal being placed 

 in the position occupied by tlie work of art during the process of 

 cutting the pattern, as above described, the machine, with a suitable 

 cutting point and requisite amount of motive power, will automati- 

 cally produce the work of art, whatever it may be, with a rapidity in 

 proportion to motive power applied. 



The principles involved in this invention and in their application 

 are entirely novel in the field of mechanical art. As a combination 

 of intricate and delicate action, with the great strain resulting from 

 the application of a large amount of motive power, yet with all the 

 delicacy and sensitiveness preserved and applied in the midst of high 

 velocities and ponderous effect, with a mathematical precision that is 

 beyond criticism, this invention is truly a crowning, and as yet the 

 grandest, triumph in applied dynamic science. 



As illustrative of this point, we would observe that to the cutting 

 point, where a delicacy and sensitiveness in action is required that will 

 produce the most delicate lines and features found in an elaborate piece 

 of statuary, in the machine which I recently saw in operation, from 

 one to four horse-power as a motive agency could be applied. 



As a piece of automatic machinery, in simplicity and general 

 adaptation to the end desired, competent judges pronounce this 

 invention to be unrivaled. 



