“ If, as that court says, and we think rightly says, the omission of the muller-stones is a real improvement in the process of obtaining the oil from the flaxseed; if it produces more oil and better oil-cakes, and it is new, and was not used before,-why is it not patentable discovery? and why is not such new method of obtaining the oil and making the oil-cakes a process? There is no new machinery. The rollers are an old instrument, the mixing machinery is old, the hydraulic press is old; the only thing that is new is the mode of using and applying these old instrumentalities. ”

“ But while we are satisfied that the invention is that of a process, it is nevertheless limited by the clear terms of the specification, at least so far as the crushing of the seed is concerned, to the use of the kind of instrumentality described, namely, in the first part of the process, to the use of powerful revolving rollers for crushing the seed between them under pressure. ”

“ They are then passed directly, without the use of muller-stones, to the mixing machine, to be stirred, moistened, and heated by the admission of small jets of water or steam to the mass, and then transferred to the presses. The oil-seeds are by my new process first conveyed to a hopper and fluted seed-foller at the top of an upright feed-tube of the crushing-machine, by which the seeds are fed, under suitable pressure, to revolving rollers of sufficient power, which run at a surface speed of about one hundred and fifty to two hundred feet per minute. ”