Careful experiments and practice with a view to properly proportion the motive power to the work to be done has prepared us for giving valuable information concerning steam engines for the purpose of flouring mills. And when requested will furnish the engines themselves combining the necessary qualities, and see in person that all the parts, speed, &c., &c., be exactly adapted to do the work. When we furnish the engine, with the other supplies of the mill, which is frequently the case, our customers may rest assured all will be satisfactory as regards style of finish, durability, sufficiency of power, and economy in the use of fuel. We do not make engines ourselves, but purchase them of the best makers, and if we should be consulted in all cases of whom to buy, style, kind, &c., or be ordered to supply the engine direct, our customers will be more likely to get what is best.
Patented September 4, 1866, and August 1, 1871.]
We do not think it necessary to write at length on the advantages of this improvement, nor print our files of recommendatory letters. The necessity among intelligent millers and mill-owners for a good and durable self-tramming driving iron is already well established. Many attempts have been made to devise something for the purpose, and the results are numerous; among them the “slip driver,” and those with loose oscillating appendages for the weight of the stone to rest upon and be driven by, and when adapted to their work, imperfectly accomplish the design; their lack of durability, the obstruction presented to the free passage of grain or middlings to be ground, and the fact that their form does not admit of a free adjustment while driving the stone are the chief objections. It has been established that these faults are entirely avoided by the improvement illustrated in the accompanying cut, in which Fig. 1 is an elevation showing the iron ready to be cemented in the eye of the runner. Fig. 2 is a view of the bottom and inside, with the sockets for the reception of the ends of the driver. Fig. 3 is a sectional elevation of all the parts, including the spindle and driver.
The bridge S S, in which the steel cock-eye is placed, is in the form of an inverted arch, and is a portion of the entire outside part. Being in this shape, it has the double advantage of increased strength, and, by the attachment above the point where the grain is distributed, making no obstruction whatever to the passage of the grain or other substance to be ground. The bearings for the ends of the driver, C C, are cast on the adjustable section of the iron shown on the inner part of Fig. 2. This being adjustable on the steel pins shown as passing through the lugs A A, gives to the ends of the driver at all times a free and equal bearing in a lateral direction. The object gained by this arrangement is the application of power by the driver to the inner section in a direct plane, parallel to the face of the runner stone, said plane at the same time passing through the cock-eye--hence there is no tendency whatever to tip the stone.