They are 3 feet 6 inches wide and 6 feet 2 inches high to top of elevator.
PORTABLE MILL AND BOLT.
In our portable Mill and Bolt we have condensed all the advantages required of a custom mill in making a prime article of flour and much better suited for the purpose. We have not been sparing in the material necessary to make every part strong and durable, and they will bear to be continually used with a strong power without any part yielding in the least. The bolts are arranged for making all the cut-offs for changing the grade of the flour, thus using more or less bolting surface, or making more or less returns, as may be found necessary. It makes a quick and even discharge of flour from the flour spout, there are no hoppers or anything for the clogging of flour, and every customer gets his own flour from his own wheat. This is of great advantage, and if not pretty fully accomplished creates dissatisfaction with customers. The Bolts in connection with our Mills are of ample capacity when the grain is in proper condition to make good flour. They are made much larger and in more roomy chest than ever before. They are supplied with our improved percussion apparatus. This has now been in use in its present style for over ten years, with perfect success. It is composed of three sets of hinged arms, or knockers, three in each set, secured to every alternate rib of the reel inside, gently tapping the ribs on the downward or empty side of the reel, thus not forcing the flour through the cloth, but dusting out and unclogging it. These can be stopped or started by the miller at any time while the Bolt is in operation—either one set, two, or all, as circumstances may require. These, every practical miller knows, after having used them, to be indispensable to counteract the extremes of damp and dry, or cold and exceedingly warm weather. Some millers utterly condemn the use of knockers on bolts, and, in reference to those commonly in use, we will agree with them in this. The difficulty lies in the fact that commonly they are so arranged that the miller is obliged to use them at all times. In free bolting weather, he not only wants to stop the percussion apparatus, but also to have all the safeguards against too free bolting at his command. With this apparatus and proper grinding no clogging of the Bolt will ever be noticed. By the use of this apparatus we are enabled to use finer cloth than without it, and at all times bolt even and obtain better yields. This tried and valuable improvement has been secured by Letters-Patent.
These Mills and Bolts, or either of them separately are constantly being attached to old and new mills, warehouses and places where steam and water power can be had or used. We use on these Bolts Dufour & Co.’s celebrated Dutch Anchor brand of Bolting Cloth made up in best manner with 2½ inch strips of heavy ticking to come in contact with the ribs of reel.
Some parties erroneously entertain the idea that a portable mill is a temporary affair. They obtain this idea from the word portable. This word, applied to a mill, means only that the machinery is built in such a manner at the factory as to permit of its being shipped the same as any other machinery. Our portable mill has all the qualities for doing good work, and all the durability, that any old style mill has. It further has the advantage of enabling a man to put up his mill without near so much delay and expense as is required in the old style. In every instance where a portable mill has failed to do its work properly or to be durable, it has not been because it was a portable mill, but because it was not constructed on good well-tried principles, or of good material, or the fault may have been because it was not set up as it should be, or had not been properly managed after it was set up.
Our Mills and Bolts are fitted up and put together ready to run, before shipment, then properly arranged for shipping, and delivered on board the cars at the proper depot here, and a through rate of freight contracted in the shipping receipt.
COMPLETE PORTABLE GRINDING AND BOLTING FLOURING MILLS.
The cuts, Figs. 1, 2, 3 and 4, are intended to show the different arrangements in buildings and are made by us of the following sizes of stones: 30, 36 and 42 inches diameter of upper-runners, and 26, 30 and 36 inch of the under-runner kind, with the bolts described fully elsewhere, of ample capacity and to meet the special demands of a custom mill, capable of making flour that will bear inspection in any market, at the same time good yields, and are as economical in the use of power as any mill in the United States. Drawings and directions to set up sent with each mill when ordered. It betters the arrangement to place the husk frame 20 inches below the floor; the discharge spout and hoppers all come at a convenient height for the miller to see into the hopper and operate the mill without stooping. In Figs. 1 and 3 they are shown thus. We advise making a platform in the rear of the mills over the belts. The stones and bolt-chest can be placed on same floor, as Fig. 1, or the bolt above as the situation requires. They will grind and bolt from six to fifteen bushels per hour according to size, and can be put in operation in a short time, and are no more liable to get out of repair than the best mill in use.