US20290A - Improvement in chasing-mills - Google Patents

Description

C. MOORE.

Ore Mill.

Patented May 18, 1858.

M PEYERs. Photo-Litho raph". Wnhingmn. D. c.

UNITED STATES PATENT OFFICE.

CHARLES MOORE, OF TRENTON, NE\V JERSEY.

IMPROVEMENT IN CHASING-MILLS.

T0 (0Z6 whom it may con/corn.-

Be it known that I, CHARLES Moons, of Trenton, in the county of Mercer and State of New Jersey, have invented certain new and useful Improvements in Chasing-Mills for Grinding Reeds and other Articles and I do hereby declare that the same are described and represented in the following specifications and drawings.

To enable others skilled in the art to make and use'my improvements, I will proceed to describe their construction and operation, referring to the drawings, in which the same letters indicate like parts in each of the figures.

Figure 1 is a top view of a chasing-mill with myimpro'vements. Fig. 2 is an elevation of the same. Fig. 3 is a section through the line z of Fig. 1. Fig. l is a plan of the bottom of the bed.

4 The nature of my improvements consist, first, in making a chasing-mill self-feeding automatically and continuously by means of one or more circular troughs which receive the substances to be ground or acted upon and deliver them through spouts on to the bed of the mill under the chasing-wheels; second, in a revolving scraper so constructed, arranged, and operated as to separate automatically and continuously that portion of the material on the bed of the mill which is ground most from that which is ground less and deliver it into the discharge-opening in the bed of the mill, and, lastly,in comblning with the above-mentioned automatic continuous self-feeding and self-discharging apparatus a heated bed, so as to heat, grind, mull, and mix the materials fed to the mill automatically at the same time and in one operation without manual labor.

In the aceompanyin g drawings, A is the bed of the mill, made of cast iron, and consists of a circular plate or bottom 15, Fig. 4-, which should rest on a solid foundation A of some kind of sul'ficient strength. to support the mill. Thisbottonl I has a holein the center, surrounded by the hub G, from which a series of partitions I) I) radiate, extending nearly to the edge except I), which extends to the edge, and there are also a series of partitions D extending from the edge nearly to the hub 0, arranged alternately between the partitions D I), all of which partitions support the bed A, which rests upon them, and is provided with a hole in the center corresponding with the hub C, and that portion of it which the chasing-wheels E E roll upon is provided with V-shaped scores F F, about one-fourth of an inch deep and three-eighths wide at the end toward the center and threefourths of an inch wide at the outer end. These scores F F are curved, and cross each other nearly at right angles and form pyramidal shaped protuberances between themselves which may be brought to a point or nearly to a point, which protuberances are designed to prevent the substances acted upon by the mill from slipping forward under the wheels, so as to escape without being properly acted upon and ground or mulled.

The bed A and bottom 13 are surrounded by a hoop G, so arranged as to cover the ends of the partitions D and form a steam-tight joint around the bed and bottom, and make a chamber which is supplied with steam throughthe hole II in the bottom, and after passing around between the partitions D and D and heating the bed A uniformly it escapes through the hole ll. on the opposite side of the partition D. The hoop G or a similar one should be made to extend a sufficient distance above the bed A to form a curb G to prevent the substance ground from falling 011' the plate as it is swept around by the sweep I, which sweeps orscrapes it into the opening J, through which it falls into the receptacle prepared to receive it. The opening J is made through the bed and bottom, and separated from the steamchamber by the partition J, and is provided with a door J to close it. The bedAand bottom B may be cast separately and fitted together, and rims may be cast upon them to answer instead of the hoops above mentioned,

which rims may be provided with flanges, so as to bolt them together and make a steam-tight joint; but I have succeeded in making them by casting the bed, partitions, and bottom all in one piece, and shrinking on a stout wrought iron hoop wide enough to cover the space between the bed and bottom and lap onto each, so that the seams can be calked to make a steam-tight joint.

To make the curb I take a strip of stout sheet-iron, long enough to reach around the bed, and rivet some hasps to each end on the outside, so that when it is applied to the bed a tapering key can be driven into the hasps, which will draw it so tight around the bed as to fix it firmly in its place without additional fastening. The vertical shaft K should .be provided with a pivot at the lower end, fitted to turn in a box in or below the hub O, and the upper end of this shaft should befitted to turn in a box supported by a girder of the building in which it is operated or by strong frame-Work adapted to the purpose, and a gear wheel or pulley should be applied to this shaft at or near the upper end, to which the power may be applied to turn it and operate the mill. The axle K passes through the shaft K, so as to allow the chasing-wheels E E to accommodate themselves to the thickness of the materialbein g ground under them on the bed A. The chasing wheels E E turn on the pivots L L of the axle K, and one arm of the axle is longer than the other, so that one wheel will not run exactlyin the track of the other. These chasing-wheels may be made of sand or grit stone, bushed with wood or metal, so as to turn freely on the'pivots L L as the shaft K is turned to roll them around on the plate or bed Ato perform the grinding.

In order to feed the mill continuously and automatically, I make a circular trough N' around the shaft K, into whi'chthe crushed linseed is fed by a trough to'supplythe mill, and it passes'down through the spout 0 into the bed A, so as to feed the mill constantly and uniformly, and it is forced out under the chasing-mill. These troughs N and R may be arranged at such distances from the shaft as may be desirable, and the bottoms of these circular troughs may be made to rise spirally I in one or both directions from the opening into the spout, so as to deliver the crushed seed uniformly around the bed of the mill. The rods T T are arranged so that they can be traversed in the shaft K to adjust the sweep or scraperl, which is fastened to them, which scraper may be set so as to separate that portion of the prepared pulp which is ground most and worked out by the wheels from that which is ground less at each revolution, and the portion so separated is swept around by the outer arm of the scraper and falls into the opening J mulled, heated, and more perfectly prepared'for the press than it has ever-been done by any other mill or'process. The rear end of the scraper I is set in toward the shaft, so as to scrape the pulp which is'not separated asabove mentioned in toward the center, so that the wheels will pass over itagain.

It is found to be a great advantage to mull and temper the crushed seed on a hot plate and supply water at the same time, as the heat promotes the chemical affinity between the water and the starchy portion of the seed, thereby precipitating or releasing more of the oil than'any other method. Besides, the oil is far more easily expressed from the pulp than when it is prepared in any other way.

By making themill automatically self-feeding and automatically self-delivering, the labor of filling and-discharging the millby hand is saved,and the pulp is more uniformly and far better prepared and delivered all ready for the press or for packing, and one mans labor is saved entirely who has heretofore been employed. to put in and take outfthe pulp, supply the water, the. By making the mill to feed and discharge itself continuously,

enumerated as follows: First,'it is heated'al-l over'witha uniform temperature; secondly,

there is no danger of its being heated so'liot 'asto scorch or burn the pulp or dry it by evaporating all the water that is "put in with it to moisten the starch ;'thirdly, theh'eatiiig is done entirely without manual labor, consequently is not attended with anyfadditional expense; fourt'nly, the mill is not delayed-by stopping to remove the crushed seed, as 'in the old method; -fifthly, the crushed seed is supplied uniformly under the wheels, so that they act upon it to advantage, besides they turn easier than if the crushed seed were spread by hand under them with less uniformity than when it is spread automatically.

\Vith my improvements the millinay'run constantly without interruption or delay, and do a far greater amount of work and do it far better, and at the same time dispense with one'mans labor.

I'believel have described and represented the improvements which I have-made in chasing-mills so a'sto enable any person skilled in the art to make and use them. I willnow state What I desire to secure by Letters Patcut, to wit:

rial on the bed of the mill which is "ground most automatically and continuously'from that'which is ground less and'deliverit to the discharge-opening in the bed of the mill, to the mill automatically or without manual substantially as described.

In combination with a continuous automatic self-feeding apparatus or a continuous automatic self-delivering apparatus applied \Vitnesses: to a chasing-mill, a heated bed, so as to heat. grind, mull, and mix the materials supplied labor at one and the same time, as described.

CHARLES MOORE.

SMITH L. SOUDDER, WM. 0. HOWELL.

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