US64091A - David l - Google Patents

Description

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IMPROVEMENT IN RIDDLES FOR SAND-WASHERS.

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TO ALL WHOM IT MAY GONCERN:

Be it known that I, DAVID L. FURNIER, of Rostraver, in the county ot' Westmoreland, and State of Pennsylvania, have invented a new and useful Improvement in Riddles for Sand-Washing; and I do hereby declare the following to be a full, clear, and exact description of the same, reference Abeing had to the accompanying drawings, in which- Figure l is' a plan of my riddle.

Figure 2 is a vertical sectional elevation of the same.

That others may understand my invention, I will particularly describe it.

A is the hed or frame which supports my riddle, and receives the sand and water as they pass through the same. In the centrall part of the bed A is the trough B, and at one end the discharge chute C. At each end is a pillow-block, D E, to support the bearings of the shaft F, upon which revolves the riddle. This last is composed of two hubs, G H, with radiating spokes, the blades I I, and the heads J K. Over the blades I is stretched a screen ot' wire cloth of' proper mesh, and around the inner side, secured also to. the inner edges of the blades, is another screen of similar wire cloth. A web, P, connects the spokes radiating from the hub H, nearly extending to their outer extremities, so that a. small space is left around said web, but between the two screens,over which gravel may pass to he discharged at the tail of the machine. The spokes from the hub I-I are very wide in the direction of thelength of the screen, and join the inner surface of the head K, and't'hus the compartments formed by the blades and the screens are continued over the web and down to the tail spout L, which encircles the opening through the head K and conducts all the sand and gravel which cannot pass through the outer screen into the discharge chute C. At the head of the machine is the hopper M, into which a stream of water constantly pours from some convenient reservoir, and'into which the foul sand is shovellcd. Also within the chutc M, and secured upon the shaft F, are the stirring arms N, which thoroughly disintegrate the earthy masses of sand, &c., as they come from the shovel and before they pass down into the interior of the riddle. Along the outer side of the, riddle, and secured to the edges of the blades, are the wings O, which dip into the trough to its bottom and keep in continual agitation the sand and water therein.

The operation of mymachine is very simple. It has been found impossible t0 clean sand from its earthy admixture except by constant agitation in running water, which will take up and hold in suspension the earthy particles and gradually carry them away over the tail. VWhen sand mixed with earthy matter is thrown'upon a screen upon which a stream of water is pouring, the action is confined to that portion of the screen upon which the water actually inipinges, and the remainder of screen surface is covered with an unmoving coating of wet sand. With my device thisis perfectly obviated, because the entire surface of the screen is passed through the water in thertrough B, at every revolution, and there can be no clogging. When the earthy sand is shovellefl into the chute or hopper M, it is broken up and disintegrated by the arms N N, and is washed down into the Y interior of the riddle, the-lower side of which is always immersed in water. As the riddle is revolved the earthy j particlesare gradually separated from the sand and become suspended in the water. All of the sand except 'I very coarse gravel will pass through the innermost screen, and that portion of the sand which is not above ther standard degree of coarseness will pass through the outer screen also into the trough. That portion which istoo coarse to pass through the meshes of the outer screen will, by the slightly inclined position of they riddle',

" and its constant revolution, be gradually moved to the tail end, and there discharged over the web and into'- the chute C. The trough is always full of water to a point above the edge of the chute C, so that there is aV constant overflow at that part into said chute, and as the riddle revolves the wings continually move the sandand earthy matter which have passed through both inner and outer screen, so that they are constantlyy exposed to the action of flowing water, and the earthy particles are very effectually taken up and removed, While the clean sand is little by little removed by the wings O, and thrown over the side of the bed A. The riddle may be caused to revolve by any convenient motive power.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is A hollow screen or riddle revolving on an axis, with one portion always immersed in a vessel through which a stream of water constantly flows, when Vsaid riddle receives the earthy sand into its interior at one end and discharges the coarser particles over a tail chute at the other end, as set forth and described.

t v 2 i In combination with aI hollow revolving riddle, constructed substantially as described, and revolving in a. watertrough B, the chute M and stirrers N N, for the purpose set forth.

In combination with a. hollow'revolving riddle, constructed substantially as described, the web P, and tail spout L, for the purpose set forth.

In combination with a, hollow revolving riddle, constructed substantially :is described, the wings O O upon its outer side to :tgitate and remove the sund from the trough, as set forth.

The combination of the hollow revolving and bed-frame A, provided with the trough B, and waste ohute, constructed and arranged as set forth and described.

DAVID L. FURNIER.. litnesses:

JN0. C. CUNNINGHAM,

DAVID WILSON.

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