US59481A - Improved mode of washing sand - Google Patents

Description

TODD & DOWNER.

Mode of Washing Sand. No 59,481. Patented Nov. 6, 1866.

UNITED STATES PATENT OFFICE.

JAMES TODD AND ALBERT G. DOWNEB, OF FAYETTE, PENNSYLVANIA.

IMPROVED MODE OF WASHING SAND.

Specification forming part of Letters Patent No. 59,481, dated November 6, 1866.

To all whom it may concern:

Be it known that we, JAMES TODD and AL- BERT G. DOWNER, of Fayette city, in the county of Fayette and State of Pennsylvania, have invented a new and useful Machine for Washing Sand from which window and other glass is manufactured; and we do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawing, making a part of this specification, showing a transversal vertical section, a plan view and a perspective view, and the letters and figures marked thereon. The machine is known as the elevator sandwash, and is constructed as follows, viz: a frame-work of any desirable size to confine the working portion of the machinesay about four feet high and six to eight feet long. The working portions of the machine consist of riddle, spouts, troughs, boxes for elevators to work in, elevators, gum or chain straps or belting, pulleys, drums, and shaft.

In the first place, water must necessarily be used to work the sand through the riddle and to separate it from all gravel.

The riddle is placed directly over spout No. 1, through which the sand is forced into the elevator-box A, (shown in section and plane thence the sand is brought up by the elevator, passing through box A, and is dropped into a trough (marked D on the drawing) placed immediately in front of the elevator boxes and below the shaft. In front of that trough D, and standing one foot higher, is trough E, which is intended to be kept full of clear water.

In trough E are two small gates, G and H, placed somewhat to the left of the mouths of elevator-boxes A and B. By raising the first gate, G, opposite the mouth of elevatorbox A, the water, in flowing from E into trough D, forces or washes the sand down spout No. 2 into the lower part of the elevator-box B, whence the sand is lifted again by the elevator in B, and dropped a second time into trough D, separated from that of A by a partition, to

prevent contact with the more muddy sand of mouth of the elevator-box B, makes the water 7 flow down from E into D, and thence wash the sand down spout No.3 into elevator-box O, and thence is carried up by the elevator in O and poured out clear and free of all loam or dirt.

Trough F, at the back part of the machine is divided off by partitions, and the outside board provided with notches I in such a way that each set of elevators discharges its muddy water through notch I belonging to that set, the lower line of which notches defines the level of the muddy water to about one-third of the height of the incline of the. elevator, as every drop above that will fiow through said notches according to the law of gravity.

By this arrangement, and by leaving the top and one side (showing in the direction of the movement of the elevators) open, (which elevators are in all other machines of the kind on but one side open,) and allowing between the elevators and the elevator-box side and bot-' tom walls nearly one-quarter of an inch space, the water can easily escape down the elevatorboxes, carrying the dirt along through the notches I, .but still leaving the sand, as more compact, in the elevators.

It is obvious hereby that as the muddy water is lifted to only about one-third of the height, less than one-half the power is neededwhich any other machine for the same purpose requires, and that there is at D always clear water. In fact, a one-horse power will be sufficient to wash forty tons of sand a day.

In each elevator-box is a pulley, which is placed about one foot from the end of the box, and high enough from the bottom of the box to let the elevators pass round and nearly touch the bottom.

The drums of the shaft may be made of any size sufficient to bring up the sand by the elevator. The elevator-boxes should be made of hard wood, and the elevators of steel or heavy sheet-iron, and should be six inches long and not more than four inches deep.

Riddle, spouts, and troughs we disclaim,

and drums, and the manner in which each box discharges the muddy Water from the sand.

Signed and witnessed this 4th day of May, 1866.

JAMES TODD. A. G. DOWNER.

Witnesses:

B. B. TODD, J AMES W. EBERHART.

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