US36202A - Improvement in coal-sifters - Google Patents

Description

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IMPROVEMENT IN COAL-SIFTERS.

Specification forming part of Letters Patent No. 36,202, dated August 19, 1862.

To LZZ whom, it may concern,.-

Be it known that I, CHARLES G.' AUSTIN, of Nantucket, in the county of Nantucket and State of Massachusetts, have invented a new and Improved Coal-Sifter; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification, in Which- Figure l represents a transverse vertical sec tion of my invention, taken in the plane indicated bythe line x x, Fig. 2. Fig. 2 is a longitudinal vertical section of this invention, the plane of section being indicated by the line y y, Fig. l.

Similarletters of reference in both views indicate corresponding parts.

This invention consists in the arrangement of a hinged flap attached by means of hinges to the cover of the barrel or ash-box, said cover being made to swing in a direction opposite to thatof the flap, and provided with guidegrooves in which the sieve moves, in combination with a suitable hopper or chute attached to the side of the ash-box in such a manner that by closing the flap and the lid the sieve is completely inclosed and the sifting can be effected without permitting any dust to annoy the operator, and by turning back said cover .the flap opens and rests with its edge on the hopper or chute, thus forming a guide for the good coals passing from the inverted sieve to the hopper, and through it to a coal-seattle or other suitable receptacle.

To enable those skilled in the art to make and use my invention, I will proceed to describe its construction and operation with reference to the drawings.

The sieve A is made square or inany other convenient shape, and itis provided with pins or cleats a, projecting from its sides and iitting into grooves b in the under side of the cover B. A rod, c, which projects beyond the end of the cover, and which isrigidly attached to the sieve, serves to impart to the latter a longitudinally-sliding motion.

The cover B is attached to the barrel or ashboX C by means of hinges d, so that'the same, together with the sieve, can be turned into a position shown in red outlines in Fig. 1 of the drawings. The cover is provided with a flap, D, which is secured to the same by means of hinges le, so that it opens in a direction opposite to that ofthe cover. This flap is provided with flanges f on its ends, catching over the ends of the cover, so that by closing the same the dust has no chance to escape from the interior of the box. By opening said Hap free access can be had to the sieve either for the purpose of introducing the coal and ashes at the beginning ofthe operation or to pick out the stones and clinkers after the sifting is cornpleted.

To one side ofthe ash-box C a chute or hop# per, E, is attached, which is intended to conduct vthe good coals remaining in the sieve to a suitable scuttle or receptacle that may' be placed under said hopper.

The operation is as follows: In order to introduce the coal and ashes to be sifted, the flap D is raised and the sieve is lled. The flap is now closed, and by imparting to thesieve a reciprocating motion in the guidegrooves b, continuing for a short time, the coal and ashes are separated, the ashes passing'through the sieve into the lower part of the lash-box, and

the coal and all coarse parts mixed with them remaining in the sieve. After the dust in the interior of the box has subsided the ap D is thrown open,thestones and clinkers are picked out and dropped into the box, the flap is closed again, and the cover is reversed to the position shown in red outlines in Fig. l of the drawings. If the flap is now released, it drops down upon the edge of the hopper and forms a chute, conducting the coal from the sitter to the hopper, and through it to the scuttle or reservoir that may be placed under it. By these means the coals can be deposited in the scuttle with; out removing the sieve, and by turning the cover back the sifter is ready for a fresh charge.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

The arrangement ofthe Hap D, hinged to the coverB, as described, in combination with the reciprocating sieve A and hopper E, all constructed and operating substantially as specified.

CHARLES G. AUSTIN.

Witnesses:

FRANCIS B. SMITH, J AMES AUsTIN.

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