US589929A - Wilitelm bunge - Google Patents

Description

(No Model.)

W. BUNGE.y

SIFTING MACHINE. No. 589,929. Patented Sept. 14,1897.

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SIFTINGEVIACHINE.

SPECIFICATION forming part of Letters Patent 180.589,929, dated, September 14, 1897.

Application filed March 10, 1894. Serial No. 503,206. (No m land March 1, 1894, No. 4,338; in Switzerland March 1, 1 gium March 6, 1894, No. 108,854; in Hungary May 30, Austria August 1l, 1894, No. 3,990.

To all whom it' may concern:

Beit known that I, XVILHELM BUNGE, of Lubeck, in the Kingdom of Prussia and Empire of Germany, have invented Va new and useful Improvement in Sitting-Machines, (for which I have obtained a patent in Germany, No. 77,588, dated July 21, 1893; in Great Britain, No. 4,33S,dated March 1, 1894; in Switzerland,No. 8,321, dated March 1,1894; in France, 180.236,797, dated Marclr, 1894; inlelgium, No. 108,854, dated March (i, 1894; in Hungary, No. 519, dated May 30, 1894; ,in Canada, No. 46,733, dated August 4, 1894, and in Austria, No. 3, 990,dated August 11,1894,) of which the following is a specification, reference being had to the accompanying drawing, which forms a part of this specification.

The object of my invention is to provide a horizontal siftingmachine vemployin g a number of sieves which may be easily taken apart from one another for the purpose of cleaning or for varying the size or shape of the sieves or for reducing the number employed, according to the goods to be sifted.4

A further object of my invention is to obtain a spiral sifting motion of the machine, such as is obtained when. sifting is done by hand, this motion being partie ularlyefi'ective in sifting processes. I attain these objects by the mechanism hereinafter described with reference to the accompanying drawing and pointed out in the claim.

The said drawing is a vertical section of my machine. i

A, B, and C represent a number of sieves secured together to form a horizontal siftingmachine. Each sieve is separate from the others and is composed of the outer ring o,

9 and the smaller inner rin-g a'. The rings a and a. carry the sifting-cloth, which may be of any material or mesh desired.t The ring a hasattached to it by any suitable means (not shown) a projecting ring 0, on which is loosely tted the ring 7c, of angle-iron, carrying the brush It. By this arrangement as the machine is turned in a spiral direction the brushes are thrown around on the ring o and in this manner clean the sifting-cloth.

To the bottom of each sieve is secured a odehl Patented in Germany Tuly 21, 1893, No. 77,588; in Eng- 894, No. 8,321; `in France March 6, 1894,1To. 236,797; in Bel- 1894, No. 519,' in Canada August 4,1894, No. 46,733, and in circular cone-shaped plate e, provided with a central opening and with an opening at its outer periphery to allow the particles which pass through the cloth to fall onto the sieve below it. `.As will be seen from the drawing, the heavy particles from the iirst sieve pass through the central opening and into the chute to be conveyed away, while the Jiner particles pass through the sieve onto the coneshaped plate beneath it, which guides them onto the next sieve. The next plate in turn may be provided with a chute, as e', for conveying the nner particles from its sieve into a chute e2, while the coarser particles escape through the central opening of its plate onto lthe next sieve. The cone-plate of this sieve may be provided with a chute e4 for conveying away the ner particles, while the -coarser particles escape through a central opening onto the next sieve. This construc- ,i tion is provided on each of the sieves, with the exception of the iirst, which is preferably of the form shown. After the material has passed through the series of sieves that portionof it remaining on the last sieve escapes through the chute e3.

At the top of the machineA and surmounting the sieves I locate a cone-shaped plate c5, onwhich the material falls from the chute d. This plate as the machine is operated scattersthe material to its outer edge, where it passes onto the first sieve. It then passes through the several sieves, as above described, its course being indicated by the arrows.

The several sieves are secured on each other with a suitable packing between them and are securely held by the clamp c, which is carried by a rod mounted on the base of themachine. The base may be of any desired construction and it has connected with it the means by which the device is suspended.

g represents a number of rods (four being used) which are connected at one end to an overhead support and at their other ends.` to the machine. This desirable movement is obtained by the following means: t' represents a short shaft rigidly secured at one end tothe machine and at its other end eccentrically to the crank h.

Thus it will be IOO seen that as the device is rotated it Will not be in ahorizontal plane, but in avarying one, this being aided by reason of the mounting of the machine by the rods g and the eccentric connection With the crank.

The operation of my machine is as follows: The machine is set in motion and the material to be sifted fed to it through the chute d. It is then guided to the outer edge of the first cone-shaped plate and then onto the first sieve. The finer particles pass through the sieve onto the cone-shaped plate beneath it, which either conveys it to a chute or onto the next sieve, While the coa-rser particles either escape into a chute or onto the next sieve, as the case may be. This is kept up until the material has passed through the entire machine and has been separated into various grades.

Having thus described my invention, the following is what I claim as new therein and desire to secure by Letters Patent:

In combination, a series of sieves, having inner rings, the flanges o secured to the outer side of said inner rings, the brushes and the rings 7a forming a part of the brushsupport and loosely held on the rings o to have lateral movement, the said brushes bearing on the under sides of the sieves, and means for giving the sieve a gyrating movement about a ixed axis, substantially as described.

In Witness whereof I have hereunto set my hand in presence of two witnesses.

WILHELM BUNGE.

Witnesses: v

FERD SCHREIBER, CHR. KAHL.

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