US1259788A - Magnetic separator. - Google Patents

Description

Le. SEKINGER.

MAGNETIC SEPARAIOR. APPLICATION FILED JULY 21. 1915.

1,259,788.- PatehtedMar. 19,191&

WITNESS:

. UNITED STATES PATENT oFFIoE.

JOHN Gr. SEKINGER, OF FORD CITY, PENNSYLVANIA, ASSIGNOR TO THE PITTSBURGH PLATE GLASS COMPANY, OF PITTSBURGH,- PENNSYLVANIA, A CORPORATIONDF PENNSYLVANIA.

MAGNETIC SEPARA'IOR.

Specification of Letters Patent.

Patented Mar. 19, 1918.

Application filed July 21, 1915 Serial No. 41;030.

to remove particles of iron, steel and the like. The invention has for its objects, the provision of a separator which shall be more effective in removing the iron and steel from the cullet or batch than those heretofore employed; the provision of a separator, of cheap simple construction which can be applied to the end of any discharge chute; and the provision of a separator from which the iron collected can be easily and conveniently removed' One embodiment of the invention is'illustrated in the accompanying drawings, wherein- Figure 1 is a side elevation of the appa-r 'ratus constituting my improvement with a 1 :portion thereof in cross section, and Flg. 2

' is a plan view of the lower .end of the casing' containing the electric winding with such winding and the cover plate removed. Referring to the drawings, 1 is the lower portion of a hopper to whichthe crushed cullet is. supplied; 2 is ,an inclinedspoutor 35' I hing preferably of cast iron containing the chute leading from the hoppergfi is ,a caswinding-eg' :5 is a diagrammaticshowing of,

a generfator for supplying-current to the winding; and- 6 isna conveying bucket by .means of which ,e'nlletfed through the spout and magnetic separator is carried te'the furnace where it is-used...

The opening ,7 through'jth casing '3 is preferably rectangular'in cross section asindicated in Fig. 2, and of less-cross sectional area than the spout 2, the purpose bein'g't'o retard the passage of the crushedcullet and to bring the. material into close proximity with the sides of the casing, thus giving a better opportunity for the application of the magnetic cleaning force. The upper side of the trough 2; is open, as will be seen by reference to Fig. 1, so that the flow of materialcan be facilitated in case of bridging or choking by means of an implement inserted from the upper side. This arrangement also permits of the use of a loosev plate as a gate for controlling or stopping the flow of cullet, such plate being inserted upon the upper side of the casing 3. It is advantageous to make the spout 2.

inclined as illustrated, since this permits the crane carrying the bucket or conveyer 6 to move such conveyer to and from the position illustrated without interference with the chute or separator.

The casing 3 is preferably a casting which is provided with the groove shown in Fig. 1 extending inwardly from its front side. This groove serves to divide the casing into two annular pole pieces 8 and 9 the space between being filled with the winding 4 with the turns thereof extending circumferen- Y tially of the opening 7. In order td protect "the winding acover plate 10, preferably of brass or similar non-magnetic material, is securedover the front end of the casing.

'In operation, current is supplied to [the winding 4 as the crushed cullet flows! out through the opening 7, thus energizing the pole pieces 8 and 9. I The iron and steel particles which happen to be in the cullet are brought relatively close to the pole piece 8 in their passage through the narrow elongated opening 7 and either adhere to the inner surface of the pole pieces or else are attracted to the lower, end thereof as they emerge from the opening 7. The particles which adhere to the inner surface of the pole'piece are shoved along by the flowing material and eventually come to'rest on the lower surface of the cover plate 10. As the altitraction is strongest at the lower ends of t e finally collect in masses as indicated at 11 and'12. After the bucket 6 is removed and the current to the winding cut off, the ma? terial on gthe front face of'the cover plate immediately'drops off or can'be scraped off wlthout difiiculty while another bucket is be ng brought into position. I have found that this apparatus very thoroughly cleans the cullet, requires little attention, and is not liable to get out of order.

What I claim is:

1. The combination with an inclined dischargespout, of a casing of magnetic ma.- terial having an opening therethrough conole pieces, the iron and steel particles stituting the outlet end of the spout and having its sides substantially parallel to the axis of the spout, and having axdownwardly opening groove surrounding the said opening and dividing the inner and outer parts of the casing into pole pieces, and a winding in said groove with the turns thereof extending clrcumferentially of a the said opening, the lower face of the casing being at substantially right angles to theaxis of the winding and adapted to receive and support the magnetic material which passes through the casing.

2. The combination with an' inclined dis-. charge spout open on its upper side, of a casing of magnetic material mounted on the end of the spout and having an opening therethrough in alinement with that of the spout but of less area in cross section, the said casing being provided with a 'downwardly opening groove surrounding the said opening and dividing the casing into two annular pole pieces, and a winding in the groove with its turns extending circumferentially of the said opening.

JOHN G. SEKINGER.

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