US1137526A - Screening apparatus. - Google Patents

Description

1.1. PHILLIPS.

SCREENING APPARATUS.

APPLICATION FILED APELZ4, 1914.

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W/DVESSES &

JAMES JASPER PHILLIPS, OF BROOKHAVEN, MISSISSIPP SCREENING APPARATUS.

Specification of Letters Patent.

Patented Apr. 27, 1915.

Application filed April 24, 1914. Serial No. 834,142.

To (/U 117mm. it may concern Be it known that 1. James J. PHILLIPS, a citizen of the United States. and a. resident of Brookhaven. inthe county of Lincoln and State of Mississippi. have invented a new and Improved Screening Apparatus. of which the. following is a full. clear. and exactdescription.

The object of the invention is to provide a new and improved screening apparatus, more especially designed for screening clay and like material and arranged to separate the finer particlrs from the coarser ones and deliver the ame to different chutes so that the finer particles pass directly to the briclv'malv'ing machine while the coarser particles pass to the dry pan to be treated further.

In order to accomplish the desired result use is made of an inclined screen provided with a bottom. a screening plate located a distance from the said bottom to form a -chute under the screening plate for receiving the fine particles that pass through the screening plate. and an adju table heater located directly under the said screening plate to heat the material passing over the screening plate and also the line material passing through the screening plate.

practical embodiment oi the invention is epresented in the. accompanying drawings forming a part of this specification. in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a plan view of the screening apparatus: Fig. 2 is a plan view oi; .the heater in the screen; Fig. 3 is a cross section of the screen and heater. the section being on the line 'Z Z of Fig. 1; Fig. it is a sectional side elevation ct the screening apparatus; Fig. 5 is a cross section of the delivery chute. the section being on the line of Fig. 4.: Fig. (i is a. similar view of the same on the line 66 of Fig. 4: and Fig. 7 is an enlarged cross sect on of partof the screen and heater.

The clay or other material to e treated is elevated by a suitable bucket elevator A.

and finally discharged onto an inclined dclivery chute B which in turn discharges onto an inclined screen C, the lower end ot' which connects with two receiving chutes l) and E. of which the chute D rei'civcs the tine screened material from the screen C and delivers it to a bricki'naking machine, while the coarser non-screened material passes into the chute E and is delivered by the latter to a dry pan for further treatment.

The delivery chute B is provided between its ends with a clod breaker F in the form of iron bars extending transversely from one side of the chute B' to the other side thereof. the lower edge of the clod breaker F being a distance from the bottom of the chute B so that the finer material delivered by the elevator A into the chuteB.ca1 r readily pass down the same under the clcd breaker F while the lumps strike the clod breaker F and are broken up into small pieces to pass down the delivery chute B. The lower end of the delivery chute B is provided with a vertically disposed screen (i to break up the material as much as possible. the screen being prctcrably pivoted at. its upper end s as t swing op n to allow all the material to pass out of the delivery chute B onto the upper end of the screen C.

The screen 0 is provided with a screen frame having sides C, a bottom and ledges C" a distance above the bottom and extending along the sides I oi the screen frame. The ledges U support a screening plate ll of a suitable mesh' so that the material delivered by the chute B onto the. screen ing plate H is separated so that the liner particles pass through the perforations ot the screening plate H onto the bottom C to finally reach the chute D. while the larger particles pass down the screening plate H and finally re ch the chute E.

In order to reduce the material in its passa down the screening plate H use is made o'l heat supplied by a heater 1 in the form oi a coil of steam pipes extending under the screening plate H and supported from the same by cross bars J and bolts J attached to the screening plate H. as plainly indicated in Figs. 3 and T. heater T from the screening plate H by means of the bars .l and bolts J. the heater can be adjusted closer to or farther from the screening plate to increase or decrease the heat accori'ling to the nature of the clay being treated. hie end of the steam pipe coil is connected with a boiler or other suitable source ol' steam supply. and the other end is connected with a steam trap I or similar device. The ends of each return bend of the steam pipe coil is provided with a lrain cock I tondischarging any water of condensation that may accumulate in the coil.

By supporting the In order to retard the material in its downward course over the screening plate H use is made of retarding means K, preferably in the form of aprons made of canvas or other-suitable material, and attached to cross oars C extending between the sides C at the upper edges thereof, as plainly indicated in Fig. 4-. The .aprons K hang downward so that their free ends overlie the upper surface of the screening plate H to cause the material to pass under the said aprons K and thus cause the same to be retarded with a view to insure propel-screening of the material. .1 It is understood that the screenin 1 plate H has to be quite hot in order that t 1e clay will readily break up into small particles to readily siftitlirough the perforations in the screening plate H to passdown the bottom C into the chute l) and to the brickmaking machine. The coarser materials that do. not pass through the perforations in the screening plate H pass down into v ture and be well pulverized, and as d r the chute E and finally into a dry pan to be reground. in order to make a first class face brick the clay must have a certain percentage of mois rent clays contain different amounts of moisture the heat must be varied according to the clays under treatment, in order that only the. requisite amount of moisture Wlll be rc-' moved to permit it to be properly pulver ized. By the use of the adyustablc heater I .-the surplus moisture in the clay is evapo- It is further understood that rated and thus allows the use of a very fine mesh screen at the same time permitting the screening'of a large quantity of clay in a, comparatively short time, Itwill also he' noticed that by the use of the heater I the clay'is not liable to adhere to the screen especially in damp Weather. 7

Having thus described my invention, I claim as new and desire to secure byLetters Patent:

1. A clay screen, comprising a metal plate apertured to form a screen, a coil of longi tudinally extending steam pipes on the un' derside of the screening plate, transverse.

bars upon which the coil rests, and bolts passing through the said plate and bars and provided with nuts on their loweriends,

2. In a clay screen, an inclined frame having longitudinally extending ledges on the inner faces of its sides, said ledges gradually increasing in distance from the bottom" of the frame from the upper to the lower end of the frame, a metal plate apertured to form a screen and resting upon the ledges, a steam coil below the plate, means for supporting the coil from said plate, and vertical chutes arranged side by side at the lower end of the frame.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JiiMES JASPER- PHILLIPS. Witnesses:

Moxie SIMON,

ELLA S'rnmonn.

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