US1384313A - Feed-regulator for screening and other apparatus - Google Patents

Description

G. H. FRASER. FEED REGULATOR FOR SCREENING AND OTHER APPARATUS. APPLICATION FILEDJUNEII.19I5

1,384,31 3. Patented July 12, 1921..

3 SHEETS-SHEET I.

INVE NTOR WITNESSES: I w; 7% A Mm. MAZM G. H. FRASER.

FEED REGULATOR FOR SCREENING AND OTHER APPARATUS.

APPLICATION FILED JUNE HI 1915. 1,384,313. Patented July 12, 1921.

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G. H. FRASER.

FEED REGULATOR FOR SCREENING AND OTHER APPARATUS. APPLICATION man JUNE 11. 1915.

1,384,.3 1 3, Patented July 12, 1921.

3 SHEETS-SHEET 3.

2 r* INVENTOR WITNESSES:

,4 m Aim/M UNITED, STATES PATE T F E GEORGE HoL'rrnAsER, or' RooKLYN, new YORK.

FEED-REGULATOR FOR SCREENING AND OTHER APPARATUS.

Specification of Letters Patent.

"Patented July 12, 1921.

Original application filed December 31, 1907, Serial No. 408,772." Divided and this application filed June T 0 all 10 710m it may co nce m Be it known that I,'GEORGE HOLT FnAsnR, a citizen of the United States, residing in the borough of Brooklyn, county of Kings, city and State of New York, have invented certain new and useful Improvements in Feed-Regulators for Screening and Other Apparatus, of which the following is a specification, being a division of my application filed December 81, 1907, Serial No. 408,772.

This invention relates to feeders for apparatus for screening and the like and aims to provide certain improvements therein especially applicable to inclined screens.

To this end the invention provides certain improvements in construction which will be hereinafter more fully set forth with reference to the accompanying drawings, in which Figure 1 is a side elevation of the preferred form of my improved feeder as applied to a screen;

Fig. 2 is a rear elevation thereof partly broken away to show sections on different planes, and

Fig. 3 is a vertical cross-section cut on the line 33 in Fig. 2.

Referring to the drawings, A is the main frame or casing as a whole, B are the screen members therein, C is the feed hopper, D is the coarse outlet, E is the fine outlet, F is the drive pulley and G are the vibrators.

According to the preferred embodiment of my invention, the casing is a tubular member hinged at a to feet Z), and adjustably connected at c to legs d so that it can be tilted to vary the inclination of the screen. It is preferably made entirely of metal, and in its preferred form consists of cast iron pieces 6 which are united by braces f, g, 72. and i,the top of the casing being inclosed by removable hinged doors y, and the back by a hingedbottom 7c, the front being closed by a vertically sliding door Z, and the bottom being open for the outlets D and E. The upper part of the casing is formed with front and rear doors m which. inclose the distributing conveyer, and with a reversible top plate a, which, with the hopper C, can be removed and placed so as to locatethe hopper at either side of themachine.

The side pieces c are preferably formed with a lower body portion 0 and an upper head portion p with an intermediate flange Serial No. 33,465.

,and with hearing supports 1", all in one integral casting. The body portion 0 has a lower edge 8 of greater angularity than its upper edge, and against which the back or bottom closes. The upper edge has a flange 23 against which the top covers j set to close the top of the body, which flange has notches or recesses 24 u to receive corresponding projections 01 e on the covers, so that the latter will not slip down in case either end is raised.

On its inner face each side is provided with a shoulder or flange H against which the screen member rests and by which the latter is arrested in its upward movement, which shoulder is preferably a part of the casting. V

Preferably internal flanges w are provided on the head 39 for supporting cross angles 50, which, with a plate y resting on them constitute the trough for the distributing conveyer I. Adjustable or tilting feed bars, edges or. plates J are fastened on the front and rear sides of this trough, and are tilted to the angle necessary" to cause the conveyor to feed material from the trough over the edge of the plates in an approximately uniform stream from end to end, according to which direction the conveyer is driven. The feed plates have out-bent ears 2 which are engaged by adjusting bolts or suspension members a which extend above or without the casing for supporting and for adjusting the angularity of the plates. "While, of course, various suitable means may be employed for adjustably fastening the feed edges J to the trough, I have shown bolts 2 on the crossangles m, extending through slots 2 in the feed plates J, and wing nuts .2 applied to the outer end of the bolts 2% The conveyer has a driving shaft K, on one end of which is mounted the drive pulley F, and on the other end of which is a crankb" or other provision for operating the agitating mechanism for thescreen.

The hopper C has flanges 0 depending at each side of the conveyer to prevent material from shooting upwardly before it falls into the trough, and it has a transverse flange (Z on which the top a is fastened.

Beneath the conveyor is a deflector'plate L extending from the back downwardly over the screen member,and opposite this is a reverse inclined feed plate M extending from the front rearwardly, beneath, the

screen. These plates are spaced apart from the conveyerv trough to afford passages or conduits for conducting material forwardly or rearwardly thereunder to the outlet aperture N. Above these plates is a deflecting:

flange O which prevents the plates from rising, and deflects toward the center any material-falling closeto thewall. Stops e are provided for limiting the downward movement of these plates. Each plate can he slid upwardly and outwardly through the adjacent door m. g

The bearings for the shafts are preferably semi-spherical bearings 'Q, insuring alinement independently of any skewing of the frame, and permitting sufl'icient rocking of any shaft to enable it to be canted sulficiently to remove it without, taking apart the-frame when the shaft has been slid endwi'se in the bearing enough to freeit from the opposite bearing. These bearings are made by casting or forming 011 the side pieces 6 the brackets o which have a cylindrical bore 21 in which fits a spherical por tion 7'" on the bearing, so that the latter can, rock in any direction. Each bearing is formed with an oil cup is" having projecting ears Z which are cottered or otherwise fastened to a rib m on the bracket 1', thus preventing the bearings from falling out. Oil covers a are likewise fastened to these ears.

In operating, with the construction'shown,

the hopper C is placed at whichever side of the machine it is desired to feed the material, and the conveyer I is revolved inwhichever direction is necessary to pushthe material from the hopper toward the other end of the machine. The bottom y of the trough is shorter than the length of the conveyer, and is moved from one end to the other of the trough in order to leave the bottom outlet opening 0 at the end of the trough remote from the feed hopper, so that any material not thrust over the feed edges may fall through this end. The front and rear feed plates are tilted until the material flows across one or the other in a uniform film from end to end. 1

When material is fed to the hopper, the

conveyer will then distribute it evenly onto either the rear feedplate L or the front feed plate M, according to the direction of rotation of the conveyer. If the feed falls onto the rear plate L, it will flow forwardly down the latter and onto the screen close to the screen surface. If it falls onto the screen plate it will flow backwardly down the latter, under the conveyer trough, and be discharged onto the other plate L, down which it will flowonto the screen. The feed plate L rests onthe screen member and is a normal inclination of 45 degrees as much as desired. a V,

lVhen theseadjustm'ents have beenproperly made the material will fiowdown in'a wide thin stream under the conveyer" and onto the screen surface in a thin film, and the agitation will prevent clogging of the interstices, and will facilitate the flow of the coarse particles down over the screen and discharge of the fines through the screen. Thefines falling through the screen will flow down the steeper inclined bottom is to the fine outlet E, the greater inclination of this bottom insuring a gravity flow even when the adjustment is such that the screen memberi too flat for a gravity flow without vibration. 7

Operation of the distributing conveyer may be observed through either the front or rear doors, and the knockers and screen 'action may be observed through the top door j. The screen frames may be removed by sliding them backwardly out through the back door 9" or forwardly through the front door Z after their clamping screws r and clamping plates 8 have beenremoved, or access to their rear may be had by turn ing down the bottom door is, or they may be released from their spring supports and turned down on the bottom door and taken out and replaced while in this position.

If the material being screened is damp, it may be ventilated or driedby tilting up the lower edge of one top door and'opening the back door thus affording ventilating conduit or passage beneath the feed plates for permitting a current of air to flow backwardly through "the casing downwardly through the screen and outwardly at rear. A piece of'screen 6 may be placed inside of the door g" .to prevent dust floating out during such ventilation. V V

For dry feeding. the apparatus may be used as shown, and for wet feeding it may be immersed in water. V i

It will be seen that the legs can be folded against the body, and that the apparatus can be easily taken apart for packing in knock-down shape, and assembled for use; also that the driving pulley and agitating mechanism can be placed at either side by simply removing the shafts and their corinections, and reversing their positions before again assembling them.

It will be seen that this invention provides means which can be readily and advantageously availed of, audit will be understood that the invention is not limited to the particular details of arrangement, construction or combination set forth as constituting its preferred form, since the improvements can be employed in whole or in part according to such modifications or adaptations as the judgment of those skilled in the art may dictate, without departing from the spirit of the invention.

I claim as my invention:

1. In combination, a casing affording an elongated distributing chamber, a trough or member mounted in said casing and having longitudinally extended edges at its front and rear sides opposite and spaced apart from the adjacent walls of said casing and affording downwardly extending conduits or passages between said walls and said trough for material discharged from said trough, a revolving distributer mounted in said trough for discharging material over either edge thereof in a wide thin stream, means exteriorly of said casing for adjusting said trough, and means for revolving said distributor in either direction for discharging material into either one or the other of said conduits according to the direction of revolution of said distributer.

2. In combination, housing means affording an elongated distributing chamber, a reversibly revoluble longitudinally feeding laterally discharging distributing screw conveyer mounted in said chamber, means affording a trough for said conveyer having a discharge edge at and extending longitudinally of each side of the latter within said chamber and spaced apart from the longitudinal walls thereof to afford-a passage at each side of said trough for material distributed by said conveyer, said trough comprising a plate below said conveyer movably mounted to afford an outlet at either end of the trough, said housing having supports on which said plate is movably mounted, and adjusting means for said trough exteriorly of said housing.

3. In combination, housing means affording an elongated distributing chamber, a reversibly revoluble longitudinally feeding laterally discharging distributing screw conveyer mounted in said chamber, means affording a trough for said conveyer having a discharge edge at and extending longitudinally of each side of the latter within and spaced apart from the longitudinal walls of said chamber for affording a passage within the latter between said trough and said walls for material distributed by said conveyer, said trough comprising a part below said conveyer movable to afford an outlet at either end of the trough, said housing having supporting means on which said part is removably sustained, and means exteriorly of said housing for adjusting said trough.

a. In combination, a housing affording an elongated distributing chamber and having a movable cover of less length than said chamber applicable to either end of said housing'to afford an inlet opening at the other end of the latter, a reversibly revoluble longitudinally feeding laterally discharging distributing screw conveyer mounted in said chamber, means for revolving said conveyer in either direction, and means affording a trough for said conveyer for discharging material from either side thereof within and spaced apart from the adjacent longitudinal walls of said chamber and affording a pas sage between said trough and the adjacent walls for material distributed by said conveyer, on which said trough is adj ustably mounted.

5. In combination, housing means affording an elongated distributing chamber having a cover of less length than said chamber applicable to said housing to afford an inlet at one end thereof in one position and at the other end thereof in another position, a resaid housing having supporting means versibly revoluble longitudinally feeding laterally discharging distributing screw con; veyer mounted in sald chamber, means for revolvmg said conveyer in either direction,

means affording a trough for said conveyer having an adjustable discharging plate at each side of said conveyer within and spaced apart from the adjacent longitudinal walls of said chamber and affording a passage between said trough and said walls for material distributed by said conveyer, said housing having supporting means on which said plates are adjustably mounted, and means exteriorly of said housing for adjusting said plates respectively. 7

In witness whereof, I have hereunto-signed my name in the presence of two subscribing witnesses.

GEORGE HOLT FRASER.

Witnesses:

SIGVARD Gr. HELLEM, GUs'rAr Sononnnrr.

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