US1285448A - Screen. - Google Patents

Description

(i. F. SPQUNER.

SCREEN.

APPLICA'HON man MAK. 2s, 1918.

2 SHEETS-SHEE' l.

mblirl naenf www" G. F, SPOGNER.

SCREEN.

APPLICATION HLE MAR. 28,19%.

Patented Nov. l), 19

iii' s GUSS F. SPOONER, 0F CHICAGO, ILLINOIS.

SCREEN.

Specication of Letters Patent. Patentdl Nov, im, 9

Application med March 2s, 1918i sei-nn No. 225,320.

To all whom it may concern: v

Be it known that I, GUssF. SPOONER', a citizen of the United States, residing at Chicago, (in the county 'of Cookand State of Illinois, have invented certain new and usefrom a liquid, such, for example, as to divide out or disunite the particles ofvmatter from the liquids of garbage reduction plants.

The invention is not limited or restricted to any particular use or line of industry, but it .lends itself especially favorablyT to employments wherein the solid particles have a tendency to adhere to the sci'eens, and accordingly oneimportant feature of the present invention is an improved-and effective means for cleaning the screens, it being understood that the appliance has a plurality of suoli screens or drains which come into operation successively and act or function more or less conjointly.

A vsimple and convenient embodiment of the invention comprises a suitable frame-4 worl supporting an endless ycarrie-r or conveyer to which a plurality of overlapping hinged 4screens or sieves 'are attached. Coacting with these is a presser-roller which squeezes or presses the solid material on the screens to express the entrapped thcrefroin,'thus rendering such mate-rial 'of a more compact and condensed nature. Such pressure or squeezing action causes these more or less solid particles to adhere or cling to the screens and to clog their intersticcs or apertures. "To automatically clean the screens lthey are permitted to drop in seuence against a fixedor rigid abutment,A whereby the sudden stopping of their fall and the jar given .them shakes olf the adhen ing matter,l leaving the screens compara' tively clean.

The various' instrumentalities employed in veffecting such cleaning, in expressing the liquid, and in preventing the screens from becoming,interlocked. by swinging into contact with one another constitute the prime or leading features or 4characteristics of the invention. Its principal object and salient purpose is the provision of an appliance of this general character which is in structure, simple, in operation, effective and efficient,

liquid and in the cost of production and operation, economical.

To enablelthose skilled in this art to ende!-i stand and appreciate the invention 'from astructural as well as a functional standpoint, l have illustrated a desirable einlmilnnent ot'- -tlie same in the accompanying drawings forming a part of, this speciiieat ion and throughout the various views of which like reference characters refer to the sanne parts..

In these drawings:

Figure l is a plan view of the strimture.; Fig. 2 isa substantiallyv-central, longibalih nal, vertical section through the same:

Fig. 3 illustrates on anenlarged scale and in section the means employed for swinging thesescreens on their pivots preliminar)v to their falling;

Fig. 4 shows the same parts in a different position; and l Fig. 5 is a detail view of the screen revolving or overturning mechanism and the means for preventing the screens from improperly contacting withone another.

The appliance includes any suitable or de sirable framework 20 provided with sui porting legs or posts,I (not shown) and on this framework or table. near its opposite ends, vtwo parallel'shafts 2l and 22 are mounted for rotation in pairs of bearings 23, 23, and 24', 24, the `latter being` adjustable lengthwise the frame or table by screw means 25, 25, for taking out the slack in the conveyer about to-be described. A pair of sprocket- wheels 26, 26, are mounted on and fixed to shaft 2.1 in spaced relation and in like manner shaft 22 is fitted with a pair of alined sprocket- wheels 27, 27. Coperating with and taking around these pairs of wheels are two parallel sprocket-chains 2S` crossconnected together at intervals by hingebars 29, 29, by whiehthe front. edges of the several screens or sie-Ves 30, SO, are hinged to the chains at suitable intervals.

Each of such screens or reticulated or perforated members is slightly tapered rean wardly and at its opposite ends or edges has marginal upstanding perforated or openwork walls or fianges 3l, 3l, the screens overlapping or interfitting slightly as illustrated.7 the wider, front, endportion of each receiving the slightly-narrower, rear, end portion lll@ posite direction.

of round rods 32, 32, on which grooved rollers 33, 33, revoluble on the hinge-rods between the screens and chains, travel to propchains and prevent the erly support the screens from sagging. Also on the framework adjacent to the lower lengths orA stretches of the Chains are similar rods 33a On which the same rollers travel in the op- The appliance is driven by means of-a sprocket-wheelA or pulley 3a secured to a protruding' end of shaft 2l, although any desirable driving Ameans may be substituted. p

The liquid, containing more or less suspended or contained solid matter, is delivered or poured-on to the overlapped screens from a spout'35, shown in full lines in Fig. 2 and in x tted lines in Fig. l. Near one end of the apparatus I provide a pressureroller 36 mounted on a cross-shaft 137 above the screens and revoluble in bearings in a super-frame 36, such roller being desirably provided with a resilient covering or facing 39, such for example, as burlap, which permits a ready eonformationof the surface of the roller to the material passing beneath it, the roller having associated with it a spring-pressed scraper bar or plate a0. Be-

- neath the roller,'below the screens, a supplemental supporting-roller llis employed to h'oldlthe screens up in place and prevent undue distortion or bending.

At one end the. frame is equipped with a :iitably-supported, adjustable, abutment-bar of a length, crosswise the apparatus, slightly less than the length of the shorter longitudinal edge of one of the screens. In passing around one end of the frame, that is, at one end of the endless conveyer, the screens fallin succession on to this stop-bar which suddenly and temporarily arrests their descent, shaking' or jarring ofi all adhering matter. AThen as the chains continue the travel ot' the screen orsieve the latter is drawn off of the abutment, swings down, and hangs vertically vsuspended from the sprocket-chains in traversing the space helow the .lower stretch of the chains.

I provide special means to swing the screens over and cause their sudden fall on to the abutment, and also means for preventing the screens upon leaving the abutment from swinging into contact with their suspended neighboring screens. If the screens are allowed to rock: or swing into contact with one another, they are likely, owing to their tapered construction and the more or less rough nature of the screens themselves, to become interlocked, which prevents their laying out flat when travers` ing the upper part of the appliance. Ae-

vcordnrgly, shaft 22 has a two-armed pushing or overturning member fastened te it,

' the free or outer ends of the arms being bent rearwardly at 6l, to each of which ends al panion bar 65 hung thereon pliance performs two functions. It positively engages each clogged screen as 1t arrives in position above it and overturns it at adeiinite point in its travel, assuring that all screens will fall and strike the abutment in the same manner and secure practically the same jar or jolt for each, and it apts additionally as a safety appliance in that it prevents any of the screens from traveling teo far 'with the conveyer before falling and thus possibly not striking the stop-bar. Its second operation is to prevent the screens from swinging into contact with one another after dropping oit of the abutment.

As .is shown in Fig. 2, as each screen approaches the end ofthe conveyer, one of the arms 60 comes up beneath it and begins to turn it upwardly around its forwardly-traveling hinge-bar 29. lNhen such hinge-bar has reached the positionv illustrated in' Fig. 3, vits screen will have been swung by the pusher, lifter, or overthrowing arm into vertical position and immediately it falls over and strikes abutment 50, from Awhich -it gradually recedes until it is about to drop oft, as shown in Fig. 4.

When the screen frees itself from the shelf or abutment, it falls or swings down into the dotted line position of Fig. 4, striking the end of bar 65 of the other arm of part 60,-which prevents it from coming into contact with the next screen ahead of it. At this time bar 62 is vin contact and supported by the end of the bent section 61 and the extension-bar 65 is projected its full limit both of-which conditions have been brought about automatically by the action. of gravity on the structural elements concerned. At this point the inclination of the companion bars 62 and 65 is such that the screens hitting the end of the latter' cannot push it upwardly out of position, so that the bar acts temporarily as an effective stop against the detrimental or excess've swinging referred As the lower arm 60 Ain Fig. 4 continues traveling upwardly, bar 62 and its comswing on the pivot or hinge of the for-nier tion shown in Figs. 2 and 3, which permits the arm 60 to raise its screen without having thel parts 62 and 65 conflict with or strike the next screen or its hinge-bar.. As the 'rotation of shaft 22 proceeds, such upper arm 60, when reaching the position of the lower arm 60 in'Fig. 2, has its bars 62 and 65 folded or compacted 'as shown, that is to say, bar I6'5 has slidtown due to gravity so that itsiextension `eyond bar 62 is a minimum, and. 't rests on the hub of arm 60.l Then upon urther rotation .of the shaft this contracted'armswings down into the relami; 1in into the positien shown fr lmver pair el 3. @Wing to the nai during' this swinging the arins G2 55 are contracted or teleseoped the lates'f `ies engagement nit-h the screen just inve ii'. l3nt, as has been indicated above, hier@ it is neee ry' for sueli liar 65 te heL eeme active a stop 'it slides down by i inte the relatiei-i illustrated in ree ifed in a tank er i' Ul ceptaele O. The eoiitained solid matter cannot tien' with it over the edges et the sei-eens :it the sides ot the machine becauseoI" the reieulated flanges. il/hen such solid inatreaehes Vthe roller 3S it squeezed or and any ein iss 'material e. ich will not. readily gass i der the roller is held haelt by it until the thickness et' the r t reduced sufiieiently to permit e Thusv seine of suehsolid inater nali" iioid Uncle my the rimer and caused pass from une sereen to the next. llndesired lateral expression ot the matter prei'e "ed by the rimsl or flanges on the screens. The resilient er elastic facing on the roller permits its snrtaee to contorni mere, er le ll te the material passing heneatli i. and te press somewhat into the, holes er interati Y the Screens. llolle: i in the nature f rolling support io hohl snr-ene up to work, pir-.venting imle (iQ/tien. .Y

i s the end el the apparatus. liited and caused te fall :nld

vel

Y il

lite ti lmtinent, thus Cleaning' it. and sellarI ing all :sanering matter. Later the screen leares the anulment and 'falls theretroni lie-ing prevented trein swinging inte en njagem the next Screen by the means fr i ated and deserilied above.

Ils these reine up ai.. the other end et the mechanism, they aline overlapped relation. unitedly er eenloinlv forming a, moving' seieen et substantial capacity.

To these skilled in this art the attainment elf the des (l objects specified in the inee'ianisin eeserihed will he readily understood.` hut it is aise to be appreciated that the. iiivention is' not limited and restricted the precise an.; exact Structural features ,ima-file t flows out through a I the liquid draining through into the 're-I aeh screen orthemselves: in

presented beeanse many ininoi mechanical changes may be made in the apparatus Without. the saeriliee'of any of its substantial benefits and adrantagesv and without depar- 'tnre from the Substance and heart of the in* Yention. For example, in the drawings I ha ve shown the roller 3G of sufiieient weightto adequateli7 perform its squeezing function, initif desired, sueh roller may be supplenientee by Spring means to augment its pressure against the screens and their contents.

l Claim:

l. in an' appliance o the character described, the Combination of an endless-eenveyer, a plurality ot' screens mounted on said 'eonveyer9 a roller overlying sue-rh screens and adapted to Squeeze the material restin` there? on, and means to )ar said screens in suroession Aafter passing said r ller to free the-ni troni adhering' matter, substantially as described.

In an appliance of the character deseribed, the combination of an endless-conreyer., a plurality of screens mounted on said eonvei/v'er, means to squeeze the material resting en said screens, and means to jar said.

sereens in succession after passing said squeezing means te free theni -troniadhering 'matten substantially as described.

l5. in an appliance of the character deserihed the eoinbination of an endless-coin vever. a plurality et Screens mounted on said eonvejver and adapted to overlap one another during' at least a portion of their travel, a relier overlying such overlapped sereensand ad a nl e4 to squeeze the material' resting the-reen, and means to jar said screens in sucressien atteigliassiiig saidl roller to free them troni adhering,` n'iatter, substantially as described.

l. ln an appliance, of the Character described, he eenibina'l'ion or an endless-Aeonve-yer, a plui'alityot screens mounted on said eonieyer and adapted to overlap one another dnriiw at leasty a ,1 portion of their travel.y means to Squeeze the material restingl on said screens, and means lo gar said s'sreens in sureessien alter passing .said squeezing means to free their. from adhering matter, substantialllvT as described.

5. in an applianee ot' the Charaeter describe-d, 'the eeinliination of an endless-rouvever, a plurality of sereex'ishinied to said renveyer and adapted te overlap "mey another dm .nir at least a portion ol their travel, a roller ,\'*erl.\1in;i' said overlapped srreens and adapted to squeeze the material restingy thereen, and an abutment adapted to he struelelrv said hinged screens) as they fall during change in their direeltion et travel at, one end. et the exidlessfeonrever, whereby te "ie sereene frein adhering,r matter, snbist-anti ll); as .leserieed i In an appliance of the, eharacter desei-ibed, the combination of an endless-oon-` ion iee

' rveyer,l a plurality of screens hinged to said conveyer and adapted to overlap one another during at least a portion of their travel, means overlying said overlapped screens and adapted to press the material resting thereon, and an abutment adapted to be struck by said hinged screens as they fall during change in their direction of travel at one end of the endless-conveyer, whereby to free the screens from vadhering matter, substantially as described.

7. In an appliance of the character described, the combination of an endlesscon veyer, a plurality of screens mounted on said conveyer and adapted to overlap one another during at least a portion of their travel, said screens having upstanding end flanges also adapted to, overlap one another, a roller overlying such overlapped screens and adapted to squeeze the material resting thereon, and means to jar said screens in succession after passing such roller to free them from adhering matter, substantially as described.

8. In an appliance of the character described, the combination of an endless-com veyer,.a plurality of screens hinged to said conveyer, an abutment adapted t0 be struck by said hinged screens as they change their direction of travel at one end of the endlessconveyer, whereby to the screens free from adhering matter, and means to prevent the screens depending from said conveyer from swinging into contact with one another, substantially as described.

9. In an appliance of the character described, tlie combination of an endless-eonveyer, a plurality of screens hinged to said conveyer and adapted to overlap one another uring 'at least a portion of their travel, a

z' roller overlying said overlapped screens and adapted to squeeze the material resting thereon, an abutment adapted' to be struck other, substantially as described.

by said hingedscreens as they fall during their change of' direction of travel at one end of the endless-conveyer. whereby to jar the screens free from 'adhering mattei', and means' to prevent-the screens depending from said conveyer after leaving said 'abutment rom swinging into contact with one an- 10. In an appliance of the character described, the combination of an endless-conveyer, a plurality of screens hinged,v to said conveyer, an abutment adaptedsto'"bestruckby the screens to -jar them free from adhering matter, and meanssupplemental to said conveyer-'to swing said screens in succession yabout their hinge connections with the con- Yveyer preliminary to their striking said abutment, substantiallyl as described.

`from adhering Lasagne from adhering matter, and means on one of said s. afts and supplemental to said conveyer to swing said screens in succession about their hinge connections with the conveyer preliminary to their striking said abutment, substantially Yas described.

l2. In an appliance of the character described, the combination of an endless-.conveyer, a plurality of .screens hinged to said conveyer, an abutment against which said screens are adapted to fall, and automatically expanding and contracting means to prevents the screens upon leaving said abutment from swinging into contact with an adjacent screen, substantially -as described.

13. In an appliance of the character described, the combination of an endless-conveyer, a plurality of screens hiliged to said conveyer, an abutment against which said screens are adapted to fall, and automatically expanding and contracting means to prevent the .screens upon leaving said abutment from swinging into contact with an adjacent screen, including a hinged member and a second member slidable thereon, substantially as described.

14. In an appliance of the character described the combination of an endless-conveyer, a plurality of screens hinged to said conveyer, an abutment against which said screens are adapted to fall, a rotary arm adapted to overturn said screens, and automatically expanding and contracting means on said arm to prevent the screens upon leaving said abutment from swinging into con* tact with an adjacent screen, including a bar hinged to the end of said arm, and a second bar slidable on said hinged bar, substantially as described.

15. In the appliance of the character described, the combination of an endless-corr veyer, a plurality of screens hinged to said conveyer, an abutment against which said screens are adapted to fall jarring them free matter, means supplemental to said conveyer to turn said screens in succession about their hinged connections with the conveyer preliminary to their striking tially as described.

GUSS F. SPOONER'.

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