Патент USA US2502162
код для вставкиMarch 28, 1950 "r. F. LILLY 2502,161 ICE PICKING AND GRADING MACHINE Filed Aug. 16, 1943 "5’ Sheets-Sheet 1 March 28, 1950 1". F. LILLY v 2,502,161 I-CE PICKING AND GRADING MACHINE Filed Aug. 16, 1945 ‘ I ' s Sheeté-Sheet 2 March 28, 1950 *r. F. LILLY 2,502,161 ICE PICKING VAND GRADING MACHINE Filed Aug. 16', 1943 E51 ‘ I 5 Sheets-Sheet 3 4 - 3y awe/whoa March 28, 1950 'r. F. LILLY 2,502,161 ICE PICKING AND GRADING MQCHINE Filed Aug. 16, 1943 * 5 Sheets-Sheet 4 March 28, 1950, _ _ ICE‘PICKING AND GRADING MACHINE = ‘Filed Aug. 16, 1943 f V 2,502,161 T. F, LILLY '5 Sheets-Sheet 5' V II’IIII’IIIIIIIIIII’I” ' ‘a Patented Mar. 28, 1950 2,502,161 UNITED STATES PATENT OFFICE 2,502,161 ICE PICKING AND GRADING MACHINE Thomas F. Lilly, Memphis, Tenn; Teresa K. ‘Lilly executrix of said Thomas F. Lilly, de- . ceased Application August'16, 1943, Serial No. 498,840 20 Claims. (Cl.;241--60) 1 2 My invention relates to an ice picking and grading machine and it is an object of the same to provide, in connection with a machine having ice picking means and a rotary grading sieve, a Fig. 4, an elevation of the inside of a screen of modi?ed form, - ' Fig. 5, a section of the same, Fig. 6, a partial vertical section on line 6-6 of means for maintaining the same at a low tem perature so as to prevent accumulation of ice on Fig. 1, on an enlarged scale, or about the sieve, such means being termed by of Fig. 1, seen from the left in Fig. 6. me sub-cooling means. ’ Fig. '7, a partial side elevation of the machine Such machines are com I Fig. 8, a horizontal section on line 8—8 of Fig. 1, monly operated in vaults wherein the tempera ture is low, e. g., about 30° F., but frequently the Fig. 9, a side elevation of a modi?cation, partly in section, temperature is allowed to rise as when a vault door is allowed to remain open for a- short time. Warm air rushes in and the ice particles on the screen melt and later freeze again, clogging the screen and loading it with ice. Such clogging and loading interfere in obvious ways with proper ' Fig. ‘10, a vertical section on line l0—-l0 of Fig; 9, ’ Fig. 11, a section on line I l-—l l of Fig. ‘10, Fig. 12, a partial vertical section, showing the relation of a bin to an automatic weigher, , Fig. 13, a part section of another modi?cation, operation of the machine. and ' Since there are usually refrigerant coils at the Fig. 14, a detail of parts shown in Fig. '13. top of such valults I have taken advantage of such In the drawings, reference character 20 indiq cooling of the upper air as is caused by the cool 20 cates a hopper or chute into which cakes of ice,‘ ing coils to provide means that will keep the which may be of the conventional size of approxi temperature of the machine normally down to mately 11 in. x 22 in. x 3 to 4 feet high may be approximately 10° F. below that of the remainder inserted and picked to pieces by the rotary pick of the vault, regardless of conditions outside the drum 2|. Such blocks are commonly scored and machine. split so as to make blocks weighing from 25 to 100 Another object of the invention is to prevent pounds, and these or other sizes may be used in any melting of the ice fragments on their way machines of various sizes built according to my to the grading means. For example, in one form invention, as may be desirable on account of the of my invention the ice fragments produced by size of the machine or for other reasons. It isv the picking means are conveyed to the grader 30 to be understood that various of the expedients by an elevating conveyor. By preventing access herein disclosed for treatment or handling, of of heat'or of warm air to ‘the ice piecesin their travel adhesion and regelation are prevented and “picked” ice'are equally applicable to ice formed in small pieces or fragmented in any other man the pieces remain at desired size and are" pre vented from sticking to parts of the mechanism‘. Another object of the invention is to provide means for protecting the machine against drip; ping of water and ice particles thereinto when the coils above it are being defrosted, thus avoidingv contamination of ice in the machine and of the screens. her than as herein disclosed, and that terms such as “cracked,” “chipped” and “broken” are, there-, fore, used in a descriptive sense, rather than in a limiting sense. The parts above referred to may be as in my Patent No. 2,237,078, but in a pre ferred form of the invention as herein disclosed I provide an elevator for feeding the broken ice to the grader 22, said elevator comprising an end dirtyi'ng _ Another object is to provide means for prevent; less band or belt trained about a pair of pulleys 24, 25 which are solid so that no ice fragments ing accumulation of ice on parts of the ma-, chinev where such accumulation is objectionable, whether due to collection of broken ice or to freez-v can enter their surfaces and interfere with their: action on the band 23. Solid pulleys also con‘ ing of water or watery vapor. ‘Referringto' the drawings, which are made a part .of this application and in which similar tribute to neat-ness of appearance and to cleanli ness of the machine. and so make for good sani-, reference characters indicate similar parts: " Fig. 1 is’ a side elevation of one form of my in-; vention, partly in section, ‘ Fig." 2. a vertical cross section of the same on line 2~_2 of Fig. 1, ~ ' Fig.3, a horizontal section on line 8--3'of Fig}, -- . tation. The lower pulley is driven by suitable means independent of other driven parts, such as a separate motor or, as here shown, by a belt pulley 25' driven by a separate motor (not shown). The belt carries buckets 26 so formed and co ordinated with the speed of the linear travel of the .belt as to avoid any sliding of the ice frag-_ 55 ments on the buckets, which would give rise to 2,502,161 3 4 friction and so might cause melting of the ice. For this purpose the bottoms of the buckets have an inclination of about 7° from the horizontal, ice to the ?rst bin 40, larger fragments to the and the conveyor is run at a speed of about 250 ft. per minute. The ice fragments are taken up on the bin 43. a floor of a bucket and travel to the top of the conveyor and are thrown into the rotary sieve, all without any slipping or sliding on the bottom of the bucket or any other part of the elevator of approximately 30° to the horizontal leading to during such travel. next bin 4|, and so on, the largest pieces being discharged through the end of the cylinder into Each of the bins has a floor at an inclination a wide opening 44. I have found that ice frag ments will slide freely down an incline of this angle while a floor so inclined will bear the bulk of the weight of the ice. The greater part of Each run of the conveyor is enclosed separately the weight being borne by the floor, the ice will in a casing comprising vertical sides 21, 21 and be muchless likely to arch over and the wide ends 28, said casing being open at 29 to permit ' angle produced by the low angle of the floor the ice blocks to enter, and being also open at 30, makes it almost impossible for the ice to arch as further explained hereinafter. I 15 over. This feature, together with the sub-cool The rotary grader has at each end a rim 3! ing features hereinafter discussed, are effective with a friction ring 32 of rubber orother suit ~ to prevent coalescing or regelation of the ice able composition encircling it in some such. man ' fragments in the bin and consequent interfer ner as that shown in Fig. 11, where an-annulus ' ence with the free ?ow of sized ice out of the 3Ia that is U-shaped in cross section is welded '20 bin as it is taken out of the port 44. When the to a-?at ring 31b that is bolted to another ring bins are underneath the graders it is at least as 3lc of L-shaped section that is secured to the important‘ to have the cold air flowing through end of the screen 22. Preferably the tire 3| the bins as through the sieves, in order to keep contains wires 32'. The friction rings or tires the ?uent ice in dry condition so that it will at each end of the screen rest on friction wheels or~gears 33 of any suitable material and con struction, said gears being mounted on shafts ‘314, 34 and being connected by a belt and driven by a separate motor (not shown) thus friction ally driving the grading cylinder. The advan— tages of such a drive in a machine of this char acter are several. Thus the rubber tires contrib flow freely. . Hinged to the upper end of the frame there are ?at side and end pieces of sheet metal, can vas or other suitable sheet material, preferably inclined outwardly and upwardly and being de tachably connected to cooling coils above the machine by means comprising upper blocks 46 and lower blocks 41 connected by bolts 48 bent ute immeasurably to the quiet, smooth, clean at their lower ends to form hooks adapted for running of the machine, the use of noisy, clash~ ing gears and chains being-thus avoided; in the 35 engagement by links 49 secured to said side and‘ end pieces. Preferably the side members are operation of the machine ice frequently forms on formed as two pieces 50 and 5| hinged together the screen and loads it down or it forms between at 52, the lower piece being hinged to the ma the grading cylinder and some of the fixed parts chine frame at 53 and adapted to fold over and or pieces of ice fall between such members. In any such event the rotation of the cylinder is re 40 cover the machine as indicated in dotted lines at the upper part of Figs. 2 and 10, thus protect sisted, and may even be impossible on account ing the machine when not in use and also pro~ of. the bridging of ice between rotary and fixed tecting it against falling ice and water during parts. If the machine is built- with a central shaft and spokes extending therefrom to the pe riphery the spokes become twisted and broken under such conditions. Frequently also the screen is torn, and in any event there is loss of time and costly repairs are often called for be l'ore running can be resumed. But when the grading cylinder is frictionally driven itv can merely stand still in case of such accidents as just described, and remain so until the obstruc tion has been removed. ' The body of the screen is preferably of such material as described in my previous patent, but I havealso shown in Figs. 4 and 5 a screen 35 of a different variety, said screen consisting of sheet defrosting of the coils above it. " The end members are hinged at 55 to swing downward out of the way of the f-oldable side members. Ba?les 55, 56 cause the descending cold, air coming down from the coils to flow about and through the cylinder and hinder‘its progress downward through the bins and so out of the machine. Vertical side and end members can be used with considerable success, and they are obviously an improvement over the usual prac: tice of having no conduit whatever to guide and con?ne the downward ?owing cold air from-the coils 45, but by slanting the side and end mem bers outward at an angle of about 45° the cool— metal with triangular apertures 36 formed by ing action is increased to four or ?ve times as; striking up triangular projections 36' each out much as that produced by the use of mere ver along two edges 31, 38 and bent inwardly of the M tical side and end members. screen, as shown at the bottom of Fig. 4, the The above arrangement, which I'term a sub cooler, has another function besides that of keep third side of the projection remaining attached the body of the sheet. These projections are ing the screen clean and free to move and to sift arranged with their bases lying in a spiral run freely, in that the portion 56 of the casing above nlng along the inner periphery of the cylindrical the picker is so formed as to serve as a conduit for cold air to pass downward to the opening at 29, and into the casing of the conveyor where the buckets create an upward current of cold air that is carried along with the broken ice‘to ther advantage of low cost as compared with a 70 prevent melting. At the other side of the con veyor cold air passes through opening 3lJyand is woven screen of wire or ?at strip material. Of carried down by the descending buckets, keeping course, as in a mesh screen, the openings are smaller in that section of the screen next to the them dry and cold so that contact therewith will not melt the ice chips picked-up by the ascend outlet of the elevator, and increasingly larger screen, and-thus they serve both to provide aper tures for escape of ice fragments, and-alsov as meansfor feeding the mass of fragments axially of ‘the screen. A screen of this type has the fur in‘successive sections, so as to‘ discharge snow ing buckets. The cold air in passing out through? 2,502,’! 61 5 6 chute .20 helps. to congeal any moisture on the the ‘formation ‘of "ice in ‘and about, the ‘guides ice blocks as they are fed to the chute. A substantial part of the cold air from the for such doors. Normally ice will form at the upper ends of the doors and along and about coils ?nally passes out through ports 44 of the ice vbins and in its passage through the bins it the guides and hinder or even prevent move ment of the doors to open or close them, but by blowing air under pressure along the side edges of the doors formation of ice there is prevented. keeps the crushed sized ice pieces dry and cold, thus preventing cohesion of fragments and ad hesion thereof to the contiguous surfaces of ‘the Since the guides are open at their inner sides bins. It is very difficult to keep sized ice in an air current from each guide will blow across storage and it must be kept at a temperature 10 the upper end of the corresponding door and‘ below 32° F. in order to keep it dry. If ‘the tem effectually prevent formation or collection of ice‘ perature rises the ice becomes damp, absorbs there, and in case ice has formed before the odors, collects. bacteria and algae, rusts' every current starts the blast will remove the ice. thing lt comes in contact with, ‘and mats to‘ The pick drum may be driven as in my patent gether so that it becomes very diflicult to handle. above mentioned, but preferably it is driven by These difficulties are avoided, as to the bins 40 means of a motor having two or even more speeds, to. 43, by the use of the sub-cooler. _As above this» motor being indicated at 'I3_ as connected stated the sized ice, being kept at a low tempera‘ through reducing gearing ‘I4 to the shaft ‘I5. or ture, will flow freely. In previous arrangements the pick drum 2!, the object being to increase a ?at-bottomed bin was used and the ice was taken out with a shovel, or else a funnel-shaped bin was utilized, but in the case of ‘such ex , the possibilities of the machine to make ice in pedients there is continual diniculty due to the fact that the crushed ice “bridges" over the out let and so stops the flow. With my formof bin much labor and delay are avoided. I have shown at 63 in Fig. 2 a conventional ice-carrying bag under the outlet 44 of a bin, but of course any other carrying or conveying duced will be in one range of sizes, while if it is driven at a higher speed the range of sizes will be ‘different, i. e., at the lower speed ‘the pieces will run larger, or through a range of such'size as'desired by the user. Thus by driving the drum at one speed the ice fragments pro larger sizes, whereas at the higher speed the pieces will run smaller, i. e., through a range of smaller sizes. This is a very practical ad vantage, as numerous sizes are called for by means may be used. I" have found that very important advantages may be derived in my machine from the use of different customers to meet different situations or ‘for varioususes, and it is secured in varying currents of air other than the slow-?owing thermosyphonic current in the main conduit for that end, as well as by the means disclosed degree by the several expedients herein disclosed provided by parts to, El, 54, 56, etc., said current passing down from the cooling‘coils through the fragmentation and grading means and then in my prior patent. In the form of the invention shown in Figs. 9 and 1B the parts not speci?cally referred to may through the dispensing and storage vbins. Thus be as. in Figs. 1 and 2. In these ‘figures however by means of an electric fan GI, driven by the usual fan motor, air may be drawn through an intake GI’ and forced through either or both of a pair of conduits I52 and 63'. By means of con-' duit 62 the air is led into the conveyor and the sub-cooler body I BI is preferably made of down on the lower pulley 24. cloth such as canvas or other similar ?exible‘ material, e. g.. leather, cellophane, etc. Prefer-v ably the conduit is made as a single funnel-like member having sheets of canvas stitched to gether at the corners. The side portions have at their upper ends battens I 02 provided with links I03 ‘for attachment to the hooks I04 car ried by the cooling coils, as in the form pre-, Any small frag ments of ice that may be caught on the belt are blown out to the outer side of the belt, ‘but what is much more remarkable, the air current blow ing on the pulley keeps the moisture from con gealing on the pulley and so interfering with its viously described. The canvas end members may also be reinforced at theirvupper ends if desired but are preferably left unreinforced so that they proper action on the belt, and in case the fan is started when there is already a coating of ice can fold in under the battens on the side por on the pulley the ice will actually be removed tions of the funnel IGI. At the lower end of the‘ from‘the pulley by the action of the draft of cold canvas portions they are wrapped about battens air, and the pulley will thereafter remain free H15 ~that are secured to side frame angle iron of ice. 'The current produced by the fan' is also 55 members I06 by bolts I 87 passing through further useful in that it helps to start the air posts I58." , ?owing downward from the intakes 30 and 64 ‘The sieve is driven, as before, by friction rings (Fig. 1) from the cooling coils 45 through the 32‘ resting on friction gears or pulleys of rubber elevator and the picker drum 2| and out ‘of the‘ or the'like on driven shafts 34. ‘ chute 20. ' Instead of the bins with inclined bottoms I As a feature that is sometimes desirable I have have here shown cubical bins I09, "19a, "1%, shown a swinging door 65 (Fig. ‘1) pivoted at Hi9c't-o receive the different grades of ice sup 6B and so mounted that it maybe pushed inward plied by the rotary grader, which are here shown by an entering block of ice, missing the breaker as being supplied, by means III] such as in my bar mechanism shown, at 6.1, and then closing 65 prior patent, with picked fragments of ice. The again as the block passes beyond the door. bins are shown as open at one side, though they The air passing through the conduit "63 goes to may be closed by means including suitable doors a- horizontal tube I53. (Figs. land 2) from which or gates. A useful feature of such bins is a branches I53v lead downward, to guides '10‘ mounted swingablepartition valve III on one or more of on the front wall ‘II. "(Fig ‘8) forming part of" Til the partitions, here shown as hinged at H2 and each of the bins 417 to 43,. Doors 12 are slidably having its position limited by a chain or cord I I3 mounted in each of a pair of the guides ‘Ill. so as to open the doorways in the bins to the de sired extent as the doors aregmoved upward. -The purposevof this construction; is to do away: with‘. adapted to be fastened in adjusted position in" any suitable manner. In this showing the binv 1.09 receives .the smallest particles of ice (known ,.... Ii) in'the trade" as snow ice) the greaterv part ofthe‘ 2,502,161 8 7 smallest fragments falling through the sieveat' block of‘ ice or mass of ice fragments and-‘rout through the perforated bottom and on out ‘of once, and increasingly larger sizes rattling pro the opening I33 in member I3I or out at some gressively farther along the sieve ‘to the next other point, as the case may be, quickly drying bin or to other bins still farther from the inlet. - If it is desired to vary the proportions of ice 5 and/or freezing the moisture remaining on the ice, whether it be a block or a mass of fragments. discharged respectively to bins I09 and N91; the It will be obvious to those skilled in the art‘ position of the swingable partition is changed, and it‘will be obvious that this may be varied-to any desired extent, from a position where only a very small amount of the very ?nest ice frag ments (snow ice) falls into bin I09 and a much greater quantity goes to bin I09a, to a position where a much larger proportion of the ice is sup plied to bin I09. Similar arrangements may be vmade ‘with respect to the other bins, but the arrangement is particularly felicitous with re spect to bin I09 because this machine makes so very little snow ice. » " vIn Fig. 12 I have shown an automatic weigh ing machine for weighing and dispensing weighed amounts of ice, vthe machine being shown as ar ranged‘ in cooperative relation with a bin H5 having a port I I6. The bin may be identical with that many changes may be made in the devices of my invention and ‘in the various features thereof, and that some of the features may be put to other uses than those set forth, all with out departing from the spirit of the invention; therefore I do not limit myself to what is shown in the drawings and described in the speci?cai-i tion but only as set forth in the appended claims. As one instance of such other uses, the method of blowing air on‘ a surface where ice is liable to form may be usefully applied to household refrig erators to avoid the necessity of defrosting and.v 20 to distribute an‘ even temperature throughout the-refrigerator. I I claim: ; ' - . ‘ 1. In combination with a machine for reduc-: ing blocks of ice to smaller fragments, said ma-~ chine being adapted for use in a vault with over-I those shown in Figs. 1 and 2 except that there is a catch‘II‘I projecting below the lower end of head cooling coils, a conduit enclosing normally the bin in position for engagement with the outer exposed ice-containing portions of said machine, ends I I8 of the vanes I I9 of a series arranged be said conduit extending upward toward said coils tween disks I20, which disks are located at the‘ so as to form a closed conduit for conductingv ends of the vanes and coact therewith to form compartments to be ?lled withv ice from the bin. 30 cold air to: said machine, said conduit being At‘the intersection of the vanes the entire rotary collapsible and being so constructed and ar receptacle which is provided with said compart ranged as to cover the machine, and the ice' ments is pivoted at I2I on a beam I22 pivoted in therein when collapsed, so as to protect the same, turn at I23 and‘ carrying a counterweight I24 as when the coils are being defrosted. that is adjustable along the beam and which 36 2. A device for use in a vault with overhead holds the parts in the position shown until a cooling coils, comprising means normally expos quantity of ice is received in the active compart ing ice to room ‘temperature in the vault, 'a‘ ment sufficient to tilt the beam I22, the amount conduit surrounding the area in which ice is‘ being predetermined by adjustment of the normally so exposed, said conduit extending up-' counterweight I24 so as to dispense any desired 40 ward toward said coils to conduct cold air from‘ weight of ice. When the lever tilts the projections said coils'to said ice, and quickly detachable Ill and H8 separate, and then the rotary wheel means for suspending said conduit from said is permitted to turn, dumping the ?lled compart ment and bringing the next in series into position to be ?lled. . coils. ' - ‘ 3. A device for use in a vault having overhead cooling coils, comprising means normally expose. In the form of the invention shown in Figs. 13 and 14, all parts may be as in Figs. 1 and 2, or as in Figs. 9 and 10, as may be desired, but an exten sion is provided on the sub-cooler, said extension comprising side members I29 connected to the previously described side members at I30, and an end member I3I connected to an end member of the previously described sub~cooler at I32. The ing ice to the room temperature of the vault and, a conduit surrounding the space in which ice is‘. normally so exposed, said conduit extending up ward toward said coils to conduct cold air from‘ I said coils to said ice, said conduit being collaps ible ‘into a position to cover said ice and to pro» tect it while said coils are being defrosted. extension is of such size as to admit a vehicle of desired character, such as a wheelbarrow, a ?oor cooling coils, comprising means normally expos ing ice to the room temperature of the vault and a conduit surrounding the space in which ice is truck, or a larger truck or even a ?at car, accord ing to convenience or desire. For this purpose it is desirable to provide at the lower end of said end member I3I an aperture I33 of a size suitable to .4. A device for use in a vault having overhead normally so exposed, said conduit extending up; ward toward said coils to conduct cold air from said coils to said ice, ‘said conduit being made‘ ?t around the body of the vehicle intended to 60 of ?exible sheet material collapsible into a posi-‘ be used, or to ?t approximately about the same. tion to cover said ice. ' The utility of this arrangement arises out of the 5. A device for use in a vault having overhead factthat it is often necessary to wash ice before cooling coils, comprising means normally expos-_ sizing, either because some ice blocks may not ing ice to the room temperature of the vault be clean, or because it is desired to salvage scrap‘ 65 and a conduit surrounding the space’in which ice collected about a plant and usually not clean." ice is normally so exposed, said conduit extend Such-ice is‘ placed in a vehicle with a perforated ing upward toward said coils to conduct cold bottom,re. g., the wheelbarrow shown and having air ‘from said‘coils to said ice, said conduit being a perforated bottom I26 and an elongated front collapsible into a position to cover said ice and member built at a low angle to aid in dumping 70 to protect it when said coils are being defrosted," the same, and the ice is washed by means of a and quickly detachable means connecting the‘ hose or in some other way. After the washing upper end of said conduit to said coils. the vehicle is moved through said opening to a 6. A device for use in a vault having overhead position inside the extension, and cold air ?ows cooling coils, comprising means normally exposiv down from above, passing over and through the ing-ice to- the room temperature of the va'ulti andiawion'duit surrounding"the,-,space iin'fwhich rice is- normally-*so'exposed: saidfconduitiextend "'ing upward toward‘said'coils’to conduct lfcold ‘ air from‘said'coiis'to'said‘icefthe walls! of“said .to the ‘sizing means, 'a‘ca‘sing enclosing said cori "veyorya. port at'ithe bottom of said ca'sing'to receiving ice'from said picker and cold air'from said conduit; an'd‘a port‘ leading from said con ~~conduit*‘?aring'outward'fromi‘their ‘lower end <5 unit into" the upper end of said casing'for also " receiving" cold air ‘from said conduit. ‘I tor-their“ upperrend‘so' as‘ to’ embrace a'relatively ‘v‘i'arge *areaadjacent ‘said “cooling coils"an‘d to “conduct-‘commute fa"re1ative1y small‘area to “bewooléd’theroby. ' “ ' ‘ i3.v 'I'he‘combination‘with a'room having over head cooling co'ilsfice picking and sizing ap paratus in said ‘room, said apparatus comprising “"7.'In "combination ‘with ‘an ice rmachine‘tio' ice picking means, ice .sizing means elevated ' adapted ' for use‘in‘a‘ vault" having overhead; cool with relation to ‘theipicking means, and an ele fing coils, said machine'having“ ice pickingmeans vating conveyor'for; ice, acasing enclosing said ‘at'a'relatively"low"level, ‘icefg'ra'ding means -at a conveyor, a conduitcen'closing saidypicking and Tfelatively ‘ high ' revel, ' means ' for elevating ‘ -ice_ I ' sizing apparatus?said.conduit. extending ‘down "fragments from‘ "said‘picking' 'mea'ns tos'aidgrad- "15 ward from said.coilsiand,_.providing a path for , gravityv ?ow oiv air. coolecLbysaid coils down over '“ing ‘means, ‘said"e1evating=.means including a said apparatus, .andl-aportconnecting said.cas— ‘,bucket conveyor‘ 'with separately- enclosed. runs, iiand'sublcoolin'g “ means comprising aicoriduit mg about said elevator to the conduitto provide ‘ leading ‘from " said‘ coils~ to‘ the""en‘closure'.'forIthe a. currentoii cold airaabcut saidconveyor. Zactive run or said‘conveyorjadjacent saidgpick-t‘go "'ing means so ‘that‘a'current?f .cold air- is‘ caused i'by said buckets'to' move'along With the ice'frag ,14. The combination -with.a. room having over head cooling _coils,,-ice, picking. and sizing >.ap .paratus in said roomH-said: apparatuscomprising I merits‘. carried‘ to‘ ‘the ‘grading 'device. a. ‘A. device ' as' in'claim ‘1:2, , said conduit e150 _ J communicating with‘ the enclosure forlthe-o‘ther ‘run of. said conveyor adjacent-to said grading .'.devic_e, so'ltha?the“buckets'itherein maintain a ice , picking means, ice .sizing ,means l elevated -With relationto theipickinglmeans, ..a-.belt con~ veyor for carrying ice from thenpick-ing means to , the ., sizing. means, “a . ,conduit enclosing said ; picking and sizing gapparatusmsaid econduit , vex 'current of cold‘ air in contactawith theT-descerid _ tending . downward.‘ fronnsaid coils ;.and forming 'J-ing‘ bu'ck'e'ts, as arid'for"the',purposes s'et'vforth. T9. ‘In a vaultfthe combination of-over-head .a conduit vfor;,gravity.c?ow-uof a:current-of cold air from . said-,coils cover 3581C}. . =.machin_e, ~upper ‘cooling c'oils, means"for.exposing ice ll¢to~room -. and lower pulleys supporting; said-;conv.eyor,',-and temperature in ‘the vault, aldemountable con .> a fan connecteditotdraw colm'airzfromzsaid con .and extending’from" a lev‘élLblose to Qtheecdils - duit and .blow'uit againstatheiowencpulley,of said conveyor. iduit ‘suspendedYromWhe,overhead cooling-coils Idown pa'stithe space occupiédlby SuGh--iiCer-and%" surrounding said I l?i-‘Thecombination or avaiilt having-over ; 15.‘ The, combinationrwithiac-room having. over head coolingrcoilssice :pickinguand sizing ap paratus in; saidroom, =saidzapparatus :comprising .-head~cooling c6ils, a condiiit sextending 1 from ice picking 'means,'ice sizing means elevated {the neighborhodd 6f said..c6il& approximately-to with relation to the picking means and an ele fthe fioorLthereéf an'd prdviding' a pathéfor, a?“ vating conveyor"iforccarryingi'the>ice fragments to the sizing means, a casing about said con— downward current of "thermoesyphonieal-ly -.-cir 'veyor, a‘ conduit'enclosing' said ‘pickingarid ‘siz mg apparatus, said conduit "extending “down v.movably extending "throughmsaid opening "into ward from :the; region of;said.coilsr.and forming said path" to a distance sufficient to expose a load “"45 a thermo-syphonic means for conducting ade scen'ding current of cold air‘ from saidcoils over of ice carriedytherebyi-to'ithe‘current of cold air .culating air cooled‘ by mamas, said_»-l-conduit “having an opening in its w'a'lllaand a vehicle‘ re to dryrand/or freeze theemoi'sture thereonmsaid :vehicie having a perforatedrbottom forppermit tsaid‘apparatus, said sizing means including ,bins teach tarra-nged ‘ to receive ice 'Ifragmentsof a ting water to drainfrom'wetice carried by the k‘ f‘di?‘erent‘size, slidable gates ,forsaid bins“ a. fan o:c'onne‘cted to said conduit to'draw cold. airuthere vehicle. “from; pipes .leadingfromosaid?fan to said gates, £11. In rcombina'tion, ira 'waiilt “equipped ‘with 'and portsin said pipes‘ for conducting. air under overhead fco'oling coils, af-‘conduiti"-having_~an vipressure against ~the edges of said gates, as‘ and ‘upper: end iri-iproiilniity to-isaid)coilswanduprovim ‘for theypurpose set'forth. ing a path for gravityfi?owlbfsairicobléd bylsaid coils, and a wheeled vehicle having a body with 55 " 16. ‘The combination of a room having means for maintaining a low temperature therein, an a perforated bottom to permit water to drain ice picking and grading machine located in the from ice carried by the vehicle, said conduit hav room, a belt conveyor for elevating broken ice, ing an opening through which the body of the upper and lower pulleys for said conveyor, a fan vehicle removably projects into said path, the edges of said opening ?tting about the vehicle 60 in said room, a passage leading from said fan to a point adjacent the lower pulley and between body, so that a current of cold air passes about said ice and through said perforated bottom. 12. In combination with a room having over head cooling coils, ice picking and sizing ap paratus in said room, said apparatus comprising ice picking means, ice sizing means receiving ice fragments from the picking means and grading the runs of the conveyor, and a port through which air from said passage impinges 0n the pulley, as and for the purpose set forth. 17. In an ice picking and grading machine. ' located in a room having means to maintain a low temperature therein, a belt conveyor for elevating broken ice, upper and lower pulleys for said conveyor, a fan in said room, a conduit closing said apparatus, said conduit extending downward from the region of said coils toward 70 leading from said fan to a point adjacent the said fragments according to size, a conduit en the floor of the room so as to form a thermo lower pulley and between the runs of the con syphonic current of sub-freezing air passing from said coils about said apparatus, said ap veyor, and a port in said conduit through which air from the fan is blown against the lower pulley paratus including an elevating conveyor for carrying ice from said picking means upward 7‘ and adjacent parts of they belt. 18. The combination with a room having over~ _ 325932.151 .12 _, 11 head cooling coils, ice picking and sizing ap Number , paratus in said room, a conduit enclosing said Name Date ' 515,812 523,408 ‘Barr _;__'__,-_..--..'._ Mar. 6, 1894 Robinson -____I_..-__ July 24, 1894 and r'orming a thermosyphonic means for con v530,526 706,197 Holden ___'.._ _____ .. Dec. '11, 1894 Owen ____'_-_, ____ __ Aug. 5, 1902 ' ducting a descending current of cold air from ' 789,628 Rhodes ..___'..______ .._ May 9,1905 said C0115 over said apparatus, said sizing means 824,297 894,425 Hopkins _____ ....‘...... June 26, 1906 Culver. ____ _.,.__....__ Jan. '28, 1908 895,234 945,174 _ 1,107,028 Blakely __..'_ ______ _.. Aug. 4, 1908 Larson ______ _;_____‘ Jan. 4, 1910 Busch __________ __ Aug. 11, 1914 ‘picking and sizing apparatus, said conduit ex tending downward from the region of said coils including bins each arranged to receive ice frag ments of a di?erent size, slidable gates for said ‘bins, a fan connected to said conduit to draw 10 cold air therefrom, pipes leading fromv said fan to said gates, and ports in said pipes for conduct ing air under pressure against the edges of said gates, as and for the purpose set forth. 1 19. A device for'use in a. vault with overhead" cooling coils, comprising means normally expos-" 1 ing ice to room temperature in the vault, a con duit surrounding the space in which ice is nor mally so exposed, said‘conduit extending upward toward said coils to conduit cold air from said ” coils to said ice, the walls of said conduit ?aring" 1,112,464 Miller _____ _.'.'_;_____ Oct. 6, 1914 1,235,027 > Harrison ________ .. July 31, 1917 1,448,508 Thum ..__..__.._____ Mar. 13, 1923 1,562,618 Burch“ __________ .._ Nov. 24. 1925 1,684,716 Seeger ____.'-_..___.. Sept. 18, 1928 1,687,300 1,728,131 'Loizillon __________ __ Oct. 9, 1928 Noecker _.. ..... .._ Sept. 10, 1929 1,780,425 ‘Hull __ __________ __ Nov. 4, 1930 1,788,364 1,793,246 'Gies .__..___.' ________ __ Jan. 6, 1931 Philips __________ _.. Feb. 17, 1931 outward adjacent said coils at an angle of ap proximately 45° so as to embrace a relatively large area adjacent said cooling coils and to 1,913,857 Scherer"____.______ June 13, 1933 1,926,060 Peters_l____;. _____ __ Sept. 12, 1933 1,934,133 Lauderback .._'______ Nov. 11, 1933 conduct cold air to a relatively small area to be g5 1,944,932 Gemeny _' _______ .._ Jan. 30,1934 20. A device for use in a vault having overhead 1,964,822 1,974,113 Klippel ____.....____-- July 3,1934 Kinslow _____>_-...._ Oct. 18,1934 cooling coils, comprising an ice picking and 2,063,771 Taylor .- _________ __ Dec. 8, 1936 2,118,796 tion surrounding the space in which said ma-Dgu 2,133,521 chine is located, said conduit extending upward 2,222,024 toward said coils to conduct cold air from said 2,227,776 2,237,078 coils to said machine, the walls of said conduit ?aring outward adjacent said coils at an angle 2,237,256 vOrrison_'...._. ______ _._ May 1,24,v 1938 Wusow ; ____ _'______ 0ct."_8;1938 . cooled thereby. - a grading machine, a conduit having a lower por Field -_;'.... ______ __ Nov. 19, ‘1940 Anderson .. _______ __ Jan. 7, 1941 ' Lilly ____ _.. _______ __ Apr. 1, 1941 Finnegan ___'____v_.._' Apr. 1, 1941 of approximately 45° so as to embrace a rela-av' 2,246,723 tively large area adjacent said cooling coils and 2,252,101 to conduct cold air to the portion of- smaller 2,259,920 2,264,049 .cross section occupied by said machine. Delivuk,..__' ______ __ June 24, 1941 2,271,436 2,297,604 Lathrop _‘ ________ __ Jan. 27, 1942 Bateman ________ .._ Sept. 22, 1942 2,300,229 Knowles -'._________ Oct. 27, 1942 _ THOMAS F. LILLY. REFERENCES CITED 9” The following references are of record in the ?le of this patent: UNITED STATES PATENTS Number 3,992 " 150,016 263,634 ":45 Name Date " Stoll ____'_ _______ .._ May 24, 1870 Fuller ___________ __ Apr. 21, 1874 ' Webster 1 _______ __ Aug. 29, 1882 317,782 Henderson ______ __ May 12, 1885.90 413,544 v442,765 446,319 Peace __________ __ Oct. 22, 1889 Brennan ________ .. Dec. 16, 1890 Baxter ___________ __ Feb. 2, 1891 485,730 488,760 Abbe _______ _..v.._.___ Nov. 8, 1892 Gates .__'. ________ .... Dec. 27, 1892, 55 Tveter _.....'. ______ .. Aug. 12, 1941 Baer ____'_;__'__-'_‘__ Oct. 21, 1941 Miller _...__..-_-....'..- NOV. 25, 1941 2,312,478 Randolph ____ ._'____._ Mar. 2, 1943 2,323,171 Wayland _.-. ______ .._ June 29, 1943 2,327,226 2,353,909 Taylor __________ __ Aug. 17, 1943 Lager _________ _-__ July 18, 1944 ' Number 613,827 FOREIGN PATENTS Country I Date Germany ________ __ May 25, 1935 OTHER REFERENCES Gifford Wood Bulletin 113, copyright 1938, “Creasy ice breakers," pages 1, 2, 4, 7, 8, and 9. (12 pages with covers.) Copy in Div. 44 in Class 62, Ice Making Publications. '_
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