US1773444A - Snow remover - Google Patents

Description

J. S. BRADY Aug. 19, 1930.

SNOW REMOVER Filed Nov. l0.- 192'7 5 Sheets-Sheet @mi o w Il I IM a... o o M l. mn .1 :WTNLT Hlo ,:5: l Erw@ w f TME? "T U .www 1| {QW} KQ N@ I.. .\M uralNhl w Al l u IH SW 1....@ QFD: N AN J. SBRADY SNOW REMOVER Aug. 19, 1930.

5 Sheets-Sheet 2 Filed Nov. lO. 1927 Bra@ Filed Nov. 1o, 1927 5 sheets-sheet 3 02112 5. ragy v ahorn,

Aug. 19, 1930. I. J. s. BRADY snow REMOVER Filed Nov. 10, 1927 5 Sheets-Sheet 4 llIz S. ntug 4 @Mms yInherited Aug. 1-9, 1930 mim-"FICE YJOHN fs. BRADY, oFhWILKEs-BARRE, PENNSYLVANIA f sNoW ninviovER` 1 l'-Appnca'cion mea November/10,1%?. Serial ivo. fazaaf/` kThis invention relates tov improvements' in SnOWfremQVerS, particularly Vina. snov;7 re.-v moving apparatus adaptedy 'for 'use on oi-dil narystreet thoroughfares, as Well as on steam 5 and electric.railroads.` 1 A An `object of thisinvention is to provide an apparatus Which Willeticiently'removesnovv from streets andrailroads Without the neces sity of llaborious shoveling, thereby eliminat- '10 ing a'very largefeXpense, the apparatus ,be-

ing kconstructed in such a manner that the snort7 may be removed throughthe heating of a box-like structurey upon which the snovs7 v isallovved to accumulateand melt into a kslush or Water, which is thenalloWed to drain from the apparatus. Y e Y kAnother obj-ecto this-invention is to prof vide a snovvrremovingapparatus connected to al vehicle or car which maybe allowed to 2o travel-,at any desired speedand, at the same ``time,functionl to bring the snovvin contact with 'a heated box-likeA structure, producing aslush Water .which Vmay be either allowed to Vdrain readily from a receiving tank onthe vehicle 1n caseofmild Weather, or. mayvberey tained therein during freezing Weather and emptied, When necessary, into a sewerintake ordinarily located. along thei thoroughfare. Naturally, the jvalves may be left fopen in eoumldweather. Y

,- lAffurther objectofthis invention is to providea snow, removing`apparatus having a heated box-like structure upon -Which 'the snow is allowed to accumulate, thefbo`xlike B5 structure being properly balanced and :lo-

` 'cated-above the street'level so'that it `may be raised or loweredavithout undue 4delay in orderto avoid striking'extending obstacles andtheilike. For the purpose'oriaiding in A 40 spreading the'snoW uniformly over the heated boxlil`e structure, y a '-travelling'i conveyor, made up of plates or blades is arranged to kcirculate around theheatedboXlike structure.-y Inlthisfinvention[of a snow remover, the heated 'box-like structureis arrangedfto be practically enclosedbyfa container which is in` opencominunication. With a'tank'orreceivin'g the slush Water resulting from-the y meltinglsnow, therebygmaking it possiblek to '50 retain most of the melting properties of the steam'as itl rises from themelting of thev snow and preventing the. escaping steam-,"forvthe most part, from-ylovving outside ofthe. apparatugm A o y L z f v Another object ofthis invention istoprovide a snow removing apparatus having Ja heated box-like structure Within,v a container and means for heating'the box-liker structure, preferably consisting of blow liames,`applied theretoin a continuous manner through burno i ers attaohed'to thel sides of the boX-like's'truc# ture, each burner being controlledfby'a valve i "any desired type, preferably oval-shaped, Vand Y rnadeflarge in' orderjt'o, drain thetank quickly, if desired.

. lOlnebf the-'prime objects of thiskinvention gto provide*j a snou :-remo'ving apparatus which yWlll, infmlld or-n'onr-reezlng Weather, `When the valves on the tank are left open', for

the'v'v'aterfto run ony the street, talreup and meltfa large amount'oflsnoW,l Whilepin eX- treme cfold org-,freezingvveatlier, When'tlie valves are"closed fand the tanl; has 'to be lemptied at thesevver intake, .the device Will functionfto take upa slightly;` less amount of, snovvi; `'Infthis oneoperation, a vast. volume off-snow will have beenfpickedup, immediately melted, therebybeing reduced greatlyin volume, andthe vvater emptied the street inlets as p the machinegmoves along the thor-y oaierobjectr @reinvention will appear i from the followingdetailedL description of the ,deviceV and as disclosed inthe five n sheets-'of dravv/ingsherewith;madey a part of this applicationfV y. s f. In the,drawings-y pl, n Y, Figure 1f illustratesa siede elevational View vof the snovs7 removing 'apparatus as arranged tofunctionfwithastreetvehicle.-

'zo y Figure 2 illustrates a side el-evational view of the snow scoop with portions broken away in order to disclose the various means for bringing the snow in close contact with the heated box-like structure and conveying it` to a point where it empties into a tank located on the main body of the vehicl-e to which the snow removing device is operably attached.

Figure 3 represents a sectional view of Figure 2 taken along line 3-3 disclosing primarily the location of operating valves in front of the drivers seat, a sectional view of the receiving tank for the slush water and the revolving sweeper in operable relationship with the lower end of the heated boxlike structure for receiving the snow.

Figure l illustrates a sectional view of Figure 1 ytaken along line /1-41- and disclos- I ing the rear end of the tank for receiving the slush water, the drain openings, and Valve for opening or closing the openings. Y

Figure 5 illustrates a top plan view of the heated box-like structure in cooperative relationship with a vehicle and disclosing the means orsupplying blow flames to the boxlike structure, the conveyor for uniformly spreading the snow over the box-like structure and theY actuating means for maintaining motion to the conveyor. I Figure 6 illustrates a sectional view of Figure 2 taken along line 6-6 disclosing primarily locations on each side of the heated `box-like structure through which the blow f ship to the sides ofthe container and the partition within the container. 'l

Figure 8 represents a side' elevational view i Figure 7 showing primarily the side flanges of the heated box-like structure, be-

fore fastening to the sides of the container.

Figure 9 illustrates a sectional view of Figure taken along line 9-9 disclosing the arrangement of driving gear and chains for the rotatable plate conveyor, all in assembled'relationship with a side ot the container and the partition therein.

Figure 10 illustrates a front elevational view to an enlarged scale of one end of a conveyor blade in attached relationship to a chain link of the conveyor. n' A p Figure 11 illustrates an end view of the conveyor blade disclosed in FigureA 10 and shows the method ot attaching the blade to the conveyor chain links. n Figure 12 illustrates a side elevational view of form of vaporizing type of burner for the purpose ot igniting the blow flames Ywithin the heated box-like structure. Y

Figure 13 represents an end view of Figure -12 showing the method offastening the vaporizing burner to the sides of the container. Figure 141 illustrates a side elevational view of the snow remover, according to this invention, in assembled and operative relationship with the-vehicle adapted for use in connection with railroads.

Figure 15 represents a sectional view of Figure 7 taken along line 15-15.

This invention provides a snow removing Vapparatus which may be easily adapted for use either on street thoroughfares or for clearing railroad tracks. Numeral 1 designates the main body portion 'of a truck adapted to be mounted in some suitable manner upon wheels 2 which may be provided preferably witli pneumatic tires 8, or the like, supported upon themain body portion 1 of the truck is a ta'nk 4 arranged s0 that its bottom portion 5 will be-incline'd toward the rear of the vehicle, this'being accomplished by some suitable means, such as a close support 6 and the front end of the base portion 5 of the tank 4 being supported upon a plate structure 7 fastened securely to the main body poi-tion 1 of the truck. The supporting plates 7 may be arranged and fastened to the truck portion l on each side of thefront end thereof in such a manner that they will not only act to support the front end of' tank 4 by means of rivetingthe side plates of the tank 4E to the plates 7, as at 8, but also will function to pivotally support a spindle 9 upon which is adapted to be mounted a lever 10 having slidably arranged thereon a counter-balance weight 11, and levers V12 and 13 adapted for the purpose of raising and lowering the snow reiiiovingapparatus. The free end of lever 14' is provided with an opening 14 for receivingin attached relationship the end of a cable or chain 15, which is adapted to connect withy a windlass Y16 having a handle 17 for the purpose'ot raising or lowering the snow remover apparatus, as may be desired. It is to be understood that any suitable form of balancing and raising or lowering the snow remover apparatus in cooperation with the vehicle may be adapted to this invention. The v :torni disclosed herein calls for the lever elements 10, 12 and 13 being integrally connected together and keyed or otherwise attached to the pivotally arranged spindle 9, it being understood that the counterweight 11 may be adjusted to properly balance the snow removing device so that it may be easily lowered or raised at will. Itis preferred that the free end of the lever arrangement 12 be provided with a roller 18 so that there will be the least possible friction to overcome in the raising of the device.

The forward en d of the tank 4 is pivotally provided on each side with upwardly eXtendlthe snow removing apparatus including a containerportion made ofsuitable material, such as heavy sheet metal or Vthe like,

and being arranged in open connnunicationY at its lower end with the snow to be removed.V e In order to inaintain'eficient and operative relationship with the road surface which is being cleared of snow, suitablerunner elements 23 are bolted to the lower outside edges 24 of the container 22, as clearly disclosed in Figure2. Y y t 'l The drivingmotor 25 for the vehicle is located in some convenient position above the tank A4`and-is adapted to drive :in-the usual manner through gearing 26 the wheels 3 of the vehicle undercontrolfroin the drivers seat 27 The motor 25 is also arranged to drive through suitable gearing 28 and Chain 29, a sprocket gear 30, which is mounted 34 to the chain link elements 35.

and adapted toV extend at its upper end` arcund the spindle 2l` and at its lower end varoundthe spindle 37., the sides of theboxlike structure 38 being adapted to be securely fastened to the side plates ofthe containers 22 and to a partition 39, which extends approximately through the center of the container 22. The lower spindle `37 extends ar ysuiiicient distance on Aeach side of the container 722 toacconimodate a driving gear 40 for he purpose of :driving through a chainl ele- 1nent-4l, a revolvingv sweeper 42 which is inountedupona spindle 43. In order to raise and lower thegsweeper 42 asV may beldesired,

a cable 44 isl attached in somesuitablemannel to the spindlev 43 and extends arounda windlass 45. As clearly disclosed in Figure 7, the container 22 for the heated-*box-likestruc- "ture is provided Awith a partition 39 forythe purpose of 1 strengthening the container, thereby/ making it necessary to provide, in

y each, container a pairl of'conveyor elrrneiitsV Vand heated box-likestructure 36, both Aiden-l ticalinconstruction.

(The intermediate spindle 46 is provided primarily, .for` sup'porting idler` sprocketV wheels47 for the purpose of guiding the drivf ing chains 32 of the conveyor,

It is'conteinplatedin this invention to heat t, the snowbox-like structure'36 by means of .ce

.ceivedlwithin the-box-like structure through Y, burners attached tothe sidesofthe box-likey structure. Any suitable device'may be usedv to. bringthe blow flames into operativerelationshipfwith the snow, removing apparatus,`

blow flames adapted to be continually-rehowever, as a modification ofakineans lfor this purpose.` It is preferred to use any desired number-ofburners, as disclosed at 48, 49, 50-and 5l, `each burner being connectedk in open communication in somesuitable vmanner-as by krflexible pipe lines 52, 53, 54 and 55 'to operatingvalves 56,57, 58 and 59, located for control within `easy access of the'driversseat .27 and in turn connected through asuitablepipe line to an oiltank 61 located preferably at the rear kof the vehicle andas near thegroun-d as possible '1n order tomake itV easy to fill. yThe oil tank 6l is supplied withair underpressure-from a pump 62 loc cated at soin-'e c'onvenientip'oint on the vehicleV through' a line 63 and'jfunctionsto provide the pressure required'for forcing the oil from the tank 6lfinto Qthejburners '48, 49, 50and YIn order the motor onthe vehicleand connected thereto by the usual pipe line ,65, f

It is preferred to use a vaporizer type ofv burner kin connection with thisfinvention requiring butone vpipelineto the gas heating coils, the burners 48, 49, 5()v and 5l are adapted to be inserted through openings 66, 67,`

68 and '.69 {inthe sides of containeri`22- and snow box-like structure `'si-de portions 38 vand securely fastened therein 4as disclosed in Figure 6.

to provide theniotor 25 withV fuel, I `a gasoline tank 64 is locatedconvenient to In order to ignite the blow flame 70, various i devices may be utilized 4without effecting lthe merits of this invention.V However, a type ion f of ignition means may be conveniently used as disclosed'in I1`igures`12 and 13wherein Yoil,k

such as*y Vcoal oil,'may be yforcedby anV air punip ,'62, or `,air compressor, from the.r oil tank 6lk`tov a vaporizing-coil 7l, the 'regulate' ingvalve 72 willjbe opened and the oil 7 3 in `theo"il"1'oan 74 is very conveniently ignited;- k

by hand "orlotherwi'se as it extends partly voutsidekof thecontainer22.v When the oil 73 -ingtliegoil panl74 is ignited, it functions Vto Vheat the vaporizing coil 71, which formsL thejoil intoa gas andl gives a long, strong c "blow flame 70. Whenfthe fianiesy startfto" blow, they will draw ,fresh air through and amoundetheV vaporiZin-g coil-71, thereby providing the required oxygen, Itis to be: understoodY that this isonly one of many de-` vices for` ignitingfthe blow flames, but the-f type havin-g a one-piece vaporizir'ig` burner will accomplish the.Y desired result very [efiiciently, y andare not ,diiiic'ult to'manipulate. rIlhe lugs75attached to thecoil may readily be boltedy tothe sides of the container, thereby providing a strong andsubsta'ntial 'construction andfj easyffor renewal, asl required.`

iis

izo

In Ithev'constructionf ofthe container 22 Vand the-'heatedbox-likestructure sections 36,

it 'is preferred that-the container 22jbe constructed asdisclosedy in `Figure 6 lhaving top and bottom portions made `of suitable kma-f i l, l

terial firmly riveted or otherwise fastened, as at V76, to side plates, thereby forming a boX- like container having a partition 39 therebetween riveted firmly, as at 77 `and 78, to the upper and rlower portions of the container. The heated snow box-like structure sections 36, comprising preferably an upper and lower plate hai/fing turned uprflanges 38 along their longitudinal edges, which are adapted to be securely riveted or otherwise fastened to the container 22, as at 79. AThe upper plate 101 of the container 22 may be detachably connected or fastened securely'to the side-plates of the container' by means of the rivets orV securing elements 76, while the lower plate 102 of the container is adapted to be riveted also to the side of the container bv means of the rivets or fastening elements 76. lt is preferred, in this invention, to provide a hinged extension 103 to the lower end of the upper plate 101 of the container. lllhe plate 103 is primarily a door at the lower end of the container, being formed in a suitable curve and spaced from Vthe lower end of the heated box-like structure 36, and the traveling conveyor blades, the curve being opposite to the direction of the movement of the vehicle so that'its lower end 104': will slide easily over the ground or snow covered surface. Suitable hinges 105 are positioned in such a manner that the door plate 103 may be lowered or raised as desired with little exertion, thereby providing` aclosing plate for the lower end of the container 22, which may be used in caseit is desired to convert the snow removing apparatus into a street'cleaner for taking up dirt or paper and the'like, it being understood that thedoor 103 may easily be thrown back on top of the container 22, thereby making'it possible to admit the snow to the heated box-like structure for the purpose of melting and emptying the slush water into the tank 4 and out of the drain elements 80. n f

A vent of any suitable form may be provided in the heated box-like structure 36,

such as a slot 106, preferably located transversely of the upper end thereof, as clearly disclosed in Figures 7 and 15.- The slot 106 will have primarily two functions, one of them being as a vent for the heat or the flames admitted to the box-like structure 36,

the other function being that of a drip where- Y by the slush water, in flowing over the upper end of the box-like structure 36,V will fail to pass by the slot and drip directly therefrom into the tank 4. y'

The tank a is ladapted to receiveV the slush water traveling from the heated box-like structure 36 and is provided, preferably-near the rear of the vehicle, with a draining valve or device 80, comprising, as clearly disclosed 'n lEigure 4, a metal elbow 81 extending downwardly from the tank l and in open communication therewith. rlhese elbows 81 are pref-1 y ward Vmovement ofthe vehicle.

erably madeof sheet metal, having one endl attached to the bottom` of the tank and the other end having a heavyV convex hose 82 lapped over the elbow 81 and firmly held in connection 'thereto by means of clamping el 'ments 83. The convex hose `portion 82 is arranged to be flattened or closed together by means of lift plates 8d and cooperating members 85 and 86, all functioning to be operated by means of a lifting and lowering gearing 87. Some times, it is'desirable to have kan auxiliary means for directly heating the snow within the container and, for this purpose, an opening may be made in the side of the container for a removable cover portion 10.0, through which the snow may easily be reached. Naturally, it is undesirable in practice to heat the snow directly, owing to the fact that a large amount of steam will arise, however, the opening for cover portion 100 may be utilized at times as an emergency inlet to the container.

A removable cover portion for the container 101 is adapted to be fastened in some suitable manner to, the sides of the container 22.

Figure 14.- represents a modification of this invention disclosing the snow remaver apparatus cooperatively attached to a vehicle or car for the purpose of cleaning electric car or steam railway tracks. lt is prefered, in this Y instance, to install a heated box-like structure and operating features connected thereto on each end of the ca r 88, as clearly disclosed at 89 and 90.

t is preferred in the use of this invention as a snow remover for railroads to vary nearly balance the-device by locating the pivoting point approximately at the center of gravity, as at 91, thereby making it much easier to handle and raise or lower from the railroad bed. rllhe snow box-like structure portion 92 is adapted to be heated through a means similar to that described above, an air pump or compressor 93 being used for forcing the oil from the tank 94 through the pipe lines 95 and 96 to the burners 97, which are ignited in a manner similar to that described above and as disclosed in Figures 12 and 13. The means for draining the slush water from the tank 98 is disclosed at 99 and-functions in a similar' manner to the device described above and disclosed in Figure 4.

ln operation, this snowremoving apparatus provides a device which may be readily utilized for the cleaning of snow from street thoroughfa-res and railroad tracks without the need of shovelin'g.

The snow is adapted to be forced into the lower portion of the container 22 by means of a revolving sweeper 42, aided by the for- In order to assist in uniformly distributing the snow over the heated box-like structure portion 36, a traveling conveyor, comprised of blades or "plates 33 is adapted to revolvearound the` heated' box-like` structure, thereby functioning to vcarry the snow upward along the upper surface of the` boX-like structure.

able valve or outletportion 80 to the sewer or the street gutter, as may be desired.v

Within easy access of the ydriver or operator in the seat 27 are a seriesof controlling valvesfor the blow flames which function to heat the snow box-like structure. for ignitingthe blow flame has been carefully described above and may be of any suitable commercial typ'el The snow box-like structure may be counterbalanced as desired by means of levers and i weights properly located in connection with the vehicle and snow removing apparatus. K- `Afwindlass and crank connected thereto is y located within easy'access of the operator in the drivers seat 27 z for the purpose of raising orr lowering the snow scoop. Likewise,

a hand windlass is available for raising or,v

lowering the revolving sweeper.

Y' vIt is to be understood that substitutions.

and alterations may be made in the above disclosure, both in the drawings and specifications, within the scope of the appended claims, without in any manner effecting the merits of this invention.

What I claim is :V y p l. In an apparatus mounted upon a vehicle for removing snow, acontainer, a box-like structure for receiving snow there-on within the container, a tank on the vehicle for receiving snow and slush water, armotor for driving the vehicle, the one end of the container being in open communication with the tank, the other end-of .the container being open for admitting'the snow oiithe box-like structure, means for heating the box-like structure, a traveling conveyor within .thev container for aiding in distributing snow p.

over the surface of the heated box-like structure. v A v 2. In an apparatus mounted upon a vehicle for removing snow, a container, a box-like structure forreceiving snow thereonwithin the container, a tank on the rvVehicle for receiving snow and slush water, a motor for driving the vehicle, the upper end of the container being inopen communication with the tank, the lower end of the container bei "ing open for admitting the snow on the boxylike structure, means for heating lthe boX- like lstructure, a traveling conveyor within the container for aiding in distributing snow over the surface of the heated box-like structure, a revolving sweeper arranged in operap tive relationship with the lower endk of Athe ycontainer for aiding in forcing the snow ontoL the heated box-like structure.

The snow, including the slush water, will'be delivered. from` the uppermost portion of the heated box-like structure into a tank t located on the-V vehicle and drain therefrom through a suit The means `Onthe vehicle ing snow and slush water, a motor for driv- Y 3. Inan apparatus mountedr upon ka vehicle i for.removing-sno,wa container, a box-like lstructure for receiving `snow thereon within thefcontainena tank on'the vehicle for receiving .snow and slush water, ai motor for driving the vehicle, the upper end of the container being inopen communication with the tank,2 the lower end of the container being .openk for admitting the snow on the box-like structure," means for'iheating theboX-like v. tank, ltheflowenend ofthe' container-being open for Aadmitting the snow on the. box-like structure, means for heating the box-like` structure, the container and rbox-like structure being securely connected' together and 4pivotally' arrangedin relationship rto thetank 5. In an apparatus mounted upon a vehicle foi` removingfsnow, a container, a box-like structure for rreceiving snow thereon within thecontainer, a tank on the vehicle for receiving snow/'landA slush water, a motorwfor Idriving the vehicle, then upper end of `the container being in'open communication with 1 the tank, the lower end of thecontainer beingopen for admit-ting the snow on the boxlikeV structure, means for heating the box-like structure, consisting of suitable burners eX- tendingtherein and operable from the drivers seat of the vehicle through a system offvalves, anoil tank on the vehicle, an air pump for forcingoil to'theburners through 4thefvalves, the .valves and burners beingin open communication with the oil tank, means for igniting a mixture of oil and air within the `vsnow box-like structure.y 1 i y 6, Alfn an-ajpparatus mounted uponv a vehicle for removing snow, a container, a box-like structure for receiving snow thereon within the container, a tank on'the vehicle for receiving the vehicle,lthe upper end of the container being in vopen communicationwith the tank. y the lower end ofthe container being open for admitting the snow on the box-like structure. means for heating the box-like structure, said ycontainer `havi'nggi'neans of access to receive auxiliary means for heating the snow within the container. v i

l7 In kan apparatus mounted upon a vehicle for Lremovingsnow, a container, a box-likey structure for receiving snow thereon-within they container, a tank on the vehicle forreceiving snow andtslush water, a motor for driving the vehicle, the upper end ofthe container beingin yopen communication with the llO 'structure for receiving `snow thereon within the container, atank on the vehicle lfor receiving snow and slush water, a -motor for driving the vehicle, vthe upper end 'of the container being in opencommunication with the tank, the lowerend ofthe-container being open for admitting "the snow on the box-like structure, means for' heating the box-'like structure, a traveling conveyor within the container for aiding in distributing snow over 'thersurface of the heated box-like struclture, a revolving sweeper arranged lin opera tive relationship with the lower Aend of the container lfor aiding in Jorcing 'the Ysnow onto the heated boX-like structure, the container and snow scoop being securely connected together and pivotally arranged ink relationship to the tank 'on the vehicle, means for raising and lowering the box-like struc- 1 ture.

' 9. In an apparatus mounted upon a vehicle `for removing snow, a container, a box-like structure for receiving snow thereon within the container, a tank on the vehicle for receiving snow and slush Water, a motor 'for driving the vehicle, the upper end kof the container being inlopen communication with fthe tank, the lower -endV of the container being vopen Vfor admitting fthe snow on the box-like structure, means for vheating the box-like structure, a traveling conveyor Within the container for aidingin'distributing-snow over the surface o'theheated boX-likestructure, a Irevolving sweeper arranged in Voperative relationship with the lower end of the container V"for aiding in iorcingthe snow onto the heat ed bon-like structure, Vthe container and 'boxlike structure being securely 'connected together and pivotally arranged in relationship to the tank on `the vehicle, means for raising and 'lower-ing the box-like structure, consistof a plurality/of'levers pivotally'arranged vl`n the vehicle and manuallyoperated for `raising yand `lowering the snow removing a=p paratus. ,K

'10.' In an apparatus mountedupon a vehicle for removing snow, a container, a box- @liike structure vvfor receiving 'snow thereonV vwithin the container', a tank on the vehicle 'for receiving ysnow and'slush water, a motor roi-driving `ithe'yeh'iolrn the upperend of the container being 1n iopen communication with the itank,'tlie lower end of the container'being open for admitting the .snow on the boxlike structure, means for heating 'the box-like structure, a traveling conveyor within the container for aiding in distributing snow over the surface of the heated box-like structure, a revolving sweeper arranged in operative relationship with the lower end of the container for aiding in forcing the snow onto .the heated box-like structure, a hanging door ior the lower portion of the container.

In testimony whereof I aiiX my signature.

JOHN S. BRADY.

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