US1602476A

US1602476A - Snow removing and melting apparatus

Info

Publication number: US1602476A
Application number: US7288A
Authority: US
Inventors: Arthur H Ballard
Original assignee: Individual
Current assignee: Individual
Priority date: 1925-02-06
Filing date: 1925-02-06
Publication date: 1926-10-12
Anticipated expiration: 1943-10-12

Description

Oct. 12,1926. 1,602,476 A. H. BALLARD SNOW REMOVING AND MELTING APPARATUS Filed Feb. 6, 1925 3 Sheets-Sheet 1 Oct. 12 1926.

1,602,476 A. H. BALLARD SNOW REMOVING AND MELTING APPARATUS F i led R 1925 3 Sheets-Sheet 2 3 a Oct. 12 1926. 1,602,476

A. H. BALLARD SNOW REMOVING AND MELTING APPARATUS Filed Feb- 6, 1925 :5 Sheefs-Sheet 5 may Patented Oct. 12, 1926.

PATENT OFFICE.

ARTHUR H. BALLARD, 0F BOSTON, MASSACHUSETTS.

SNOW REMOVING AND MELTING APPARATUS.

Application filed February 6', 1925. Serial m. 7,288.

This invention relates to apparatus for removing and melting snow, it eing intended to provide means for removing accumulated snow from the public highway or from other areas and to dispose of the same by meltin through the application of heat in an efiective and cronomical manner.

While the invention may have useful ap plication to other, forms of fuel, it is par ticularly adapted to use with liqu' fuel where an intense heat is created, an provision should be made for usefully applying to the melting of the snow all heat generated by the li uid fuel burner.

The invention wi 1 be best understood by reference to the following description when taken in connection with the accompanying illustration of one specific embodiment thereof, while its scope will be more particu larly pointed out in the appended claims.

In the drawings,

Fig. 1 shows a truck or automotive device equipped with a snow removing conveyor and a snow melting apparatus embodying one form of my invention;

Fig. 2 is a longitudinal sectional elevation with the parts omitted taken through the snow melting apparatus, some of the pipe connections, pumps, etc., being indicated more or less'diagrammatically by dotted lines;

- 3 is a transverse scctionalelevation with parts omittedon line 33 in Fig. 1; and

Fig. 4 is a cross-section through one of the hot water spray pipes in the melting chamber.

Referring to the drawings and to the illust/rated embodiment of the invention therein'shown, the apparatus comprises a snow melting unit b erably supplie by oil or other liquid fuel, is utilized to reduce the snow to liquid and a conveying mechanism by which the snow is conveyed to the melting chamber, both being preferably portable and the conveying mechanism being so -,arranged that it can work progressively along the street or other snow covered area and remove the snow therefrom and convey it to the melting apparatus.

For this purpose the mechanism -is conve'niently mounted on a truck or other selfpropelled automotive device 5 equipped with means of which heat, prefa suitable steering mechanism and the usual power plant which may be used to provide locomotion and also to supply the necessary power for driving the conveyor, pumps or other motor units required for the snow removin and melting apparatus. Since the power p ant may be of any usual or suitable construction and the conveyer pumps and other power driven devices may be connected thereto by simple power take-offs readily understood by those skilled in the art, for the purpose of simplification the details of these drivin devices are not herein shown.

The principal parts .ot the snow melting apparatus are embodied in the structure comprising a cylindrical sheet-metal, boiler-y shaped structure 7 mounted on the body of the truck and including a combustion chamber 9 (Figs. 2 and 3), a meltin chamber 11 and suitable flue passages, to described, above the melting chamber.

Referring more particularly to Figs. 2 and 3, the structure 7 includes an outer shell 13 and an inner shell 15 providing between them a water space or jacket 17, the outer shell being held at suitable intervals by a lattice-like support 19'which rests on the platform 21. The combustion chamber 9" extends the entire length of the structure, occup ing the lower part thereof, and is provided at the forward end with an oil or other liquid fuel burner 23. The latter may be of any desired type, but is referably in the form of a nozzle, to whic oil is supplied under pressure from a supply tank the tank and pump and other usual an well understood burner equipment not bein herein shown. I 0 V he combustion chamber 9 18 separate from the melting chamber 11 by a heat transmission wall 25 which, for the greater part oi'its length, is channeled or corrugated as' shown in Fig.'3 so as to provide a heat transmission wall of greatly expanded area, many times greater than that. of a flat surface, and permitting an efliclent transmission of heat produced. by the mtense combustion of the oil in the combustion chamber 9 to the body of liquid which is maintained in the melting chamber whlle the apparatus is in operation. These channels or corrugations which extend lengthwise the'melting chamber and combustion chamber prevail overthe entire wldth and length of the heat transmission wall except for a short s ace at the front of the apparatus where t e wall is left flat so as to provide a space 27 for free circulation of the liquid from one channel to another.

At the rear end of the combustion chamher the corrugated wall is cut away at each opposite side of the structure to provide flue exit passages 29 for the products of combustion, so that the latter take the path indicated by the arrows (Figs. 2 and 3) and pass upward at the side of the inner shell 15 to an overhead flue passage 31 (Fig. 3) where they enter the rear or horizontal pas sages which are contained within the upper part of the shell and extend longitudinally from the rear to the front at either side thereof. Longitudinal partition walls 33 terminating shortof the front end of the shell are provided in this overhead flue chamber to provide a return flue passage 35 leading to a flue exit 37 at the rear, so that the products of combustion, after escaping from the combustion chamber, pass upward at the rear thereof, thence toward the front, and finally to the rear of the shell before esca ing therefrom, this giving opportunity to a sorb a lar e portion of the excess heat therefrom whic would otherwise be wasted.

When the apparatus .is in operation a bath of liquid is maintained somewhat above the level of the plates 25 by means of one or more suitably located overflow pipes 39 and the chamber is 0 an at each end above the level of the liquld to permit the entrance and passage from front to rear of the melting chamber of one run of the endless conveyor 41. The conveyor, therefore,

asses through a space in the melting chamer which is heated from below through the combustion chamber and from above through the heat radiated from the flue chamber.

The conveyer 41 comprises opposed sprocket chains 43 with connected snow removing and conve 'in plates .45 mounted on the transverse re s 4 carrying' the rollers 49 which are guided by a suitable trackway contained within the connected structure.

shown for this "sprocket wheels 55. :The co'nveyer in enterin the chute 59 passes over the s rocket andfat or near the groudihsurface, is carried over the guiding sprocket wheel 69 near the 0 on end of the chute. At that point the ates in reversing their movement are caused to cooperate with a scraper plate 71 to scrape upand remove the snow from the surface and convey the same up the chute and into the melting chamber as the apparatus is progressively advanced.

The bottom of the chute has a Wheeled support 73 through which it is connected and braced to the frame of the truck by the truss frame 75,-there being preferably provided an. adjustingglcvice 77 by which it may be raised or lowered relatively to the ground. The housings 51 and 61 are so connected to the chute as to permit of necessary adjustment of the latter and also a sli ht tipping adjustment of the melting unit about a horizontal axis to permit the maintenance of a proper working level of the bath in the melting chamber and to hes the heat transmission wall 25 covered wit 1 liquid under varying gradient conditions. For this purpose the middle of the platform 21 has jointed support 79 and the front thereof is supported on jacks 81 operated from a power take oil on the vehicle by means of which the shell can be tipped in one direction or the other to neutralize the efl'ect of different grades.

To utilize in full the h at of the burning fuel,'water from the melting chamber is caused to circulate through the water space about the combustion chamber and thence to be returned to the melting chamber. While this circulation'might be secured by other arrangements and the water thus heated returned directly to the liquid bodyin the melting chamber, herein circulation is provided by water withdrawn through the overflow pipe 39, passed through the water jacket 17, and finally in its heated state discharged in the form of a hot spray against snow carried into the chamber by the conveyer. The arrangement of pipes which controls the distribution of this water is in dicated more or less schematically in Fig. 2.

For thispurpose the overflow pipe 39 is connected to the intakeof a ower driven ump 83 and thereby delivere to the water packet 17 through the discharge pi e 85 and connection 87 to a manifold or hea er 89 extending longitudinally beneath-the shell and having a plurality of connections 91 to the jacket distributed at intervals lengthwise the same so that the water is evenly distributed to all parts of the jacket. The jacket 17 extends entirely around the shell as well .as about the ends thereof. The liquid entering the bottom of the water s ace passes upward through the same absor ing excess heat both from the bottom and sides'of the combustion chamber, as well as from the whee 67, thence down the incline chute flue passages at the top of the shell. At the m charge 85 is also connected to a bpm pipe referably there is provi thence delivered to the top thereof the heated liquid is discharged The pipes 117 and 110, as will be underthrough a discharge manifold or header 98 stood by those skilled in the art, may be similar to the manifold 89 and connected at provided with tperieratione 120 for forming intervals with the water space through the the sprays in me melting chamber. connections 95. Anguiplus hot water from the ump 11:, 10

To limit the pressure which the water ma rechard directlgo to tie llqllld forced into the water 'aclret may exert bat in the me tin?) chem through the u ainet the walls thereo the pump rhspi 121 controlled y the valve 123.

(led a vent pipe 96 leedin to a standpipc 97 the utter carolpen to the atmosphere, such as 124, between 76 ried to a eight preferably lmt alight]; ex- -t1e muinfold 93 and the hot water supply ceeding the height of the manlfol 93. pipe 111 and extended above the manifold Water delivered through the -etandpipe so that only the overflow from the manifold poses down the discharg pi 99 and is can he'drawn out ot the int-hot by the b liquid in the pump 113. no

melting chamber through c connection lOl In the operation of the uHp-uratue, us the where it assists in maintaining a circulation truck is advanced the snow lslozlgcrl b the through the liquid hath. scraper and the cooperative action 0 the The bypass pipe 96 is further connected to conveyer bites is carried up by the latter a. dischargepipe 103 which in turn is conthrough t to chute 50 and the housing 51 and 56 nected to a nozzle or a'aeries of nozzles 105 delivered directly into the melting chamber. and arranged beneath the vehicle to (1 8- There it is dropped into the hot bath maincharge the surplus water forcibly down Into tained over the to of the corrugated or the street and through the pressure thereo clmnnelod bottom, 1e sprays of hot water and the heat contained therein to assist in di h d i t th eonvnyer serving uo washing awe and reducing to peter 88 both to reduce more or less of the snow to possl le of the snow remains bewater and to wash the plates free from all hmd the scraper 7 T B F E 0 h accumulations of snow. The channeled hotwater through the street flushing nozzles tom of the meltin chamber ntlords an im- Prefembly automatically y mensely expundo area of heating surface valve 107 such t all water dlachyreed so um the intense heat of the combustion from the mm: m excess f the caymtp of chamber is effectively transmitted to the h ma d 8 o t e a glp p 9 1B bath, maintaining the latter at a temperadiverted to the flushm nogmles. tare sulllcient to quickly melt the snow after Referring now to t e d scharge of heated th d li th t Th m l d snow :00 water from the dls ha g m m q tha 'delivered to the bath is carried through the latter I8 delivered through the pl 111 1 same until melted, this action beluga assisted l Intake f film p p 1 3 and y B 1 by the movement of the conveyer t to plates w l' 1 podfissure P 9 45 of which a itate the snow, antl thecircu- 115 In dfllwel'flfi Bk to the 8 chlmlation indu in the bath by the ctlcctnof 1 Pmfembl m the form of b 9" the heat, the several sprays, and the water p y g e more yx 1 s 117 from the overflow pipes 101 and 121. W 8 lengthwise g c The overflow pipe 89 maintains tho bath d rec y llmve he conveyor 4 Mi P"! at a substantially content and suitable level P 1 117 grandad h e above the channeled bottom 25 and conducts n rated 7 P We i a portion of the overflow to the jacket 17 thmughout i, P937 where it absorbs excess heat which would shower of hot water 18 b y i ed otherwise be wasted from the sides and hot- P E l 791 P "P tom of the combustion chamber as well as the curled y, 38 fi -P 5 from the sides and top of the flue pameges. 1

free from accumulated sn w and This being delivered back to the melting h lfl M0 ll 'b' g F19 chamber, all possible heat units from the and at theeame t me eflectively redueinl and f l b ti n. a usefully a plied in 191ml i a melting the snow. This is of particular im- If deslred ofl tm eHP mer V rtance-inthe case of a liquid fuel burner .eupphed fr m the: ump 11 h i g wliete the conduction of heat from the sides shown for i aPurpmm mermv and bottom-of the combustion chamber is,

' pipes 119 als n m fi-l l'o bt apt to be very great. While this provides veyer but hoping, to

dehverg pipe 1 1.5 @1 u e d ng e l means to conserve the maximum number of the m ting oh I berxandbeneath e cepheat units'in the fuel, the connection is such t It i 4 8- that eventually all snow reduced to water is rg 0 th t m 1119? Water amped through the street flushing nozzles spray s or =up from belorvlagainnt the fib wuhing and reducing to water more or under Bid? 1 of the conveyor andthe -snow less of the snow remaining in the street. thereon. For the purpose of removing any foreign snow matter that may be carried up into the meltingi chamber, a trap 125 is provided at the en of the melting chamber such that matter of any bulk carried into the chamber by the conveyor will be propelled or worked along through the chamber, up the inclined r" new a, pi

e m w I may p auto dit zically or by opening the hinged door 129. r

To assist in inducing a draft through the combustion chamber to remove the roducts of combustion the discharge end 0 the flue ma be provided with one or more fans 181 which are driven in any suitableway, as by the drive shaft 133 connected to the drive shaft for the conveyer sprocket wheel 57.

While I have herein shown for the purpose of illustration one ecific embodiment of the invention, it is to ennderstood that extensive deviations may be made therefrom and oh in the form and relative arrangement 0? arts maybe had, all without departing 0111 the spirit of the in vention.

Claims:

1. A snow removing and melting apparatus comprising means forming a heating chamber, means forming): melting chamber above the heating chain r, conveyor means travers' the melting chamber to deliver to he melting chamber, and means formin a water space contacting with the sides 0 the beating chamber to receive 11 uid from the mcltin chamber and cheer excess heat from the eating chamber.

2. A snow removin and melting apparatus comprisin' a com ustion chamber having a liquid cl burner, means forming a melting chamber having a vvall heated by the products of combustion, conveyer means traversing the melting chamber for delivering snow to the melting chamber, and means formin a water space communicating with the si es and be m 0f-the combustion chamber to receive liquid from the melting chamber and absorb excess heat from the combustion chamber, said apparatus having rovision for returning the heated water biom the water space to the melting cham- 3. A snow removing and melting apparatus comprising means forming a heating chamber, a liquid fuel burner for said heating chamber, means forming a snow melting space above the heating chamber, snow removing means comprising it conveys;

lll'l traversi said snow meltin s ace, water j eted walls for the eating chambcr 4. A snow removing and melting appara tus having means forming a combustion chamber, means for-min an elongated melting chsmber'mpmted m the combustion chamber by a. wall having an enlarged heat-.

ntopof 'stunti 31 over all ing surface, conduit means for conducting roducts of combustion from said combuson eghtmblelblnd as rated from gaidhlileltmg am r yawn o positesai on heating surface, means ihcluding a conveg oi' traversing the melti chamber for delivern%( snow to the me ting chamber water sc eted walls for the combustion amber, and means for circulating melted snow water -through the jacket space of said walls and discharging said water on the snow in said melting chamber.

5. A snow removing and meltingnpparatus comprising means forming a heatin chamber, said nesting chamber having fu burning means, means formin a meltin chamber in heat transferring re alien to sai heatin chamber, means for delivering snow to sair melting chamber means for automatically maintuini a liquid bath of substnntial depth in sai melting chamber, said bath extending substantially over all the wall separating said melting chamber from the heating chamber, said apparatus having provision for circulating the water from the melting chamber to absorb excess heat from the heatin chamber and return the heated water to i e liquid bath maintained above the heating chamber.

6. A snow removing and melting apparatus comprising means forming a combustion chamber, means forming a meltin" chamber, luwing a generally horizontal we 1 separating it from said combustion chamber, means for delivering snow to said melting chamber means for maintaining a liquid bath in sai mcltin chamber said bath extending sul of said horizontal wall, and means for withdrawing the water from the upper part of the liquid bath and circulating the same to absorb the excess heat from the products of combustion and re turn the heated water to the snow delivered to the melting chamber.

7 A snow removing and melting apparatus comprising means formin a heating chamber, means forming a meltin chamber in heat transferring relation to said heating chamber, a conveyor travers said melting chamber for delivering snow the melting chamber, water circulating means for circulatin water from the melting chamber to absor excess heat from the heating chamber, and means to deliver said heated water to said meltin chamber forcibly in the form of sprays bot from above and below said conve er.

8. snow removing and melting apparatus comprising means forming a heating chamber and a superim d melting chamber separated from other by a wall, means for maintaining in said melting chamher a liquid bath of substantial depth over substantially all of said wall, conveyor means traversing the melting chamber to products of combustion from said heating the conveyor.

deliver the snow to said chamber and agitate the same therein, means for circulating the water from the melting chamber to absorb excessheat from the heatin chamber, and means to return the heater water in the form of a spray forciblydischarged against 9. A snow removing'and melting apparatus comprising means forming a heating chamber, conduit means for conducting the chamber, means forming a melting chamber separating said heating chamber from said conduit means, meansffor conveying snow to said melting chamber including a conveyer traversing said meltin chamber, and water circulating means" or circulating water from the meltin chamber in contact with thewalls of the 1eating chamber for jacketing said walls and returning the water to the melting chamber and spraying it over said convever.

7 10.18. snow removing and melting a paratus comprising meansforming a. com ms tion cham er, a liquid fuel burner for said combustion chamber, flue-exit passages above the combustion chamber, means forming a melting chamber above the combustion chamber means for delivering snow to the melting chamber, said melting, chamber having means adapted automatically to maintain therein water of a substantial depth to form a liquid bath to receive the snow, means forming a water circulating space in contact with both the walls of the combustion chamber and the flue-passa s for absorbing excess heat, and prov sion or returning the heated water from the water circulating gpace to the liquid bath in the melting cham- I i 'i 11. A snow removing and meltin apparatus having means forming a com ustlon chamber, conduit means for conducting the products of combustion from the comgustion chamber, means forming a melting amber between the combustion chamber and conduit means, means for delivering snow to the melting chamber including a conveyor traversing said chamber, means forming a water circulating space in contact ,withthe walls '6Fthe combustion chamber for absorb' excess heat therefrom, and means for withdrawing the water froni the melting chamber,circulating the same throuh the water space, and deliverin it in t e form of a spray to the snow elivered to the melting chamber.

12, Asnow removing and melting apparatus having a. liquid: fuel burner, means forming a combustion chamber, means forming a melting chamber above the combustion chamber, means forming a water circplat ing space exposed to the excess heat of the.

combustion chamber means for withdrawing the water from the' melting chamber and form of a forcible spray to the snow in said circulating the same through the water space, a conveyer passing throu h the melting chamber, and means for de ivering the heated water from said water space in the T0 melting chamber on said conveyer.

13. A'snow removing and meltin apparatus comprising means forming va ieating chamber, means forming a melting chamber in heat transferring relation to said heating chamber,snow delivery means traversing the melting chamber, means forming wall cooling water passages arranged to absorb excess heat from the heating chamber, and means for-circulating water from the melting chamber through said assages and deliverin" the heated water bac to the meltin chamber for discharge against said snow clivery means. 7

4 14. A snow removing and meltiri apparatus comprising means forminga iieatmg chamber, means forming an elongated meltin chamber in heat transferr' relation to said heating chamber, snow elivery and distributing means traversing the melting chamber and means forming water assages arrange to circulate water from t e melting chamber and back again for dischar against said snow delivery means while a sages arranged to absorb excess'heat from the heating chamber and circulate thewater lot from thevmelting chamber and deliver the same with the absorbed heat against the unmelted snow.

16. A snow removing and melting1 apparatus comprising means formin a eating chamber with flue chambers, means forminga melting chamberseparatingesaid heating chamber from said flue cham rs and being in heat transferring relation therewith snow delivery means for the melting chambar including a conveyer for traversing the same, means forming water passages arranged to absorb excess heat from the fines, and means for circulating the water through said passages from the melting chambcr and no discharging it on the snow in the melting chamber. V

1'1. A snow removing and me lting appa ratus. comprising means forming a heating chamber, means forming an elongated melting chamber in heat transferring relation to said heatingchamber, an endless conveyor traversing the melting chamber for deliverin snow totheuneltmg chamber and distr1 uting it therein, means forming wall cooling water assages for absorbin excess ter from said passages and forcing the waheat from the eatmg chamber, an means tel; into the elting chamber at high pressure.

for circulatingrthe water from the melt mg chamber t oug'h said passages and for discharging the heatedwater therefrom on the snow delivered to the melting chamber.

18. A snow removing and melting apparatus comprising means forming a combustion chamber, a flue for conducting the products of combustion from said combustion chamber, means forming an elongated melting chamber with means .for delivering snow thereto and distributing it along the length of the chamber, a heat conducting wall separating said flue from said melting chamber, and means forming aheat conducting wall with an enlarged heating surface separating the combustion chamber from the melting chamber.

19. A snow removing and meltin-gt apparatus comprising means forming a com bustion chamber, means forming an ongated melting chamber with means fo delivering snow thereto and distributing it along the len h of the chamber, means forming an en arged heating surface for the melting chamber comprising a corrugated pr channeled heat conducting bottom wall for the melting chamber separating the latter from said combustion chamber, and a flue for the products of combustion separated from the melting chamber by a heat-conducting top wall for said melting chamber.

20. A snow removing and melting apparatus having means forming a heating chamber, an elongated means forming a melting chamber above the heating chamber in heat transferring relation therewith, an endless conveyer passing through the melting chamber, and a flue chamber connected to the heating chamber and extendingover the conveyer in heat transferring relation to the conveyer.

21. A snow removing and melting apparatus having means forming a heating chamber, means forming an elongated meltting chamber in heat transferring relation to the heating chamber, an endless conveyer for delivering snow to the melting chamber and advancing the snow through the same, and a trap in communication with the end of the melting chamber toward which the conveyer travels to receive from the melting chamber foreign material delivered thereto.

22. Asnow removing and melting apparatus comprising means forming a heating chamber, means forming a melting chamber in heat transferring relation to said heating chamber, means forming water circulating passages exposed to the heat of the heating chamber, means including a pump for withdrawing water from the melting chamber and circulating the same through said passages at low pressure, and means-uncluding a pump for withdrawing heated wa- 23. A snow removing and melting apparatus comprising means forming a heatmg chamber, means. forming a melting chamber, in heat transferring relation to said heating chamber means formin water circulating passages exposed to the eat of the heating chamber, means for, withdrawmg water from the melting chamber and circulating the same through said passages uiider relatively low pressure, an endless conveyer traversing said melting chamber for delivering snow tothe melting chamber, a pump for forcing said heated water under relative- 1y high. pressure into the meltin and delivering the same in the hot water spray by the conveyer. 24. A paratus, comprising means forming a heating chamber, means forming a me] g orm o a against the snow delivered chamber a snow removing and melting apchamber in heat transferring relatioirto said heating chamber, n eans formin ter circulating passages-exposed to the heat of the heating chamber for heating w n in said passages, means for withdraw g water from the melting chamber and circuhating the same through said passages under relatively low ressure, an endless conveyer traversing t e melting chamber for delivering snow to the melting chamber, conduit means including a pump and connections to said'water circulating passages for forcing heatedwater from said water circulating passages into the melting chamber and delivering the same in the form of a hot water spray against the snow delivered by the conveyor and for delivering the heated water both upwardly and downwardly against the conveyer within ,the melting chamber.

25. A snow removing and melting apparatus having means forming a combustion chamber, means forming an elongated melting chamber separated from the combustion chamber by a ting wall having an enlarged area, means for delivering snow to said melting chamber and distributing it along its length, means forming flue passages above the-heating chamber and extending lengthwise thereof, a wall-cooling water space for absorbing excess heat from the combustion chamber and from the flue passages, and a pump for forcing Water from the melting chamber through said water space and utilizing the heated water for assisting in melting the snow.

26. In a snow removing and melting apparatus, the combination with means orming a combustion chamber, of fuel burning means in said chamber, means forming a melting chamber in heat transferring relation to said combustion chamber and with an delivering and distrilniting the snow thereto, and means forming a water jacket su'pplied with water from said melting chamber surrounding-the sides and bottom of the combustion chamber.

27. A snow removing and melting apparatus comprising means forming a heating chamber, means forming an elongated melting chamber in heat transferring relation to said heating chamber, a conveyer traversing the melting chamber for delivering snow to the melting chamber and distributing it therein, a pump for forcing and delivering .water along the length of the melting chamber against the snow delivered by said conveyer, and means for heating the water so delivered from the heating chamber.

28. A snow removing and melting apparatus having means forming a chamber for receiving the snow, means for heating said chamber for melting the snow, means forming a chamber to receive water from the melted snow, a pump for'withdrawing water from the water chamber and forcibly discharging it into the street, and a connection through which said pump diverts a portion of the water and forcibly discharges it against the snow in said first mentioned chamber.

29. A snow removing and melting apparatus comprising a truck, means forming a heating chamber, means forming a melting chamber in which there is maintained a body of melted snow of substantial depth above the heating chamber, and means for adjustably tilting the melting chamber to adapt the level of the Water therein to dif-' fering grades.

In testimony whereof, I have signed my name to this specification.

ARTHUR H. BALLARD.-

endless conveyer traversing the same for delivering and distributing the snow thereto, and means forming a water jacket su'pplied with water from said melting chamber surrounding the sides and bottom of the combustion chamber.

27. A snow removing and melting apparatus comprising means forming a heating chamber, means forming an elongated melting chamber in heat transferring relation to said heating chamber, a conveyer traversing the melting chamber for delivering snow to the melting chamber and distributing it therein, a pump for forcing and delivering. .wateralong the length of the melting chamber against the snow delivered by said conveyer, and means for heating the water so delivered from the heating chamber.

28. A snow removing and melting apparatus having means forming a chamber for receiving the snow, means for heating said a is hereby) certified improvement in tinted specification requiring ore-the word means inserts.

an elo ted means forming a line 72,0 "23 Signed ondsee'ed 'read means chamber for melting the snow, means forming a chamber to receive water from the melted snow, a pump for'withdrawing water from the water chamber and forcibly discharging it into the street, and a connection through which said pump diverts a portion of the water and forcibly discharges it against the snow in said first mentioned chamber.

29. A snow removing and melting apparatus comprising a truck, means forming a heating chamber, means forming a melting chamber in which there is maintained a body of melted snow of substantial depth above the heating chamber, and means for adjustably tilting the melting chamber to adapt the level of the water therein to differing grades.

In testimony whereof, I have signed my name to this specification.

ARTHUR H. BALLARD.

Certificate of Correction. 7

, that in Letters Patent No. 1 ,476, v 1926, upon theagplication of Arthur H. Bslhwd, other! Snow Removing and Meltm Apparatus:

. correction as ale we: Page ,"linecorrections therein A.D.1926. qwu. a Acting of loimtl.

a an in the claim 10, come; page 6, line 86, c 20, forithe words elongated; seme peg? after he word chamber strike out the comma and insert t e 73, same claim and that said that" the some may a a: Qctober 12, usette,-for an Certificate of Correction.

It is hereby certified that in Letters Patent No. 1602,476, ted October 12, 1926', upon theapplication of Arthur H. Ballard, of iloston ehusetts, for an improvement in Snow Removing and Meltin ,Appatat'us, ermrs a pear in the tinted specification requiring, correction as fliows: Page 5,'1ineclaim 10,

fore the word means insert a comma; page 6, line 36, chiim 20, for the words an 0101: ted means forming a 'read means fawning an elongated; some pa line 72, 0 im '23 after the word chamber strike out the comma and insert gi e same to follow after the word chamber in 'line 73, some claimilsnd that Che said Letters Patent should be read with these corrections therein t at the mmsi m,

conform to thereoord of the case in the Patent Oflice.

Signed and sealed this 9th doy of November, A. D, Acting 00mm of Patents.