US1370091A - Apparatus fob bushing pxjlvebized fuel - Google Patents

Description

W. WJCONARD.

APPARATUS FOR BURNING PULvEmZED FUEL.

APPLICATION FILED JULY 15,1916.

EBM/90am.. `\I ATTORNEY W. W. CONARD.

APPARATUS FOBBURNING PULVERIZED FUEL.

APPLICATION FILED JULY 15,1916. 1,870,091 Patented Mar. 1 1921.

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. W/TNESSES: w- WL l W. W. CONARD. APPARATUS FOR BURNING PULVERIZ-D FUEL.

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APPLICATION FILED JULY l5. 1916. 1,370,091.

W/TNESSES: W. 721e- 6 ATTORNEY 'WHG W. W. CONARD.

APPARA'TUS FOR BURNING PULVERIZED FUEL.

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'WINFIELD W. CONARD, OF NORRISTOWN, PENNSYLVANIA.

APPARATUS FOR BURNING PULVERIZED FUEL.

Specification of Letters Patent.

Patented Mar. 1, 1921.

Application led July 15, 1916. Serial No. 109,477.

To all whom if may concern: Be it lrnown that ll. lllinrinnn lsf. Conner), a citizen of the United States, residing at Norristown, in the county of Montgomery and State of Pennsylvania, have invented certain new and useful Improvements in Apparatus for Burning` Pulverized Fuel, of which the following' is a specification.

rlhis invention relates, broadly stated, to apparatus for burning` 'pulverized fuel, such as powdered coal, slack, culin, lignite or Vany ther vlike combustible mattei', in a furnace for the purpose of heating buildings, drivingl machinery, propelling yehicles, locomotives, boats or vessels, developing'power, or for any other purpose for which. a furnace may be used, and the invention has more particular relation to the providinga of such apparatus for use upon an automobile.

The principal object of the present invention resides inthe j aroviding of apparatus for burning. pulverized fuel in which the construction is such that the fuel may be economically burned and in which various cooperating; parts are employed for effectively practising the invention in a commercially valuable manner.

Other and furtherobjects of the invention will be apparentv from the detailed description following. Y Y

The invention consists of the improve ments hereinafter described and finally claimed. y

The nature, characteristic features and scopeof the invention will be more fully understood from the following description taken in connectionv with the accompanying drawings forming part hereof and in'l which:

y Figure l is a top orplan view, somewhat diagrammatic Vin character, of an'automoloile `chassis equippedwith apparatus embodying the invention. j y

lf 19;.2, is an" elevational View, principally in section, of the forward endof the auto- Vmobile. y

3 is a top or plan View of Fig. 2. V Fig. 1l, is a `similar view illustrating a conveyor and pulverizer hereinafter referred to. Y 'l Y lig. 5 is a fragmentary view `in section of the spherical member shown in Fig. 4l.

Fig. 6. is a top or plan view showing more or less diagrammatically a modified form of apparatus embodying; features of the invention` and y Figs". 7 and 8 are fragmentary views illusln Vorder to illustrate the principle of the' invention a construction suitable for automobile use has been shown in the drawings and the following description is therefore restricted to such showing. In the specific instance shown in the drawings the chassisV of the car is designated l0 and may be of any suitable design. Suitably mounted at the front thereof is a combustion chamber 1l constructed of fire brick or other refractory material at one end of which is an opening l2 through which currents of air are introduced. The currents of air carry in suspension particles of pulverized fuel that are introduced into the currents of air from a receptacle 13 of suitable air tight construe tion by means of a conveyer 13 operative within a nozzle 14. This nozzle 14 may be internally providedrwith spiral vanes l to impart a whirling motion to the fuel as fed through said nozzle. One current of air may be produced by a fan 15 or other device for producing a forced draft which fan l5 is located adjacent to the above mentioned conveyor' and nozzle. In addition to the abore mentioned current of air which may be termeda primary air blast; l employ' another current of air which is also introducedthrouggh opening l2. rlhis latter' current of air may be termed a secondary air blast and is produced by a fan 17 shown in front of the combustion chamber 11. 'In order to shorten the time required for combustion and hence keep the volume of the combustion chamber down to a size that may be readily accommodated in a limited space. such as in an automobile chassis, l find it is desirable to heat the air supporting com bustion. By thus heating,y the air l can increase the efficiency of the apparatus. As shown such secondary air current is drawn through the radiator 18 that condenses exhaust steam where it is partially heated and then passes between the flue tubes 19 that carry away from the furnace and boiler 2O the burnt gases resulting from combustion. The secondary air current travels in a reverse direction to that of the passage of burnt gases of combustion so that it becomes hotter as it advances toward opening 12. These flue tubes in practice are so arranged and constructed as to most eiiiciently radiate the heat. After this secondary current of airv passes over the boiler 20, it descends through two large spouts 21-22 one on each side of the boiler which spouts converge at the opening 12 in close proximity to the primary air blast. In some instances, a branch 21 from the above spouts may if desired lead to the fan l5 so as to give hot air for the primary air blast. This latter provision may orv may not be desirable according to the kind' of fuel used. 23 designates a tank for containing petroleum, kerosene, gasolene.

alcohol or any other iniammable liquid or gas, A valved pipe 24- leads from said tank to an vair pipe 25 which in turn leads to an oil burner 26 from a sourceof compressed air contained' for instance in tanks 27. rhe

burner 26 may be ignited by means of a pilot flame, match, torch, or electric spark at which time a valve 28 is opened in the pipe leading from liquid fuel tank to the igniter.

At the same time a valve-29 is opened in the pipe that leadsffrom one of the air 'tanks to an admission end of air engine 30.V This air engine operates fans `15-17--31. The eX- haust from the air engine 30 still at a certain desired pressure above the atmosphere I goes to the oil burner and carries into the combustion chamber Vover the igniter the liquid fuel in the form of a fine spray which is ignited, the air engine actuating the fans creating a draft of air necessary for complete combustion of the liquid fuel. By this means sufficient heat is developed to quickly raise steam. l/Vhen steamis raised, controls operated by either hand levers or foot pedals, shift 'gear wheels 59 and 61, open threeway valve 37 in said pipe 25 so as to make connection between the air engine 30 and the atmospheric air; open throttle valve 32 in steam pipe 64 between the boiler and engine,

and throw in clutch 33. Gear wheels 59 and 61 aresecuredte and rotate in unison with a sleeve 63 and by means vof the above mentioned control, when steam is raised, are shifted so that gear wheel 59 is thrown into mesh with gear wheel and simultaneously y gear wheel 61 is thrown out of mesh with gear wheel 62. Thus the steam engine through ythe belt or endless chain 35, train of gear wheels A and complementa] shafts and pulleys operate the fans 15. 17, 31 and also. as hereinafter described, the pulverizer, mechanical conveyer andv (through the clutch 33) air engine 30, in a reverse direction. The air engine 30 now operates as an air pump for drawing air from the atmosphere in through valve 37 and pumping it into tanks 27 to replenish air pressure therein so that the same may be ready for initial starting of the apparatus or for filling tires with air when desired. 51 designates a cylinder of an automatic cut olf which cylinder has a moving piston therein the pistonrod of which is connected to a link 52 which link in turn is connected to one end of the pivoted arm 53. The opposite end of arm 53 is attached to a collar 54; carrying the clutch fingers of clutch 33. A spiral spring 55 is attached to one side of this collar and bears against the hub of beveled gear wheel 56. A stop-cock 57 may be operated to prevent air leakage when the apparatus is not in use. rl`he above described automatic cut off operates in the following manner: When the steam engine is in operation and air pressure in the tank is below normal, the spring 55 holds the collar 54 up so that the clutch fingers close the clutch 33 and at the same time, through pivoted arms 53 and links 52, the piston in cylinder 51 is held tight up against the opening leading from stop cock 57 to said cylinder. The clutch being closed, the steam engine, as above dcscribed, operates fans, pulverizer and mechanical conveyer and reverses the movementof the air engine so that the latter becomes an air pump. As soon as the air pressure. rises to the safety point in the tanks 27 the piston in cylinder 51 overcomes the resistance Vof spring 55 so that clutch 33 is opened, thus stopping any further rise in pressure in. the air tanks. An independent means of opening the clutch 33 is provided by the prolongation of lever 53 extending to the left of the link 52 so that said lever may be operated by manual control and the clutch 33 opened by hand just prior to the opening of valve 29, when the air engine is first started so as to avoid causing the air engine to operate the steam enginein a reverse direction, or it may be closed by hand when the operation of the steam engine is started as described above. The air engine 30 drives fans 15, 17 and 31, and by means of cogs or bevel gears and shafts, chains or any of the other well known means of transmitting power. I also have in mind as part of the present invention to drive the fans by electric motor 65 fed by current from a storage battery 66 that is kept charged by an electric generator 67. The latter is mounted upon the main engine shaft or may be connected by gear or shafts with said main engine shaft. The electric generator storage battery and motor take the place of the air engine 30 and air tanks 27. With this present arrangement when it is desired to get up steam the valve 28 is opened and the liquid fuel is permitted to pass to the thereof which has been found in practice to Oive satisfactorv and reliable results it is to be understood that the saine is susceptible of modification in various particu` lars Without departing from the spirit or scope of the invention or sacrificing any of its advantages.

1What I claim is:

1. Apparatus of the character stated comprising the combination of a Vboiler including its combustion chamber, means for feeding pulverized fuel to said combustion chamber, a liquid 'fuel device located within the combustion chamber for initially heating the boiler, an air engine and means connecting the exhaust of said engine with the liquid fuel device for effecting a spray of the liquid fuel. i

2. Apparatus of the character stated comv prising the combination of a boiler including its combustion chamber, means for feeding pulverized fuel to said combustion chamber, a liquid fuel device located within the Ycombustion chamber for initially heating the boiler, means for creating a draft through the boiler, means for passing a primary and secondary blast of air to said combustion chamber, an air engine, means connecting the exhaust of said air engine with said liquid fuel device and means connected with said air engine for operating the draft and 'air blast producing means.

3. Apparatus of the character stated embracing aboiler and its complemental jcombustion chamber, means within said chamber for initially heating the boiler, mechanism for conveying pulverized material to the combustion chamber subsequent to the initial heating period, means for commingling with said material al primary and secondary air blast of which the primary blast of air is forced directly to the fuel and ycausedy to commingle therewith and of which the secondary blast of air is first heated vby the products of combustion from said chamber and then caused to commingle with the previously miXed fuel and primary air blast, meansfor operating the air blast means during the initial heating period and independent. means for operating the air blast means during the feeding of pulverized material.

4. VApparatus of the character stated embracing` a boiler and its complemental com- Vbustion chamber, means within said chamber for initially heating the boiler, a source of fuel supply, means for pulverizing said fuel, means forconveying the pulverized fuel to the combustion chamber subsequent to the initial heating period, means for commingling with said material a primary and secondary air blast of which the primary blast of air is forced directly to the fuel and caused to commingle therewith and of which the secondary blast of air is first heated by the products of combustion from said chamber and then caused to commingle with the previously mixed fuel and primary air blast, a medium for ope 'ating said air blast means during an initial heating period and independent means for operating the air blast means and the pulverizer during the feeding` of pulverized material.

5. Apparatus of the character stated embracing a steam boiler including a furnace, means for conveying pulverized fuel into the furnace thereof, mechanism for supplying a primary and secondary air blast to the material as fed to the furnace of which the primary blast of air is forced directly to the fuel and caused to commingle therewith and of which the secondary blast of air is first heated by the products of combustion from said chamber and then caused to commingle with the previously mixed fuel and primary air blast, means operated by compressed air for creating said air blast for a predetermined period, independent means operated by steam from the boiler for creating said air blast and driving the conveying medium the balance of the time and mechanism for 'controlling the operations of thev air and steam connections.

6. Apparatus of the character stated einbracing a steam boiler including a furnace, means for conveying pulverized material into the furnace thereof, air blast supplying mechanism for commingling same with said material, a source of compressed air, an air engine connected therewith for operating the air blast mechanism, steam actuated mechanism connected with the conveying means and mechanism for connecting the steam actuated mechanism with the air engine to reverse its action to that of a pump and simultaneously operate the air blast mechanism and conveying means.

7. Apparatus of the character stated embracing a steam boiler including a furnace, a source of fuel supply, means for pulverizing said fuel, means for conveying the pulverized fuel to the boiler furnace, air blast supplying mechanism for commingling same with said fuel, a source of compressed air, an air engine connected therewith for operating the air blast mechanism, steam actuated mechanism connected with said pulverizing and conveying means and mechanism for connecting the steam actuated mechanism with the air engine to reverse its action to that of a pump and simultaneously operate the air blast mechanism, pulverizing and conveying means.

8. Apparatus of the character stated embracing a steam boiler including a furnace, a source of pulverized fuel supply, means for conveying said fuel to the boiler furnace, mechanism for commingling directly with the fuel a primary blast of air, an air lll) engine for operating said mechanism, a to the fuel as mixed with the primary air source of air supply for operating the enblast. 10 gine, steam actuated mechanism means for In testimony whereof I have hereunto connecting the air engine with the steam ac signed my name.

tuated mechanism to reverse the action of VVINFIELD W. CONARD.

the engine for recharging the source of air Witnesses:

supply and independent means for supply WLLIAM J. JACKSON,

ing a secondary previously heated air blast HELEN M. BYRNE.

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