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Publication numberUS1622498 A
Publication typeGrant
Publication dateMar 29, 1927
Filing dateFeb 24, 1925
Priority dateFeb 24, 1925
Publication numberUS 1622498 A, US 1622498A, US-A-1622498, US1622498 A, US1622498A
InventorsWilliam G Dunn
Original AssigneeWilliam G Dunn
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Vehicle inclosure heating and ventilating means
US 1622498 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

Patented Mar. 29, 1'92/7.



Application led February 24, 1925. Serial No. I11,264.

Since the advent of the closed car, it has become common` practice to install some sort of a heating device whiclrusually utilizes 'the radiated heat on surfaces of the exhaust i manifold for heating air to be supplied to the interior of the vehicle body. No provij sion however has been made, in so far as I am advised, for exhausting any air from rthe interior of the body to cause the hot air to more'rea'dily enter and circulate within such body. Thus, the eliiciency of most heaters is rather low, but it is the object of the present invention to provide a suctionl passage which leads from the interior of the car body to the air intake o f the carbureter, so that the air will be withdrawn from the interior of the body, ythereby greatly facilitating ent-rance of the heated air.v This arrangement also provides for eifective ventilation of the body by withdrawing obnoxious.

gases which may accumulate therein, particularly when the motor is idling. Furthermore, by supplying the carbureter with air from the interior of the body, practically no 5 road dust,and other foreign matter will enter the carbureter and the engine cylinders, with obvious advantages.

It is common practice to utilize a portion yof the exhaust pipe from the manifold or a partof the exhaustmanifold itself, to preheat the air supplied to the carbureter, and it is a further aim of the invention to provide a construction which will permit the continuance of this practice.

It is a still further aim of the invention to provide novel damper means whereby air may be supplied to the carbureter totally from the interior of the body, totally from the exterior of said body. or partly from one 40 source and partly from the other.

Yet another aim is to make provision whereby a back-fire through the carbureter cannot cause the discharge of any lgases into the interior of the body, provision being made whereby such gases are expelled,

Athrough the instrumentality of a pressureopened valve for the carburete'r air intake.

Another aim is to make provision for carrying out the invention in an extremely sim- 5 ple and inexpensive, yet in an efiicient manner, permitting practically any machine to be easily equipped with such invention.

An additional object is to provide an invention which is not restricted to land vehicles for carrying out the above or other'A ob- ]ects, b ut may e used to equal advantage uplon aircraft'or any other type of vehicle w ich 1s propelled by an internal combustion motor and lis closure. A

With the foregoing in view, the invention resides in the novel subject matter hereinafter described and claimed, thedescription bemg supplemented by the accompanying drawing.

Figure 1 isr a-sectional view partly in elevation, showing the application of the int,vention to a well Aknown type of` automobile.

Figure 2 is an enlarged view similar to a p ortlon of Fig. 1, but illustrating the hot gir supplying and exhausting means in sec- 1on. 4 Figures 3, 4 and 5 are detail sectional views as indicated by the lines 3 3, 4-4

and 5-5 of Fig. 2.

In the drawmgs above brieiiy described, one of the many ways of carrying the inv/ention into effect, isillustrated. M designates an internal combustion motor for propllin an automobile, a portion of whose dy 1s indicated atjB. The motor M is of provided with an occupant in-` course provided-with the usilal carbureter C, intake manifold I, exhaust manifold E, and exhaust pipe P. I have illustrated a jacket or hood J ar'ound the exhaust'manifold E, said jacket having a neck N for discharging hot air into the body B, said neck being kcontrolled by a damper D which if desired, may also operateto admit any de- -sired quantity of outside air, through openings O in the neck N. This damper ma be of such form as'tp discharge hot air om the jacket J to the atm here, when it is in position to prevent disc arge of such air into the body.

Within the hood or jacket J, an arched plate A has been shown upon the exhaust I manifold E, said plate having heat radiating fins F, and it will be seen that by providing these fins or some equivalent tins on the exhaust manifold, its efficiency for heating the air passing through the jacket, is increased. I wish it understood however that whiletlie fins are preferably used and the type ofeair heater shown, may well be employed, my invention is not restricted to the use of any particulartype of heater,

means leads in some manner from the in-` terior of the body to the air intake of the carbureter and in the present instance, such means is shown discharging into a branch 3 at the upper side of the pipe 1. It may here be stated however. that instead of using this pipe and its valve 2. other provision fcould well be made for the relief of back- In the construction illustrated, Aan airheating drum 4 is provided around a portion of the exhaust pipe P. said drum being' equipped with an air inlet neck 5 which eX- tends to the interior of the car bodv. said drum having also an air outlet 6 which is connected with the branch 3 of the pipe 1. yIn the preferred form of construction. the

neck 5 has dampered communication with the interior of the car bodv and is also provided with one or more fresh air inlets 7 for admitting the free air at the exterior of said bodv. .said fresh air inlet or 'inlets being also damper-controlled. In the con-l struction illustratcd. several o f the fresh air inlets 7 are shown iu the cvlindrical side wall of the neck 5. while a plurality of air inlet openings 8 are shown in an upper end wall 9 with which the neck 5 is provided. A damper plate 10 operates over the end wall 9 and is provided with openings 11 which may be registered to any desired eX- tent with the openings 8. or moved entirely7 out of register therewith. and movable bodilv with the damper plate 10. is a damper sleeve 1Q which surrounds the neck 5 and is formed with spaced openings 13 which may register totally or partially with the inlets 7. or may be moved entirely out of communication therewith. The damper 10-12 is so constructed that when the openings 8 are entirelv open. the inlets 7 are entirely closed and viceversa. and as the openings 8 are gradually closed. the openings 7 are graduallyT opened. Thus. all air supplied to the carbureter may he taken from the -interior of the hodv. or it inav be taken from the exterior of the body. It will further be noted that some air'mav he taken from the outside of the body and some of it conducted from the in'ide thereof, as occasion may dcmand.

B v providing the construction shown and described or any other preferred construction for obtaining the same results, not only can the occupant-inclosure be more effectively heated, but it is adequately ventilated and practically no foreign matter can enter the carbureter.

AS excellent results may be obtained from the vgeneral construction shown and described, it may well be followed. but obviously a great number of changes may be made within the scope of the invention as claimed. For instance, any desired forni of heater may be used in connection with the air conducting passage from the interior of the occupant-inclosure to the carbureter. or in some instances. the heater may be entirely dispensed with; any desired form of damper may be employed but this is also an ele-.

ment which might in some cases be omitted; a lip 14 hasbeen shown in the pipelto direct back-fire gases away from the branch 3, but other provision could be made for this purpose; and While heat-radiating tins 15 have been shown on theexhaust pipe P, within the drum 4, it will be understood that they are not absolutely essential.

I claim:

1. In a vehicle having an internal combustion motor, an occupant inclosure, a hot air inlet for said inclosure. and means for heating the air entering said hot air inlet; a suction passage leading from said occupant inclosure to the air inlet of the carbureter and embodying an air heater, whereby the suction produced by the motor will induce the heated air to enter the occupant inclosure through said hot. air inlet, Will cause circulation of the heated air in the inclosure to heat the latter, will Withdraw the heated air from the inclosure, and in so withdrawing said air will subject it to the heating action of said air heater, thereby additionally heating the air to insure thorough vaporization of the fuel with which it is mixed by `said carbureter.

2. In a vehicle having an internal co'mbustion motor and an occupant inclosure; a suction passage from said inclosure to the carbureter air intake of the motor, back-fire relief means from said air intake, and means for preventing back-fire fumes from discharging through said passage into the occupant inclosure.

In a vehicle having an internal cornbustion motor, an occupant inclosure, a hot air inlet for said inclosure, and means for heating the air entering said inlet; a suction passage leading to the carbureter air intake of the motor and having one air inlet leading from the interior of the aforesaid inclosure to withdraw air therefrom and induce hot air to enter said inclosure through said hot air inlet for the purpose of heating the inclosure. said suction passage also having another air; inlet leading from the air at the exterior of said inclosure, and damper' means for said inlets of said passage under a common control and operative to'totally or partially close one of said inlets and simultaneously effect total or partial opening of the other inlet, whereby at one operation, both theheating of the occupant inclosure and the temperature of the air entering the carbureter, may be regulated according to the tenlperature outside of said inclosure.

4. In combination with a vehicle 'having an internal combustion motor, an occupant. inclosure. and an exhaust pipe from the niotor extending under a floor board of said occupant inclosure: an air heater surrounding a portion of said exhaust pipe and having an upstanding air inlet neck and a downwardly projecting discharge neck. the latter being connected with the air inlet of the motor carbureter. said air inlet neck having a fresh air inlet in its walland a warm air inlet in its upper end for communication with the interior of the occupant compartment, a damper sleeve rotatably 'surrounding said air inlet neck and having a fresh air inlet for registrationwith the first named fresh air inlet, and a damper plate carried by said sleeve for controlling the additional air linlet at the upper end of said first named nec 5. In a vehicle having an internal combustion motor and an occupant inclosure; an air inlet p1 sure-opened valve, and an air inletpassage joining said pipe between the carbureter and said valve and leading from the interior of said inclosure, said pipe having internal means for directing an outrush of gases away from said air inlet passage.

In testimony whereof I have hereunto allixed my signature.


leading to the carbureter air in-A take an having an outwardly movable pres-

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3083524 *Aug 18, 1960Apr 2, 1963Lillian P DosieFilter for the exhaust gases of internal combustion engines and the like
US3485040 *Jun 17, 1968Dec 23, 1969Axel B NiskanenWater cooled exhaust manifold for internal combustion engines
US3656462 *Oct 7, 1970Apr 18, 1972Ferrall W BaileyGas saving and anti-pollution device
US4285316 *Sep 19, 1979Aug 25, 1981Daimler-Benz AktiengesellschaftFuel system for a motor vehicle
US4562895 *Apr 6, 1984Jan 7, 1986Avl Gesellschaft Fur Verbrennungskraftmaschinen Und MesstechnikMotor vehicle engine cooling arrangement
US6565620Nov 27, 2000May 20, 2003Dana CorporationInternally sourced engine air intake filtration arrangement
US20110201263 *Sep 24, 2009Aug 18, 2011Karthik SrinivasanNatural air ventilation system for a vehicle cab
U.S. Classification123/556, 180/68.2, 55/DIG.280, 137/625.46, 454/141, 237/12.30A, 251/147
International ClassificationB60H1/18
Cooperative ClassificationB60H1/18, Y10S55/28
European ClassificationB60H1/18