US2664808A

US2664808A - Dining car kitchen ventilating system

Info

Publication number: US2664808A
Application number: US24013A
Authority: US
Inventors: Hartin F Peterson
Original assignee: Pullman-Standard Car Manufacturing Co
Current assignee: Pullman-Standard Car Manufacturing Co
Priority date: 1948-04-29
Filing date: 1948-04-29
Publication date: 1954-01-05
Anticipated expiration: 1971-01-05

Description

Jan. 5, 1954 H. F. PETERSON DINING CAR KITCHEN VENTILATING SYSTEM Filed April 29, 1948 5 Sheets-Sheet l m WWW! jizaewr i. jfersom Jan. 5, 1954 H. F. PETERSON 2,664,803

DINING CAR KITCHEN VENTILATING SYSTEM Filed April 29, 1948 5 Sheets-Sheet 2 In I I Ii .57

56 w I lgllll. J0 i1 6. 1 g lll III r Jan. 5, 1954 H. F. PETERSON 2,664,808

DINING CAR KITCHEN VENTILATING SYSTEM I Filed April 29, 194B 5 Sheets-Sheet 4 y wbfpgferefiord Jan. 5, 1954 H. F. PETERSON 2,664,808

DINING CAR KITCHEN VENTILATING SYSTEM Filed April 29, 1948 5 Sheets-Sheet 5 H w m m .y WWW Patented Jan. 5, 1 954 DINING CAR KITCHEN VENTILATING V SYSTEM Hartin F. Peterson, Chicago, Ill.', assignor to Pullman-Standard Car Manufacturing'Company,

Chicago, 11]., a corporation of Delaware Application April 29, 1948, Serial No. 24,013

This invention relates toa system of ventilation for railway dining car kitchens, adapted to supply fresh air into the kitchen in volume varying in amount in accordance with existing temperatur conditions and in which the volume of air supplied to the kitchen balances with the volume of that exhausted therefrom.

' An object of the invention is to provide a ventilating system for-railway dining car kitchens in which the circulation of air in the car is controlled to insure flowof'air from the dining room into the kitchen at all times, and to prevent infiltrationof air into the dining room containing smoke and cooking odors from the kitchen.

Another object of the invention is to provide a kitchen ventilating system supplying fresh air to the kitchen 'andproviding a curtain of air at the front'of the range which prevents the escap of heat, smoke and fumes emanating from the top of the range into the kitchen and serves to protect the cook standing at-the range therefrom.

A further object of the invention is the provision of a ventilating system for dining car kitchens wherein the fresh air supply is provided with adjustable outlets in'the form of deflectors, which may be individually controlled at th various work positions in the kitchen to direct the flow of air as desired by persons working at the several positions or which may be positioned to shut off the flow of air completely at any one or more of the positions as desired.

A still further object of the invention is the provision of a kitchen ventilating system for dining cars including a duct system of supplying fresh air into the kitchen, with exhaust ventilators for withdrawing hot air, smoke and fumes in excess of the fresh air supplied, whereby to assure a flow of air from the dining room through the kitchen.

Th invention contemplates a ventilating system for dining car kitchens involving the supply of fresh air into the kitchen by means of a blower through a double duct arrangement, including a duct having controllable outlets furnishing air for general cooling purposes and a duct having fixed outlets for directing a curtain of relatively high velocity air downwardly as a shield in the area of the range.

The foregoing and other and more specific objects of the invention are attained by the mechanism and arrangement illustrated in the accompanying drawings, in which Fig. 1 is a general perspective interior view of a kitchen in a railway dining car equipped 9 Claims. (01. 98-10) with the ventilating system of this invention, showing the double duct extending longitudinally of the kitchen, with the lower, relatively shorter duct, having depending fixed outlets in the entire area of the range for directing an air curtain downwardly at the front of the rang and the upper duct provided with a plurality of outlets having individually adjustable deflecting grilles at the side opposite the range for directing controllable cooling drafts in the direction of the various work positions at that side of the kitchen; N

Fig. 2 is a general cross sectional view through the kitchen taken on the line 2-2 of Fig. 4, showing the air supply duct in section and indicating the circulation of air from the two por-' tions of the duct to the various work positions and exhaust air withdrawn by fans in the ceiling and side wall; I

Fig. 3 is a sectional general plan view of the kitchen taken on the line 3--3 of Fig. 2, showing the longitudinal disposition of the fresh air duct substantially midway of the kitchen, with the air supply blower in a chamber at one end drawing air through filters from air inlet openings at the sides of the car and distributing it in the kitchen through the duct, where exhaust air is withdrawn by the exhaust fans;

Fig. 4 is a general longitudinal sectional view through the kitchen taken on the line 44 of Fig. 2, illustrating the disposition of the fresh air duct adjacent the ceiling, with the supply blower therefor located in a chamber over the passageway ceiling where it draws fresh air through the filters from an adjoining chamber communicating with the atmosphere; 7 r

Fig. 5 is a detail side elevational view of the air supply duct to somewhat larger scale, with portions broken away to reveal the division between the upper and lower sections and showing the manner in which the air is channeled into the respective duct sections and ejected through the side wall of one and downwardly from the other; and

Fig. 6 is a detail cross sectional view through the duct to substantially larger scale, taken on the line '6-6 of Fig. 5, illustrating the suspension of the duct from the ceiling of the car and showing the division of the duct into upper and lower sections, with a diffusion chamber in each for equalizing the discharge pressure of the air throughout the length of the respectiv outlet, one of which discharges at one side under control of the adjustable deflectors, and the other discharges downwardly through a nozzle-like .1 outlet forming a continuous sheet of air issuing throughout a major portion of the length of the lower duct section.

The invention proposes to provide a kitchen ventilating system for railway dining cars which increases the efiiciency of the air conditioning in the dining section of the car by theelimination of disagreeable odors, heat or smoke, which might otherwise issue from the kitchen, and improves the comfort conditions of the workers in the kitchen by increased circulation of air in the kitchen under the individual control of the were ers with respect to direction and volume, and by the provision of an air curtain at the front of the range which prevents the escape of heat, smoke and fumes into the kitchen and insures immediate withdrawal thereof by exhaust fans behind the air curtain.

In the drawings, l represents a railway dining car having roof ll, side walls l2 and I3 and a floor I4. Oneof the ends wal1si5 of the car is shownin Figs. 3 and 4. A kitchen it occupies a. space adjacent one end of the car,,.and' a passageway ll isdisposed atone side of the kitchen adjacent to side ,wall [3 and leads from the dining section (not shown), around the kitchen, to the body end door l8 (seeFig. 3) leading'to an adjoining car in a train. A passageway partition l9 defines the width of the passageway and separates it from the kitchen. The partition ii? also defines the width of the kitchen between it and the opposite side wall 12, and the end wall 29 ofthe kitchen 'defines the extent of central passageway 2| communicating with thedoor it at 'the end of the car and connecting with the side, passageway 1'! around an equipment locker 2 2, A storage locker 23 at the opposite side of the doorway [8 from theequipment locker defines the width of the central passageway 2!. The various items of equipment. in the kitchen i6 include a refrigerator 25 which is supplied with ice through a .hatch opening 26 extending from the roof H. The refrigerator isdisposed in the corner of the kitchen formedby the side wall 12 and end wall and extends through the end wall to adjoin the locker 23one side wall of the refrigerator defining the width of the central passageway 2| withthe storage locker. A counter 21 extends along the side wall 12 in the kitchen and contains refrigerated Wells for ice, milk, frozen foods and Dry Ice, drawers for fish and eggs, sinks for dishwashing, vegetable bins, etc. 'Aservice, shelf 28 is disposed above the counter, and adish rack 29 is located above theishelf. ly along the wall l2 above the level of the dish rack. Lighting fixtures 3| on the bottoms of the cabinets light the' various work positions at the counter. At the oppositeside of the kitchen from the counter 21, a steamtable 32 is disposed at the partition wall [9 and contains such items asmeat pans, vegetable jars, a cofiee urn and a carving board atthe front edge of the table.

Next to the steam table, arange 33 is disposed at the wall J9, and upon which all cooking for the dining car is performed. The range containsovens and atop cooking surface, a broiler 35, a hood 34, including warming ovens, and is insulated in the back as at 35 to prevent thetransmission of heat therefrom through, the partition wall to the passageway. The range 33 is connected withsmoke jacks 31 on the roof of the car by means of stacks 3B which provide draftfor the coal-fired range proper and for the charcoal-fired broiler 36, respectively. Charcoal Wall cabinets 39' extend continuous- 4 briquettes for the broiler are stored in bags in the space beneath the broiler in the lower portion of the range, while coal for the firebox of the range is stored in locker 39 at the end of the range, and which is loaded through the roof. The hood 3d of the range is provided with flues 49 extending through the warming oven to permit'withdrawal of heat; fumes and smoke ofi the top of the stove, which otherwise collects under the hood, by means of exhaust fans hereinafter to be described. A linen storage locker 4| is disposed alongside of the locker 39 in the corner of the kitchen formed by the partition wall 19 and the end wall 20. A side loading door 42 (see Fig. 3) is provided in the side wall l2 for provisioning the kitchen with the various supplies needed.

The ventilating system for the kitchen includes the supply of filtered fresh air and an exhaust system for withdrawing hot air, smoke, and fumes, and utilizes conditioned air drawn h u h h k h n rom the d n s tio 9 the car. The exhaust system is designed to balance with thefresh air supply, including that drawn through the kitchen from thedining room, so that the volume of air withdrawn through the exhaust systemis matched in the volume of fresh air available for circulation through the kitchen. The exhaust ventilating y t l e e imoree h u t milato 45 in the ceiling of the kitchenandopening through the roof of the car wherejhey discharge through directional exhaust hoods 46 (see ,2) to a mo her h e a 0 5 a complemented by exhaust fans 41 ;mountedin the side wall I9 of thelkitchen in spaced apart relation over the general area of the range 33 and steam table 32. Thefans 41 also discharge to the atmosphere through ventilator ducts 48 extending over the ceilingrof the "passa eway H to discharge outlets 49 openingthrou'gh the roof at the side of the car.

The arrangement for supplying air to the kitchen includes aduct system of distribution. Fresh air is drawn in byla blowerjlocated overthe passageway ceiling at the, endof the car and blown through the duct to thekitchen, as hereinafter described. The blower 50 driven'by motor 5| is located in a chamber 52 outside the kitchen end wall 29 and over the ceiling of the central passageway 2| .at the end of the car and is suspended from the roof ofthe car by meansof a bracket 53. as'shown in Fig. 4. The chamber. 52 is closed on all sides but one, where openings 54 are provided and in which filters 55 are removably mounted and throughwhich all air entering the system is drawn to be filteredbefore entering the kitchen. Fresh air is taken in from either or both sides of the carthrough inlets 56 (see Fig. 3) which communicate with a chamber 51 from which the air is drawn through the filters. Air passages 58 connect the. inlets 5'6, with the chamber 5'i. A cleanout door 59, hinged to swing downwardly into the passageway 26, is mounted'in the bottom wall of the chamber 51 which comprises the ceiling of the passageway and enables access to the chamber for removal of cinders and dirt and the like which may accumulate there as a result of its direct communication with the atmosphere. Chamber 52 also is provided with a door 69 hinged to swing downwardly and mounted in the passageway ceiling to provide accessto the chamber for servicing.

and maintenance of the blower and motor and replacementof the filters.

The blower 59 discharges into a duct extend- .ing through the kitchen end wall 20, and to which it is connected by a flexible connection 66 which prevents the transmission of vibration into the duct. The duct 65 is disposed longitudinally of the kitchen and is suspended from the ceiling, as best illustrated in Fig. 6, and extends full length of that portion of the kitchen containing the various work positions of the cooks and assistants, and including the full area of the range 33, broilers 36, and steam table 32. The duct includes two separate sections, a lower, relatively shorter section '61, extending only in the area of the range, and a relatively longer section 68, extending at least full length of the working areas referred to.

The upper and lower sections of the duct are separated by a dividing wall 69 which comprises the bottom of the upper section 6% From the blower 50, the duct 65 increases in cross sectional area vertically to the point where it is divided into the upper and lower sections. At this point, an adjustable damper 70, pivotally associated with the dividing wall '69 and operable manually by means of a handle at the outer side of the duct, is disposed within the duct and may be utilized to regulate and apportion the volume of air entering the respective duct sections 6i and 68 from the blower.

The upper duct section 68 discharges laterally at that side away from the range and steam table, in the direction of the various work positions at that side of the kitchen opposite the range and steam table. In order to insure even distribution of the air discharged throughout the length of the duct, a distributor plate H is disposed in the duct in spaced relation above the bottom wall, and containing perforations 12 substantially throughout its area whereby to cause a pressure to be built up in the duct above the plate and create a flow of air through the perforations throughout the length of the duct. To prevent the, building up of greater air pressure in the rear end of the duct and to facilitate the flow of air through the distributor plate at the forward end, deflectors 13 are mounted above the plate to entrain portions of the air entering the upper duct section and direct it through these portions of the distributor plate and thereby assure a more positive and a more uniform distribution of air over the whole length of the upper duct section. The outlets M in the side wall of r the duct are disposed between the bottom wall 69 and the distributor plate H and extend, respectively, full length between upright channelshaped cross members 15 disposed at intervals throughout the length of the upper duct section defining chambers between the distributor plate and bottom wall of the duct section individual to the respective outlets.

The outlet M are individually controllable as to the direction and volume of air issuing there from or they may each be shut on completely, as desired. Louver assemblies "i6, individual to the respective outlets, are mounted'upon the outside wall of the duct in positions to control the openings. The assemblies each comprise two louvers mounted respectively above and below the associated outlet opening H in end members i! for pivotal movement between three positions, as indicated in Fig. 6, and which positions are maintained by bullet type catches 75. As shown, each louver is movable independently between the three positions, so that when the pairs of louvers are disposed as illustrated in full lines in this figure, the air is discharged horizontally into the kitchen, and when they are disposed in the upwardly directed dotted line positions, the air is deflected upwardly, away from the work positions at the counter 21, in the direction of the ceiling to dispel any hot air pockets. When the louvers are turned to the downwardly extending dotted line positions indicated, the air discharged from the duct is directed downwardly to the work positions at the counter. If either the upper or lower louver of any pair is disposed horizontally and the associated louver is turned in opposing relation thereto, the flow of air will be restricted, or if both louvers are disposed in opposing relation, the discharge of air from any one or more of the outlets It may be stopped. The louvers 15 comprise adjustable diffusers adapted to direct the air upwardly, horizontally, or downwardly, and which may be adjusted to restrict or stop the fiow of air from any one or more of the discharge outlets. This provides an arrangement wherein any one or more of the cooks or assistants working in the kitchen may control the circulation of air at their respective positions without interfering with that at the remaining positions. As desired, any individual may shut off the flow of air or diifuse it to another direction without aifecting any of the other positions.

The lower air duct section '51 extends only the length of the range and is utilized solely for the purpose of providing a relatively high velocity curtain of air at the front of the range. For this purpose, this portion of the duct is provided with a depending outlet 86 in the form of an elongated discharge nozzle extending the full length of the range and through which all air supplied by this duct section is emitted into the kitchen. Even discharge pressure of the air issuing from the outlet throughout its extent is obtained by means of a distributor plate 8! mounted in the lower duct section in spaced relation above the bottom wall in a manner similar to that in the upper duct section. The plate 8! contains perforations 82 substantially throughout its area whereby to build up air pressure in the duct above the distributor plate and thereby create an even flow of air through the perforations throughout the full length of the duct, and to prevent the building up of greater air pressure in the rear end of the duct and facilitate air flow through the distributor plate at the forward end, a sloping deflector 83 is mounted in the duct in position to entrain portions of the air entering the lower duct section and direct it through this portion or" the distributor plate to assure a more uniform distribution of air throughout the full length of the lower duct section. The space between the bottom wall of the lower duct section and the distributor plate 8! is divided into a plurality of chambers by one or more channel-shaped cross members 84. The air discharge outlet is provided with separator plates 85 disposed at intervals throughout its length. The air discharged in a continuous sheet throughout the length of this elongated orifice issues in the form of a narrow air curtain at the front of the range and acts as a shield, not only to protect the cook working at the range from the heat, smoke and fumes emanating from the top of the stove, but also to prevent the escape of these elements into the kitchen and insure their direct withdrawal by the exhaust fans. Location of the ventilating duct 65 in the position shown, with its rearinost wall substantially in the plane of the front of the range, facilitates such withdrawal by providing space above the range in which such hot air and fumes might collect for withdrawal by the exhaust fans. End wall plates 86 and 81 (see Fig.

1), disposed respectively at the end of the 'duct 55 and at the forward end of the lower duct section El and coinciding substantially with the ex- :tent of the range and steam table and extending from the duct to the side wall id of the kitchen, act to enclose this space in the formation of a pocket or hooded area over the range steam table in which the exhaust fans ii are mounted.

This ventilating system is designed to provide circulation of air into the kitchen in volumes varying in accordance with existing conditions, and in operation, all of the exhaust fans 2-5 and t! and the blower it are controlled by a single four-position switch to regulate the variable speeds of each in accordance with requirements resulting from the particular conditions existing, whereby to provide roper balance in the circulation of air through the kitchen between that exhausted and that supplied, while thoroughly ventilating the kitchen without affecting the drafts through the. range or broiler to cause backdrafts or smoking. The switch 83 in the four po ltions indicated, selectively control the entire ventilating system-from the full off position to capacity operation of all units. The switch is operated manually, and in the first position all of the blower and units are off.

In order to provide the variable capacities of the system necessary to operation thereof to provide ample ventilation of the kitchen in accordance with the varying conditions encountered, all of the ventilating units may be connected for operation in the remaining three positions of the control switch, as follows: in the second position of the switch, one or both of the exhaust fans l? may be operated to withdraw a predetermined volume of air from the kitchen, which is replaced by air .rawn from the dining section of the car adjoining the kitchen and which is always in open communication with the kitchen, permitting free circulation of air therefrom. The air taken into the kitchen from the dining room is of course in exact proportion to that withdrawn by the fans. Under certain conditions, this volume of relatively cooler air provides sufficient ventilation through the kitchen to maintain a tempered condition of the air in the kitchen, sufficient for comfortable working condition when the outside temperature may be such that the kitchen is only moderately/warm.

When the temperature in the kitchen requires a greater volume of cooling air the switch 88 may be set at the third position, whereupon the blower 50 is operated to supplya predetermined volume of fresh air into the kitchen and the volume of air exhausted by the fans it is increased over that of the number two position of the control switch by an amount corresponding to that supplied by the blower, so that the volume of air drawn into the kitchen from the dining room to supplement the fresh air supply remains constant. The fresh air from the blower enters the kitchen through the duct 65, as hereinbefore described, to supply cooling air in individually controlled amounts to the various work positions and to the high velocity jet forming the air curtain at the range, while the exhaust fans 41 located above the range withdraw the air heated thereby directly before permeating the kitchen, and in the process draw the surface heat and fumes from the range through the flues 40 for discharge to atmosphere, all behind the shield afforded by the air curtain.

"If conditions in the kitchen are such as to warrant operation of the ventilating system at -maximum capacity, the control switch may be set at the fourth position to operate the blower 50 the blower supplies a maximum amount of fresh air into the kitchen, and the exhaust fans 41, running at their highest rate of air movement, exhaust their greatest volume of air from over the range while the exhaust ventilators 45 remove the heated air adjacent the ceiling. The combined volumes of air exhausted by the fans 41 and ventilators 45 exceed the volume of fresh air supplied by the blower 50 through duct 65 by an amount corresponding to that exhausted by the fans ll in the number two setting of the control so that again the volume of air drawn into the kitchen from the dining room remains constant. In this position of the control switch, the volume of air ventilating the kitchen represents the greatest capacities of both the fresh air supply and the exhaust systems, and is ample to provide comfortable working conditions in'the kitchen under the most severe conditions that might be encountered in regard to outside temperatures. lhe fresh air blowing into the kitchen may be directed as desired by the individuals or shut off, but the air curtain at the range is maintained at all times. In all circumstances, the volume of air withdrawn by the exhaust system exceeds the volume of air supplied to the kitchen through the fresh air system by an amount to be drawn into the kitchen from the dining section of the car, whereby to maintain the .flow of air between the dining room and kitchen at all times, from the dining room inward to the kitchen, to prevent the kitchen odors from pervading the air of the dining section.

The kitchen ventilating arrangement herein described provides a system wherein fresh air is supplied in volume sufficient to maintain comfortable working temperatures under all conditions, and which may be regulated and controlled in accordance with the desires of the various individuals working in the kitchen while maintaining a relatively high velocity blanket of .air at the front of the range which acts as a curtain to prevent escape of heat and fumes into the kitchen and shield the cook therefrom as well as providing a cooling draft for the cook, and wherein air is withdrawn from the kitchen over the range and from beneath the ceiling in greater volume than the fresh air supplied, whereby to draw relatively cooler air into the kitchen from an adjoining dining section.

What is claimed is:

1. In a railway dining car having a dining room and a separate kitchen enclosed by walls setting it entirely apart from the dining room, said kitchen having various kitchen appliances at opposite sides including a cooking range at one side and separate facilities at the other side defining work positions, a ventilating system for the kitchen including an air supply blower, an overhead air supply duct extending into the kitchen substantially at the front of said range adapted to deliver air from said blower downwardly in a vertical plane directly adjacent to'a plane coincident with the front of the range, and a plurality of air outlets in a side wall of said duct discharging air across the kitchen to said work positions.

2. In a railway dining car having a kitchen enclosed by walls, said kitchen having various kitchen appliances at opposite sides including a 9 cooking range at one side and separate facilities at the other side defining work positions, a ventilating system for the kitchen including an air supply blower, an overhead air supply duct extending into the kitchen substantially at the front of said range adapted to deliver air from said blower downwardly in a vertical plane directly adjacent to a plane coinciding with the front of the range, a plurality of air outlets in a side wall of .said ductdischarging air across the kitchen to said work positions, and a pair of diffusers disposed respectively above and below each of said outlets adjustable individually to extend upwardly, horizontally, or downwardly to direct the air discharged from each outlet upwardly toward the ceiling, horizontally, or downwardly toward said work positions or to restrict or stop the flow of air from any of the outlets.

3. In a railway dining car having a kitchen containing various kitchen appliances defining work positions ,atopposite sides thereof including a cooking range disposed at one side of the kitchen, a ventilating system for the kitchen including an air supply blower, and a duct extending into the kitchen from the blower for supplying air to the various work positions at opposite sides of the kitchen, an imperforate continuous wall dividing said duct into longitudinally extending sections, an air, outlet in the bottom wall of one section forsupplying air to a work position at the range side of the kitchen, an air outlet in a side wall of the other section for supplying air to one or more work'positions at the other side of the kitchen, and a distributor chamber associated with each of the outlets to equalize the air discharge pressure over the area of the respective outlets, said distributor chambers each being defined by a distributor plate disposed in spaced relation above the bottom wall of the respective duct sections and coextensive at least with said outlets, and openings in said distributor plates for the passage of air from the respective duct sections into said distributor chambers, said side wall outlet being located between the distributor plate and bottom wall of the upper duct section.

4. In a railway dining car having a kitchen containing various kitchen appliances defining work positions at opposite sides thereof including a cooking range disposed at one side of the kitchen, a ventilating system for the kitchen including an air supply blower, and a duct extending into the kitchen from the blower for supplying air to the various work positions at opposite sides of the kitchen, an imperforate continuous wall dividing said duct into upper and lower sections, an air outlet in the bottom wall of the lower section for supplying air to a work position at the range side of the kitchen, an air outlet in a side wall of the upper section for supplying air to one or more work positions at the other side of the kitchen, and a distributor chamber associated with each of the outlets to equalize the air discharge pressure over the area of the respective outlets, said distributor chambers each being defined by a distributor plate disposed in spaced relation above the bottom wall of the respective duct sections and coextensive at least with said outlets, openings in said distributor plates for the passage of air from the respective duct sections into said distributor chambers, said side wall outlet being located between the distributor plate and bottom wall of the upper duct section, and adjustable diffusers disposed respec- 1i) tively above and below said side wall outlet adapted to direct and control the flow of air therefrom.

5. In a railway dining car having a kitchen containing various kitchen appliances defining work positions at opposite sides thereof including a cooking range disposed at one side of the kitchen, a ventilating system for the kitchen including an air supply blower, and a duct extending into the kitchen from the blower for supplying air to the various work positions at opposite sides of the kitchen, an imperior-ate continuous wall dividing said duct into upper and lower sections beyond said blower, an adjustable damper in the duct between the blower and said sections for apportioning the air supplied to the upper and lower duct sections, an air outlet in the bottom wall of the lower section for supplying air to a work position at the range side of the kitchen, an air outlet in a side wall of the upper section for supplying air to one or more work positions at the other side of the kitchen, and a distributor chamber associated with each of the outlets to equalize the air discharge pressure over the area of the respective outlets, said distributor chambers each being defined by a distributor plate dis posed in spaced relation above the bottom wall of the respective duct sections and coextensive at least with said outlets, and openings in said dis-' tributor plates for the passage of air from the respective duct sections into said distributor chambers, said side wall outlet being located between the distributor plateand bottom wall of the upper duct section.

' 6. In a railway dining car having a kitchen in cluding a cooking range disposed at one side of the kitchen and various kitchen facilities at the other side defining work positions, a ventilating system for the kitchen including an air supply blower, and a duct extending into the kitchen from the blower having at least one side wall substantially coinciding with a plane at the front of said range, an air outlet in the bottom wall of the duct for discharging the air downwardly directly adjacent the plane of the front of the range, a plurality of aligned openings in another side wall of said duct providing a substantially continuous outlet discharging air across the kitchen toward said positions, a distributor chamber in the duct adapted to equalize the air discharge pressure over the entire area of said outlet, said chamber being defined by a distributor plate disposed in spaced relation above the bottom wall of the duct and coextensive at least with said outlet, and openings in said distributor plate for the passage of air from the duct into said distributor chamber, said side wall openings being located between said distributor plate and the bottom wall.

7. In a railway dining car having a dining room and a separate kitchen enclosed by walls setting it entirely apart from the dining room, said kitchen having various kitchen appliances at opposite sides including a cooking range at one side and separate facilities at the other side defining work positions, a ventilating system for the kitchen including an air supply blower, an overhead air supply duct extending into the kitchen adapted to deliver air from said blower, an elongated air outlet in the bottom wall of the duct discharging air downwardly substantially at the front of said range, a plurality of aligned air outlets in a side wall of said duct discharging air across the kitchen to said work positions and a dividing wall separating said duct into individual sections supplying said bottom wall outlet and side wall outlets respectively.

8. In a railway dining car having a kitchen containing various kitchen appliances at opposite sides including a cooking range at one side and separate facilities at the other side defining work positions, a ventilating system for the kitchen including an air supply blower and an overhead air supply duct extending into the kitchen adapted to deliver air downwardly at the front of said range and across the kitchen to said work positions adjacent said facilities, said duct having an imperforate continuous wall dividing it into upper and lower duct sections, an air outlet in the bottom wall of the lower section for discharging the air downwardly directly adjacent the plane of the front of said range, and an air outlet in a side wall of the upper section for discharging the air across the kitchen to said work positions, a distributor chamber in each of the duct sections adapted to equalize the air discharge pressure through the entire area of the respective outlets, said distributor chambers each being defined by a distributor plate disposed in spaced relation above the bottom wall of the respective duct sections and coextensive at least with said outlets, and openings in said distributor plates for the passage of air from the respective duct sections into said distributor chambers, said side wall outlet being located between the distributor plate and bottom wall of the upper duct section.

9. In a railway car, a kitchen including a working space, a cooking range disposed in said kitchen at one side of said space, various kitchen appliances disposed in said kitchen at the opposite side of said space and defining work positions in said working space, an air supply blower, an overhead air supply duct extending into the kitchen substantially at the front of the range adapted to deliver air moved by the blower, an air outlet in the bottom wall of the duct through which air is discharged downwardly to the range, and an air outlet in a side wall of the duct exposed in said Working space discharging air across said space to the work positions.

HARTIN F. PETERSON.

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