US1875638A - Radiator - Google Patents

Radiator Download PDF

Info

Publication number
US1875638A
US1875638A US399506A US39950629A US1875638A US 1875638 A US1875638 A US 1875638A US 399506 A US399506 A US 399506A US 39950629 A US39950629 A US 39950629A US 1875638 A US1875638 A US 1875638A
Authority
US
United States
Prior art keywords
hollow
members
air
heat
wall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US399506A
Inventor
Arthur B Modine
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Modine Manufacturing Co
Original Assignee
Modine Manufacturing Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Modine Manufacturing Co filed Critical Modine Manufacturing Co
Priority to US399506A priority Critical patent/US1875638A/en
Application granted granted Critical
Publication of US1875638A publication Critical patent/US1875638A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S165/00Heat exchange
    • Y10S165/327Thermosyphonic having vertical air draft passage
    • Y10S165/328Air draft passage confined entirely or in part by fin structure
    • Y10S165/329Corrugated fin attached to heat transfer surface

Definitions

  • RADIATOR 3 Sheds-Sheet 5 Filed 001.. 14. 1929 YPatented sept. s, 1932 UNITED .STATES PATENT OFFICE ARTHUR B. IODINE, 0F RACIN, WISCONSIN, ASSIGNOR T0, MODIN E MANUFACTURING COIRANY, 0F RACINE, WISCONSIN, A CORPORATION 0F WISCONSIN RADIATOR Application led October 14, 1929. Serial No. 399,506.
  • My invention relates to heat exchange devices and has to do more particularly with devices which are particularly adapted to closure such as a room, or the like, with a.
  • Another object is to provide such a device which may be built up of a. plurality of simi- ⁇ lar units to any desired size depending'uponI the heat requirements of a given situation, and to construct the device so that heating of the room is accomplished by connection and direct contact with the device.
  • VFig. 1 is an elevational view of a heating device embodying my invention mounted in a wall of a room, the wall beingshown fragmentarily;
  • Fig. 2 is a sectional view taken on line 2 2 of Fig. 1;
  • Fig. 3 is a sectional View taken on line 3 3 of Fig. 2;
  • Fig. 4 is a sectional view taken on line 4 4 of Fig. 2;
  • Fig. 5 is an elevational vlew similar to Figs. 1 and 5 and showing still another embodiment of my invention
  • Fig. 6 is a sectional view taken on line 6 6 of Fig. 5;
  • Fig. 7 is a sectional view taken on line 7 7 of Fig. 5;
  • Fig. 8 is a. front 'elevation of another modication of which the invention is susceptible
  • Fig.. 9 is a section taken on line ⁇ 9 9 of Fig. 8;
  • Fig. 10 is a section taken on line '10 10 of Fig. 8. Referring lirst to the embodiment shown .in Figs. 1 to 4, inclusive,I have shown a heating device indicated generally at 10 in Fig. l mounted in a recess 12 formed in a wall 13 of a room and disposed under a window 15. Obviously, the heating' device 10 may be disposed in various other arrangements in thel cilic arrangement.
  • the heating device 10 comprises a plurality of similar units 16, of which three are shown, although it will be readily apparent that any suitable number of units 16 may be mounted in a given installation depending upon the particular heat requirements.
  • Each of the units 16 comprises a hollow leg portion 18 having a front wall 19 and a rear wall 19 and normally disposed with its longitudinal axis in a substantially vertical plane as shown in ⁇ Fig. 2, the leg being in communication with a hollow foot member 20.
  • the foot members 20 comprise a plurality of laterally projecting box-like members 22, having spaces 23 therebetween. Arranged in the spaces 23 between the members 22 are corrugated members 25.
  • These members 25 may be formed of any suitable heat conducting material, such as sheet iron, galvanized iron or the like, and are so bent and arranged as to extend substantially the entire distance wall, and I am not to be limited to any spebetween the members 22 so as to make a good contact therewith at each bend 26 Aand are of sulicient depth to extend substantially from top to bottom thereof. J
  • a conduit 27 is provided for the inlet to the device 10 of heat exchange fluid which fluid is preferably steam although 'hot water may be used, if desired.
  • the conduit 27 comv may be threaded through spiders 36 formed in the cylindrical portion for retaining the units in fixed relation.
  • a plurality of push nipples 44 is provided for effecting fluid tight connections between the various members 16, these push nipples being seated in the ends of the cylindrical portions 33 and 38.
  • a space 45 is preferably provided at the bottom thereof, and another space ⁇ 46 at the top thereof.
  • steam is used as the ⁇ heat exchange iiuid it is preferably introduced through the conduit 27, the condensate draining into the tubular members 38 and passing out of the heating unit through the conduit 30.
  • hot water is used as the heat exchange fluid, it may be intro ⁇ I quizd through either one of the conduits.
  • Y change unit indicated generally at and arranged/in a recess 71 in a wa 172 substantially in the same manner as in the other embodiments.
  • the unit 70 comprises a tank 73 having walls 74 and 74 arranged in substantially a vertical plane and communicating with conduits 7 5 and 76 which may be used as an inlet and outlet respectively for heat exchange fluid.
  • these tubes are preferably U-shaped, the legs of the s being relatively short and the web of the Us being relatively long. Obviously, this shape is preferred merely for the purpose of economy of space and any other suitable configuration may be adopted, 'if desired.
  • the tubes 78 as shown in Fig.
  • tubes 7 are arranged concentrically and may also be arranged in arallel relation, as shown in Fig. 6.
  • nine tubes 78 are utilized.
  • any convenient number may be used, and furthermore the tubes 78 may be disposed in various other arrangements with reference to each other, and the particular arrangement shown is to be considered as only exemplary.
  • a plurality of heat conducting vanes or fins 80 of heat conducting material is provided on the tubes 78 andthese fins may be secured by soldering, welding, or the like.
  • This leg member is formed of a sheet of material bent upon itself having its front face constructed as just referred to and is rovided with a rear wall 84, it being underthis portion is formed are braced or otherwise secured together to form front andrear walls ofthe chamber 85.
  • the chamberf is completed through the agency ofthe end walls 86-86.
  • a fluid supply pipe 87 is connected with the upper end of the chamber and a drain connection 88 is provided which connects with a U- shaped hollow element-89, the opposite ends 90 and 91 of which are connected and communicate with the element having the chamber 85.
  • This U-shaped element is arranged at the lower end of the chamber and by virtue of its U-shaped construction provides a space between a wall ofl the chamber 85 and the connecting passage 92 in which space a plurality of heat exchan e fins 93, 94 and 95 are located. Certain o said fins are connected with the element having the chamber vthe casing.
  • This structure including the chambered element 85 and the Ushaped member 89 is designed to be arranged in a casing 96, the casing and member being disposed relatively to each other to provide a space 97.
  • Heat radiating lins such as 99, 100 and 101 are located in the space 97 provided between the member forming the passage 92 and the wall 98 of Heat radiatinglins 102, 103 and 104 extend from the opposite side o the element providing the passage 92.
  • the U-shaped element 89 and these fins are arranged in the'lower portion of the casing 96 in spaced relation to the lowermost end of the casing and thus air entering the casing at this point passes between and contacts with the tubular passage 89 and said lins is caused to travel upwardly through the casing by convection and escapes from the casing through the opening 105.
  • the casing 96 is provided with a curved wall 106 which is l:soldered or other- Wise secured tofthe rear wall 98 of the casing and is provided with a llange 107 which produces a water containing chamber 108, the latter. of which is closed by a removable cover 109.
  • a damper 110 is arranged in the casing 96 and is provided to permit or prevent the low of air through the chamber between the wall 98 and the wall 84 of the heat exchange device.
  • a substantially vertical tank-like member' elon 3 In a device of the class described, a substantially vertical tank-like member' elon 3. In a device of the class described, a sub-- -stantially vertical tank-like member, a base member communicating with said tank-like member, said base member comprising a plurality of laterally extending spaced hollow members, and heat conducting vanes arranged on said hollow members. y .l
  • a hollow member having an inlet and an outlet, hollow elements which communicate with said lirst mentioned hol low member, said hollow elements being spaced from each other to provide air pasposed along the lower portion .of said hollow member and providing a space above said elements with which said air passages communicate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Central Heating Systems (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)

Description

sept. s, 1932.
'A'. B. MoDlNE RADIATOR Filed bot. 14, 1929 5 Sheets-Sheet A. B. MODINE Sept. 6, 1932.
RADIATOR 3 Sheds-Sheet 5 Filed 001.. 14. 1929 YPatented sept. s, 1932 UNITED .STATES PATENT OFFICE ARTHUR B. IODINE, 0F RACIN, WISCONSIN, ASSIGNOR T0, MODIN E MANUFACTURING COIRANY, 0F RACINE, WISCONSIN, A CORPORATION 0F WISCONSIN RADIATOR Application led October 14, 1929. Serial No. 399,506.
My invention relates to heat exchange devices and has to do more particularly with devices which are particularly adapted to closure such as a room, or the like, with a.
minimum of friction.
Another object is to provide such a device which may be built up of a. plurality of simi-` lar units to any desired size depending'uponI the heat requirements of a given situation, and to construct the device so that heating of the room is accomplished by connection and direct contact with the device. f
Many other objects and advantages of the kind described will be obvious to those skilled in the art from the disclosure herein given. To this end my invention consists in the novel construction, arrangement and combination of parts herein shown and described, and more particularly pointed out in the claims. v
In the drawings, wherein like reference characters indicate like or corresponding parts; i
VFig. 1 is an elevational view of a heating device embodying my invention mounted in a wall of a room, the wall beingshown fragmentarily;
Fig. 2 is a sectional view taken on line 2 2 of Fig. 1;
Fig. 3 is a sectional View taken on line 3 3 of Fig. 2;
Fig. 4 is a sectional view taken on line 4 4 of Fig. 2;
Fig. 5 is an elevational vlew similar to Figs. 1 and 5 and showing still another embodiment of my invention;
Fig. 6 is a sectional view taken on line 6 6 of Fig. 5;
Fig. 7 is a sectional view taken on line 7 7 of Fig. 5;
Fig. 8 is a. front 'elevation of another modication of which the invention is susceptible; Fig.. 9 is a section taken on line `9 9 of Fig. 8; and
Fig. 10 is a section taken on line '10 10 of Fig. 8. Referring lirst to the embodiment shown .in Figs. 1 to 4, inclusive,I have shown a heating device indicated generally at 10 in Fig. l mounted in a recess 12 formed in a wall 13 of a room and disposed under a window 15. Obviously, the heating' device 10 may be disposed in various other arrangements in thel cilic arrangement.
The heating device 10 comprises a plurality of similar units 16, of which three are shown, although it will be readily apparent that any suitable number of units 16 may be mounted in a given installation depending upon the particular heat requirements. Each of the units 16 comprises a hollow leg portion 18 having a front wall 19 and a rear wall 19 and normally disposed with its longitudinal axis in a substantially vertical plane as shown in`Fig. 2, the leg being in communication with a hollow foot member 20. The foot members 20 comprise a plurality of laterally projecting box-like members 22, having spaces 23 therebetween. Arranged in the spaces 23 between the members 22 are corrugated members 25. These members 25 may be formed of any suitable heat conducting material, such as sheet iron, galvanized iron or the like, and are so bent and arranged as to extend substantially the entire distance wall, and I am not to be limited to any spebetween the members 22 so as to make a good contact therewith at each bend 26 Aand are of sulicient depth to extend substantially from top to bottom thereof. J
A conduit 27 is provided for the inlet to the device 10 of heat exchange fluid which fluid is preferably steam although 'hot water may be used, if desired. The conduit 27 comv may be threaded through spiders 36 formed in the cylindrical portion for retaining the units in fixed relation. At the opposite end of the leg members 18 andv communicating therewith, are cylindrical portions 38 which are somewhat depressed from the level of the foot members 20 .so as to serve as drains therefor. Rods 40`extend through the cylindrical portion 38 and are in threaded engagement with spiders 42 formed therein. A plurality of push nipples 44 is provided for effecting fluid tight connections between the various members 16, these push nipples being seated in the ends of the cylindrical portions 33 and 38.
When devices embodying my invention are mounted in a recess of a wall, as shown in Fig. 1, a space 45 is preferably provided at the bottom thereof, and another space`46 at the top thereof. When steam is used as the `heat exchange iiuid it is preferably introduced through the conduit 27, the condensate draining into the tubular members 38 and passing out of the heating unit through the conduit 30. Obviously, if hot water is used as the heat exchange fluid, it may be intro`I duced through either one of the conduits.
When the device has been heated by means of any suitable fluid, air will be induced Vto flow'into the recess 12 of the wall through the space 45 and upwardly through the foot member 20. In 'passing through the spaces 23 between the box-like members 22 of the foot member, the air will be divided into a plurality of columns by means of the corrugated members 25. Inasmuch as the members 25 are of heat conducting material and are in effective contact with the member 22 at a plurality of points 26, they will thus be maintained at substantially the same temperature as the members 22 and hence the air will be very effectivelyA warmed by Contact with the walls of the members 25 as well as.
by the members 22. After passing through the foot like members 20 the air will iiow upwardly through the recess 12 and will pass in P 'stood that the ends of the sheet of which contact withthe surface of the rear wall 19 18, thus effecting a further The air will then flow 46 and out into the room. to the embodiments of a heat exof the leg members heat exchange. through the spa/ce Referring now Figs. 5 to 7, there is shown here Y change unit indicated generally at and arranged/in a recess 71 in a wa 172 substantially in the same manner as in the other embodiments. The unit 70 comprises a tank 73 having walls 74 and 74 arranged in substantially a vertical plane and communicating with conduits 7 5 and 76 which may be used as an inlet and outlet respectively for heat exchange fluid. Adjacent the lower portion 'of the tank 73, so as to extend laterally therefrom and communicating therewith is a pluralityoftubes 78, formed of heat conducting material such as metal. As best shown in- Fig. 7, these tubes are preferably U-shaped, the legs of the s being relatively short and the web of the Us being relatively long. Obviously, this shape is preferred merely for the purpose of economy of space and any other suitable configuration may be adopted, 'if desired. The tubes 78, as shown in Fig. 7 are arranged concentrically and may also be arranged in arallel relation, as shown in Fig. 6. Thus, in the particular embodiment shown, nine tubes 78 are utilized. However, it will be readily apparent that any convenient number may be used, and furthermore the tubes 78 may be disposed in various other arrangements with reference to each other, and the particular arrangement shown is to be considered as only exemplary.
A plurality of heat conducting vanes or fins 80 of heat conducting material is provided on the tubes 78 andthese fins may be secured by soldering, welding, or the like.
When a heat exchange fluid is introduced into the unit 70, a current of air will be induced to enter the recess 71 through the space below the tank 73 and to flow upwardly past the tubes 78. The air will make effective heat exchanging contact with the tubes 78 and with the fins 80 and will then low upwardly through the recess 71 and in y corrugations 83 which will increase'the heating surface presented by this portion of the device and allow for contraction and expansion. This leg member is formed of a sheet of material bent upon itself having its front face constructed as just referred to and is rovided with a rear wall 84, it being underthis portion is formed are braced or otherwise secured together to form front andrear walls ofthe chamber 85. A As clearly shown in Fig. 10, the chamberfis completed through the agency ofthe end walls 86-86. A fluid supply pipe 87 is connected with the upper end of the chamber and a drain connection 88 is provided which connects with a U- shaped hollow element-89, the opposite ends 90 and 91 of which are connected and communicate with the element having the chamber 85. This U-shaped element is arranged at the lower end of the chamber and by virtue of its U-shaped construction provides a space between a wall ofl the chamber 85 and the connecting passage 92 in which space a plurality of heat exchan e fins 93, 94 and 95 are located. Certain o said fins are connected with the element having the chamber vthe casing.
85 whereas others thereof such as '100, 101 and 102 are connected to and project Jfrom the U-shaped member 89. This structure including the chambered element 85 and the Ushaped member 89 is designed to be arranged in a casing 96, the casing and member being disposed relatively to each other to provide a space 97. Heat radiating lins such as 99, 100 and 101 are located in the space 97 provided between the member forming the passage 92 and the wall 98 of Heat radiatinglins 102, 103 and 104 extend from the opposite side o the element providing the passage 92. It will be noted that the U-shaped element 89 and these fins are arranged in the'lower portion of the casing 96 in spaced relation to the lowermost end of the casing and thus air entering the casing at this point passes between and contacts with the tubular passage 89 and said lins is caused to travel upwardly through the casing by convection and escapes from the casing through the opening 105. The casing 96 is provided with a curved wall 106 which is l:soldered or other- Wise secured tofthe rear wall 98 of the casing and is provided with a llange 107 which produces a water containing chamber 108, the latter. of which is closed by a removable cover 109. The water contained in the chamber 108 will become heated, escape from the chamber and act to humidity the air contained in the room in which the heat exchange device is located. A damper 110 is arranged in the casing 96 and is provided to permit or prevent the low of air through the chamber between the wall 98 and the wall 84 of the heat exchange device.
In all of the embodiments shown, it will be readily apparent that a very large area of heating surface is provided for the air, while, at the same time, there is a of friction to impede the ilow thereof. Furthermore, the air is caused to pick up a relatively large amount of heat while llowin through a relatively short distance, that is, through the channels of the member provided adjacent the base of the various disclosed. Due to the expansion thereofthe rate of flow of the air is thus greatly increased, improving the circulation thereof, and hence, its heat exchanging eliiciency. In
` flowing upwardly through the recess it is not permitted to cool-appreciably inasmuch as it is maintained in contactwith the vertical member shown in the various embodiments. The air isthus caused to low out into the room at a relatively high velocity and temperature, Asubstantially none of the heat having been lost before the air enters the room. Y
Having thus described my. invention, it is obvious that various immaterial modications may be made in the samewithout de parting from the spirit of my invention;
hence, I do not wish to be understood as limiting myself to the exact form, construction, arrangement, and combination of parts hereinshown and described or uses mentioned. `What I claim as new and di're to secure by Letters Patent is: Y
1. In a device of the class described, a substantially vertical tank-like member' elon 3. In a device of the class described, a sub-- -stantially vertical tank-like member, a base member communicating with said tank-like member, said base member comprising a plurality of laterally extending spaced hollow members, and heat conducting vanes arranged on said hollow members. y .l
4. In a device of the kind described, the combination of a hollow member having an inlet and an outlet, hollow elements which communicate with said lirst mentioned hol low member, said hollow elements being spaced from each other to provide air pasposed along the lower portion .of said hollow member and providing a space above said elements with which said air passages communicate. z
Y5. In a device of the kind described, the
combination of a hollow member having an Y inlet and an outlet, hollow elements which communicate with said lirst mentioned holg low member, said hollow elements being spaced from each other to provide air passages and said hollow elements being disposed along the lower portion of said hollow member and providing a space above said 'elements with which said air passages'communicate, and heat radiating ns located in said space between said hollow elements.
6. In a device of the kind described, the combination of a hollow member of elongated l cross section having an inlet and an outlet,
hollow elements arranged transversely Yof said lil-st mentioned hollow member which 100 sages and said hollow elements'being dis- 7. In a device of the kind described, the combination of a hollow member elongated in cross section having an inlet and an outlet,
=a hollow element communicating with said (l rst mentioned hollow member, said hollow element projecting from one side of and being disposed along one edge of the hollow member and cooperating with said hollow member to respectively deinea side and end of a space above said element.
8. In a device of the kind described, the
combination of a hollow member elongated in cross section having a fluid inlet and a, fluid outlet, said elongated member having an olfset portion adjacent the lower end thereof and providing hollow laterally projecting elements which communicate with said portion of elongated cross section, said offset portion having passages arranged transversely to said offset portion providing air passages.
In witness whereof, I hereunto subscribe my name this 7th day of October, A. D. 1929.
" ARTHUR B. MODINE.
US399506A 1929-10-14 1929-10-14 Radiator Expired - Lifetime US1875638A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US399506A US1875638A (en) 1929-10-14 1929-10-14 Radiator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US399506A US1875638A (en) 1929-10-14 1929-10-14 Radiator

Publications (1)

Publication Number Publication Date
US1875638A true US1875638A (en) 1932-09-06

Family

ID=23579775

Family Applications (1)

Application Number Title Priority Date Filing Date
US399506A Expired - Lifetime US1875638A (en) 1929-10-14 1929-10-14 Radiator

Country Status (1)

Country Link
US (1) US1875638A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1082721B (en) * 1955-06-14 1960-06-02 Otto Heinz Brandi Dipl Ing Collective heating system with compressed air as a heat carrier
US5325915A (en) * 1993-07-14 1994-07-05 Earl's Supply Co. Modular cooler

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1082721B (en) * 1955-06-14 1960-06-02 Otto Heinz Brandi Dipl Ing Collective heating system with compressed air as a heat carrier
US5325915A (en) * 1993-07-14 1994-07-05 Earl's Supply Co. Modular cooler
WO1995002798A1 (en) * 1993-07-14 1995-01-26 Earl's Supply Company Modular cooler

Similar Documents

Publication Publication Date Title
KR940018630A (en) High temperature regenerator and absorption cold / hot water machine
US2210830A (en) Heating apparatus
US1776080A (en) Radiator
US1875638A (en) Radiator
US2676001A (en) Plate type heat exchange unit providing edge radiation
US1508860A (en) Radiator
US2896591A (en) Furnace wall for forced once-through boiler
US3524500A (en) Heat transmission system
US1790535A (en) Radiator
US1832147A (en) Heat exchange device
US2138091A (en) Heat transferring device
US2918262A (en) Radiators
US2068236A (en) Radiator
US1927079A (en) Heat convector
US3527292A (en) Recirculating thermosyphonic heat exchangers
JPS6130113Y2 (en)
US1810712A (en) Radiator
US3175540A (en) Hot water boiler
US1663301A (en) Radiator
JPS591155Y2 (en) Heat exchanger for bathtub
US1721149A (en) Radiator
US1734956A (en) Radiator
KR920007454Y1 (en) Heat-exchange apparatus
US1868743A (en) Air-heating apparatus
US1914199A (en) Radiator