US1609408A - Automobile radiator core and method of manufacturing the same - Google Patents

Description

- Dec.'7,1926.'

' 1 11,609,408 ;M.HAZEN AUTOMOBILE RADIATOR CORE AND METHOD OF MANUFACTURING THE SAME F lfid A ril 28, 1924 f 11 v Inventor MORRIS HflZEN Patented Dec. 7, 1926.

Moanis HAznn, or CINCINNATI, OHIO.

Application filed April 28, 1924. Serial no. 709,429.

My invention relates to radiator cores patricularly adapted for use 1n connection with 1nternal combustion engines.

Heretofore it has been the practice, in

manufacturing automobile radiator ccres to form sheet material which when out and seamed together comprises a plurality oi tubes adapted when combined with other sections to admit the flow of water thereover and then in forming a fin from a separate sheet of material by a differentoperation and adapted to be inserted between the first said sheet thereby separating the tubes and providing spaces therebetween .for the purpose of permitting circulation of the air through said tubes whereby the temperature of said water is adapted to be lowered.

The objects of my invention are to provide means whereby the construction of ra diator cores isgreatly simplified; to provide means whereby a core is adapted to be manue factured from a plurality of flat pieces of sheet metal, each piece of which is formed by a usual stamping process and comprises a part of said core; to provide a radiator core adapted to be constructed from a plurality of pieces of sheet metal formed simi lar to one another, thereby greatly reducing the cost of manufacturing said core.

My invention consists in forming a plurality of pieces of sheet metal so that when one end of each piece is bent upon one portion of itself and the remaining end is bent upon another portion of itself, a. section is formed comprising a plurality'of tubes in stepped relation to one another and having air passages therethrough and therebetween; and in'providing each section adapted to be connected to adjacent sections to'permit the flow of water over said tubes for the purpose of cooling said water.

My invention further consists in the details of construction. combination, arrange ment and location of parts, as herein set forth and claimed. 7

In the drawing: 1

Fig. 1 is an end elevation showing two sections of my radiator in partly completed assembled position;

Fig. 2 isa perspective view of a plurality of sections of my invention in assembled po' sition' and ready for installation showingthe sections broken away;

- Fig. 3 is a midway vertical cross section 1 of the View shownin Fig.1; a

Fig. 4 is a front elevation of one-half of a single piece of sheet material cut longitudinally after being formed and showing the same broken away and before being bent into proper position for assembling;

Fig. 5 is a cross section taken on a line corresponding to 55 of Fig. l; and

Fig. 6 is a cross section taken on the line corresponding to 6-6 of Fig. 1 after the "sheet material is bent upon itself and ready for being assembled with other similar sections for forming the completed core of a radiator. v

In the preferred construction of my inven tion, I provide sheet 1 having a plurality of stamped ribs or ridges 2 extending transversely of the sheet. Eachrib 2 consists of an intermediate semi-cylindrical portion 3 integral with angular end portions t and re spectively in substantially parallel alinement therewith. Angular portions 4:, re-,

spectively, are adjacent longitudinal edges 5 of sheet 1 and espectively consist of angular sides 6 and 6 respectively having their outer edges connected by integral plates 7 and 8, respectively positioned outwardly from semi-cylindrical portions 3 whereby an air.

space is formed between the respective semi-' cylindrical portions when sheet 1 is bent upon itself with plates 7 in engagement with each other or when plates 7 are in engagement with plates 8, as the case may be.

Plates 8 are positioned a greater distance outwardly from semi-cylindrical portions 3- than are plates 7, thereby providing step 9 having greater depththan step 10 whereby the respective air and water spaces are formed as will be hereinafter explained.

Ribs 2 are arranged in groups 11, 12"and 13. Groups 12 and l3'are spaced apart by integral fiat plate 14: extending the full width of sheet 1 and in parallel relation to plates 7 and 8. i

Groups 11 and 12 are connected by angular plate 15 integrally connectedto one-half portions 16 and 17 respectively, of ribs; 2.

Sheet 1 is'formed, as shown in Figs. land 5, by a usual stamping press and when com pletely formed andben-t twice upon: itself sheet material ispreferably inserted into the press and formed in" one operation, thereby greatly reducing the cost of manufacturing a completed core.

The length of sheet 1 is entirely dependent upon the required capacity and size ot the radiator core desired and the width of the sheet represents the thickness of the com pleted core.

Sheet 1, after being formed, is bent upon itself, as shown in Fig. 6, with the outwardly extending end 19 into engagementwith halfrib 17 thereby providing layers 20 and 21 of section 18 having plates 7 of layer 20 in engagement and registering with plates 7 of layer 21, whereby air spaces 22, as shown in Fig. 3, are formed between semi-cylindrical portions 3, having a width equal to twice the depth of step 10. Plate 1 1 has its central portion bent upon itself forming extension 23 which permits edges 24 and 25 of the plate, respectively, to remain in alinement with plates 8, respectively, of layers 20 and- 21. End 26 ot sheetl is then bent upon layer 21 so that flange 27 fits over and in close engagement with edge 24 of plate 14, and plates 7 are brought into registering engagement with plates 8 whereby air spaces 28 are'tormed. Air spaces 28 have a width, between semi-cylindrical portions 3, equal to the combined depth of steps 9 and 10 for permitting air to circulate from air spaces 29 into air s aaces 22 res ectivel within semicylindrical portions Angular member 15 comprises end 15 of layers 20 and 31 and integral halt ribs 16 and 17, respectively, are arranged in alined relation with plates 8 and 7, respectively, of layers 31 and 20.

Tubes 29 are formed by layers 20 and 21 and tubes 30 are formed by layers 21 and 31. The tubes are at each end of the respective cylindrical portions 3 for forming tubes for engaging angular portions 4, and a water space is formed between the respective semi-cylindrical portions 3 when the contacting angular portions 4 are nested into each other.

Extension 23 of plate 1 1 is bent and soldered into engagement with flange 27 whereby section 18 is completed and ready for being assembled with other similar sections.

Core 18, as shown in Fig. 2, is formed by placing one section 18 in engagement with other similar sections so that ends'15 and plates 1 1, respectively, are in alinement with one another, whereby angular end portions 4 of one-section fit into angular end portions 4 of the adjacent sections and angular sides 6 and 6, respectively, of the engaging angular endportions are parallel with each other. Plates 8 of layer 20, respectively, are in engagement with plates 7 of layer 31 of the adjacent'section', thereby providing water space 32' between the adjoinin sections, as shown in Fig. 3. The-outer ends of tubes 29 andBO of core 18, are secured togetherby suitable mea a y inserting the edges otthe tubes in a bath of solder or other suitable adhesivematerial, whereby the contacting angular portions 4 are sealed and the completed core is securely fastened together.

lVater space 32 has a width equal to the depth of step 9 less the depth of offset 10, which may vary dependent upon the size of the core and the water capacity of the internal combustion engine to which the core is applied.

Slots 33, as shown in Fig. 2, at top 34 01 core 18, are for the purpose of permitting the entrance of water from the usual radiator water reservoir, so that the water may drain downwardly through water spaces 32 and over the exterior surface of tubes 29 and 30 thereby cooling the same, whereby the temperature of the water within the radiator cure, is adapted to be lowered for the reason that the heat of the water is radiated to the tubes and the passage of air through the tubes prevents the temperature of the same from reaching an abnormally high point.

As heretofore explained plates 7 and 8 prevent semi-cylindrical tubes 3 from contacting each other, thereby providing air spaces between the tubcs for the purpose of permitting the tree flow of air between the tubes as well as through them in order that the heat transmitted by the water to the metal in the tubes may be thoroughly radiated and carried from within the core by the. currents of air passing therethrough.

While I have shown the outer portions of tubes 29 and 30 representing a regular polygon and the central port-ions of the tube circular in form, it is merely my preferred con-- struction and I desire to emphasize the fact that the shape of the tubes may be varied to any desired shape for the purpose of accomplishing the desired result.

By forming sheet 1 in one operation, then bending the sheet twice upon itself, then forming extension 23 and bending the same in engagement with flange 27 of the sheet, the complete work of forming section 18 is finished in comparatively a few operations requiring a short period of time, thereby etfecting great economy in the construction of a radiator core having great efliciency.

I may form sections 18 by the method of bending sheet 1 upon itself only once, thereby providing each section with but two thicknesses'of material. whereby water when ad mitted into slots 33 is adapted to flow over the complete outer surface of the tubes, or sheet 1 may be so formed that it may be bent upon itself many more times thanshown in Fig. 6.

An advantage at my invention is that in the course of manufacturing my radiator core, I merelyprovide myself with a pin: rality of fiat pieces of sheet material which are successively inserted has a suitable press and one operation said press is sutficient (a; an)

corporated.

moans to form the use of my invention the cost of manufacturing a radiator core is greatly reduced to such an extent that if an automobile user, having a" radiator of my manufacture, is unfortunate in considerably damaging said core, as bya collision, the same may be removed and a new one completely substituted therefor at' a low cost. In fact, my radiator co're'may be manufactured and sold at such a low price that it will cost considerably more to repair the core, after being damaged by a heavy impact, than it would be to discard the damaged core and substitute therefor a new one of my construction.

It is well known that the high cost of labor enters materially into the manufacturing cost of radiator cores. But by my method of constructing a core I eliminate a considerable part of the usual cost of labor, forthe reason that a single piece of fiat sheet material is formed, by a suitable press, completely and ready for being further formed, assembled and installed with other similarly formed section's, whereby a completed radiator core is quickly and efficiently built to the proper size, depending upon the water 0001- ing'capacity required.

It is apparent that I have invented a simple, efficient and practical radiator core and that each section of the core is formed from a single piece of flat sheet material similar to one another after which the same is bent to a shape as heretofore explained, whereby it is not necessary to manufacture a plurality of dissimilar parts which necessitates the use of various shaped dies and various complicated operations in the usual course of manufacture.

lVhile I have chosen to illustrate the form and structure of my invention by the herein drawings and explanations of the same, I desire to state that the form and the explanations, as relates thereof, are not intended to include the various forms or modification in which my invention may be in- The herein illustrations and explanation are made merely for the purpose of showing one form of construction by which my invention may be carried into eifect.

lVhile I have shown and described a particular construction, such for instance, as a single fiat piece of sheet material being formed and then twice bent upon itself thereby providing three thicknesses of material in a complete section, it is apparent that the number of bends and the number of thicknesses of material attained, is merely a matter of selection.

My inventionresides in the combination and arrangement of parts and the details of construction, as hereinafter claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed Without departing from the spirit of the invention.

Vvhat Iclaim as new and by Letters Patent is: v e

l. A radiator core comprising a plurality of sections, each section comprising a plurality of pairs of alined end tubes and a corrugated portion intermediate said pairs of end tubes, each corrugated portion being offset with respect to the end portions, thereby providing air communicating means between the vertically alined tubes, the walls of one section being adapted to lit in the walls of the adjacent section in spaced apart relation intermediate the ends whereby a water space is formed between said sections.

2. A radiator core comprising a plurality of sections, each section comprising a plurality .of corrugated end portions having ClQSll'G ill) SCCLil'O their intermediate portions offset laterally therefrom and said end portions connected together whereby a plurality of vertically alined tubes are formed for the purpose of providing air spaces between the respective adjacent vertically alined tubes, the, wall of each section being adapted to fit into the wall of an adjacent section whereby a water space is formed between said sections and each of said sections having its end portions adapted to maintain the several layers of said section in close engagement with each other. i

3. A method of manufacturing a radiator core comprising first forming a sheet of metal with a plurality of spaced apart ribs arranged in groups and having a flat plate intermediately connecting two of said groups and having an angular plate integrally connecting two of said groups, each of said ribs comprising angular end por tions having flat tops and a partial-cylindrical portion integrally connected intermediate said angular end portions and stepped therefrom, then bending one end of said sheet in engagement with itself approximately at a point one-third distance from the opposite end of said sheet whereby said flat portions of said angular portions are respectively adapted to engage each other whereby a plurality of tubes are formed having integrally connected intermediate end stepped partial tubes whereby an air space is formed between said partial-cylindrical portions, then bending the remaining end of said sheet around said first end and in engagement with said flat plate, then in securing the outer sides of said polygonal tubes in engagement and fitted into the outer sides of similar tubes alined polygonal of another formed plate, whereby a water space is formed between said formed plates.

4. A radiator core comprising a plurality of sections, each section consisting of a formed plate having transverse spaced corrugations therein, angular portions at each end of said corrugations, a semi-cylindrical portion intermediate said angular portions and having its outer surface out of the plane of said angular portions, said plate adapted to be bent twice upon itself wherebysaid angular portions are respectively adapted to engage and register with respective angular portions whereby air spaces are formed between said semi-cylindrical portions and said angular portions of said section adapted to fit in the respective angular portions of an adjacent section whereby a water space is formed between the adjacent semi-cylindrical portion of said sections.

5. A radiator core comprising a plurality of sections each section consisting of a formed plate having transverse spaced corrugations therein, angular portions at each end of said corrugations, a semi-cylindrical portion intermediate said angular portions and having its outer surface out of the plane of said angular portions, said plate adapted to be bent upon itself whereby said angular portions are respectively adapted to engage and register with said respective angular portions whereby air spaces are formed between said .semi-cylindrical portions and said angular portions of said section adapted to fit in the respective angular portions of an adjacent section whereby a water space is formed between the adjacent semicylindrical portions of said sections.

6. A radiator core comprising a plurality of. sections, each section consisting of a formed plate having transverse spaced corrugations, said plate being provided with end portions and an intermediate port-i011 having its surfaces out of the plane of said end portions, said plate adapted to be bent twice upon itself whereby the respective end portions of the formed section are adapted to engage and register with each other whereby continuous air spaces are formed between said intermediate portions, and said end portions of sail completed section adapted to engage and fit similar end portions of an adjacent section whereby a continuous water space is formed between the adjacent intermediate portions of said sections, respectively.

7. The method of manufacturing a sec ticnal radiator core comprising first forming a single sheet of metal with a plurality of spaced apart transverse corrugations having th ir ridges extending in opposite directions, said corrugations being arranged in groups having an integral part connecting two of said groups and having another integral part connecting two of said groups, each of said groups having its ridges intermediate its ends out of the plane of its end portions, then bending one end group upon the middle group and bending the other end group upon said first mentioned end group whereby a plurality of horizontally disposed air tubes with air passages connecting the respective air tubes, are formed for the passage of continuous sheets of air, thereby permitting the air to freely'circulate from top to bottom, both horizontally and vertically through each section, then assembling said section in engagement with other si1nilar sections and fitting them into the outer sides of similar tubes, whereby a continuous water space is formed between the respective sections, and then suitably securing the free ends of said groups of the several sections.

MORRIS HAZEN.

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