US804926A - Radiator. - Google Patents

Description

PATENTED NOV. 21, 1905.

B" BRISGOE.

' RADIATOR.

APPLICATION FILED MAB. s. 1905.

UNITED STATES PATENT OFFICE MANUFACTURING COMPANY, OF DETROIT, MICHIGAN, A CORPORA- TION OF MICHIGAN.

RADIATOR.

Specification of Letters Patent.

Patented NOV. 21. 1905.

Application filed March 8, 1905. Serial N01 249,071.

To ctZZ whom it 114 any concern:

Be it known that I, BENJAMIN BRIsooE, a citizen of the United States, residing at Tarrytown, in the county of Westchester and State of New York, have in vented certain new and useful Improvements in Radiators, of which the following is a specification, reference being had therein to the accompanying drawings.

The invention relates to radiators of that type more particularly designed for use as coolers for a circulating fluid, and especially adapted for motor-vehicles.

The invention consists in the novel construction by which great efficiency is obtained at a minimum cost, as hereinafter set forth.

Figure 1 is a perspective of the completelyformed tube. Fig. 2 is an elevation illustrating the manner of assembling the tubes to form the radiator. Fig. 3 is an elevation, partly in section, of the completed radiator.

Fig. 4. is a section through a portion of the radiator, showing a modified construction.

In the construction of radiators for the purpose described it is very desirable to obtain as much of a radiating-surface as possible within a given area and also to limit the quantity of fluid in proximity to the radiating-surface. Heretofore these results have been obtained in certain constructions of radiators by assembling a large number of tubes in parallel relation and in close proximity to each other, the ends of the-tubes being connected either into perforated headers or joined in some other way. For such constructions drawn tubes are usually employed, and each of these must be closely joined to the adjacent tubesin order to form a tight chamber for the fluid-circulating medium. The latter is forced through the spaces between the tubes, while the tubes themselves are cooled by the air passing longitudinally therethrough. Such constructions are expensive, first, by reason of the cost of the tubing used and, second, on account of the labor and expense of joining the tubes to each other, so as to form a water-tight compartment. Furthermore, if the ple tubes, which are formed from sheet metal. I have further overcome danger of clogging the circulation by providing a uniform spacing of the tubes sufficient to avoid lodging of sediment and have further diminished the labor and difliculty in joining the ends of the tubes. The last two results are obtained by forming the multiple tubes with swaged ends, which are sufficiently enlarged to hold the body portion of the tubes properly spaced when the ends are in close contact. Thus all that is necessary to seal the joints is dipping in solder.

The tubes are formed with a single locked seam-joint, as shown at b in Fig. 1, and are assembled, preferably, by providing a form F of any suitable configuration and then swaging the tubes within the form, as illustrated in Fig. 2, the tubes being all of precisely the same form and of a size than can be assembled in parallel rows, and where the length of these rows is not an exact multiple of the diameter of the tubes the form may be filled either by single tubes H or multiple tubes, such as I, having a lesser number of sections/ When the entire form is filled, the ends of the tubes are dipped into a solder-bath, thus sweating solder into the joints between the enlarged ends it and completely sealing the same.

To complete the radiator, suitable headers, such as J, are connected to the opposite sides of the assembled tubes. These headers are in free communication with the spaces between the tubes, so that the fluid-circulating medium can pass from the header on one side across to the header on the opposite side or may travel over the top to the bottom in a gravity-circulating system. It is to be observed that there is free communication for circulation between the tubes in directions at right angles to each other, and in case of any clogging between tubes of any particular row this will not interfere with the circulation of other tubes in the same row which are connected through the cross-passages with other rows.

Another valuable feature in the construction is due to the fact that the tubes are formed of sheet metal which is malleable, and thus in case the circulating fluid should become frozen they will yield to provide the necessary expansion without breaking the joints.

In Fig. 10 is shown a modification in which the multiple tubes are formed by contracting portions of the metal in the central or body portion of the tubes, so that the enlarged ends are formed without expansion. This is preferably accomplished by forming the dies with corrugations which take up the excess of metal in the central portion of the tube. Thus while the length of contour is the same at the ends as at the center of the tube the space inclosed by the latter is less than that of the former. These corrugationsz'in the tube also facilitate the circulation by providing larger spaces and easier bends for the passage of the water.

I have shown the tubes comprising three units; but it is obvious that there may be a greater or a less number of units in the multiple, if desired, without departing from the scope of my invention.

What I claim as my invention is 1. A radiator, comprising a plurality of assembled multiple-unit tubes, each tube being formed of a sheet-metal blank, having its opposite edges joined to each other and fashioned with opposite Zigzag walls to form a plurality of parallel passages; said units being joined to each other at both ends and spaced to form intervening sealed passages, the passages between adjacent rows of units being cross-connected between individual units, whereby circulation across the radiator is permitted in directions at right angles to each other.

2. A radiator comprising a plurality of assembled multiple-unit tubes the ends of said tubes being enlarged and joined to each other to form sealed fluid-circulating spaces between the tubes.-

3. A radiator, comprising a plurality of as sembled multiple-unit tubes each tube having its ends enlarged, whereby it is uniformly spaced from adjoining tubes to form intervening passages, and theadjoining ends being sealed by soldering.

4:. A radiator, comprising a plurality of assembled multiple-unit tubes, each tube being enlarged at its opposite edges to contact closely with the ends of adjacent tubes, and to provide a uniform space between the intermediate portions thereof, the joint between the ends of said tubes being sealed by soldering.

5. A radiator comprising a plurality of assembled tubes, the ends of said tubes being of greater diameter than the central portion thereof, and the excess of metal in the latter being bent into corrugations, the ends of said tubes being joined to each other to form sealed fluid-circulating spaces between the tubes.

6. A radiator, comprising a plurality of assembled, multiple-unit tubes which abut, being formed from a sheet-metal blank having its opposite ends secured to each other and fashioned into a Zigzag form, the opposite ends of said tube being of greater diameter than its central portion, and the central portion being corrugated to take up the excess of metal, the ends of said units being joined to each other to form sealed spaces therebetween.

In testimony whereof I aifix my signature in presence of two witnesses.

BENJAMIN BRISCOE.

Witnesses:

JAs. P. BARRY, AMELIA VVILLIAMs.

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