US1575915A - Radiator - Google Patents

Description

March 9 192e. 1,575,915

A. H, HART RADIATOR Original Filed May l, 1922 2 Sheets-Sheet l *TESL Y A TEEL gnou/1to1:

usfn, H. Ham l: @3135@ @Home/1g A M A- H. HART RADIATOR March 9 ,'1926,

2 Sheets sheet 2 0 g-FgE/lv 1 1922 mi um um nu @UME - i@ DI@ Patented Mar. 9, 1926.

UNITED STATES PATENT 'oFF-lcs.

AUSTIN H. HART, F MONTCLAIR, NEW JERSEY, ASSIGNOR, BY MESNE ASSIGNMENTS,

TO ROME RADIATION COMPANY, INC., A CORPORATION OF NEW YORK. l

RADIATOR.

Application led May 1, 1922, Serial No. 557,742. Renewed January 30, 1926'.

To all whom t may concer/n.'

Be it known that I, AUSTIN H. HART,

a citizenl of the United States, residing at Montclair, in the county of Essex and State of New Jersey, have invented new and useful improvements in Radiators, of which the following is a specification.

My invention relates to heating devices and more particularlyto methods for pro- 1@ ducing radiators .by electro] tic process, and

the product thereof. An o ject of my improved process is to produce a device of the class described more economically than heretofore, the product itself being of a superior quality than has been possible of attainment by methods heretofore practiced in this art.

The radiator produced by my process in its preferred form comprises a network of open chambers or tubes constituting a continuous single chamber characterized by numerous angular sections, considered in its most general aspects, and features that are especially advantageous when considered more particularly in connection with its de# tailed construction.

Broadly described my process includes in the reliminary stages thereof means for forming a core of fusible electroconductive material for electrolytic ydeposition thereon, together with specially designed provisions for suitably supporting the same within the electrolytic bath. y

Another special feature of my invention consists in means for reinforcing the mate- 'rial where connections are to be made by introducing a threaded bushing and supportin it suitably upon the fusible core so that a ter the shell constituting the finished radiator has been formed thereon, the bushing will be in such close union therewith that it practically constitutes an integral part' of the structure of theradiator.

The `apparatus employed in connection with the above described steps, when more particularly described, as will presently be seen, forms a conical cavity in the fusible core at the point where electrical contact is required, thereby creating an enlarged contact surface for more effectually connecting the core at its respective opposite ends to the electrolytic current. Other objects will appear in connection with the present specication of my improvement. Having reference to the drawings, which relate to the preferred form of the product of my improved process and the apparatus employed therein, Figure l is a plan view of a pair of molds for casting thepfusible core, the upper member partially shown in position thereon.

Fig. 2 is a transverse sectional view of the die members shown in Fig. 1.

Fig. 3 is a partial view of the fusible core as formed in the dies shown in Fig. l, with a threaded end piece attached thereto.

Fig. 4 is a side View of the threaded lug with tlie centering end having just een withdrawn from the end piece 4after the fusible core has been formed in union therewith.f

Fig. 5 is a fractional sectional View of the clectrolytic vat showing the fusible core held in position therein in process of deposition.

Fig. 6 is a medial sectional view of the lower left hand corner of the radiator showing the detail of the connection of the supporting means, during the depositing step.

Fig. 7 is a similar view of the portion of the radiator shown in Fig. 6 with the connecting member and fusible core removed.

Fig. 8 is a side elevation of a completed product.

Fig. 9 is an enlarged sectional detail of the sa connecting means forpouring the fusible material in thc dies to form the core.

Fig. 10 shows thc application of the plug center pin apparatus in applying the bushing to the side of the core for similarly forming the threaded extension from the side of the radiator.

Fig. 11 is a dissociated View of the, plug connecting means shown in Fig. 10.

For a detailed description of the product .of my invention and apparatus, employed' n tion with my improved method, in which I will describe the details of the parts employed in attaching the bushing to the shell deposit composing my finished product. I n

Having reference to the drawings, the numeral l represents the core box of the apparatus preferably employed in connecbox or die is cast a core l5 of fusible material for which ll preferably use the metal lead, because of ,itsl relatively low fusing point combined with correspondingly high electric conductivity. To produce the form of radiator illustrated in the drawings (see Fig. 8), the corebox is made ,up of two similar plates 2 and 3 (see Figs. 1 and having similarly and oppositely disposed m net like formation, semicircular rooved channels 5 and 6 to form when tie side plates are secured together a latticelike construction as if composed of a plurality of interconnecting bars in rectangular form within an oblong frame.

Upon the core 15, as will presently be described more in detail, the' shell 30, which forms the radiator product of my invention, is formed having suitably placed at its opposite ends connecting means in the form of extensions or bushings 10\ with threaded openin s 11 into which are inserted the c orrespon ingly threaded ends of the respective supply and discharge pipes of the circulating heating or coo ing medlum to be employed therein. To provide these threaded openings, one of which is shown in Fig. 7, I first prepare a shortlength of pipe or bushing 10 threaded in the manner above described and temporarily support the same between members 2 and 3 of the core box in semicircular recesses 7 which are formed adjacent the channel 5 and have similar grooved extensions 7 a of reduced radius continuing through to the outside portion of the members 2 and 3; the extensions 7a are adapted to hold the shank 12a of the threaded plug 12 upon which is the threaded portion 13, and upon the shouldered head 13EL is a suitably tapered centering pin 14 projecting from the threaded portion 13 as shown inFig. 4. The diamef er of the shouldered head 13 is the same as the outside diameter of the bushin 10 which in turn is preferably of the same iamete'r as the members 15 composing the rectangularframe of the core. v Preparatory to casting the core of the bilishing 10 is screwed upon the threaded u gbolgit half the length of the bushing piece and in this position the plugs with bushings attached are first inserted in the recessed' portions 7 and 7 i of the lowermost die mem- 13, which should extend inwardly` ber 2, as best shown in Figure 1, whereby it will be seen that when the members 2 and 3 are secured together and the fusible core 15 is poured therein, the materialwill partially fill the bushing held in the position described, forming concentrically around the centering point 14 as shown in Fig. 3;

The metal to form the core 15 is conducted i from the melting pot into-the dies through the opening 21 at the edge thereof, which consists of two correspondingly semicircular grooves or channels in the members 2 and 3 which when secured together as shown in Figs. 1 and 2 forms a communicating duct leading into the channels 5 and'G. lln order to facilitate the pouring process ll prvide 4connecting means (see Figs. 1 and 9) for securely holding the tube of themelting pot (not s own in drawings) from which the fusible metal is conveyed to the mold. 'lhis in the form shown consists of the circular head 20 having concentrica'lly-stepped recesses 22 surrounding the orifice 2l and forming three corresponding concentric annular faces 22a against which are adapted to rest the correspondingly and oppositely disposed annular faces 27a 29 through which the fusible metal is conveyed from the melting pot.

Upon the circular head 20 at suitable intervals around its periphery are pivotally attached in the form-shbwn four latching hooks 25 upon screws V23 in said head, which hook ends 25 are adapted to engage the laterally projecting pins 26, as shown-in the drawings,vthe correspondingly` annular faces 22a and 27a are held in close contact one against the other.

Upon the core member 15 having been poured and chilled, the ` members 2 and 3 are separated, and thereupon the plugs 12 are withdrawn, a yhole being provided transversely through the Shanks 12 for the insertion of a wrench or other instrument to facilitate the unscrewing of the plug 12, the bushing being securely attached to the core in the manner above described. The gate of the fusible core is then cut awayy and the surface from which it has been removed is made to conform substantially to the general-contour of that portionV of the core.

The foregoing steps conclude-the preliminary stages of my process and the concluding steps relate principally to the formationy 1n the connecting collar V 2 7 into which is suitably attached the tube of the radiator shell upon the core member.

The core is prepared for immersion in the v jelectrolytic bath by insertin within the bushing extensions 10 the hoo s 40 and 41,

the former the shorter in length, 'to connect with the positive pole of the battery or other source of electric current, the longer hoolr 41 tc be likewise attached to the oppositeA `end of the core member toconnect with the negative pole in the circuit. y p

I provide the usual electrolytic tank of suiilicient dimensions to receive one or more cores 15 suspended therein, as shown in Fig. 5, the members 40 and 41 being suitably hooked at the top to hang upon the corresponding side walls of the tank, as shown.`

members 40 and 41, the points of each hook v being tapered to correspond with the form of centering pin 14 of-the plug 12; that is to say, the-points of the hooks 40 and 41 thus formed are not only adapted to fit snugly into the correspondingly tapered conca-vities formed in the core member by the plug 12 but also present enlarged surface contact. After the screw has been inserted into the bushing 10 sufficiently far to have its shouldered head resting in close contact upon the outer face of the bushing, the threaded end of the S- shaped hook rods 40 and 41, which are formed of metals possessing low resistance to-gthe passage of the electric current are inserted through the threaded orifice inthe insulating member 50, the opposite end of the hooked members being curved as has been seen to engage the top surface of the respective sides 46 of tank 45. Suitable coverings 2 preferably of soft rubber, encase the greater length of the hook rods, the protecting coat being employed in the usual manner to prevent erosive contact with the acidulated electrolyte and being brought into immediate contact with the head of the screw member 50.

It will thus be seen that the bushings 10 although previously formed for insertion therein, are by my process made lfor all practical 'purposes integral with the radiator structure and furthermore by means of the threaded centering plugs 12 while being partially filled by the content of the fusible core, a sufficient portion of each of the internally threaded orifices of the bushings is. left free to receive the correspondingly threaded insulators 5() to prepare vthe core for introduction. to the electrolytic bath.

It will be further seen that the form of the screw members 50 permits the under face of the shouldered head 51to be brought into immediate contact with the bushing 10 to prevent objectionable threaded interior thereof.

I claim: s y The method of forming tubular shells for depositing in the connect-ion to conduits comprising preparing al core of 'material having al relatively low fusing point, attaching exposedmtal bushings to said core at points corresponding to those where connections are desired, electroplating a metallic coating upon the core and bushings to the desired thickness, and then removing the core by fusing it below the fusign point of the bushing and electrodeposited metal, thereby leaving a shell of the electrodeposited metal reinforced by the bushings where connections'are to be made.

In testimony whereof I have hereunto set, my hand. y

AUSTIN H. HART.

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