US2318468A - Adjustable heating apparatus - Google Patents

Description

May 4, 1943- F. s. DENNEEN ETAL ADJUSTABLE HEATING APPARATUS Filed Aug. 6, 1941 I5 Sheets-Sheet l a FT n W E M x U 1 J 5 "m w r u u 5 mm 4 .wu F a a. A y B m. B M 2 7 y 1943. F. s. DENNEEN EIAL ADJUSTABLE HEATING APPARATUS Filed Aug. 6, 1941 3 Sheets-Sheet 2 Fig. 2

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May 4, 1943- F. s. DENNEEN ETAL ADJUSTABLE HEATING APPARATUS Filed Aug. 6. 1941 3 Sheets-Sheet 3 'MJMu;

Patented Mi. 4, 1943 ADJUSTABLE HEATING APPARATUS Francis 8.

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Application August C, 181, Serial No. 5,595 11. Claims. (G. 21H!) The present invention as an improvement on that shown and described in our co-pending application Serial No. 304,986, filed November 17, 1939, relates to mechanism for rendering more convenient and universal the apparatus contained in the said pending application. Apparatus of this general character is applicable to the heat treatment of many articles which vary in size and form and which, as a result, require to be handled in a variety of ways. In the former application, the general arrangement of the apparatus is shown and described. and one simple way of bringing out the power leads from the transformer within the upper part of the apparatus to supply power to an inductor placed in the quench collecting basin is shown.

Frequently it is not advantageous to place the inductor in one fixed position as shown in that application, but is often found necessary to move this inductor into various other locations and to rotate it into various positions, especially when progressive or continuous operations are required,suchssare describedinourcoepending application Serial No. 807,39iil1ed December 4,

1939. If it were desired to use the apparatus of this last named application to progressively heat treat elongated parts which were too long to pass vertically through the inductor, it would then be necessary to turn the inductor and the feeding mechanismsoastopassthearticlestherethru in a horizontal direction or in an intermediate direction. 7 1

This invention thus relates to apparatus for adjusting the positions of operative elements.

particularly elements for delivering power for heating. such as inductors or resistors for electrlc heating. and nozzles for combustion heaters or for the transfer of power for a variety of other purposes including the heat treating of articles. It is adapted also to controlling the direction of flow of cooling or quenching fluid for such heat treating or for other purposes. It is particularly well adapted to use in cases where a variety of articles are to be heated or otherwise operated upon which require a modification in the apparatus in changing over from one, article to another. One of its chief uses as above indicated has been found in the mounting of inductors used in the heat treatment of articles such as the inductors of the above stated applications and of such inductor as is shown in our Patent No. 2,170,130.

Inheatingarticlesofvaryingformandsise by electric means, a variety of heating elements or inductors is required, each being adapted to the particular item being operated upon and eachisoftenrequiredtobeadiustedtoaparticular position. For instance, if an inductor for progressively heating a series of articles is employed. it may be necessary that the inductor be arrangedtoletthevariousarticlespaqthruor adjacent to the inductor in many different directions. To this end, the conductors to which the inductors or other elements are connected are arrangedsoastoberotated or otherwisemoved into numerous positions to provide the greatest possible convenience in changing over from operating on one part to operating on another.

The chief object of our invention has been to provide apparatus of a universal character for 81199 1 8 P wer to elements for heating or other purposes. Another object has been to provide means for convenientlychanging the positions of thesehlements to adapt them to a variety of uses. A further oblect has been to provide means of this seneral character which is compact, easily installed and eiilcient in operation. Other obiects will appear in the following description- With the above and related objects in view, the said invention consists of the means hereinafter described together with the steps employed in using this or similar means, which means and steps are particularly pointed out in the claims. The annexed drawings and the following description set forth in detail certain means and one mode of carrying out the invention, such disclosed means and mode illustrating, however, but

one of various ways in which the principle of the invention may be med. In the annexed drawings:

Fig. 1 is a front elevation of the preferred form t of our apparatus.

Fig. 2 is a rear elevation of this apparatus.

l'lg.3isasectionsubstantiallyat8lof Fig. 2. a

Fig. 4 is a section substantially at 4-4 of Fig.2showingthebusbarsonly.

Fig. 5 is a side elevation showing the rotatable mechanism attached to its front support.

Fig. 8 is a rear elevation-of the mechanism shown in 1'18. 5.

Referrlng now to the drawings, ll represents the front member of an enclosure for our improved mechanism.this front member serving as the chief supporting element of this mechanism. This front member is provided with a bore into which is inserted the rotatable support If. This support I! carries the transformer ll to whose primary current is supplied by concentric tubularprimary conductors ll and II. The secondary of this transformer connected to deliver secondary current, usually of high amperage, to the terminals #6 and ii. The outer conductor is has terminals i3 and it and the inner conductor provided with terminal 20. This entire mechanism comp ising the transformer and the To obtain resonance in the primary circuits, capacitors such as d5 are employed. These capacitors are connected between bus bars 35 and 32. One terminal such as A5 of each capacitor is connected directly to one bus bar 35 as at 41 and the other terminal, such as 68 is connected to the other bus bar 32 by means of the lead 45 and by connector 50 and plate 5i which plate is secured to plate 36 as shown.

ry p mary conductors with their .13 rotatable on the supporting front i is usually made of IiOll-EliJ-liflili) material. This rotatable support is provided with the El either attache to or integral there fiith. Meshing with this gear v I is minim 23 which 13L ion is carried by 1323 mmals l6 and ll to bring the inductor 25 or c .Tiaft having a in the flg i; support other heating member attached to them into I ru m haft 23 ispl-ovided 15 some desired angular position, screws 33 and 39,

holding the terminals I8 and I9 and of conductor tubes i l and i5 respectively, are loosened to permit these terminals to slide in substantial uppgrf. ngmber 5g and is contact with the plates 30 and 38 respectively. ru -7x311 by means 9i screu s uch 20 SCIGWS in the clamp ring 24 on 12115 front Of 59 t when the Screws the apparatus are also loosened to release the Operation When it is desired to rotate the secondary terh squat r other form to engage a crank tvrenclhereby the shaft and pinion can otated. a plate is provided and the transformer 25; to which A I and 25 are attached. all in firmly o pinion 22 and this pinion 1S rotated in the desired direction and thru a sufiicient number of turns 1 m5 fmm membe? 5g is damped clamping effect of this clamp ring and to permit this mate and Support "hus h mg support 52 to be rotated. A crank or wrench is t I, then applied to the end of shaft 23 carrying i n the front member. It will i m t screws 2a to turn gear 28 and support l2 to the desired t be appgigd shaft 23 angular position. During this movement, termi- Sbrmer with its primary leads gr, nals i8 and i9 rotate substantially in contact 5 secgndary g g 5g and 5'; to 30 with plate 3G and terminal 20 rotates in substantial contact with plat 36, the piloting end 43 secured to terminal 20 rotating centrally in the tion at or which the screws are tightened to hold bore in Plate during s ion to hold the mechanism securely in its new position. It entire moving mechanism in l gnment While will observed th t the terminals 23 and El 35 being u n s m Cases Where the desired angular movement is large, screws 33 and 39 are ran it; and it hich an inductor or other heating member 25' can be rotated to any desired posiarc elongated and have numerous holes for L s rews so that the inductor 25 or other heater removed entlrely from holes m the termmals b0 @1156 Selected lgcations along these and inserted in other holes which are uncovered by the arcuate slots as the terminals rotate. It will be understood that the tubular conductors i4 and i5 are suitably insulated from a a s is gmvldei each other and that these conductors are firmly v swam-COTS and g5 usually attached to the transformer l3 so as to form a m and are required to be unit of the necessary structural strength. Tubes a ever the transformer is turned their 4.3 for supplying Cooling fluid to the coils of the connections to the supplying bus bars do not comtransformer ar 9 provided and are made of the flexible cables Whish are fte employed terial sufficiently, flexible to permit the required ii such cases but have heavy copper terminals angular movements of thfi transformerm g a clamped @113 bus bars To It will be observed that space is provided within Clamping means must be 5 the confines of the structureto insert all necesafter the conduc- Capacitors- Le ash-ed g This general arrangement is not intended to .JabAe claanmng the tap be limited to apparatus for heating by induction, know-n a dearly but as pointed out heretofore it may be employed t g g3 and 39 which 5; for resistance heating, or for holding burners or 3 is the Outer C nducmr M are in other mechanism in combustion heating, or it cgniact with g 39 which may be employed in apparatus intended for pur- With arc-late slots 5 and g poses other than that of heating. screws 33. The plate so by Other modes of applying the principle of our 1" co. nectar is joined with bus bar 35 50 inlenfion may be emPloyed instead of the is supplied fmm scme Outside explained, change being made as regards the k high ffaquency genemmr or means herein disclosed, provided those stated by flermin 1 26 which is Secured any of the following claims or their equivalents in sl ding Contact adth be BmPIOYQded with arcuate We, therefore, particularly point out and disadjusting the position of the inals and by rotating the 40 ntially universal adjustment 155 tinctly claim as our invention: extgnslg l. In apparatus of the character described, a

w th above transformer having a substantially tubular conductor secured thereto to form a substantially grower supply'unit, the transformer and the conductor having a common axis of rotation, a for the transformer and a support for the conductor, the said supports being spaced from each other, means for rotating the said unit idea with on the supports to angularly adjust an inductor 2,318,468 being carried by the unit, a bus bar for delivering current to the conductor, and means to secure the conductor to the bus bar to hold the afore said power supply unit in adjusted position.

2. In apparatus of the character described, a transformer having a conductor secured thereto to form a substantially rigid power supply unit, a heating member being attached to the unit, a support for said unit, means for rotating the unit on the support to adjust the heating member, a bus bar for supplying current to the conductor, and means to release the conductor from the bus bar to permit the conductor to be rotated to a new position, the last named means being adapted to again attach the conductor to the bus bar in a new position on the bus bar.

3. In apparatus of the character described, a power supply unit comprising a rotatable transformer having an axis, an inductor being attached to the transformer, a conductor for supplying power to the transformer, said conductor being rotatable with the transformer on the axis, a fixed conductor for supplying periodically varying current to the rotatable conductor, means for rotating the transformer and rotatable conductor to angularly adjust the inductor, and means to fasten the rotatable conductor to the fixed conductor to lrilld the rotatable conductor when the inductor has been adjusted.

4. In apparatus of the character described, an enclosure, a transformer having an axis passing thru a part of the enclosure, an inductor being attached to the transformer and projecting exteriorly from a wall of the enclosure and substantially along the axis, a conductor for supplying current to the transformer, the transformer and conductor being rotatable on the said axis to angularly adjust the inductor, locking means associated with a wall of the enclosure for holding the inductor in adjusted position, and means for supplying periodically varying current to the conductor.

5. In apparatus of the character described, a power supply unit comprising a transformer having an. axis, conductors for supplying power to the transformer, the conductors extending axially from a side of the transformer and serving as a support for the transformer, an inductor being connected to the transformer and lying substantially along the axis thereof, means for rotating the transformer and the supporting conductors on the said axis to rotatably adjust the inductor,

clamping means for holding the transformer and conductors to maintain the inductor in an adjusted position, and means for supplying periodically varying current to the conductors.

6. In apparatus of the character described, a power unit comprising an inductor and a terminal for delivering periodically varying current to the inductor, the terminal being elongated to provide space to selectively position the inductor on the terminal, means fastening the inductor to the terminal, means for rotating the power unit on an axis to rotate the terminal and to move the inductor into a preselected position, and means to hold the inductor in the preselected position,

7. In apparatus of the character described, a power unit comprising an inductor and a terminal for delivering periodically varying current to the inductor, the unit being rotatable on an axis in a supporting member, the terminal being elongated and extending transversely of the axis to provide space to selectively position the inductor on the terminal radially from the axis, means fastening the inductor to the terminal in a selected position, means for rotating the power unit on the axis to rotate the terminal and to move the inductor along an arc into a preselected position, and means for holding the inductor in the preselected position.

8. In apparatus of the character described, a

power unit comprising an inductor and a terminal for delivering periodically varying current to the inductor, the inductor having a bore to receive an article to be heated, the power unit being rotatable on an axis in a supporting member, the terminal being elongated and extending transversely of the axis to provide space to selectively position the inductor on the terminal substantially radially from the axis, means fastening the inductor to the terminal in a selected position, means for rotating the power unit on the axis to rotate the terminal and to move the inductor along an are into a preselected position to change the elevation of the bore relative to the axis and to change the angle of the bore relative to the aforesaid support, and means for holding the inductor in the preselected position.

9. In apparatus of the character described, a power unit comprising an inductor and terminals for delivering inducing current to the inductor, the inductor being attached to the said terminals at selected positions, a bus bar for delivering current to the power unit, means for angularly adjusting the power unit to selectively position the inductor, and means for fastening the power unit to the bus bar in adjusted position.

10. In apparatus of the character described, a power unit comprising an inductor and power transforming means for delivering inducing current to the inductor, a conductor for delivering current to the said power transforming means, spaced supports for said power unit, the supports having coaxial bores, one of the bores engaging a part of said power transforming means for supporting one part of the unit, the other bore engaging a part of the aforesaid conductor to support another part of the unit, means for angularly adjusting the unit in the bores to angularly adjust the inductor, and means to secure the unit in adjusted position.

11. In apparatus of the character described, a power supply unit comprising a transformer and n inductor, the transformer and inductor having an axis of rotation, said inductor having a bore, an axis of the bore having a direction making a substantial angle with the said axis of rotation, means for rotating the transformer and inductor about the axis to change the direction of the axis of the bore of the inductor, and means for supplying periodically varying current to the transformer said last named means being adapted to be secured current to the transformer at substantially all selected positions of the inductor.

FRANCIS S. D NNEEN. WILLIAM C. DUNN.

in selected positions to deliver said

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