US1614230A - Radiant air heater - Google Patents

Description

Jan. 11 ,-l927.

, 0. A. COLBY RADIANT AIR HEATER Filed April 21, 1924 2 Sheets-Sheet 1 INVENTOR Ora 14. C 0/!) ATTORNEY WITNESSES: 1 J/LM Jan. 11 1927.

o. A. COLBY RADIANT AIR HEATER Y 2 M M T a O 0 e T m m m .T S T 5. WA A a M r Y S O B 2 4 2 9 1 2 n 4 r v w 1 4 d e 1 1 F p a 1 1 m 2 l |u WITNESSFSZ Patented Jan. 11, 1927.

UNITED STATES PATENT QEHQE.

ORA A. COLBY, OF IRWIN, PENNSYLVAl-TIA, .ASSIGNQR T5) VTTliElIllTG-HOUSE ELECTRIC & MANUFACTURING CQMEANY, A COBIORATZQN G33 SYLVANIA.

RADIANT AIR HEATER.

Application filed April 21.,

My invention relates to electric heating de vices and particularly to electric radiant air heaters.

One object of my invention is to provide a radiant heater of the reflector type hav ing a relatively simple and easily manufactured supporting and carrying; means.

Another object of my invention is to provide a. radiant reflector-type heater having a. single means for pivotally supporting the reflector on a base, for clamping a heating; unit in its proper operative position there in and for providing); carrying means for the heater.

In practicing my invention. I provide a concave reflector with a wire guard and mount therein a radiant heating unit. An extended member of arcuate form, is secur .d to the rear surface of the reflector and has its upper end. formed to constitute a carryinp; handle and its lower end formed to constitute pivotal mounting means on a suitable base.

In a modified form of construction, a single extended arcuate member is secured to the rear surface of the reflector and has its lower end pivotally mounted on a base, while an intermediate pressed-out portion is eifcctive to clamp a heating unit in its proper operative position in an axial opening in the reflector, while the upper end thereof is forn'ied to constitute a carrying means for the heater.

In the drawings,

Figure l is a view. in side elevation. 01 a radiant heater embodying my invention,

Fig. 2 is view in rear elevation thereof,

Fin. 3 is a view, in side elevation. of a modified form of radiant heater embodyinn; my invention,

Fig. 4; is a view, in rear elevation thereof,

Fig. 5 is an enlarged fra nentary view, in vertical section, of a port on of a radiant heater embodying my invention, and

6 is an enlarged view, partially in rear elevation and partially in lateral section, of the central portion of a device embodying my invention.

Referring more particularly to Figs. 1 and of the drawi a radiant reflectortype heater ll con'xprises a reflector member 12, of concave or howl-shape that has a re movable wire guard 13 mounted at the front thereof. A plurality of substantially radially-extending wire members 14 constitute a- Serial No. 7G'?,873.

part of the guard 13, the inner ends of which are suitably secured against an annultil ring 15. It plurality of the wire members have their inner ends extended beyond the annular member indicated by the numerals 16 and l? in order that they may constitute a means for holding; the wire ,e'uard M. inst the r- 'lector 12.

.r-r radiant and elongated heatino; unit 18 is mounted within the concave surface of the reflector member 153 and is alined axially thereof. extending through an axial opening (not shown). general. the heating; unit 18 comprises a suitable refractory support 19 and a resistor member 21 wound W thereon.

T he heating unit 18 is removahle from the refractory support in a rearwardly direction. An annular and rearwardly extending! tuhular holder is suitably secured to the re flector 12 and screw-cap clamping member 23 has screw-threaded on cement with the member 22, whereby an -tepgral and enlarged. intermediate portion of the heating unit l8 is clamped therehetween and the heating unit is held in substantially its proper operative position relatively to the reflector.

A. rearwardly-extendiu51 metal shell 24 comprises a part of the heating unit 18 and is effective to protect a pair of spaced contact terminals 535 and 26 that are mounted at the rear end of the assembled unitary heating: structure 18. As the'construction of the heatino; unit and of the mounting means therefor constitutes no part of my invention, it is not illustrated or described in detail. It is, however, more pa cu. rly disclosed and claimed in Patent No. 1, 3,638, issued JlQUSi) 1922. to F. Forshee and asned to the lVestingrhouse Electric Products Company.

A combined heater carrying a pivotal-supportin means comprises a member 27 that is of extended arcuate form, having its upper end shaped to constitute handle or carrying); member 28 and having its lower end formed to constitute a ,Xotal mounting pdtion 29 that is in operative ene'agement with a suitable 31. The ineinoer 27 is secured against the outer rear surface of the reflector 12 by a plur lity of rivets 32. 33, 34: and the member 2'? h aving elongated opening); 36 therein in order that the member 22 and the rear portion of the heating unit 18 may extend therethrough. An opening 3'? is provided at the upper portion thereof in order to permit of an operator inserting his lingers to carry the heater, the handle portion 28 being bent outwardly and rear wardly as is more particularly shown in Fig. 1 of the drawings.

Stifiening ribs 38 and 39 are provided at the upper handle portion to permit of making the member 2? out of relatively thin sheet metal, while still obtaining sullicient rigidity.

Integral and laterally-extending flange portions ll and d2 constitute a part of the lower end portion 29 to provide sutiicient rigidity and also to provide members through which a pivotal mounting means, comprising a machine bolt til, may extend. the bolt passing also through an integral top portion of the base 31.

A nut stat holds the bolt 4?, in its proper operative position and permits or obtaining suiiicient frictional engagement between the co-operating parts to hold the reflector and heating unit in any desired angular position relatively to the base.

Referring more particularly to the modification illustrated in Figs. 3 to (S. inclusive, of the drawings, a radiant retlector heater 15 comprises a reflector member 12 of concave or bowl shape that has mounted at the front thereof a removable wire guard 13, the guard 13 comprising a plurality ot substantially radially extending wire members 14, the inner ends of which are suitably se cured against the annular ring 15. A piurality of wire members have their inner ends extended beyond the annular member 15, as indicated by the numerals 1G and 17 in order that they may constitute a means for holding the wire guard against the retiector 12.

A radiant and elongated heating unit 18 is mounted within the concave surtace ot the reflector 12 and is alined axially thereoi, extending through an axial opening in that is illustrated more particularly in Ti 5 ot the drawings.

The heating unit 18 there illustrated, com prises a suitable elongated refractory support 19 that has an enlarged rear end portion 17 providing an annular should r portion l8. A resistor member 21 of any suitable type and construction is wound upon the it'orwardly extending cylindrical nortion ot the heating unit 18.

A rearwardly extending tlange portion if) is provided at the rear surface or the reticetor 12 immediately surrounding the opening to against which the shoulder portion it? of the refractory member lfl may rest.

It is obvious that the heating unit 18 removable from the reflector member in a rearwardly direction. A member 51, of elongated arcuate form, comprises a pressed metal member that is provided with apair of side flanges and 53 that extend along substantially the entire length of the member 51. At the lower end the flanges 52 and 5 3, operatively engage the reduced top portion 01 a base member 31 and are provided with openings therethrough, through which a pivotal mounting means constituted by a suitable machine bolt 13 may extend. A wing nut l-lis mounted on the outer end of the machine bolt 13 to suitably clamp the tlange portions and 5 3 against the sides of the member 31, in order that the member 51 may be held in any desired position angu arly relatively to the supporting base 31.

stituted by extensions of the flanged portions 1 53; and 53 that are respectiyely provided with openings: 5e and so therethrough, that may be engaged by the thumb and linger of an operator to permit of carrying the entire heater.

ll'hile l have illustrated a difi'erent shape of upper end of the member 51 from thatillustrated in Figs. 1 and of the drawings, either oi these modilicatimis may he employed, as may be suitable or desired.

The intermediate portion of the member 51 is provided with a rearwardly extending integral portion .37 that comprises two parts. One part 58 is 01 such internal diameter and gth as to receive the rear end portion 1-? the refractory member 1!) and to clamp 1 securely against the annular flange mem- 1' l9 by a shoulder portion 59. The shoulder portion 59 connects the part 58 vith a second part (El that may be ot relatively small diameter. and of such axial length as to provide suliicient space tor the inner ends of twin conductors (S2 and (33 ot a suitable supply circuit cord (3-1 that extends into the member (31 through a bushing (3-5 ot' insulating ial that is located in an axial opening (3(3 in the part 61.

The inner ends ot' the conductors 62 and 63 are secured to terminal plates (37 and (38, respectively. that are held against the rear suri'ace of the part 1? o l the re tractor-y member 19 by co-operating machine screws (3!) and T1 extending therethrough and held by co-operating nuts The two ends ot the resistor member 21 may be electrically connected to the terminal plates (57 and 68 by means of the machine bolts (39 and 71..

The device embodying my invention thus provides a single member t'or pivotally supporting a reflector and a heating unit on a base, for carrying the entire device and for clamping the rearwardly removable heating unit in its proper operative position in the reflector. It may, if desired, serve also as a moui'iting means for a name plate 73 (see Fig. 2) that is suitably riveted thereto The single member constituting the carrying means, the pivotal supporting means and the heating unit clamping means may be easily and uickly manufactured and may be assembled in its proper operative position on the heater and may be easily and quickly removed therefrom.

Various modifications and changes may be made without departing from the spirit and scope of the invention, and I desire therefore that only such limitations shall be placed thereon as are imposed by the prior art.

I claim as my invention:

1.. In an electric heater, the combination with a concave reflector, and a base, of an extended arcuate member, having its lower end pivotally mounted on said base and h aving the reflector secured thereto intermediate its ends.

2. In an electric heater, the combination with a reflector, and a base, of an extended member having the reflector secured thereto intermediate its ends, having its lower end pivotally mounted on said base, and comprising a. handle portion at its upper end for carrying said heater.

3. In an electric heater, the combination with a reflector, of a combined heater-carrying and heater-supporting member, of sul stantially arcuate form and directly secured to the rear surface of said reflector.

4-. In an electric heater, the combination with a reflector, of an elongated heater-carrying member directly secured to the rear surface of said reflector and comprising means for pivotally supporting the same.

In an electric heater, the combination with a reflector, and a heating unit. of a reflector-supporting and heatingunit-clamping member.

6- In an electric heater, the combination with a reflector, a heating unit, and a base, of a single means for pivotally supporting said reflector on said base and for clamping said heating unit in its proper operative position relatively to said reflector.

7. In an electric heater, the combination with a reflector having an axial opening therethrough, and a heating unit extending into said reflect-or through said opening, of a single member for permitting of carrying said reflector and for securing said heating unit in its proper operative position in said openlng.

8. In an electric heater, the combination with a reflector, a heating unit, and a base, of a single member for pivotally supporting said reflector on said base, for securing said heating unit in its proper operative position relatively to said reflector and for carrying said heater.

9. In an electric heater, the combination with a reflector having an axial opening therethrough, a heating unit extending into said reflector through said opening and rearwardly removable therefrom, and a base, of a single member secured to the rear surface of the reflector for pivotally supporting it on the base, and for clamping the heating unit against the reflector.

10. In an electric heater, the combination with a reflector having an axial opening therethrough, a heating unit extending into rid reflector through said opening and rearwardly removable therefrom, and a base, of a single member secured to the rear surface of the reflector for pivotally supporting it on the base, for clamping the heating unit against the reflector and for constituting a carrying means for said heater.

11.. In an electric heater, the combination with a reflector, a heating unit, and a base, of a. single elongated member having means at its lower end for a pivotal mounting on the base, and having also means for securing said heating unit in its proper operative position in said reflector when secured to the rear siu'facethereof.

12. A. reflector heater comprising, a base having an upright por ion, a dished heat reflector, and a bracket on the back of said reflector and dished less than said reflect-or to contact only the deepest portion of said reflector and one end thereof formed with a handle bent outward from said reflector to keep the handle cool and the other end thereof hinged to said upright portion.

A reflector heater comprising, a base having an upright portion, a dished heat reflector, a dished bracket on the back of said reflector and one end thereof formed with a handle and the other end thereof formed with a pair of ears straddling said upright portion, a hinge pin through said ears and through said upright portion, and means on said hinge pin to adjust the friction between said ears and said. upright portion.

In testimony whereof, I have hereunto subscribed my name this 27th day of March ORA A. COLBY.

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