US1368062A - Badxaht electric heater - Google Patents

Description

M. H. SHOENBERG AND G. J. HENRY.

RADIANT ELECTRIC HEATER.

LICATION FILED OCT. I6, I919.

, Patented Feb. 8, 1921.

lJ-hll'llElDv STATES- BATE MILTON n. snonnenne AND GEORGE J. HENRY, or sen rnnncrsco, CALIFORNIA.

T QFFICE.

RADIANT ELECTRIC HEATER. 1

Specification of Letters Patent.

Patented Feb. 8, 1921.

Application filed Gctober 16, 1919. Serial No. 331,088.

T 0 all whom it may concern: I

Be it known that we, MILTON l-l. Srronn- BERG and GEORGE J. HENRY, citizens of the United States, and residents of the c1ty and county of San Francisco, State of California, have invented new and useful Improvements'in Radiant Electric Heaters, of which the following is a specification.

' Our invention has for its object the arrangement of parts so that a beam of radiant heat may be directed in any required angle in a vertical plane, also that the said beam may be laterally oscillated, or rotated. Other objects will'appear from the description which follows. i I

In the heater of the present invention we prefer to arrange a heating element which will remain stationary during the lateral movement of the reflector, and substantially about the focus of said reflector, the oscillating or rotary movement taking place by thereflector independent of the heating element, and which reflector movement causes the rotation or oscillation of the radiating heat energy waves as a beam.

By referring to the accompanying figures the invention will be made clear.

side section of the assembled electrical connections carried down through the hollow base and connecting from the source ofelectrical supply connected by the cord 5 in well known ways. Within the base is the vertical stem 6, carried on a roller bearing 7 and supported from internal brackets of the standard 1 as at 8. The stem also should be provided witha secondary or v guide bearing asshown at 9, and I prefer to form this with a grease well as at 10. However, this hearing 9 may also be formed to take end pressureif desired, and is then known in the artas a step bearing. Stem 6 may be secured to the reflector, as by the rivets, or screws, at l, and laterally braced as by the brace wires 13, let. The means of connection between the stem 6 and the arm 3 is preferably that of a hinge-joint as shown at 15, so that the reflector may be tilted 011 the said joint with respect to the stem 6; the said joint, however, is located substantially at the center of mass of the heating element 2 and approximately at the focus of 18, so that upon any swinging of the said reflector to its adjusted positions, it will at alltimes retain the heating element substantially at its focus.

The stem 6 may be oscillated by the mechanism 16, and motor 17; or suitable connections from the motor 17 to the stem 6 may be provided for the continued rotation of the said stein, so that the said movement will be transmitted through the joint 15 turning therewith the reflector 18 and consequently oscillating or rotating the beam of the heat projected therefrom. I

The reflector 18 is to be cut away as shown at 19, so that it will suitably clear the standard 1 in its several adjusted positions. The joint'15 is to be provided with a swivel screw 23, so that the reflector may be clampedin its adjusted position, or other well known means may be employed as a substitute therefor.

We prefer to inclose the motor. mechanism, when this is used, as indicated at 17, within the base of the standard 1, which may be suitably formed for receiving it, or

it may be located externally and suitably connected through said base to the stem 6,

and electrical connections to the motor not shown but well known, are to be furnished.

The heating element 2 is tobe mounted on a suitably insulated base 20 from the standard 1, and while the annular form, which we have shown in the figure, is best suited to the heater where complete rotation is adopted, we do not wish to be confined to this form of heating element, as other forms may advantageously be employed, especially where oscillation of the heat beam is desired, as distinguished from complete rotation.

At 20 we have shown the wire guard screen, which is preferably attached to a ring adapted to engage within the flanged space 21 of the projecting flange 22, fitted to the periphery of the reflector 18, thus inclosing the heat radiating parts of the heater from accidental contact with inflamn, The

mable material, or pcrsoi injury. adjusted position of the re tor 18 b and at the joint 15 is retained by t' ntening the swivel bol The supporting arm 8 is to be provided with suitable braces to retain it rigid with respect to th reflector l8, and its area of connection at t with the heater may be made wider, or additional supports 01' struts may, if required, be interposed between and 18.

It will be obvious that the curved surface of the reflector 18 to be such a concave surface that with heatia element of material size (as distinguished focal point) there will be emitted was from the curved surface of th in the form of a spreading beam. bi'ious that the clearance requisite at "o be such that in any required tilting position of the reflector 18 it will nevertheless clear the standard or base 1.

lVe claim:

1. In an electrical heater, a heating el.e ment fixed upon a standarc, and substan tially at the focus of a heat reflector, a heat reflector supported from a standard and connecting adjustable means whereb" i may be adjusted with respect to the stancard, a wire guard cage forming inclosin means with the said reflector and inclosin the heating element and adji; ing means or the said standard, and a stem support the reflector and cage from subs-tan 'ally center of mass of the heating ele 2. In an electrical heater, a heat- I i ment fixed upon a standard, and substantially at the focus of a heat reflector, a heat reflector supported from a standard and connecting adjustable m ans whereby it may be adjusted with respect to the stan ard, a wire guard cage forming inclosin means with the said reflector and inciosin the heating element and adjusting means or the said standard, and a stem supporting the reflector and cage from substantially the center of'inass of the heating element, and means whereby a rotative movement may be given the stem.

3. In an electrical heater, a heating element fixed upon a standard, and substantially at the focus of a heat reflector, a heat reflector supported from a standard and connecting adjustable means whereby it may be adjusted with respect to the stand ard, a wire guard cage forming inclosing means with the said reflector and inclosing the heating element and adjusting means of the said standard, and a Eu the reflector and cage from substa center of mass the heating element, and means whereby a rotative movement may be given the stem, and means for adjusting the direction of the reflected heat beam in a vertical plane with respect to the axis of the stem.

y the 4:. In an electrical heater, an electrical resistance heating element of symmetrical shape fixed to a standard, a concave reflector mounted with its focus substantially within the heating element; a base supporting said standard and a rotatable joint between said reflector and said base with its axis of rotation coincident with the axis of the heating element.

5. Apparatus as set forth in claim & and means for rotating the said reflector about. the base.

6. Apparanis as set forth in claim at and means for rotating the said reflector and standard, and a guard flange mounted on the periphery of said reflector of annular form and a plurality of guarc wires from the said flange inclosing the heating element.

7. In an electrical heater, an electrical resistance heating element fixed to a base standard, a concave reflector mounted with its focus substantially within the heating element; means supporting the reflector from a base and rotatably connected with said base, and means for rotating the said reflector supporting means, and a guard flange mounted on the periphery of said reflector, of annular form, and a plurality of guard wires from the said flange inclosing the heating element, and an enlarged passage way through said reflector and guard wires admitting relative adjustment about said base.

8. In an electric heater, a base and a reflecuor for radiant heat rotatably mounted on said base, the axis of said rotation passing substantially through the focus of said reflector, an electrical resistance heating element mounted on said base substantially about said focus.

9. In an electric heater, base and a re-.

flector for radiant heat rotatably mounted thereon, the axis of said rotation passing substantially through the focus of said reflector, and electrical heating element mounted on said base substantially about said focus, and a protective grating mounted from the periphery of said reflector and extending over the heating element on the opposite side from the said reflector.

10. In an electric heater, a standard and a reflector for radiant heat rotatably mounted thereon, the axis of said rotation passing substantially through the focus of said reflector, a heating element mounted on said standard substantially at said focus, and electrical connections through said standard and energizing said element.

11. In an electric heater, a base and a reflector for radiant heat rotatably mounted thereon, the axis of said rotation passing substantially through the focus of said reflector, a heating element mounted on said base substantially at said focus, and a pro- I tective grating mounted on the periphery of said reflector and extending over the heating element on the opposite side from the reflector, said reflector and said grating presenting concave surfaces toward said element.

12. In a radiant heater, a concave reflector for heat rays rotatably mounted on a standard, a heat emitting element rigidly mounted on said standard substantially at the focus of the reflector.

13. In a radiant heater, a concave reflector for heat rays rotatably mounted on a standard, a heat emitting element mounted 15 substantially at the focus of the reflector rigidly fixed to said standard, and electrical connections to said element.

14:. In a radiant heater, a concave reflector for heat rays rotatably mounted on a standard, a heat emitting element mounted substantially about the focus of the refiector and electrical connections to said element, in combination with a wire guard frame inclosing with the reflector the element therebetween.

In testimony whereof We have hereunto set our hands at San Francisco, California, this 9th day of October, 1919.

MILTON H. SHOENBERG. GEORGE J. HENRY.

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