US1211973A - Electric heater. - Google Patents

Description

V. SLATER & L. D. WES].

ELECTRIC HEATER.

APPLICATION FILED JUNE 9.191s.

Patented J an. 9, 1917.

2 SHEETS-SHEEI I.

3 m newton, 2 621m V. SLATER 6; L. D. WEST.

ELECTRIC HEATER.

APPLICATION men mun: 9.191s.

1,21 1,973. Patented Jan. 9,1917.

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altar/wags UNITED STATES PATENT OFFICE.

VERN SLATER AND LEONIDAS D. WEST, OF DENVER, COLORADO, ASSIGNORS TO THE ELECTRO-FUME COMPANY, OF DENVER. COLORADO, A CORPORATION OF COLORADO.

ELECTRIC HEATER.

Specification of Letters Patent.

Patented Jan. 9, 1917.

Application filed June 9, 1916. Serial No. 102,888.

To all whom it may concern:

Be it known that we, Vans Sm'rnn and Ifl-IONIIIAS D. \Vns'r, citizens of the United States, residing at Denver. in the county of Denver and State of Colorado, have invented certain new and useful Improvements in Electric Heaters; and we do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. Our invention relates to improvements in electric heaters and more mrticularly to those in which a current of air is induced through a casing having an electric heating element therein.

The main object of the invention is to provide a simply constructed, inexpensive and efficient heater which will be adaptable to a wide range of uses.

With this general object in view, the in- Vention resides in certain novel features of construction and in unique combinations of parts to be hereinafter fully described and claimed, the descriptive matter being supplemented by the accompanying drawings which constitute a part of this application and in which Figures 1 and 2 are side elevations at right angles to each other; Fig. '3 is a vertical section taken substantially on, the plane of the line 33 of Fig. 2' Fig. 4 is an additional vertical section on the plane designated by'the line 4-4 of Fig. 3; Fig. 5 is a horizontal section viewed on the lane of the line 5--5 of Fig. 3; Fig. 6 is a si e elevation of the cap of the casing'and heating device carried thereby; and F-lg. 7 is a. diagram showing the wiring for the motor driven fan and the electric heater.

In-specifically describing the construction shown in the drawings above briefly de scribed, similar characters will be employed 'to designate corresponding parts throughout the several views and reference will be herein made to the numerous elements by their respective indices. To this end, the numeral 1 designates a circular ornamental base rcfcrably having rubber feet 2. A cylin rical casing 3 rests on the base 1 and is secured thereto by bolts 4' secured to said casing and pawing throu 'h the base as shown clearly in Figs. 3 an 4.

Substantially midway between its ends, the casing 3 is provided with a horizontal flat blades 10 rise, these blades being adapted to throw the 2111- outwardly from the eye of the fan by centrifugal force and to discharge said air through an outlet nipple 11 with which the casing 3 is provided. By disposing the fan 8 in the manner described and shown, the same efi'ect is obtained as when placing a fan centrally in a cylindrical casin and forming the latter with an external bulge terminating at its larger end in an outlet su'ehfas 11. Since such a bulge in the present device would be undesirable on account of the fact that it would detract from the appearance thereof, we deem the eccentric positioning of the fan 8 and the sppply opening 6 rather important features of our invention.

An electric motor 12 is fixedly supported upon thebase 1 within the lower -li'l'id 0f casing 3, it being to the vertical shaft 13 of said motor that the 'disk 9 of fan 8 is scoured. A partition 14 is supported by the motor 12, being preferably spaced thereterior of the casing, said b ock having a pair of contact plugs 18 from winch wires 19 1 and is located for the most part on the exand 20 lead to the two terminals of the motor 12 (see more particularly le s. 3 and 7) A branch, 21 is disposed in block 17 and connected with one terminal of a suitable switch 22 having'an operating knob 23 disposed on the exterior of block-17, said switch ((liil'itliltlllg with a contact 24 carried by said block. From this contact, a connector 25 extends and is electrically connected with a socket 26 ex used at the up )er end of block 17. A secon socket 27 is coated in close proximity to socket 26 and is electrically connected by a wire 28 with the wire 19. Main positive and negative lead wires 29 and 30 may extend from any suitable source of current supply, said wires having sockets 31 receiving the plugs 18 therein and being adapted to be electrically connected by any suitable plug with an ordinary electric lamp socket. By this wiring, it will be obvious that current from the wires 2!) and 30 will actuate the motor 12 and will shunt to the sockets 26 and 27 when the switch 22 is closed. This shunt circuit serves to operate an electric heater which is disposed in the upper end of the casing 3.

A cap 32 partly closes the up er end of the casing, said cap including a fiat ring 33 whose lower portion is received snugly in said casing, said ring preferably having a bead 34 for limiting its insertion. pair of set screws 35 are threaded through the upper end of casin 3 at opposite points for reception in suita ile opemngsform'ed in the ring 33, and for properly alining said openings with the screws when applying the cap 32, the lower edge of thering is preferably formed'with a notch 36 to receive a'pin 37 which extends inwardly from the casing. The upper edge of ring 33 is directed downwardly and inwardly to provide a fr'ustoconical-shaped flange 38 for delivering air into a cylindrical heater 'casin'g'39 which is secured at its upper end to said flange 38 and is thus supported thereb The casing 39 depends into casing 3 am has its lower end disposed immediately above the opening 6 so thatthe air heated within said casing 39 will pass directly into-the fan compartment to be expelled therefrom by fan 8.

Inverted L-shaped brackets 40 secured to and from the cap 32, "said brackets supporting thereon a perforated disk 41 which will preferably be provided with an eye 42 by means of which theyentii'e apparatus may be suspended should occasion de- Tnand. Mounted 'withinft'hc'casing 39 is a rectangular inclined frame 43 of any preferred insulating material, a resistance coil 44 being wound around said fra'xnens shown in Figs. 3 and 4. 'Cui-rdntmndacting wires 45 and 46 lead from the amino.- "of the coil'44 and are h'on Sad within u llciciblo "metal tube or conduit 47-, the latter extending through the "opening in -the ring 3;, and downwardly along the exterior-of casing 3. At their lower ends, the wi'roa tfi and 46 are provided respectively with plugs 48 and 4.) which are received in the sockets 26 and 27 of the terminal block 17. It will thus be observed that when the switch 22 is closed by proper operation of the knob .23, not only will the motor 12 be driven, but the resistance coil ll will be energized to beat all air passing through the casing 39, it being of course understood that the expulsion of air through the outlet 11 by fan 8 will cause other air to enter through cap 32 to fill the partial vacuum created.

Although the use thereof is not absolutely essential. the lower end of the casing 39 is preferably provided with a grating 50 which prevents tampering with the heating unit when the latter is removed with cap 32, said grating also preventing the entrance of anything which might in ure the fan 8. When desired, the entire cap 32 may he removed, it being then of course necessary to disengage the plugs 48 and 49 from the sockets 26 and 27. Said cap and the parts carried thereby may be placed at any dcsircd point and other air treating devices which constitute the subject matter of additional applimtions may be employed in lieu. of the. heater. ll'lu'n the latter is employed, however, the apparatus will discharge a continuous current of hot air which may be used to great advantage as a hair drier or for any other purpose for which the user may see fit to employ the apparatus. From the foregoing description, taken in connection with the accompanying drawings, the construction, manner of operation and advantages of the invention will be readily understood, but we wish it understood that although we have shown and described certain specific details of construction for illustrative purposes, numerous changesvmay be made within the invention as claimed without sacrificing the main advantages thereof.

It will he observed from the above description of the construction and operation of this invention. that the apparatus is capable of many uses but we might state that the principal ones are, first, that it isaportable electric heater that may be readily p0- sitioned wherever desired and can lie-made to quickly. raise the temperature of the room; second, that by merely turning all the current from the electric heating coll or element the blast of air produced by the. ma-

-chine will not be heated and it may thus be used as an ordinary electric fan although by reason of the discharge of the airthrough the contracted outlet or nozzle the air will be concentrated on a certain point; third, that the apparatus may be very cllicicntly used as almir drier by reason of the fact that the flexible tubing ,mnnrctcd to the. outlet may direct the blast of heated air or blast of heated and medicated or pol-finned air wherever desired by the user; and fourth, that since the electric heating element may be readily turnedon and oi Land lhe l'umeluo disseminator at the outlet may be readily turned on and oil, the machine may be u as a deodorizer, perfumer, hair drier, fan, small heater, hulnidor, etc.

We claim:

1. An air heater and circulator comprising a main vertically elongated casing having in its top portion of said casing, the latter having an air outlet through which said fan is adapted to discharge air taken into the casing through said air inlet, an auxiliary open-ended casing secured to and depenuing rom the top of the main casing, said auxiliary casing having its lower end disposed adjacent the eye of the fan, and a heating element in said auxiliary casing.

2. An air heater and eirculator comprising a vertically elongated casing, a removable cap applied to the upper end thereof and having an air inlet, a fan in the lower portion of the casing, the latter having an outlet through which said fan is ada ted to discharge air taken into the casing t irough the aforesaid inlet, an electric motor below an air inlet, a fan in the lower said fan for driving the same, a terminal block adjacent the lower end of the casing, 11 pair of wires for supplying current to the motor, said wires passing through said block a pair of sockets carried by said lilock an electrically connected with said wires, the connection between one socket and one wire including a manually operable switch, an electric heater supported by the aforcsai cap for heating the air as it passes through the casing, and a pair of wires for feeding said heater, said wires being passed out- \vardl y through the cap and extended down- \vardly along the exterior of the casing, the

lower ends of said wires having plugs for detachable engagement with the aforesaid sockets.

In testimony whereof we have hereunto set our hands in the prcsencebf two subscribing witnesses.

VERN SLATER, LEONIDAS D. WEST. Witnesses:

J. A. GRIESBAUER, L. O. HILTON.

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