US1566989A

US1566989A - Electric heater

Info

Publication number: US1566989A
Application number: US743202A
Authority: US
Inventors: Skolnik Max
Original assignee: Individual
Current assignee: Individual
Priority date: 1924-10-13
Filing date: 1924-10-13
Publication date: 1925-12-22
Anticipated expiration: 1942-12-22

Description

Dec. 22 1925- M. SKQLNIK ELECTRIC HEATER Filed Oct. 15, 1924 3 Sheets-Sheet l I n ven'tor;

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M. SKOLNIK ELECTRIC HEATER Filed Oct. 13, 1924 5 Sheets-Sheet 2 my-z.

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UNITED STATES MAX SKOLNIK, MINNEAPOLIS, MINNESOTA.

ELECTRIC HEATER.

Application filed October 13, 1924. 'Serial No. 743,202.

To all whom it may concern:

Be it known that 1, MAX SKoLNIK, a citizen of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Electric Heaters, of which the following is a specification.

My invention relates to electric heaters and particularly to electric heaters in which a blower or fan is employed to force air past an electric resistance element which heats the air before it is expelled from the blower casing. The number of resistance coils which can be energized by connection with the customary incandescent lamp wiring is very limited and in practice it has been found that when a number of resistance coils are arranged within the interior of the blower casing, they will not be adequately supplied with current. Also in such an arrangement the air is not maintained in contact with the heating elements long enough to become heated to the desired extent. An object, therefore, is to provide a heater in which the blower delivers air to a nozzle having an electric resistance element therein and in which the delivery of air from the nozzle is restricted so that the air accumulates around the resistance element and is highly heated before it escapes into the room. Another object is to provide a nozzle from which the heated air is sprayed into the room in a large number of small streams instead of being delivered as a strong blast.

The full objects and advantages of my invention will appear in connection with the detailed description thereof and the novel features embodied in my inventive idea will be particularly pointed out in the claims.

Inthe accompanying drawings which illustrate a practical embodiment of my invention, Fig. 1 is a front elevational view of the heater. Fig. 2 is a side elevational view. Fig. 3 is aview in section on the line 33 of Fig. 1. Fig. 4 is a view in section on the line 4-4 of Fig. 1. Fig. 5 is a view in section on the line 5-5 of Fig. 4. Fig. 6 is a view in section on the line 6-6 of Fig. 4.' Fig. 7 is a view representing a wiring diagram.

Referring to the construction shown in the drawings the numeral 10 designates a base upon which is mounted a blower casmg 12 and a motor casing 14. The motor has a shaft 16 which extends through the chamber in the blower casing. A, number of arms 18 are secured to the shaft 16 and these arms carry fan blades 20. The blower casing has an upward extension 22 which is deflected laterally so as to discharge into a discharge nozzle 24 having ashort elbow end as will be apparent from Fig. 1 so that the main portlon of the nozzle extends forwardly.

This nozzle is swivelly attached by means of a rod 26 passing through the extension 22 and having a screw threaded end which screws into an opening in a cross bar 28 with which the nozzle is provided. The deflected end portion of the extension 22 also has a cross bar 29 through which the rod 26 passes. This rod has a milled head 30 by means of which the rod may be rotated so as to loosen the nozzle 24 and permit it to be adjusted up and down. As shown in Fig. 6 the nozzle 24 where it engages the extension 22 is provided with a circular flange 32 which fits rotatively over the circular end of the deflected portion of the extension 22. The

.outer end of the nozzle 24 is provided with a cap 34 which has a multiplicity of perforations 36. The cap 34 is hinged to the nozzle 24 by a rod 38 passing through

outstanding flanges

40 and 42 on the nozzle and on the cap. Opposite the hinge the flange 42 has a slot 44. A bolt 46 secured to the flange 40 is adapted to pass through the slot 44. A thumb nut 48 screws upon the threaded projecting end of the bolt 46 so that the cap 34 may be held securely in place or may be turned downwardly to permit access to the interior of the nozzle 24. The rear of the nozzle 24 is provided with a plug 52 to which two

wires

54 and 56 are attached. This plug supports a heating element consistin Woun thereon the

wires

54 and 56 being connected with the respective ends of the coil in customary manner. Mounted on the base 10 is a well known form of three-way switch 62 to which supply and return wires 64 and 66 are connected these wires being joined with any suitable source of electrical energy. The wire 56 is connected with the switch 62 while one side of themotor 14 is connected by a return wire 68 with this switch. The other side of the motor is connected by a supply wire 70 with the wire 56. The wire 54 is joined with thewire 68. It is evident from Fig. 7 that by turning the switch, current can be supplied to both the motor 14 and the resistance coil 60 or to either one of them separately. The two of a core 58 and a resistance coil 60 I the nozzle 24.

sides of the blower casing 12 have openings 7 .land 74 through which air is drawn in by the fan. A wire mesh screen 76 covers the opening 74 so as to prevent insertion of the fingers and injury thereto by the fan blades. The opening72 is protected by the motor 14.

The operation and advantages of my invention will now be obvious. When the cap 34 is swung down the heating element may be readily attached to the plug 52. When current is turned on the blower draws in air through the

central openings

72 and 74 and forces it out from the periphery of the casing through the extension 22 and. into The air accumulates around the heating element on account of the restricted delivery due to the perforated cap 36 and the annular flange 50, so that the air is highly heated before it has an opportunity to escape by being sprayed through the perforations. Upon turning the milled head. 30 the inclination of the nozzle may be varied as indicated by the dotted lines in Fig. 4. Itis obvious that by placing a liquid disinfectant or perfume adjacent the entrance openings into the blower casing the said liquid will be sprayed into the room when the blower is running.

When desired the switch ($2 may be turned so that the blower will operate without the heating element being energized.

I claim- 1. An electric heater for rooms comprising a blower whose casing has a central air inlet opening, an extension member leading from the periphery of the blower casing, the delivery end of said extension memtending out centrally her being deflected laterally at right angles, a forwardly-extending nozzle swivelly at- 'tached at its side to said deflected end, an

electric resistance element in said nozzle exfrom the rear end thereof, and means whereby current may supplied to said element.

2. An electric heater for rooms comprising a blower whose casing has a central air inlet opening, an extension member leading from the periphery of the blower casing, thedelivery end of said extension member being deflected laterally at right angles,aforwardly-extending nozzle swivelly attached at its side to said deflected end, an electric resistance element in said nozzle extendin out centrally from the rear end thereo means whereby current may be supplied to said element, and a perforated cap attached to the delivery end of said nozzle.

3. An electric heater for rooms comprising a blower whose casing has a central air inlet opening, an extension member leading from the periphery of the blower, the delivery end of said extension member being deflected laterally at right angles, a forwardly-extending nozzle having a short elbow extending out at right angles to the lengththereof'and swivelly attached to said deflected end, an electric resistance element in saidnozzle extending out centrally from the rear end thereof, and means whereby current may be supplied to said element.

4. An electric heater for rooms comprising ab'ase, a blower casing carried by said base and having a central air inlet opening, an extension member leading from the periphery of the blower casing, the delivery 'end of said extension member being deflected late-rally. at right angles, a forwardlyextending nozzle swivelly attached at its side to said deflected end, an electric resistance element in saidhnozzle' extending out centrally from the rear thereof, an electric motor mounted on said base, electric connections for said motor, electric connections for said resistance element, and a switch in said connections whereby current may be supplied to both said motor and resistance element and to either one of them separately.

In testimony whereof I hereunto atlix'my signature.

MAX SKOLN'I K.