US2074865A - Lamp and heater - Google Patents

Description

March 23, 1937. J. s. SCHARF LAMP AND HEATER Filed May 4, 1932 VENTOR Patented Mar. 23, 1937 UNITED STATES PATENT OFFICE 11 Claims.

This invention relates to an improvement in electrical apparatus, and the same has for its object to provide an article which may be used for illuminating purposes or for heating, toasting or cooking. The article may also be used simultaneously both for illuminating and heating, toasting or cooking.

My invention consists of a novel construction y of a combined electric heater and electric table 10 lamp operative in the same circuit, wherein I utilize the hollow base of the lamp structure as an electric heater, so that when the lamp is inverted the heater can be operated to heat an article or toast bread or heat the room. 15 A further object of this invention is to construct a table lamp with a hollow base, the latter being utilized as a heating compartment and adapted to operate simultaneously with the lamp.

A further object of this invention is to construct a table lamp with a hollow base, the latter being utilized as a heating compartment, and means adapted to connect with the heating device to complete the circuit and arranged in such a manner as to prevent the operation of the heater when lamp and heater are resting in a normal position.

A further object of this invention is to provide a lamp with a framework surrounding and projecting above the bulb, the framework being adapted to support the lamp when inverted and permit slices of bread being placed underneath and around the bulb for warming after being toasted. If desired the power of bulb can be regulated by a rheostat.

A further object of this invention is to provide a lamp with a hollow base, wherein the base isr formed with a setback which functions as a support for a heating unit. The entire heating unit and lamp are held together by a single screw.

With the foregoing and other objects in view the invention consists in the combination and arrangement of parts hereinafter described and claimed, andwhile the invention is not restricted to the exact details of construction illustrating a practical embodiment thereof reference is had to the accompanying drawing in which like reference characters designate the same parts in the several views, and in which:

Figure 1 shows a view of lamp and shade.

Figure 2 shows a bottom view of lamp disclosing the heater.

Figure 3 is a vertical view of lamp in inverted position with base partly in section.

-Figure 4 isla detail of switch member.

Figure 5 is a cross` section of Figure 4, on the line 5 5 somewhat enlarged.

Figure 6 is a diagrammatic view of the wiring arrangement.

Figure 7 is a modified method of arranging the switch.

This invention is an improvement of the device shown and described in Patents #1,550,100 and #1,817,040.

Referring to the drawing, the numeral I, denotes a standard for a lamp having its lower portion formed into a hollow base 2. The upper part .of the standard I, is provided with a neck 3, of smaller diameter than the standard I, thus producing the step 4.

A sleeve 5, somewhat longer than the neck 3, is arranged to be tightly fitted on the neck 3, so as to rest on step 4. To the sleeve 5, there are aflixed several supports 6. To the other end of the supports there is fixed by welding or otherwise a ring 1.

Figure 3 shows the device in an inverted position with shade removed. In this position the base 2, is utilized as a heater. The base 2, is provided with a ridge 8, which supports an asbestos board 9. Ar grid I0, provided with an outer ring I I, is adapted to t so that the ring is directly over the ridge B.

The grid I0, has a plurality of wires I2, one end attached to the ring II, and the other end to a perforated washer I3.

The asbestos board 9, is provided with a central perforation I4, and has attached to it a heating unit made of nickel chromium or resisting wire I5, and is held to the board 0, by terminals I6 and I1, and by hooks I8, held to the asbestos 9, by means of rivets I9.

The terminal I6, comprises a screw 20, and a washer 2I, holding down one end of the resistance wire I5, and held tight by a nut 22, on the back of the board 9. The terminal I'I, is arranged oppositely to terminal I6, in that, the head of the screw 23, enters through the back of theY board 9; and holdsfthe other end of the resistance wire I5, by nut 24. The screw 23, projects considerably above the resistance wire I5, for purpose to be described later.

The grid I0, is held in place by means of a screw 25, over a. washer 26. A mica washer 21, under washer I3, is provided against short circuits, also a lava sleeve 28, surrounds the screw 25, for similar protection. threaded into a cap 29, and tube 30. The tube 30, has a side opening 3|. The other end of tube 30, is threaded to receive the lower end The screw 25, isy

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of socket 32, which is placed over the sleeve 5. It is thus seen that by tightening the screw 25, it will draw the socket 32, down against the sleeve 5, and thereby hold the parts of the lamp tightly together.

The wiring arrangements are as follows: A pair of wires 3S, and 34, are adapted to enter the base of the lamp 2, through a perforation 35 protected by a bushing tube 30, at 3i, and are attached to the socket connectors 36', and 3l'. A wire 38, is attached to the screw 2b of terminal i5, and held by nut 39. The other end of the wire 38, is attached to wire 33 at the junction Ll. A wire lli, is attached to wire 35, at junction 42, and then passes through a perforation 3, in the board 9, which is protected by a grommet lit. All wires used in the assembling are asbestos covered.

The other end of the wire lil, is provided with a switching member 1?.-5, cooperating with screw 23, in forming a switch. The wire di, is bared at the end and enters a porcelain tube 46, through an opening lll, at one end, said tube being completely open at the other end d8. rEhe bare wire is attached to a spring clip 49, at the screw 5G. in order to hold the clip tightly within the tube 136, a portion oi the clip structure 5G' is thinned and turned atwise so that it is in contact with the rough inner porcelain in the tube 4E, and when the clip is forced in, it will stay on account of the friction.

The switch member @5, is arranged to t over the screw of terminal il. The t can either be a tight t or preferably a loose t and depending on the tension produced in the wire 4l, where the tendency is to straighten out at the loop 5l, to effect the proper contact.

As shown in Figure S, the switch member 4-5, projects beyond the base 2, this is for the purpose of forming an interference with the setting of the lamp with the heater in action, in other words before the lamp can be normally set the switch member 5, must be disconnected.

Of course the switch member Q5, could be made small and only the wire 4l, project beyond the base 2, which would also serve as an indicator and in a lesser degree interfere with the setting of the lamp normally when the heater is in operation. When the switch member i5, is not in use it is arranged to be placed under a wire l2, of the grid EG.

The socket may be of the ordinary key type 4l', or if desired it may be of the type known as the Dimalite which is of the rheostat type illustrated diagrammatically in Figure 6 at 48.

The bulb 52, is arranged to project so that its tip 53, should be some distance from the ring so that a plate M, with toast can be placed beneath. Slices of toast 55, can also be placed so as to lean on the bulb. If the rheostat type of socket is used the degree of heat can be increased so as to keep the toast very warm.

A shade EL3, with ordinary spring clip which springs on the bulb is used as described in Patent #1,817,040.

Figure 7 illustrates an alternate method of switching arrangement that leaves the base area clear of any switches or obstructions. In this modiiied form the heating unit and asbestos board are similarly arranged. Within the hollow portion of base there is placed a. vertical insulation board 56, on which a rotatable metal bar 57, in electrical connection with the resistance unit is pivoted and held by spring 58. A bar 59, in contact with the other portion oi the electrical circuit is also placed on the board 56. A hooked arm 6D, attached to and insulated from bar 5l, is provided with a hook El. In operation when the heater is in use, the arm 60, is pulled out till the hook SI, is caught on the metal 62, and is so arranged that the bar 5l', is in contact with bar 59, and at that time the end of the arm Sil, projects beyond the base of lamp, and accordingly will interfere with the normal setting of lamp when the heater is in operation.

What I claim ierl. An electric lamp having a base formed into a hollow compartment provided with an open face, an electric heater mounted within the base, means for supporting the lamp in an inverted position thereby exposing the heater, said heater comprising an insulating board, a resistance heating wire held on said board, a terminal at each end of said wire, one oi said terminals projecting above the board towards the edge of the open face, a wiring arrangement within the hollow compartment, two wires arranged to connect with the terminals, one of said wires connected to one ci the terminals below the board within the compartment, the other wire penetrating the said board provided with means adapted to function as a connecting switch with the projecting terminal above the board, said means projecting above the edge of the open face when the switch is on.

2. An electric lamp having a base, an electric heater mounted within the base, means for supporting the lamp in an inverted position thereby exposing the heater, a switch arranged within the base, said switch comprising a plurality of members operatively connected to the heater, one of said members arranged to project beyond the edge of the base so as to interfere with the normal setting of the lamp when the heater is in operation.

3. An electric lamp having a base, an electric heater mounted within the base, means for supporting the lamp in an inverted position therebyv exposing the heater, a switch arranged within the base, said switch comprising a plurality of members operatively connected to the heater, one of said members being provided with a circuit wire that projects beyond the edge of the base so as to interfere with the normal setting of the lamp when the heater is in operation.

4. An electrclamp having a base, an electric heater mounted within the base and surrounded by the lower portion or the base, means for supporting the lamp in an inverted position thereby exposing the heater, a switch arranged within the base comprising a plurality or" members operatively connected to the heater, one of said members arranged to project beyond the edge of the lower portion of the base when heater is in operation, a grid of several wires spanning the resistance wire and spaced above the board, enabling any one wire to retain the projecting switch member when heater is not in operation.

5. The combination oi an electric lamp and an electric heater, mounted respectively at opposite ends of a standard, a switch comprising a plurality of members operatively connected to the heater, means for supporting the standard in a normal position as in an ordinary lamp, means for supporting the standard in an inverted position, one oi said switch members arranged to interfere with the normal positioning of standard when the heater is in operation.

6. The combination of an electric lamp and an electric heater, mounted respectively at opposite lll ends of a standard, a switch comprising a plurality of members operatively connected to the heater, means rior supporting the standard l in a normal position as in an ordinary lamp, means for supporting the standard in an inverted position, one of said switch members being provided with means arranged to interfere with the normal positioning of standard when the heater is in operation.

'7. An electric lamp having a base formed into a hollow compartment provided with an open face, an electric heater mounted within the base, means for supporting the lamp in an inverted position thereby exposing the heater, said heater comprising an insulated board, a resistance or heating wire held on said board, a terminal at each end of said wire, one of said terminals projecting above the board towards the edge of the open face, a wiring arrangement within the lamp base, one of said wires connected to one terminal and the other wire penetrating the said board and connected with an insulated metallic receptive means for said projecting terminal thereby functioning as a switch.

8. An electric lamp having a base formed into a hollow compartment provided with an open face, an electric heater mounted within the base, means for supporting the lamp in an inverted position thereby exposing the heater, said heater comprising an insulated board, a resistance or heating wire held on said board, a terminal at each end of said wire, one of said terminals projecting above the board towards the edge of the open face, a wiring arrangement within the lamp base, one of said wires connected to one terminal and the other wire penetrating the said board and forming a loop'and connected with an insulated metallic loose receptive means for said projecting terminal, the elasticity in said wire about said loop forcing a positive contact between said receptive means and projecting terminal.

9. A heating unit set in a hollow compartment having an open face, said heating unit comprising an insulating board, an opening in said board, a current carrying wire terminating in an electric connecting plug above said board passing through said opening into said compartment, a resistance wire held on said board, a terminal at each end of said wire, one of said terminals projecting below the board into said compartment and there connecting to a complementary current wire, the other terminal projecting above the board towards the open face and adapted to form a 'connecting member with said plug.

l0. In a lamp, a base, a socket and an intervening member to support the lamp in an inverted position held tight between said socket and base, a heater arranged within the base, comprising an insulating board resting against the sides of the base, a resistance wire on said insulating board, a grid member spanning said resistance wire and holding said board against the base, and means for mechanically connecting the grid to said socket.

11. A heater, comprising a hollow compartment having a shoulder, an insulating board within the compartment and resting on said shoulder, a

resistance wire on said board with terminals projecting above and below said board, a grid member comprising radiating wires spanning said resistance wire and means for holding said board against said shoulder, a set of electric wires for furnishing current entering said compartment one of said wires being attached to the lower terminal of said resistance wire, the other wire projecting through an opening in said insulating board and being attached to a porcelain covered attachment plug, said plug being adapted to coact with the other terminal that projects above the board for completion of the circuit and when not in use the plug being adapted to fit between one of said wires of the grid and the! insulating board.

JACOB STUART SCHARF.

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