US2582781A

US2582781A - Bottle warmer

Info

Publication number: US2582781A
Application number: US33072A
Authority: US
Inventors: Arne B Johnson
Original assignee: Hankscraft Co
Current assignee: Hankscraft Co
Priority date: 1948-06-15
Filing date: 1948-06-15
Publication date: 1952-01-15
Anticipated expiration: 1969-01-15

Description

Jan. 15, 1952 2,582,781

A. B. JOHNSON BOTTLE WARNER Filed June 15, 1948 INVENTOR. Qrzzelidbiznaom circuit of the bottle warmer. late to various features of construction and ar- Patented Jan. 15, i952 BOTTLE WARMER Arne B. Johnson, Madison, Wis., assignor to Hankscraft Company, Madison, Wis., a corporation of Wisconsin Application June 15, 1948, Serial N0. 33,072

9 Claims.

orated, the operation of the device is automatically terminated and it thus has a definite time period of operation adapted to heat the milk in the bottle to the desired temperature without attention on the part of the operator.

The principal object of the present invention is to provide a bottle warmer having associated therewith an illuminating device which will indicate to the operator that the device is connected to the supply circuit. If the bottle warmer be of the spaced electrode type, the flow of electric current will stop when the water is evaporated but the illuminating device will continue to function, thereby reminding the attendant that the device is connected in the circuit. The device may then be disconected from the supply circuit or it may continue to operate to serve as a night light of low intensity while the baby is being fed. A further advantage of the invention is that the device may be employed as a night light independently of any warming or feeding operations.

A further object of the invention is to provide an electric bottle warmer having embodied therein a translucent wall portion behind which is located an electric lamp adapted to operate while the bottle warmer is connected in the supply circuit. Stillanother object is to provide an electric bottle warmer adapted to contain the bottle and the heating elements and provided with a translucent supporting base containing an illuminating device operated by the supply Other objects rebodiment is illustrated. In the drawings,

Figure 1 shows a side elevation of the improved bottlewarmer of the present invention having a. baby's bottle mounted therein;

; 8- 2 sh w P. Pla flav i e b l warmer illustrated in Fig. 1 with the bottle removed;

Fig. 3 shows an enlarged vertical axial section taken through the bottle warmer illustrated in Fig. 1;

Fig. 4 shows a horizontal section taken on the line 4--4 of Fig. 3; and

Fig. 5 shows a partial vertical section taken on the line 5-5 of Fig. 3.

As illustrated in the drawings, the invention is embodied in a bottle warmer comprising a vessel I0 formed of porcelain or other suitable non-metallic material having an annular wall Illa forming an internal chamber lob in which the babys bottle H is adapted to be supported during the heating operation. This chamber lob is adapted to contain a measured quantity of water which is heated by the passage of current between spaced electrodes located in the bottom of the chamber. In the embodiment illustrated these electrodes are in the form of flat plates of the type disclosed in United States Letters Patent of Marshall W. Hanks, No. 2,061,837, dated November 24, 1936, and No. 2,347,825, dated May 2, 1944. The lower electrode is in the form of a circular flat metal plate l2 which rests upon the bottom wall I00 of the vessel, having a central aperture which is engaged by an integral lug formed in the bottom wall lllc of the vessel. The upper electrode is in the form of a fiat circular metal plate l3 which is spaced upwardly from the lower electrode I2 by non-metallic lugs Illd which are formed on the bottom wall lo and which project upwardly through apertures formed in the lower electrode l2. The upper electrode I3 is provided with a plurality of apertures I3a which are adapted to permit the ready escape of bubbles produced by the vaporization of water in the region between the two electrodes. On the upper electrode l3 there is mounted a supporting plate l4, formed of porcelain or other suitable non-metallic material, which serves as a support for the bottle II and also prevents accidental contact of the fingers of the operator with the electrodes. This plate I4 is provided with a plurality of apertures Ma which permit the escape of bubbles from the region beneath it and it is of such diameter that it is spaced inwardly to a slight extent from the annular wall of the chamber lllb. The insulating plate I4 is provided with supporting posts I lb which are formed integrally therewith and which rest upon the upper electrode l3 to which they are secured in any suitable manner.

N The lower electrode I2 is provided with a pair of attached metal posts l5 and I6 which extend downwardly therefrom through apertures formed in the bottom wall lilo of the vessel and terminate within the annular depending flange we of the vessel. One of these posts I5 is threaded for engagement by nuts I! by which it is connected to a supply conductor 18 leading from one terminal of the usual alternating current electric lighting circuit. The other post It is engaged at its lower end by a nut 19 and its lower end is sealed by a body of insulating material 20, both the nut l9 and the sealing material 20 being located within a non-metallic shell 2i. The other supply conductor 22 leading from the other terminal of the supply circuit is connected by means of nuts 23 to a central terminal post 24 which extends upwardly through the bottom wall [0c of the vessel, and through a central aperture in the bottom electrode 12 to form a threaded engagement with the central portion of the upper electrode l3. In this way the electrodes i2 and I3 are connected in the supply circuit through the conductors i8 and 22 which are adapted to form the usual flexible electric cord with a detachable plug connected to the free ends thereof. When a measured quantity of water is placed in the chamber 10b of the vessel, with the conductors connected to the supply circuit, a current will flow through the water between the spaced electrodes until the water has been evaporated to the point of substantial dryness.

The vessel I0 is supported by a hollow cups'haped base member 25 formed of translucent plastic material and having an upwardly extending annular wall 25a which is outwardly flared to a slight extent and which is adapted to support the vessel I0 through the agency of an annular shoulder l0) formed on the outer side of the vessel adjacent the upper margin of the annular depending flange Hie. An annular downwardly flaring metallic reflector 21 is provided at its inner margin with an angular flange 21a which seats against the shoulder I01 above the upper edge of the wall 25a of the base so that the reflector is thus clamped between the base and the vessel when these parts are secured together. The reflector 21a flares downwardly and outwardly and terminates in an annular flange 21b of limited extent which converges downwardly and inwardly at a point some distance outwardly from the wall 25a. This base 25 has an annular rib 25b at its bottom which is adapted to rest upon a table or other support and the base is secured to the vessel 10 by a connection extending to the central terminal post 24. This connectionincludes a non-metallic plug 28 which is centrally apertured for threaded engagement with. the lower end of the post 24 at its upper end and for threaded engagement at its lower end with a screw 29'. This screw extends through an internal aperture in a cap member 30 which is mounted in a circular opening formed in the central part of the bottom wall of the base 25 and the cap member has an outwardly extending flange 30a which underlies the bottom wall of the base so that when the screw 29 is tightened within the threaded bore of the lug 28, the base is secured to the vessel l0 and the reflector 21 is clamped in position. The annular wall 25a of the base is provided at a suitable point with an aperture 250, shown in Fig. 1, through which the supply conductors l8 and 22 lead from the source' of supply. To prevent rotation of the base 25 with respect to the vessel It, the base is provided with an inwardly projecting lug 25d, shown in Fig. 4, which engages a notch 109 formed in the depending flange Ifie of the vessel.

In the chamber within the depending flange Hie oi the vessel and within the annular wall 25a of the base, there is mounted an electric lamp socket 33 having terminals which are connected to the terminal posts [5 and 24 by conductors 34 and 35, respectively, as shown in Fig. 4. This socket 33 has mounted therein an electric light bulb 36 and this bulb is actuated to illuminate the space within the base 25 when the conductors i8 and 22 are plugged into the supply circuit. This illuminating efiect is transmitted through the translucent annular wall 25a of the base. thus illuminating the surface of the table on which the bottle warmer is located and attracting attentionto the fact that the device is connected in the supply circuit. The reflector 21 serves as a shield to prevent the transmission of light rays directly from the base 25 in an upward direction from the base so that a soft illuminating effect is produced which is not objectionable to persons in the room. This illuminating efiect continues as long as the supply conductors l8 and 22 are connected in the supply circuit, even though the heating of the bottle H has been arrested by the evaporation of the water in the chamber lUb.

Although one form of the invention has been shown and described by way of illustration, it will be understood that it may be constructed in various other embodiments which come within the scope of the appended claims.

I claim:

1. A bottle warmer comprising a vessel, means for heating a bottle positioned in said vessel, a hollow base for supportin said vessel, an illuminating device located in said base, and a light shield extending around the upper exterior of said base. 7

2. A bottle warmer comprising a vessel, means forheating a bottle positioned in said vessel, a hollow translucent base supporting said vessel, and an illuminating device located in said base.

3. A bottle warmer comprising a vessel, means for heating a bottle positioned in said vessel, a hollow translucent base supporting said vessel, an illuminating device located in said base, and a shield extending around the upper part of said base and extending downwardly and outwardly therefrom.

4. A bottle warmer comprising a vessel, means for heating a bottle positioned in said vessel, a hollow base for supporting said vessel, an illuminating device located in said base, a light shield extending around the upper part of said base,

and a single fastening means for securing said base and said shield to said vessel.

5. A bottle warmer comprising a vessel, electrically operated means positioned in said vessel for heating a bottle, a base for supporting said vessel, means within said base for forming electrical connections with said electrically operated means, and an independent signaling device apart from said electrically operated heating means connected to said electrical connections beneath said vessel.

6. A bottle warmer comprising a vessel, spaced electrodes in said vessel, a translucent base supporting said vessel, supply conductors extending through said base and connected to said electrodes, and illuminating means mounted in said base and connected to said supply conductors.

'1. A bottle warmer comprising a vessel, spaced electrodes in said vessel, an inverted cup-shaped translucent base for supporting said vessel, supply conductors leading through said base and connected to said electrodes, illuminating means mounted in said base and connected to said electrodes, and an annular shield extending around the upper part of said base and having a portion thereof extending between said base and said vessel.

8. A bottle warmer comprising a vessel, spaced electrodes in said vessel, an inverted cup-shaped translucent base for supporting said vessel, supply conductors leading through said base and connected to said electrodes, illuminating means mounted in said base and connected to said electrodes, an annular shield extending around the upper part of said base and having a portion thereof extending between said base and said vessel, and means extending through the bottom of said base and attached to said vessel for securing said base and said shield in place with respect to said vessel.

9. A bottle warmer comprising a vessel, spaced electrodes in said vessel, a translucent base supporting said vessel, supply conductors extending through said base and connected to said electrodes, illuminating means mounted in said base and connected to said supply conductors, a single connection through the bottom of said base for securing said base in place on said vessel, and means for preventing rotation of said base with respect to said vessel.

ARNE B. JOHNSON.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 697,825 Fisk Apr. 15, 1902 1,699,001 Lauderdale Jan. 15, 1929 1,837,000 Wertz Dec. 15, 1931 2,417,802 Longstreet Mar. 18, 1947