US1524417A

US1524417A - Electrically-heated utensil

Info

Publication number: US1524417A
Application number: US646753A
Authority: US
Inventors: Maurice L Warner
Original assignee: Manning Bowman & Co
Current assignee: Manning Bowman & Co
Priority date: 1923-06-21
Filing date: 1923-06-21
Publication date: 1925-01-27
Anticipated expiration: 1942-01-27

Description

Jan. 27, 1925.

M. L. WARNER ELECTRICALLY HEATED UTENSIL Filed June 21, 1923 [III HHIIIIIIHI II 1] I14 INVENTOR BY I 1 g ze, ATTORNEYS I it,

Patented Jan. 27, 1925.

- UNITED STATES 1,524,417 PATENT OFFICE.

MAURICE L. WARNER, OF MERIDEN, CONNECTICUT, ASSIGNOR 'IO MANNING, BOWMAN & COMPANY, 01 MERIDEN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

ELECTRICALLY-HEATED U'IENSII.

Application filed June 21, 1923. Serial No. 848,753.

- utensil when the temperature reaches a predetermined degree.

An object of the invention is to provide a novel and improved device of this character which is particularly applicable to a percolator.

Another object ofthe invention is to provide a device of this character having novel and improved means for supporting a fuse which is em loyed to cut off the current.

Another 0 ject of the invention is to pro vide a novel and improved fuse for a device of this character.

The following is a description of my invention, reference being had to the accompanying drawing, in which,

Figure l is a sectional elevation of the lower'portion of a percolator embodying the features of the invention in their preferred form;

Fig. 2 is a detail bottom plan view of a portion of the device illustrated in Fig. 1;

Fig. 3 is a sectional view taken on the line 3-3 of Fig. 2; and

Fig. 4 is a detail view in perspective of the fuse that is employed in the device.

The percolator illustrated in the drawings is provided with a base 2, a liquid receptacle 4, a heating chamber 6, a heating coil 8 surrounding the heatin chamber, and an electric plug socket 10, .w ich parts may be of a well known construction. As shown the percolator is further provided with a depending heat retaining sleeve or skirt 12 surrounding the heating chamber and coil, and spaced a distance therefrom. This skirt 12 is provided with an outwardly turned flange 14 on its lower end to which is secured, by screw bolts 16, a disk 18 of insulating material that is spaced a distance below the lower, end of the heating chamber, the disk 18 and the skirt 12 forming a heat retaining casing for the heating chamber 6. The space between the lower end of this casing and the base 2 is closed by an annular member 20 which is secured to the under side of the disk 18 by means of the screw boltsl6. is provided with a vertical cylindrical wall portion 22, into which is fitted a removable cover or closure 24, the bottom wall of the closure being spaced from the underside of the disk 18.

The disk 18 is provided with a transversely extending rectangular aperture 26. A pair of

electrical contact members

28 and 29 that are formed of resilient strips preferably of nichrome are secured by rivets 30 to the under side of the disk 18. These

contact strips

28 and 29 are set into sunken portions in the disk 18 and their rear ends are provided with apertures through which binding screws 32 extend, the binding screws being screw-threaded into inserts 34 in the disk 18. The contact strip 28 is electrically connected with one of the terminals of the heating coil 8 by a conductor 38 secured to the binding screw 32 associated with said contact strip, the other terminal of the heating coil being connected by a conductor 39 with one of the binding posts of the plug socket 10. The contact strip 29 is electricalconnected wlth the other binding post of the plug socket by a conductor 40 secured to the binding screw 32 associated with said contact strip 29.

The

conductors

38 and 40 extend through apertures 42 in the disk 18. The inner end portions of the

contact strips

28 and 29 are m the form of hooks 44 that open downwardly and are arranged in the rectangular aperture 26. The hooks 44 are for the purpose of removably securing a fuse in the rectangular aperture 26. As shown, this fuse is provided with a rectan ular central portion 46 of lead or other fusible material having trunnion-like projections 48 on its ends integral therewith. Cylindrical tubes or sleeves 50 of brass or other metal having a high fusing point embraces the projections 48. The s eeves 50 and the hook portions 44 of the contact strips are so constructed and arranged as to enable the end of the fuse to be pressed into said hook portions so as to cause the hooks to grip them, and thus securely hold the fuse in the aperture 26. a

The brass tubes or sleeves 50 insure the fuse breaking cleanly and thus obviates any The member 20 dan er of arcin The rectangular body port ion 46 of t e fuse when swung into vertical position as shown in the drawings enables it to be easily grasped by the fingers of the user when removin or replacing the fuse. The closure 24 an the vertical wall portion of the annular member 20 completely encloses the under side of the disk 18 and the fuse and contact strips mounted thereon, and

The complete device is held in position by the three screws 16 and it is only necessary to remove the closure 24 to obtain access to these screws, the fuse and the contact strips. By making the disk 18 of insulating material the disk not only serves to insulate the

contact strips

28 and 29 from each other, but also serves as a heat insulator.

As will be evident to those skilled in the art, my invention permits of various modifications without departing from the spirit thereof or the scope of the appended claims.

What I claim is:

1. An electrically heated utensil comprising an electrical heating unit and electrical connections in circuit therewith comprising a member of fusible material, sleeves of metal having a'relatively high fusing point embracing the ends of said member and means for. holding said member comprising electrical contact members engaging said sleeves.

2. An electrically heated utensil comprising an electrical heating unit, and electrical connections in circuit therewith comprising a member of fusible material having reduced projecting ends, sleeves of meta having a relatively high fusing point embracing said ends, and means for holding said member comprising electrical contact members having portions of resilient material for gripping said sleeves.

3. An electrically heated utensil comprising an electrical heating unit, a casing enclosing a portion of said unit having its bottom wall provided with an opening therein, and electrical connections in circuit with said heating unit comprising a fuse arranged in said opening, and means for holding said fuse, comprising contact members having downwardly opening portions of resilient material for receiving and gripping the ends of the fuse so as to enable the revents heat from escaping from the perco ator through the aperture 26.

fuse be removed and replaced from said opening. I

4. An electrically heated utensil comprising an electrical heating unit, acasing enclosing a Hortion of said unit having its bottom we of insulating material and provided with an openin therein, electrical connections in circuit with said heating'unit comprising a fuse arranged within said opilening, and means for olding the fuse w ereby the fuse may be removed and replaced from the under side of said bottom wall, and a removable closure for the under side of said bottom wall.

5. An electrically heated utensil comprising an electrical heatingunit, a casing enclosin said unit havingan opening in one wall t ereof, and electrical connections in circuit with said heating unit comprising a fuse arranged within said opening, and means for supporting said fuse comprising electrical contact members of resilient material having hook-shaped portions opening glownwar'dly for receiving the ends of the 6. An electrically heated utensil comprising an electrical heating unit, a casing enclosing said unit having its bottom wall formed of insulating material and having an opening therein, and electrical connections in circuit with said unit comprising a fuse arranged within said opening, and means for supporting said fuse comprising contact strips of resilient material secured to said bottom wall and having downwardly opening hook-shaped portions arranged within said opening for receiving the ends of said fuse, and a removable closure for the under side of said bottom wall.

7. An electrically heated utensil comprising an electrical heating unit, a casing enclosing said unit having its bottom wall formed of insulating material and having an opening therein, and electrical connections in circuit with said unit comprising a fuse arranged within said opening, and means for supporting said fuse comprisin electrical contact members secured to sai bottom wall and adapted to hold said fuse Within said opening by engagement with the ends of said fuse and to permit said fuse to be removed from the under side of said bottom Wall.

MAURICE L. WARNER.