US2408750A

US2408750A - Temperature indicating electric iron

Info

Publication number: US2408750A
Application number: US478223A
Authority: US
Inventors: Bolte Leo Roman
Original assignee: Individual
Current assignee: Individual
Priority date: 1943-03-06
Filing date: 1943-03-06
Publication date: 1946-10-08
Anticipated expiration: 1963-10-08
Also published as: GB630441A

Description

Oct. 8, 1946. L. R. BOLTE TEMPERATURE INDICATING'ELECTRIC IRON Filed March e, 1945 g zyi izai, 1z

INVENTOR.

l/AZ/ L w E0 ROMAN 1901.7:

ATTQR/VEX Patented Oct. 8, 1946 TEMPERATURE INDICATING ELECTRIC IRON Leo Roman Bolte, Staten Island, N. Y.

Application March 6, 1943, Serial No. 478,223

1 Claim. 1

This invention relates to electric sadirons with temperature gauges.

An object of this invention is to provide a sadiron of the character described having an electric heating element, and a temperature gauge to indicate the temperature of the iron.

Another object of this invention is to provide an iron of the character described having means to automatically switch off the heating element when the temperature of the iron reaches a predetermined temperature, and means to manually adjust such predetermined temperatures. Thus the user may regulate the temperature above which the iron will not heat so that the iron can be used for different materials with safety.

Still another object of this invention is to provide a strong durable and compact iron or" the character described which shall be relatively inexpensive to manufacture, easy to manipulate and adjust, and which shall yet be practical and efiicient to a high degree in use.

Other objects of this invention will in part be obvious and in part hereinafter pointed out.

The invention accordingly consists in the features of construction, combinations of elements, and arrangement of parts which will be exemplified in the construction hereinafter described, and of which the scope of application will be indicated in the following claim.

In the accompanying drawing, in which is shown one of the various possible illustrative embodiments of this invention,

Fig. 1 is a perspective view of an iron embodying the invention;

Fig. 2 is a top plan view of said iron with parts broken away and in cross-section; and

Fig. 3 is a side-elevational view of the iron with parts broken away.

Referring now in detail to the drawing, designates a sadiron embodying the invention. Said iron comprises a body II and a handle 12. At the back of the body II is a socket 13, to receive one end 14 of an electric cord connector. In the socket l3 are a pair of prongs I5, 16 to be received in the connector [4.

In the body is a cavity l3. Therein is an electric resistance coil l9 connected at one end to prong I5. The other end of coil 19 is connected to one end 20 of a thermostatic element 2|. Said element 2| is of the bi-metal type. One end thereof is pivoted at 20 to a vertical pin fixed to cover plate 30. Said element 2| has an arm 24 from which there extends an arm 25 at an angle thereto. Arm 25 has a free end 26 pivoted to an arm 21 fixed to a vertical shaft 28 Journalled in a cover plate 30 covering a cavity 3! at the top of the iron. Shaft 28 passes through cover plate 3s]. Fixed to the upper end thereof is a pointer 33. On cover plate 30 is a dial 34 calibrated for temperature.

Beneath arm El and contacting the same is a terminal 35 connected by wire 36 to the other prong I6. When arm 2? contacts terminal 35, the circuit is complete through coil i9 to heat the same. At the same time element 2| is also heated and it then opens up causing the free end 26 to move and swing arm 21, to thereby also move pointer 33 over dial 34 to indicate the temperature. When the temperature is such that arm moves beyond and off terminal 35, the circuit is broken. As the element cools arm 21 swings back to element 35. Cover plate 30 has a curved slot 43. Slidably mounted on cover plate 30 and passing through slot 49 is a, member 4| attached to terminal 35. By sliding member 4! in slot 49, the position of terminal 35 can be adjusted. The user may thus set the maximum temperature for the iron.

It will thus be seen that there is provided a device in which the several objects of this invention are achieved, and which is well adapted to meet the conditions of practical use.

As various possible embodiments might be made of the above invention, and as various changes might be made in the embodiment above set forth, it is to be understood that all matter herein set forth or shown in the accompanying drawing is to be interpreted as illustrative and not in a, limiting sense.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

A temperature indicating device for an electrically heated appliance, said appliance including a body portion having a cavity with electrical heating means in said cavity and a cover plate on said body portion over said cavity, said device comprising a dial having a curved slot fixed to said cover plate, a substantially U-shaped thermoresponsive element in said cavity, said element having one leg of the U pivoted to the cover plate,

a vertical shaft journalled in the cover plate, a