US1479729A

US1479729A - Iron

Info

Publication number: US1479729A
Application number: US565490A
Authority: US
Inventors: Herbert L Mitchell; John W Slate
Original assignee: Individual
Current assignee: Individual
Priority date: 1922-06-02
Filing date: 1922-06-02
Publication date: 1924-01-01
Anticipated expiration: 1941-01-01

Description

Jan. 1, 1924 H. MITCHELL ET AL IRON Filed June 2. 1922 2 Sheets-Sheet 1 WITNESS:

ATTORNEY Jan. I, 1924 1,479,729

H. L. MITCHELL ET AL IRON Filed June 2. 1922 2 Shets-Sheet 2 munmmnmm INVENTOR NESS:

Patented Jan. 1, .1924.

UNITED STATES PATENT OFFICE.

HERBERT L. MITCHELL AND JOHN W. SLATE, OF WALNUT COVE, NORTH CAROLINA.

IRON.

Application filed June 2,-

To all whom it may concern:

Be it known that We, HERBERT L. MITCHELL and JOHN WV. SLATE, citizens of the United States residing at Walnut Cove, in the county of Stokes and State of North Carolina, have invented new and useful Improvements in Irons, of which the following is a specification. v i

This invention relates to improvements in electric irons, the general object of the invention being to provide means for breaking the circuit to the heating coils of the iron as soon as the handle is released by the operator, thus preventing the iron from being overheated and doing damage by failure to cut off the current when the iron is not being used.

Another object of the invention is to provide means for preventing the current from being broken when the handle is released by placing the iron upon its end, thus providing means for initially heating the iron without holding the same in the hand.

This invention also consists in certain other features of construction and in the combination and arrangement of the several arts, to be hereinafter fully described, ilustrated in the accompanying drawings and specifically pointed out in the appended claim.

In describing the invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which Figure 1 is a side view of the invention.

Figure 2 is an end view.

Figure 3 is a longitudinal sectional view.

Figure 4 is an enlarged detail view of the switch means.

Fi re 5 is a diagrammatic view of the circuit.

In these views 1 indicates the. body of the iron and 2 the handle thereof. The terminals are shown at 3, said terminals being connected with the heating coils 4 in the usual manner, though in carrying out the invention we place a pair of spaced contact blocks 5 in the connection of one terminal with the coils, The adjacent faces of these blocks are inclined to rovide'a tapered space 6 between them. I X pin 7 is movably carried by a bushing 8 which is secured in the rear part of the body of the iron by the nuts 9.

1922. Serial No. 565,490.

The inner end ofthis pin is adapted to enter the tapered space 6 and engage the inclined faces of the blocks so as to bridge the space and electrically connect one block with the other. This point is insulated from the rest of the pin, as shown at 10. The head of the Inn is provided with a groove 11 to receive the forked end of a spring strip 12.. This strip is looped upon itself, each limb of the loop having a hand grip connected therewith, and then the strip is bent to form one of the supports for the handle, the other support being formed by a strip 14. Thus the hand grips are held in spaced relation by the looped part of the spring strip and this strip will hold the pin in its outward position so that its inner end will be out-of engagement with the contact blocks. \Vhen the handle is gripped by the hand of the user the two parts of the handle will be pressed together and this action will cause the forked end of the spring strip to move the pin inwardly so that its ends will engage the contact blocks and thus complete the circuit to the coils when the terminals are electrically connected with a source of supply. The current will continue tofiow as long as the handle parts are pressed together but as soon as these parts are released the spring strip will move the pin outwardly and break the circuit to the coils. Thus there is no danger of the iron becoming overheated when not in use through the operator forgetting to turn the switch. lVhen it .is desired to permit the current to flow when the iron is not being used it is simply necessary to turn the iron upon its end when the weight of the parts resting upon the pin will force the pin inwardly. causing its end to engage the blocks and thus complete the circuit to the coils.

It is thought from the foregoing description that the advantages and novel features of the invention will be readily apparent.

We desire it to be understood that we may make changes in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claim.

What we claim is An electric iron of the class described comprising a pair of blocks located within the iron, one of which is connected with the heating coils and the other with one of the terminals, a bushing carried by the body of the iron, :1 pin slhlably carried by the bush-.

ing and having one end adapted to engage the blocks toelertrically connect the blocks 5 together, a movable handle part, a spring strip connecting said handle part with the other part and having a portion connected