US2373248A - Circuit control and connection therefor - Google Patents

Description

April 10, 1945. v, Lucm 2,373,248

CIRCUIT CONTROL AND CONNECTION THEREFOR Original Filed April 23, 1940 .7,?a 40y 4/ x 4 IN I/EN 70 R.

28 I 2:2 I? y thereof omitted to show Patented Apr. 10, 1945 2313,24: omourr CONTROL AND CONNECTION 'rnaaaroa Louis V. Lucia,-West Hartford, Conn., assignor to The Silex Company, Hartford, Conn., a-eorporation of Connecticut Original application April 23, 1940, Serial No,

353,908, now Patent No.

ary 5, 1943. Divided an 2,307,052, dated Jannd this application June 19, 1941, Serial No. 398,803

1 Claim. (01.219-25) This invention relates to a circuit control and connection therefor and is particularly intended for steaming and pressing irons as shown and described in the co-pending application of Frank E. Wolcott, Serial N0. 337,279, filed May 25, 1940,

and assigned to the assignee hereto. The present application is a division of applicants co-pending application SerialNo. 353,908, iiled April 23, 1940, issued January 5, 1943, as Patent No. 2,307,052.

An object of the invention, as set forth herein. is to provide a novel electric connection for the heating element and circuit control of a pressing iron, which is highly desirable 'in the use of such an iron as well as in the manufacture thereof.

A further object is to provide an electric cord connection which is firmly anchored in the handle of a pressing iron and in such a manner that it may be easily assembled and economically produced.

Further objects of the invention will be more clearly understood from the following description and from the accompanying drawing in which:

Fig. v1 is a side view, partly in central vertical section, illustrating my invention as embodied in an electric pressing iron.

Fig. 2 is a plan view of the said iron with parts the control embodied in my invention.

' Fig. 3 is a side view in vertical section on line 3-3 of Fig. 4 showing the construction of said control and its connection in an electrical circuit.

Fig. 4 is a plan view thereof.

As illustrated in the drawing, the numeral 5 denotes the casing, or body, of a pressing iron having a sole plate 8 and a handle I.

V In the construction shown, a cover plate I may be provided for sealing the water-heating chamber 9, within the casing 5, and the said cover may have projections, such as l0, extending therefrom for securing the handle 1 thereto.

The cover 8 may be extended beyond the back of the casing 5 so as to provide in said iron a control chamber ll within which my improved circuit control may be contained so that it will not be subjected to the high heat to which thermostatic controls for such irons have heretofore the sole plate 8 upon a surface that is adapted to support said plate in a slanted position to conform with the design of the particular iron illustrated.

An electrical contact member l3, electrically connected to the frame I2, is carried upon a shaft it that is rotatable in said frame and has a head it, with a flat I, to which is secured an opermating knob II, with an indicating pointer i3 thereon. for rotating said shaft to position the contact cam ii for the degree of heat required.

A spring bar I! is secured to the bottom of said frame l2 by means of a supporting bar II which is'insulated from said frame by mica plates II; the plate 22 insulating the entire assembly I from the sole plate 8, and the said frame, supporting bar and insulating plates all being secured into a complete unit by means of eyelets 23 through which extend the screws 24 that are threaded into the sole plate 5 for securingthe frame I! thereto.

The spring bar is is provided with a contact point 25, for engaging the contact cam l3, and also with a laterallyextending arm 26 to which is threaded an adjusting screw 21 having an insulating point 28 in contact with a bi-metal bar 28 that is secured directly to the sole plate 6 and operates in response to the temperature thereof as will be hereinafter more fully .described.

The present invention particularly includes an electric connection for said control whereby electrical conductors, including a wire 30 which is connected to the frame l2, and a wire 32, which is connected to the lead wire 6-2: of the heating element B-a, extend from said control through an opening 33 in the cover 8 into a compartment 34 in the handle I, and therefrom, through an v opening 35 in the back of said handle to the exterior of the iron so that said wires, which may be included in a cord 36, may be connected to an electrical outlet.

The lead wire 6-c, at the opposite side of the heating element, may be connected to an extension 3| on the bar 20 which is electrically connected to the spring bar It.

been subjected in order that sufiiciently accurate response from such controls to the temperature of the sole plate may be obtained.

My improved control, as shown, for controlling an electric circuit which supplies current to a heating element i-a for heating the sole plate and water chamber 3, comprises an upright frame,

I! which is mounted upon the upper surface of If desired, a sleeve 31 may enclose said cord adjacent to said handle, in order to relieve the cord of undue strain, and the said sleeve may be secured to the handle by means of a head 3! which engages the peripheral portion of the opening 35 in the handle. 'A strain relief 3.9-a

may also be attached to said cord to engage the surface of the head 38 and thereby anchoring said cord to the iron so as to prevent strain at the points where the wires 8i and 82 are co nected to the control within the chamber 1 i.

In the embodiment illustrated, the handle 1 is preferably constructed of two halves which are secured to the member ill by screws 40 and retained in rigid position by dowels ll, so as to facilitate the manufacture of said handle as well as the assembly of the above described connection within the chamber 34.

From the above description it will be clearly seen that I have provided an improved. novel and highly efficient cord connection for an electric circuit control which is particularly adapted for pressing irons and which is highly desirable for its simplicity in assembling. as well as its resistance to abuse and wear.

It is to be understood that. while I have shown and described my invention as embodied in a pressing iron, the same may be used in various other types of electric heating devices without 20 departing from the scope thereof as set forth in the appended claim.

I claim: v

An electric hand device comprising a casing. projections on said casing. a divided handle ior said device secured to said projections, a heating element in said casing. and a connecting cord for said element extending from said element through an opening in said casing and a portion oi said handle to the exterior oi said casing: said handle being divided into two equal opposed halves each having recesses to receive said proing a shoulder seated against the wall or said chamber the said handle halves each also having with said separate'recess to in the wall of said chamber for receiving said cord guard, and a peripheral shoulder surrounding said notch for abutting an anchoring flange on said guard.

LOUIS V. LUCIA; I

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