US2008484A - Electric iron - Google Patents

Description

July 16, 1935.

w. E'. BELCHERY ELECTRIC IRON Filed Aug. 24, 1934 2 Sheets-Sheet 1 .39 Inventor Fife/lie) EBeZcfier By 4%, M?

Attorney July .16, 1935. w. a BELCHER ELECTRIC IRON Filed Aug 24, 19:54

2 Sheets-Sheet 2 Patented July 16, 1935 UNITED STATES PATENT OFFICE 2,008,484 ELECTRIC IRON Walter E. Belcher, Seattle, Wash. Application August 24, 1934, Serial No. 741,316 Claims. (01. 219-25) trol means of the character indicated which is.

fiiexpensive and rugged and eificient in opera- It is also an important object of my invention to provide control means of thecharacter described above which is capable of being incorporated in an ordinary electric iron without extensive alterations thereto.

It is also an important object of my invention to provide control means of the character indicated above which is also applicable to other tools and appliances for controlling the energization thereof while in use and while not in use.

will be apparent from a reading of the following description in connection with the drawings,

wherein for purposes or illustration I have shown a preferred embodiment of my invention.

In the drawihgsz- Figure 1 is a longitudinal vertical sectional view through an embodiment of the invention as applied to a sadiron.

Figure 2 is a longitudinal sectional view through the embodiment showing the embodiment in the position'in which it is placed when not in use.

Figure 3 is asectional view similar to Figure 2 showing the control in operated condition.

Figure 4 is a transverse vertical sectional'view taken through Figure 1 approximately on the line Figure 5 is'a top plan view of the stationary plate.

4 Figure 6 is a transverse vertical sectional view taken through the temperature control stop approximately on the line 6-8 of Figure 1.

Figure 7 is a top planview o! the contact arms on the swingable arm.

45 Referring in detail to the drawings, the n meral 5 'refers generally to-a conventional type of sadiron casing on which is mounted the handle 0, the handle in this instance being provided in its underside with a longitudinal slot I cut in a 50 vertical plane and having across one end a pivot 3 on which is pivoted one end of a gravity attected lever 8 which has in its opposite end a screw or bolt in providing loose anchorage for the upperend'o! a link H which has a hole loosely receiving the shank portion of the screw Ill and has its opposite end depending through an 7 opening i2 in the rear portion or the top of the casing [and through a transverse slot i3 in the stationary plate l4, the lower end of the link Ii having itself an opening through which is engaged the rear end of the bi-metallic heat affected arm l5.

Located in the top of the casing 5 is a spheroidal bushing I6 in which is threaded a stop l1 having a turning lever l8 on its upper end, the lower end iii of the stop passing through an opening 20 in the stationary plate l4 in a position to be contacted by the bi-metallic arm 15 as shown in Figure 3.

The stationary plate I4 is elongated and generally rectangular in form as shown in Figure 5 and has an opening '20 through which passes the anchorage post 22 by means of which the plate I4 is stationarily supported in a horizontal position shown in Figure 1. The front end of the plate has a depending flange 23 which acts as a limit stop for the swingable arm 24, and the sides of the front end of the plate" l4 have depending ears 25, 26 through which passes a pivot 21 which also passes through upstanding ears Other objects and advantages of my invention 28 on the swingable arm 24, so as to pivotally support, the swingable arm 24 for movement in a vertical plane. The stop flange 23 on the stationary plate limits the downward swinging of the rear end of the arm 24 to approximately the horizontal as shown in Figure E1. The swingable arm has an opening 29 whose edges are spaced from and around the anchorage post 22 to permit free movement of the arm 24. The rear end of the stationary plate 14 has thereon the usual terminals 30, 3| projecting through suitable bushings 32, 33, respectively, in the rear part or the casing for connection of the usual cable or cord for energizing the iron, and therear end of the casing is provided with an angular rest 34 enabling standing the iron upon its heel in the position shown in Figure 2.

The swingable arm 24 has a downwardly declining portion 35 on which is mounted in an insulated manner a heavy weight 36 below the part 35 and above the part 35 there is connected in an insulated manner the spring contact arms 31, 33, respectively, having the respective contacts 39, 40 for engaging with the leads 4| from the terminals 42 of the electricalheating with theresult that the contacts 39, 40 will engage the terminals 30, 3| and thereby energize the heating element or the iron until such a temperature of the iron has been reached that the bimetallic arm l5 starts to curve until it has curved sired temperature.

Although I have shown and described herein a I preferred embodiment of my invention, it is to be definitely understood that I do not desire to limit the application of the invention thereto, and any change or changes may be made in the materials and in the structure and arrangement of parts, within the spirit of the invention and the scope of the subjoined claims.

What is claimed is: V 1. An electric iron of the character described comprising a casing having a handle, said casing containing an electrical heating element, electric terminals mounted on the casing and having each a portion within the casing, a lever i pivoted on the handle and having a link depending into the casing, a swingable arm pivoted within the" casing and containing contacts connected to the heating element, a bi-metallic arm on the last-mentioned arm and connected to said link, said lever, said link, and said swingable arm being adapted to swing gravitationally to aposi tion other than the initial position thereof when the iron is tilted and placed on its heel, contacts on the swingable armpengageable with said terminals and energizing the heating element, an adjustable stop on the casing, said bi-metallic arm being adapted to curve at a predetermined temperature so as to engage and work against said stopin a manner to push the contacts away from said terminals and deenergize the heating element.

2. An electric iron of the character described comprising a casing having a handle, said casing containing an electrical heating element, electric terminals mounted on the casing and having each a portion within the casing, a lever pivoted on the handle and having a link depending into 'the casing, a swingable arm pivoted within the casing and containing contacts connected to the heating'element, a bi-metallic arm on the lastmentioned arm and connected to said link, said lever, said link; and said swingable arm being adapted to swing gravitationally to a position other than' the initial position thereof when the iron is tilted and placed on its heel, contacts on the swingable arm engageable with said terminals and energizing the heating element, an a fiustable stop on the casing, said bi-metallic arm being adapted to curve at a predetermined temperature so as to engage and work against said stop in a manner to push the contacts away from said terminals and deenergize the heating element, said adjustable stop being mounted on the top of the casing.

3. An electric iron of the character described comprising a casing having a handle, said casing containing an electrical heating element, electric terminals mounted on the casing and having each a'portion within the casing, a lever pivoted on the handle and having a link depending into the casing, a swingable arm pivoted'within the casing and cont contacts connected to the heating element, a bi-metallic arm on the lastmentioned arm and connected to said link, said lever, said link, and said swingable arm being adapted to swing gravitationally to positions other .than the initial positions thereof. when the iron comprising a casing having a. handle, said casing containing an electrical heating element, electric terminals mounted on the casing and having each a portion within the casing, a lever pivoted on the handle and having a link depending into the casing, a swingable arm pivoted within the casing and containing contacts connected to the heating element, a bi-metallic arm on the lastmentioned arm and connected to said link, said lever, said link, and said swingable arm being adapted to swing gravitationally to positions other than the initial positions thereof when the iron is tilted and placed on its heel, contacts on the swingable arm adjustable with said terminals and energizing the heating element, an adjustable stop on the casing, said bi-metallic arm being adapted to curve at a predetermined temperature so as to engage and work against said stop in a manner to push the contacts away from said terminals and deenergize the heating element, said lever being operable into a slot provided in the handle by grasping the handle, for engaging said contacts and said terminals for energizing the iron while in use.

5. An electric iron of the'character described comprising a casing having a handle, said casing containing an electrical heating element, electric terminals mounted on the casing and having each a portion within the casing, a lever pivoted on the handle and having a link depending into the cas-' 4 ing, a swingable arm pivoted within the casing and containing contacts connected to the heating element, a bi-metallic arm on the last-mentioned arm and connected to said link, said lever, said link, and said swingable arm being adapted to swing gravitionally to positions other than the initial positions thereof when the iron is tilted and placed on its heel, contacts on the swingable arm engageable with said terminals and energizing the heating element, an adjustable stop on the casing, said -bi-metallic arm being adapted to curve at a predetermined temperature so as to engage and work against said step in a manner to push the contacts away from said terminals and deenergize the heating element, said lever being operable into a slot provided in the handle by grasping the handle, for engaging said contacts and said terminals for energizing the iron while in use, said swingable arm, said link and said lever being adapted to fall when not supported withv the hand so as to disconnect the contacts from the terminals and deenergize the heating element of the iron. I

' WALTER E. 'BELCHER.

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