US866810A - Electric laundry-iron. - Google Patents

Description

PATENTED SEPT. 24, 1907.

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APPLICATION FILED 00T.10. 1906.

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narran sierras EARL' HL' RICHARDSON, OF ONTARIO, CALIFORNIA.

ELECTRIC LAUNDRY-IRON.

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To dll-whom 'it rmay concern:

Be it known that l, EARL H. RICHARDSON, a citizen ofthe United States, residing at Ontario, in the county `of San Bernardino and State of California, have invented new and us'eul ImprovementsI in Electric Laundry- Irons, oi which the following-*is a specification. l This invention .relates particulariy4 to laundry irons which are heated by means of an electrical current lwhicliis passed through a resistance detachably secured to therbody of the iron; and a main object of this inven- ,tion is to provide a'laundryiron in 4which the electric vcircuit is automatically opened when the temperatur L of the iron reaches a predetermined point. 'Heretofore electric laundry irons and particularly `in the specic constructions illustrated and described in a former United lStat/es Letters Patent issued to me on electric laundry irons, No. 809,529 and. on my allowed application entitled Electric heating unit, S. N. 292,409, no provisionis made when the iron is out of service, for automatically opening the circuit when the switch plug is accidentally left in circuit. p

It often happens when the plug is accidentally left n circuit for a long time, when the iron is out oi service, that the temperatureof the iron increases to such avhigh degree as to warp the body and melt the heating element to such an extent, as to render the further use o the ironimpracticable without first renewing the parts rendered useless. It is with a view of rendering the occurrence of such accidents practically impossible, that this invention has been conceived. i

` Another object oithis invention is to combine the l heating elements with the base of the iron so as to render the whole easily transportable.

Another object is to provide for the complete insulation o the cover of the iron from the body so as to prevent any upward radiation.

A further object is toprovide means ior maintaining at all times when the cover is secured to the body a perect electrical contact, and at the same time to provide means for its simple adjustment to the body.

Iaccomplish these objects by means of the device described herein and illustrated in' the accompanying drawings in whichz- Figure 1.- is a side elevation of the iron showing it supported by the stand secured thereto. Fig. 2.- is a'planview oi the iron with the cover removed. 3.- is a central. vertical section taken on line 3-3of Fig. 2 with the cover in section and secured to the body. Fig. 4.-- is an enlarged sectional detail of one of the terminals taken on line 4Jt oi Fig. 2. Figf-is a cross sectional detail taken on line 5-5 of Fig. 2. 6.-- is a rear elevation of theiron partly in section.

Referring to the drawings, the body of th'e iron 5 is preferably composed of aiat sole 6 of sui'cient thickness to` give it weight, and preferably formed integral therewith and on the top thereof are triangularly disspecification-pf Letters Patent.' Applicatioh'nea october 1o, 190s. serai No. 338,234.

rasantes sept. 2e, reos.

posed lugs 7 and 8. These lugs are provided with recesses Sand 10 which extend downwardly to the top of the sole of the iron and are transversely joined at the heel of the iron by a rib l0', the purpose oi which is to strengthen the body and t'o prevent its warping. Arranged within each recess is a heating element, which comprises a core 11, that isprel'erably rectangular in cross section. i The respective ends oi the core within the corner portions 12 and the toe portion oi the body, and each end 13 is of a width which snugly tits in the recess, so that as perfect a contact as possible is formed 'between the solid metal o the body and the ends of the each core, extending between its ends 1S is reduced in i cross section so as to accommodate its insulation and Winding.

In assembling the heating elements in the iron, the

reduced portion oi each core is wrapped with a sheet of mica 14 to insulate all of its faces. Wire 15 is then wound over the mica and the coils are slightly spaced apart, to prevent short circuiting. The recesses in the lugs with the exception oi the end walls are then lined With mica 16 and the core thus prepared is slipped into its recess forming a snug fit, givinga flat contact between the mica 16 at all points within the-walls ofthe recess.

The inner side walls or' the recesses are provided near each end with slots 17 which open into the Central cored out portion 18 and the forward end of the wires are car-l ried from the cores out through the slots and connected together as shown. A small sheet oi mica 19 is slipped under the wires so connected, the ends resting at the top of the lugs 7 and 8 so as to prevent short circuiting. The rear end wires are likewise brought through the rear slots 17 and connected to the respective terminals or interior binding posts 2G and 21. These binding posts are preferably secured to the rib 1G and are insulated therefrom by Washers 22 oi mica or. other nonconducting material and the rear end otthewires of the cores are connected thereto. Secured to the outer ends oi these binding posts 20 and 21 in any suitable manner are 'thermic ruses 23 and 24 which are adapted when the cover is secured to the 'body ofthe iron to contact withy the chamiered inner ends of the exterior binding posts'25 and 26 which are secured to the rear end of the cover 27 and are insulated therefrom by Lwasliers 28, of: mica or other non-conducting material. Secured to the outer end of these exterior binding posts are contact clips .2.9 and SO'which are adapted to be eniron, and the outer endof the cover 27 is provided with asimilar incline 33 which is adapted when the cover 27 is secured in position on the 'body of the iron, to draw the inner ends of the exterior bindingposts into perfect contact with the fuses secured to the outer end ofthe interior binding. posts secured to the rib l0. The cover 27 .is detachably secured to the body ofthe iron by screws 34 and is provided with th usual bail 35, to which handle 36 is secured. The interior of this coveris lined on its inner face and sides with sheets of asbestos,.or, other heat resisting material 37 to prevent any upward radiation, and its lower edge rests on a thick layer of asbestos 38 which is designed to rest on the top of the body of the iron, the .inner portionbeing cut away so as to accommodate the triangular shaped lugs 7 and 8, and the outer portion trimmed iiush with the sides ot theiron.

It will be noted from the foregoing description that I have produced a laundry iron in which any danger from overheating when the switch plug is accidentally left in circuit is practically eliminated, as the moment the iron reachesa certain temperature it will -imme` diately melt one of the fuses connected to the interior terminals, thereby'opening the electrical circuit, the melted fuse falling into a pocket 39 formed by the rib MY and the inner edge of asbestos 38, thus insuring complete protection against'melting theheating elements or injuring the iron. The inclines formed on the outer ends-oi the lugs and on the inside outer end of the cover are so formed that'when the cover is secured to the body of the iron, it will tend to pull the cover forwardlyl thus insuring anabsolutely perfect contact between the interior and exterior binding posts. Y

It will also be noted that by forming the body of the iron in a small and compact mass that transportation is facilitated when the replacement of parts becomes necessary by reason of long and continued use. i

The entire insulation of the inner lside of the cover renders thev utilization of every heat unit absolutely possible and at the same time renders the cover of the iron comparatively cool.

It will be further noted that I have produced a laundry iron that is comparatively simple in construction and ,effective in operation and one in which the parts are few and are readily assembled. I

Having described my invention'what I claim as new and desire to secure by Letters Patent isz- 1. A device of the class described, comprising a body' having a recess; a wire wound core detachablysecured in said recess; binding posts secured to`said body, the ends of the wire on the core being connected with the binding posts; a cover detachably secured to said body;

binding posts secured to said cover, said binding posts' adapted to connect with the iirst named binding posts through fuses; and fuses interposed between said binding posts.

2. An electric heating unit, comprising a body having recesses formed therein; wire wound cores in said recesses; binding posts secured to said body, the ends of thewlre being connected with the binding posts a cover detachably secured to said body; binding posts secured to said cover, said binding posts adapted to connect with the first named binding posts through fuses;A and thermic fuses interposed between said bin'ding posts.

3. An electric heating unit, comprising a body having a recess formed in its top; a wire wound core in said recess; binding posts secured to said body, the ends of the wire being connectedwith the binding posts; a cover lined with a heat insulating material detachably secured to said body; and binding posts secured to said cover adapted to contact with the first named binding posts.

4. An electric heating unit, comprising a body having recesses formed in its top; wire wound cores in said recesses; binding posts secured to said body, the ends of the wire being connected with the binding posts; a cover lined with a heat insulating material detachably secured to said body; and binding posts secured to said cover adapted toi contact with said first named binding posts.

5. A device of the yclass described, comprising a body; a wire wound core secured to said body; binding posts secured to said body, the ends ot the wire on said core being connected with the binding posts; a cover'lined with a heat insulating material detachably secured to .said body; and binding posts secured, to said cover adapted to contact with said rst named binding posts.

6. A device of the class described, comprising a body; a wire wound core secured to said body; binding posts secured to said body, the ends of the wire on the core being connected to said binding posts; a cover lined with a heat insulating material detachably secured to said body; bindlng posts secured to said cover adapted to connect with the rst named binding posts through fuses; and thermic fuses interposed between said binding posts.

lating vmaterial detachably secured to said body; and

terminals secured to said cover, saidvterminais adapted to contact with the first named terminals.

8. An electric heating unit, comprising a body having electric heating means in contact therewith; terminals for said electric heating means; a cover having terminals secured thereto; fuses interposed between said terminals; and moving-means secured to the cover and to the body whereby when the cover is attached to the body it will move the terminals secured to the cover into contact with the terminals secured to the body. y

9. An electric heating unit, comprising a body having electric heating means inv contact therewith; terminals for theelectrlc heating means; a cover having terminals secured thereto; fuses interposed between said terminals; and means secured to the cover and to the body for forcing the terminals secured to the cover into contact with the terminals secured to the body.

10. An electric heating unit, comprising a body having electric heating means in contact therewith; terminals for the electric heating means; a cover having terminals securedl thereto; thermic fuses interposed between said tervmlnals; and means secured to the cover and to the body for forcing the terminals secured to the cover into contact with the terminals secured to the body. s

11. An electric laundry iron comprising an upper and lower member; an electric heater in contact with one of 'said members; and means secured to both of said mem-l bers whereby when the members are secured together 'the circuit isautomatlcally completed.

12. An electric heating unit, comprising a body having recesses, formed in the top thereof; wire wound cores, in

.said recesses; binding posts secured to said body, the ends A 13. ,An electric heating unit, comprising. a body having recesses formed vin the top thereof, said body having an inclined face on its outer end; wire wound cores in said recesses; binding posts secured to said body, the ens ot the wire on the cores being connected with the binding posts; acover detachably secured to said body havingan inclined face on its outer end adapted to engage the incllned face on the body; binding posts secured to said cover; and thermic fuses interposed between said binding posts. p

14. An electric laundry iron, comprising a body having electric heating means in Contact therewith; a cover lined with a heat insulating material detachably secured to said body; and a heat. 'insulating material interposed said members; binding posts secured to each of said members, saidbinding posts adapted to connect with each other through fuses; and fuses interposed betweeny said binding posts.

16. An electric laundry iron, comprising an upper and lower member; electric heating means secured to said lower member; binding posts secured to each of said members, said binding posts adapted to connect with each other through fuses; and fuses interposed between said binding posts.

17. An electric laundry iron, comprising an upper Sand lower member; electric heating means scred to said lower member; binding posts secured to each of said members, said binding posts adapted to connect with each other through fuses; and thermic fuses interposed between said binding posts.

18. An electric heating unit, comprising two members; electric heating means secured to one of said members; binding posts secured to each of said members, said binding posts adapted to connect .with each other through

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