US1471823A - Electric sadiron - Google Patents

Description

W. C. BOSWELL ELECTRIC SADIBON Filed June 14. 1922 2 Shuts-Shut 1 20 mmummmummm 1 3 v 1 7 flmuuuulnll d8 WW 1? lllmmmmmmmll l 20 Z1 will-mm C. (imam H MTG Oct. 23, 1923. 1,471,823

W. (Z. BOSWELL ELECTRIC SADIRON Filed June 14. 1922 2 Shaats-$hqet 2 I 22 gwumx 06 1'0 11 2o Gym/mung"- I f This invention relates sad irons and has particular reference to an Patented Oct. 23, 1923.

UNITED STATES PATENT OFFICE.

WILLIAM C. BOSWELL, OF BALTIMORE, MARYLND.

ELECTRIC SADIRON.

Application filed June 14,

, Baltimore, 1n the State of Maryland, has invented certain new and useful Improve- ,ments in Electric Sadirons, of which the following is a specification. v

to improvements in iron that is to be ele rically heated. An object of the invention is to provide an iron embodying novel features in construction, which will facilitate its assembly"; re-

1 tain the withstand jars and knocks that ordinarily one the line 33 of Fig. 1

in bottom view heat at its ironing surface and will .put an electric iron out of commission.

Anotherobject of the invention is to pro- -'vide an iron having an improved filler for carrying the heating wires whereby the latter may be removed and new wires installed.

' With these, and other ob'ects in view, the

invention is illustrated in t e accompanying drawings, wherein,-

Fig. 1. shows the complete iron in elevation.

Fig. 2. illustrates a cross-sectional detail through the same,-the section being taken on the line 2-2 of Fig. 1.

Fig. 3. shows another sectional detail through the iron,-the section being taken i Fig. 4; illustrates the detached filler-block to show the wire-receiving cavities therein. t

Fig. 5. shows the same block with the wires placed in the cavities thereof and the cavity partly filled with a filling composition.

Fig. 6. illustrates the handle and iron cas- Fig. 7. shows the detached insulator shell in longitudinal section, and

filler-block, the

Fig. 8. illustrates the iron ng plate and same being sectioned at one end to show the binding posts therein.

Referring to the drawings the numeral 10,

- designates the smoothing pr ironing plate which latter has a plurality of screw-threaded sockets 11 on its upper side for a purpose presently to be described.

On the upper side of the ironing-plate I seat a filler-block 12 which is of less width and length than the upper surface of the ironing-plate so that, when seated thereon,

side

1922. Serial No. 568,127.

the ironing-plate will project slightly all the way around the base and form a support or shoulder 13.

This filler-block 12 has novel features in that, although it is preferably formed of soapstone, it is baked and hardened and is thus made tough so that it will withstand knocks and jars and will not crack or crumble as do the ordinary foapstoiae fillers usually employed in irons this character. The baking and hardening of this filler has other useful objects in view that. will presently be explained.

By reference to Figs. 2-3-4--5 and 8 of the drawings it will be seen that the fillerblock 12, has a flatsupporting-surface 14 which seats on the-fiat top surface of the ironing-plate and also has a flat top-surface 15. The supporting surface, which is also the bottom, is both wider and longer than the top surface while the two sides 16 are tapered or sloping and converge as theyextend forwardly where they form a point 17 The rear edge 18 of the filler-block is broad in a cross-wise dlreCtiOn and also tap s or inclines. The sloping rear and side edges of the filler-block have a useful function when the parts are assembled as will presently appear.

The bottom of the filler-block is provided with a recess 19 in which there are a plurality of spacing webs, flanges or projections 20 whereby to form a series of wire-receiving channels 21.

The heating wire 22 is laid in the channels 21 in such manner that the stretches thereof are kept separated,.one from another, bythe'webs, flanges or projections, as clearly shown in Fig. 5 of the drawing while the two ends of the wires are connected to two binding- posts 23 and 24 respectively; These binding-posts extend in an inclined direction through the tiller block and incline rearwardly as they extend upwardly above said block The upper side of the filler-block is provided with an endedge notch. or recess 25 the forward edge 26 of which slopes upwardly so as to extend at a right angle 'to' the axles ofthe post-s 23 and 24 so that binding-nuts 27 may be screwed onto the posts and clamp the posts 1 will not interfere with the seating of another part that ibto be placed on top of the block. 1

After the wires 22 are in place in the filler-block I till the bottom recess and channels with composition or cement which will seat so that the wires will be completely enclosed and concealed in the bottom of the block. This is desirable because, in case the wire burns out, this filler or composition may readily be gouged out and the old wire then removed and'a new on substituted without injury to the filler-block itself, because the latter has been hardened.

The filler-block 12 is provided with a plurality of vertical perforations 28, which register with the threaded sockets 11 in the ironing-plate, also for a purpose that will presently be described.

In the further construction of my iron I provide an insulator shell '29 of asbestos. This shell is shaped to snugly fit down over the top of the filler-block and has suitable perforations 3t) and 31 therein.the latter to permit the passage of the binding-posts and the former registering with the perforations 28 in the block beneath.

The iron also makes use of a metal outer casing 32 which has a recess 33 in its under side with sloping and longitudinally-converging side-walls 34 and a tapered rear wall 35. The interior of this casing recess conforms to the external shape of the shell 29 so that said shell and the tiller-block may fit up therein.

Near the rear end. the casing has two inclined passages 36 with a recess 37 at the base thereof so that tubular bushings 38 may xtend through said casing and form insulators through which the binding posts may proiect.

The casing is comparatively thick above the recess 3 so as to provide sufiicient weight for the iron, and vertical passages 39 are formed through this thickened part.

The upper side of the casing is provided with a boss 40 around each of the perforations whereby to form a support for a bracket 41. which latter carries a handle 42.

hen the parts are assembled with the shell 29 on the filler-block and the casing 32 seated down on the shell. the inclined wall 35 of the casing recess seats on the inclined end wall of the shell and forces the shell and fillerblock forwardly toward the pointend of the casing-recess while the tapered walls ensure that the several parts will fit close together in a vertical direction.

After the parts are assembled. suitable bolts 43, are passed down through the bracket 41, the passages 29, perforations 30 and 28 and screwed into the recesses ll in the ironing plate. These bolts draw all the parts together andhold them rigidly in place.

A suitable socket guide H, is attached to the rear of the bracket 41 and the upper ends of the binding post terminate in this guide so that the socketed-end 45, of an electric connection, shown in broken lines in Fig. 1, may readily be inserted in the guide and engaged with the posts.

Having described my invention, I claim,-

1. In an electric sad iron the combination with an ironing-plate of a tillerbody seated on the upper side of said plate said body being of a baked soap-stone substance which is hardened by the baking and which is an insulator against the passage of electric current but will retain heat, heating wires in said body to heat the latter, posts extending through said body and in electrical connection with said wires and a metallic cas ing covering said filler-body and connected to said ironing-plate.

2. In a sad iron the combination with an ironing-plate, of a fillerbody of a baked material on said plate but of less area than the latter whereby said plate will project from beneath the body and form a flange or support all the way around the base of the body, said body having a beveled rear end and sloping sides, a heavy metallic casing to provide weight and having a cavity in its under side with a tapered end wall,

and sloping side walls whereby to fit down over the body of baked material and securing devices passing through the heavy casing and body and engaging the ironingplate whereby to clamp the body in place.

3. In an electric sad iron the combination with an ironing-plate of a filler-body of a baked soapstone substance which is hardened by the baking and which is an insulator against the pa sage of electric current said filler body having a recess in its upper rear end and also having a vertical opening therethrough, heating wires in said body to heat the latter, posts extending into the body at said recess and said posts being connected to said wires, a metallic casing having a recess in its bottom to receive the fillerbody said casing being thickened above the cavity to provide weight and the thickened portion being provided with openings for the passage of the posts and the metallic body also having a vertical opening to register with the vertical opening in the fillerbody, a handle-bracket on top of the metal casing and fastening means extending through the bracket, the thickened portion of the casing and the filler-body and engaging the ironing-plate.

4. In an electric sad iron the combination with an ironing-plate of a filler-body seated on the upper side of said plate said body being of a baked and thereby hardened sub-' stance which is an insulator against the passage of electric current but which will retain heat and said body having an edge notch or recess-in its rear upper side, heater wires in said body, posts extending through the body and projecting therefrom at said rear notch or recess, a securing nut on the post which nut is seated in said rear bodyrecess, a heavy metallic casing having a bottom recess to fit down over the'body and means for securing the casing to the ironing-plate.

5. In an electric iron the combination with an ironing-plate, of a filler-body of baked and hardened soapstone on said plate and having wire-channels therein and also having sloping sides and a beveled end, wires in said channels, posts extending through, the body in front of thc bevele end and connected to said wires, a heat insulating covering or'er the soapstone body, a heavy metallic casing having a bottom recess which conforms to the shape of the insulating covering, a handle-bracket on to of the heavy casing, and securing devices passing down through the bracket, the casing,

the insulator covering and body and engaging the ironing-plate to clamp the several parts together.

In testimon whereof I afiix my signature.

ILLIAM C. BOSWELL.

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