US1027895A - Electrically-heated sad-iron. - Google Patents

Description

E. L. POLLARD. ELEOTRIGALLY HEATED SAD IRON, APPLIOATION FILED NOV. 22, 1910.

1,027,895. I mm May 28, 1912.

WITNESSES %mm V IIVVENTOR 'MA Q M@ nrrmonm Laommcr: POLLARD, on nouns FERRY, NEW YORK.

ELECTRICALLY-HEATED SAD-IRON.

Specification of Letters Patent.

Patented May 28,1912.

Application filed November 22, 1910. Serial No. 593,700.

To all whom it may concern:

Be it known that I, EFFINGIIA Lav- RENCE POLLARD, a citizen of the United States, resident of the town of Dobbs Ferry, county of Westchester, and State of New 1 York, have invented certain new and useful Improvements in Electrically-Heated Sad- Irons, of which the following ,is a specification.

In experimenting and producing my. iron. I have had simplicity uppermost in my mind. Not only simpliclty in the first manufacture but particularly as it has to do with the making of the necessary repairs or replacing destroyedor inoperative elements. It has in the past seemed neces-- sary to entirely inclose the resistance material of which the heating element was composed, presumably because of the fear of rupture due to the great expansion from the high heat, and it has in the past been considered necessary to either mold the heating element into the iron or else secure it by such a means as did not allow for easy removal, or exchange or repair.

I have constructed my'iron insuch a manner as to expose to view the current carrying portion of the heating. element, and I have divided the heating element into a number of independent units which though connected together in series are easily removable one -at a time from the body or the iron, and I have arranged my iron in. such a way that the mere substitution of one heating unit for another will have no effect upon the 'iron, in fact it is not necessary to allow the iron to become cool before the substitution is made. It will.be readily understood that a change from one heating unit to another need not cause the iron to be long out of service, and that even a change suflicient to allow the iron to be used upon another. voltage than the one for which it was originally intended requires no great skill and but slight delay. 7

The following is what I consider the best means of carrying out this invention. p

- The accompanying drawings fornia part of this specification, in which:

a Figure 1, is a side elevation of the com- "plete device. Fig. 2, shows a central vertical section corresponding to Fig. 1. Fig. -3, is inplan. In this figure the top or handle ,carrylng member and the asbestos shield are both removed to expose to view the heating elements in position. Fig. 4, corresponds in most respects to Fig. 1 in this figure a switch has been added as shown to the left of the handle though secured thereto. 'Fig. 5, shows in detail another type of heating unit which may serve equally well with my iron.

Similar letters of reference indicate like parts in all figures where they appear.

The body of the iron is indicated by A, it'

is formed much like the ordinary sad iron having its interior hollowed out for the reception of the heating elements. Lugs A, which I may refer to as ears, are shown on one side of the upwardlyextending or box part of the iron, and a single hook A is arranged upon the opposite side. These elements A and A will be again referred to and their functions described. I

B indicates the top of the iron,'in shape, semi-domed or turtle-back, and formed integral with the top are a plurality'of hooks of a size to operate com-*eniently with the ears or lugs A A snap hook or catch on the opposite side of the top is indicated by B This hook, a spring catch, operates with the hook A and provides the releasing means which allows the top to be removed from the iron.

B indicates the operating handle preferably of Wood or other non-conducting materlal, it is supported by the posts B and B The lower end of the posts B and B are screw-threaded and after they have been passed through holes provided for them in the top of the iron, the nuts B, and B are tightened in place securing the handle upon the back.- Formed integral with the post B or attached reliably thereto are the tubes 1), b, and immediately belowthe tubes holes are produced into the 'top of the iron that exactly register with the hole through the tube. These tubes and the holes beneath form the leading-in-means for the cable that is-to supply electric current to the iron.

Now referring to Fig. 3, I will describe in detail the heating elements as they are shown there. The heating means is divided in this. instance into three partseonnected electrically in series, and although they differ somewhat in shape, the resistance of each part is equalvto one third .of the whole E and finishing with the connector block E. The section 'F is not unlike the section E, having the same corrugated face filled with resistance metal commencing with the connector F and terminating with the connector block F". The number of sections used in any iron must be determined by the i the rod to move with a size and weight of the wire, but it is obvious that if a greater number of units be used, the resistance of the wire or strip metal must be altered to suit the conditions.

It will also be obvious that the total amount of resistance in the sections must be. determined by the voltage of the line current with which the iron is to be used.

Between the top and the body oflthe iron I insert a metal plate R and above this an asbestos mat P bot-h serving one with the other to deflect the heat downward and to keep the top and operating. handle of the iron cool, and between the asbestos mat and the back of the iron, I secure a bowed spring 0 arranged to hold the mat, the deflector plate, and the heating units reliably in place. It is sometimes desirable to have a controlling switch attached to the iron, and to that end I have designed the switch shown in Fig. 4. It will be'observed that a slight modification of the front handle supporting. rod 13* is desirable when the switch is to be a part of the complete device.

H indicates a hinge, the outside block of which is secured to the rod B", and H a tongue hingedly or pivotally connected to H and terminating at the inner end in the grip H A rod H is acted upon by the tongue H and a guide H serves to cause erpendicular reciprocation when the' po'sltion of the grip H ischanged. The switch proper, J is of the double pole, double break variety having two blades and across bar connecting I them, each 'blade hingedly connected to a lug. Two spring clips for each blade are provided as is shown at J To the base of one' of the spring clips of each pair, the leading in wires are secured and to the other spring clips of the pairs, wires leading from the heating elements are secured.

The. swltch as I have shown it 1s norranged between the pairs of spring clips with one end resting upon a plate of non-' conducting material and the other end resting on thecross-bar which connects the switch blades. mechanically together.

Two pieces of slate or asbestos L and M hold the spring clips J and the hinge lugs for the blades J, and a cover N, which may also be of insulating material protects the whole from accidental contact with foreign material.

Modifications may be made within the scope of the appended claims without departing from the principle or sacrificing the advantages of this invention.

In Fig. 5 I have shown a somewhat different structure; in this device the heating units S are independently formed tubes havinga metallic cap T secured upon each end. The resistance wire U is wound upon the tube S and has one of its ends secured to each metallic cap, cont-act blocks V receive the metallic caps and the'series of contact blocks normally insulated from each other are connected up in such a manner as to place the tubes in series electrically.

Other modifications may be made by a good mechanic.

Having carefully and fully described my invention, what I claim and desire to secure by Letters Patent is 2-- 1. In a sad iron the combination of a body, a plurality of heating units within said body, a cover hingedly connected to said body and having an operating handle and a switch arranged to serve with said body, means arranged between said cover and 'said'body fordeflecting the heat downward upon said body and away from said cover and said handle and a spring carried by said cover for retaining said deflect-ing means as specified.

2. In an electrically heated sad iron, 'a body, a cover, a handle therefor, a plurality of heating units in inde endent sections within said body, said units having their conducting material arranged transverse to the, length of said body and each said unit provided with temporary connecting means allowing one unit to be'removed without disturbing the whole as herein specified.

Signed at New York city, in the county of N ewYork and State of New day of October 1910.

EFFINGHAH LAURENCE POLLARD. \Vitnesse's:

C. E. McCnm'roox, ELLswonTH HISER.

York this 22nd

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