US1199119A - Sad-iron. - Google Patents

Description

CARL E. SHIELDS, OF ROCK ISLAND, ILLINOIS.

sap-mow.

Specification of Letters Patent.

Patented Sept. 26, 1916.

Application filed May 9, 1914. Serial No. 837,362.

To (ZZZ whom it may concern Be it known that I, CARL E. SHIELDS, a citizen of the United States of America, and resident of Rock Island, Rock Island county, Illinois, have invented a certain new and useful Improvement in Sad-Irons, of which the following is a specification.

My invention relates to sad irons of that type which are heated internally by jets of flame and has for its principal object to provide a simple and improved structure in which the air chambers and air ducts are of the fewest possible number and of a character, in their simplicity of form, to greatly reduce the cost of manufacture, by avoiding the excessive loss always incident to intricately cored castings.

Another object is to so form the air chamber and connect the air ducts thereto in a manner to insure an abundant supply of air to the body of the iron and to be diffused therein in a manner to promote and support proper combustion.

These and other objects which will hereinafter appear I accomplish by the structure shown in the accompanying drawings in which,

Figure I is a perspective view of my improved sad iron, Fig. II is a side elevation partly in section, Fig. III is an enlarged top plan view with the cover removed, Fig. IV is a cross section taken on line AB of Fig.

III. Fig. V is a cross section taken on line CD of Fig. I.

Similar reference numerals refer to similar parts throughout the several views.

The iron can be made of any standard or desired form of outline and consists of the usual hollow body portion, a top plate orv cover to which is secured a handle, and the burner pipe entering the hollow body.

My invention is directed more especially to the manner of introducing the fuel gas and air into the iron whereby perfect combustion is induced and maintained, producing a constant jet of blue flame at each opening' in the burner pipe and which will not be aifected by the usual jerky action to which irons are commonly subjected when in ordinary use. An insuflicient quantity of air, sluggish circulation, coupled with an improper distribution thereof relative to the incoming gas, develop what are commonly termed floating jets, that is the flame at each orifice in the burner pipe is not constantit is intermittentgoing out and re lighting, thus permitting the constant escape of unburned gas, resulting seriously to the operator, especially if the iron is being used in a closed room. To insure a suffic1 ent quantity, free circulation and proper distribution of air in the simplest possible manner, I provide the usual hollow body portion 1 of the iron with the extra thick bottom or floor 2 and the usual vertical sides 3. A plaln, straight, roomy, rectangular air chamber 4 is cored out centrally of the floor throughout its length at the longest part thereof, the forward end being closed and terminating in the point of the body of the 1IOI1, while the rear end pierces the rear wall and is open to the atmosphere. The upper wall of the channel is provided with the slot 4? extendingthroughout its length and opening into the body 1. Radiating from the side walls of the channel at both sides thereof, and preferably at an angle there to, are the air-ducts 4 extending through the thick bottom or floor 2 to the outside. The points of communication of these air-ducts with the channel 4 are equally spaced along its length, thus insuring a full and constant flow of air through slot P throughout its length. By locating the vertical walls of these air-ducts in a slanting position relative to the channel 4: they function as deflectors, reducing the tendency of the flames from the burner reaching out therethrough and scorching the material being ironed. When these air ducts'are located at right angles to the channel, it has been found that the flame very easily and very frequently reaches out-beyond the sides of the iron, but when placed slantingly the tendency for the flame to so reach out is greatly checked. By slanting some in one direction and others in the opposite direction an inflow of air is induced regardless of the direction in which the iron is being moved by the operator. The sides and rear walls of the body of the iron are cut away at their upper edges as shown at 5 and 6. The cover 7 is secured to the top of the body by screws 7 or in any other suitable manner, and to the cover is secured the usual handle 8.

' Above the opening of channel A in the rear wall of the body portion is the centrally located opening 9 through which the burner pipe 10 passes. This pipe extends entirely across the hollow body of the iron and is securely screwed into the forward wall, closing the end thereof. Immediately outside of the of a Bunsen burner, for the reception of a rubber hose or gas tube. The pipe is further secured in proper position, relative to the body of the iron, and prevented from turning by the set screw 11 locatedin the 1 bottom of the screw hole provided for the cover screw 7 ;This burner-pipe 10 is 5120- sitioned a suitable distance above the floor 2 and is provided with a. series of openings orwjets 12 throughout its length, near the bottom and on veachside ot' the diametrical center thereof.

To the under side of the lid or cover 7 is secured the ba'illeor deflector 13. This deflector is made of a singlepiece of metal and consists ofthe horizontal portion 13 from which,.by proper slitting and punching, are formed the downwardly and outwardlyextendingwings 13". The deflector-is secured to the underside of the cover by the same bolts that fasten the handle 8 thereto. It is separated a suitable distance troimthe cover byjthe fillers 13. It is so positioned relative to the interior of the body of theiron that the free edges of the downwardly and outwarjdly extendingwings come in close proximityto the side walls and floor, as shown in dotted'lines in-Fig. IV, so that the heat arising fronr the burner :and floor .is defiected toward'the center of the-iron from which point it rises and escapes from the outlets 5 and 6, through contact with thehorizontalportion of the, deflector. The heat is'thus kept: from contacting the cover di-v rect, keeping it comparatively cool .to the comfort of theoperator. In thus bafliing or obstructingtheoutflowing heated air more heat units are given up and utilized in heating and keeping hot the thickefloorof the iron, resulting in marked economy in consumption of fuel.

Thus described, it is seen I provide a sad iron in the heavy bottom of which is a plain rectangular passage or channel extending -longitudinallythereof and having communication with the interior of the body of the iron through an unbroken narrow slot extending practically the entire length of the channel' Through the open end of the chan- Gopies lot-this patent may be obtained-for nel and the numerous laterally and slantingly extending ports or air ducts tapping the channel at regular intervals throughout a base, :an' air channel arranged centrally. and longitudlnally wlthin said base, said .811

channel being closed at its forwa-rdiend and open to the atmosphere attheother end, and horizontal air-passages in said basear ranged obliquely to andextending laterally, from said airchannel out through-the sides of said base.

2A sad iron comprising a hollow body, a burner pipe provided with lateralopen ings, longitudinally and centrally positioned in said body, a cover for said body, a ,de-

fiector providedwith lateral openings in the upper portion secured to the underside of said-cover and extending downwardly and outwardlyto a pointrin closeproximityto the floor and side walls. of said hollow body.

3. A sad iron comprising a hollow body, a cover. suitably. secured to said body, a deflector consisting of a horizontalportion and integral. wings bending downwardly and outwardly theretrom,saidwings having upturned portionsform-inglateralopenings in thenpper POI'tlOIl thereof, a burner pipe passlng longitudinally through said hollow body andrpositioned beneath the horizontal portion of said deflector and .betweenithe wingsrthereof.

Signed by me at Rock Island, Illinois, this 7th day of May, 1914.

CARL. E. SHIELDS. Witnesses J. WV; GRAHAM, IV. G-Es'r,

five cents eachyby addressing the :Gommissioner. of, Patent: .Washingtomh G.

Images