US1560259A - Forge - Google Patents

Description

CI. KARRAL Nov. 3 1925- FORGE Filed May 21. 199-4 2 Sheets-Sheet 1 1520920602: 67/464,215 Meaq,

1/3 War/reg Nov. 3 1925. 1,560,259

c. KARRAL FORGE Filed May 21, 1924 2 Sheets-Sheet 2 I f 1 I I 1 Wifimsgaw: 1720922507:

it' l-mil a I rarer Pics.

CHARLES KARRAL, OE DANVILLE, ILLINOIS.

FORGE.

Application filed May 21, 1924. Serial No. 714,929.

To all whom it may concern.-

Be it known that l, GHA

citizen of the DH-HJlllfll, in the county of Vermilion and State of Illinois, have invented certain new and useful Improvements in Forges, of which the following is a specification.

This invention relates to forges and more particularly to oil forges for heating small steel tools or other articles, and has for one of its objects the provision of a forge adapted to use a low grade or cheap oil as the heating medium.

Another object is to provide a novel form of forge body including separate combustion and heating chambers whereby more complete iombustion of the fuel is had, and, therefore, excessive oxidation of the metal articles being heated is eliminated.

A further object is to provide a novel form of oil burner, for forges of the class described, adapted to efficiently burn a very low grade of oil, commonly known as black jack, which is much cheaper than the cheapest crude oils.

A still further object is to provide a forge having the novel construction, design and combination of parts hereinafter described and illustrated in the arcompanying drawings.

In the drawings, Figure 1 is a front elevation of a forge embodying my invention.

Figure 2 is a sectional elevation on the line li ll of Figure 1.

Figure 3 is a sectional elevation on the line lll-lll of Figure 2.

Figure l is an enlarged elevation of the fuel burner.

Referring more particularly to the drawings, the hollow body of the forge, which is substantially rectangular in shape, is designated generally by the letter A, and is composed of front and rear side walls 2 and 3, end walls t and 5 and top and bottom walls 6 and 7, respectively.

The body A has an interior lining 8 of lirc-bricl:, one its relatively narrow hollow interior is divided into a combustion chamher 9 and heating chamber 10 by a horizontal wall 11 extending from the end wall l of the body to within a short distance of the other end wall 5, so as to leave a small opening 12 for the heat and products of combustion to pass from the chamber 9 into the chamber 10.

The body of the lithium, a

forge is supported at its i, nitec States. and resident of corners by angle iron binding members 14, which also support a bottom plate 15, and the angle members Tol (-.Fitl1(l materially below the plate 15 forming 16 to support the forge above the floor level. The angle members 14 are tied together by suitable tie bolts or rods 18, which extend from corner to corner of the body.

A flue 19 extends upwardly from the floor along the rear side of the body A and communicates through a horizontal flue passage 20 with the heating chamber 10, ad acent the end opposite from the opening 12, forming communication between the chambers 9 and 10. The flue 19 is provided with a damper 21 for regulating the draft therethrough.

The front side wall 2 is offset along the chamber 10 and made thinner and provided with two rows of openings 22 for receiving the articles to be heated. A shelf member 23 is mounted below each of the rows of openings 22 and are adapted to support detached closure members 24., which may conveniently be separate bricks, adapted to be moved into position to close or open the article receiving openings 22.

The end wall l is provided with an opening 25 communicating with the heating chamber 9 and through which a liquid fuel or oil burner B projects.

The opening 25 is considerably larger than the burner B and is provided with a removable closure 26, which closure is adapted to removed to permit access to the chamber 9 when igniting the burner.

The burner B comprises a tubular casing or conduit 27, a conduit 28 of relatively small diameter extending through the closed rear end of the conduit 27 and terminating at the forward end of the conduit 27, and a third conduit 29 of relatively smaller diameter than the conduit 28 extending through the closed rear end of the conduit 28 and terminating at the forward end thereof. Each of the conduits 27, 28 and 29 are provided with inlet ports adjacent their rear end, to which supply conduits 30, 31 and 32, respectively, of equal diameter to the respective burner conduits are connected. The conduits 31 and 32 are provided with valves 38 and 3- respectively for regulating flow therethrough.

The inner conduit 29 the conduit or pipe and the conduit 28 is is connected through 32 with an oil supply, connected through the conduit or pipe 31 with a compressed air supply, while the outer conduit or casing 27 is connected through the conduit or pipe 30, with a suitable blower (not shown) for supplying a forced draft to support combustion. The supply of air to support combustion is varied by varying the blower speed.

The operationof this novel form of burner is such that the very low grade of oil connnonly known as black jack is readily vaporized and burned. The oil, which is very heavy, will flow out of the forward end of the conduit 29 and be picked up by the compressed air emitted from the surrounding conduit or pipe 28 and broken up or vaporized, forming a combustible mixture, and theair supplied by the blower will pick up this combustible mixture and carry it into the chamber 9, where due to the perfect vaporization and forced air supply, complete combusition will take place.

In the general operation of the forge the products of combustion must pass the entire length of the chamber 9 before they can enter into the chamber 10, and then pass along the chamber 10 the greater part of its length before they can escape through the flue. Therefore, the greatest amount of heat units are taken from said products of combustion before they escape.

This forge provides for the burning of a very cheap fuel, and provides a construction in which the heat may be readily regu lated due to the valved burner supply pipes. It also provides a construction in which less oxidation of the articles being heated occurs,

due to the practically perfect combustion of the fuel.

Vhile l have shown and described only one specific embodiment of my invention, it will be understood that I do not wish to be limited thereto, since various modifications may be made without departing from the cope of my invention as defined in the appended claim.

I claim It heating furnace comprising an elongated hollow body portion, said hollow body being provided with a transverse horizontal wall dividing its hollow interior into a separate combustion chamber and heating chainber said wall being provided with an opening adjacent one end of said furnace to permit the products of combustion and heat to pass from said combustion chamber into said heating cl amber, a burner entering said combustion chamber at the end opposite the said opening leading to the heating chamber, a line for the escape of the products of combustion leading from said heating chamber, said heating chamber being provided with a plurality of openings for the reception of the articles to be heated, said openings being arranged in horizontal rows, shelf-like supports extending outwardly from the side walls of said furnace below said openings} andclosure members mounted on said supports and adapted to be moved into and out. of closing position with said openings.

in testimony whereof I have hereunto set my hand.

CHARLES KARRAL.

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