US724852A - Portable forge. - Google Patents

Description

No. 724,852. PATENTED APR. 7, 1903 A. J. GURNEY. PORTABLE FORGE.

APPLICATION IILE D APR. 9, 1900.

N0 MODEL. 2 SHEETS-SHEET l.

Witnesses Q2 a I r Q fnven'ton fl/bertJGurnay,

- q/wsflzrymm No. 724,852. v PATENTED APR. '7, 1903*. A. J. GURNEYV.

PORTABLE FORGE.

APPLICATION PIL BD APR. 9, 1900.

110 MODEL. 2 SHEETS-SHEET 2.

,JP" D2 10%(955683- 1 I i Inventor- 'fl/bertJ. Gurney;

UNITED STATES PATENT OFFICE.

ALBERT J. GURNEY, OF STREATOR, ILLINOIS.

" PORTABLE FORG E.

SPECIFICATION forming partof Letters Patent No. 724,852, dated April 7, 1903.

Application filed April 9, 1900. Serial No. 12,095. (No model.)

To all whom, it may concern:

Be it known that I, ALBERT J. GURN EY, a citizen of the United States, and a resident of Streator, in the county of La Salle and State of Illinois, have invented certain new and useful Improvements in Portable Forges, of

which the following is a specification.

The object of my invention is primarily to provide a portable forge which will occupy the least possible space with a given strength of blast and is designed to be closely packed and a portion of the hearth made to fold and adapt it to be passed through narrow openings, such as through the furnace-doors or manholes of boilers and through contracted spaces in the framework of bridges, trusses, and structural iron-work of any kind.

It is also an object of the invention to make the forge of few parts to secure lightness in order that it may be easily carried upon frames of structures to any desired height.

A further object of my invention is to provide an'improved gear for driving the blower and to provide an improved hearth and an improved throat, ash, and air chest located between the fan and the blower-case.

The invention consistsin certain details of construction andcombination of parts hereinafter particularly described and claimed.

In the accompanying drawings, Figure 1 is an end elevation of my improved forge with the hearth and blower-casing in section. Fig. 2 is a side elevation thereof. Fig. 3 is a plan view. Fig. 4 is a perspective view of the main shell, and Fig. 5'is a perspective view of the cap-shell, which together form the hearth and throat and blower-casing complete.

The forge-body A is formed of two partsa main shell A and a cap-shell A --which meet in a central vertical plane, dividing both the hearth, blower-chamber, and throat in two like and substantially equal parts, each of which have lugs a to receive bolts a, which secure said parts together in a compact body, which may be easily separated togive access to every part of the interior thereof. The blower-chamber B, the throat and ash chamber C, and the hearth D are located one directly above the other, thus affording a compact structure and one much stronger than when the said parts are' extended laterally from beneath the twyer. The ash and air rectly below the hearth and above the blower,

thus providing a strong, light, and compact shell, which when made in two sections and divided centrally and transversely to the axis of the fan-blower is adapted to be taken apart and any obstructionsuch as clinkers,molten metal, or pieces of metal rivets and like obstructionsreadily removed.

The arrangement of the air-chest directly over the blower-chamber provides a returnpassage and permits the use of an ash and air chamber of sufficient capacity to receive the full amount of blast from the blower and direct it in a suitable manner to a point directly below the opening in the bottom of the hearth without having to extend the casing or shell beyond the area of the blower-shell. I am thus enabled to secure a direct and evenly-regulated blast and also to secure the greatest possible strength and compactness of construction.

The hearth has a fixed section D upon the cap shell A and a hinged, section D which may be folded over thereon, as shown by dotted lines in Fig. 1. The main shell A of the forge-body has a fixed hearth-section D, to which is hinged a back extension D which may also be folded over the top of the hearth, as shown in dotted lines in Fig. 1, when the forge is to be carried about or passed through small doors or openings. The two half-sections may also be readily separated by removing thebolts a in order to permit the forge being passed through very small or conhorizontal portion of the neck I), the vertical portion of the said neck being tangent to and leading from the blower-chamber B. The said throat is also formed with a transverselydished conduit 0 for the ash-receptacle '0 which conduit leads to a discharge-spout upon one side of the forge-body, having an pression in the handle-iron.

aperture and cover 0 atthe lower end thereof above the eye of the blower-chamber. The ashes may thus be easily withdrawn from the ash-receptacle.

A shaker and twyer-block E of well-known form is supported upon a shaft 6 directly below the nozzle-aperture in the throat, and the coals may be drawn together closely over the lowermost depression of the bowl shaped hearth or over any number of the said depressions or banked up over and around the article to be heated, the peculiar form of the hearth adapting it to receive either a very small article, as a rivet, or a much largeran ticle and still keep the coals well surrounding it and in close proximity to the blast. The coal may he banked upon the fiat section of the hearth and up against the back extension D thereof, and it may be kept dry and in a charged condition in part, while the main body of the coal maybe wet down upon the extended hearth and be held. in reserve for future use or for maintaining a lower heat and longer period of exposure of the object to be heated.

The L-shaped return-throat, located between the blower-chamber and the bottom of the hearth, is a most important feature of my invention, as it secures a direct connection, great compactness and strength, and a most effective retardation, direct deflection, and an even and continuous discharge of air through the throat and nozzle-aperture.

The blower-chamber B has sleeves b b b projecting laterally therefrom to receive, respcctively, the threaded ends of stud-axlesf f of the externalcrank-actuated driving-gear F and the internal intermediate gear F and pinion F the said pinion being arranged to mesh with the external gear F and the internal gear F adapted to mesh with a pinion F upon the shaft f of the fan G, the latter being thus supported within the blower-chamber and driven at any required speed by a set of gear-wheels securely and compactly arranged within the area of the body of the forge. The handle-iron f of the drivinggear F is L-shaped, one of the arms supporting the rollerf thereof projecting outwardly and from the face of the gear, the other arm of said handle-iron being held flat against the face of the gear between lugsf thereon by means of a bolt f thereon, which passes through said lugs and acrossa transverse de- IVhen the forge is not in use, the handle-iron may be turned around with the roller f projecting inwardly from the outer face of the gear F, as shown by dotted lines in Fig. 1. The main shell A has legs a bolted thereto and the cap-shell has legs a cast thereon to properly support it. The forge is constructed of such size and so very compactly that when the parts of the hearth are folded together the same will readily pass through a manhole or other opening sufficiently large to permit a man of average size to pass therethrough.

Should it ever be necessary, the removal of the four bolts a permits the device to be knocked down, reducing the size sufficiently to permit the same being passed through much smaller apertures.

I claim as my invention 1. A portable forge comprising two verti= I cally-joined, approximately equal shells or casings forming when united a blower-chamber, a throat and ash-chamber and a hearth all arranged in vertical alinement integrallyconnected hearth-sections on each shell, an unfolding portion on each hearth-section and a train of gears adapted to operate the forge, and disposed to coincide with the contour of the shells.

In a portable forge, the combination with a hearth, of hinged sections and a central downwardly-stepped depression, an ash-receptacle situated immediately below said hearth and provided with a transverse conduit, a discharge-spoutleading from the conduit, a cover for said discharge-spout, a fancasing situated immediately below said ashreceptacle, a fan mounted in said casing and means for revolving said fan.

3. In a portable forge, the combination with a hearth having infolding hinged sections and a central section formed of a plurality of graduated shelf depressions, a dished ash-recep-- tacle situated immediately below said hearth, a fan-casing situated immediately below said ash-receptacle, an air-chest leading vertically and tangentially from the fan-casing and having a horizontal elbow at its upper end leading to the ash-receptacle, a fan mounted in said fan-casing and means for operating said fan.

ALBERT J. GURNEY.

Witnesses: O. H. SCHAFER, Gno. M. MAYER.

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