US2481433A

US2481433A - Tilting means for electric furnaces

Info

Publication number: US2481433A
Application number: US701551A
Authority: US
Inventors: John K Mcbroom
Original assignee: Individual
Current assignee: Individual
Priority date: 1946-10-05
Filing date: 1946-10-05
Publication date: 1949-09-06
Anticipated expiration: 1966-09-06

Description

Sept, 6, 1949. J. K. McBROOM TILTING MEANS FOR ELECTRIC FURNACES FiledQct. 5, 1946 INVENTOR.

JOHN K. M Baoom BY F C1; 2. I W74M\ ATTORNEY Patented Sept. 6, 1949 UNITED STATES P TENT OFFICE.

2,481,433 TILTING MEANS FOR ELECTRIC FURNACES John'K. McBroom, Waukcsha, Wis. Application October 5, 19%, Serial No. 701,551

1 Claim. 1

This invention relatesto electric furnaces and is particularly directed to tilting mechanism therefor. I

Objects of this invention are to provide an electric furnace which is so made-that the nt-- most ease is obtained in tilting the furnace wheth er it is charged or uncharged, and which is so made that there is a bias 'or tendency to tiit towards discharging position when it is charged and a bias or tendency to tilt or rock back to upright or normal position when it is empty.

In greater detail, further objects are to provide an electric furnace which is supported by mental members located on opposite sides of the furnace and rigid with the furnace which roll on tracks and which are equipped with peripheral teeth which mesh with racks formed rigid with the tracks so that both sides of the furnace are positively moved or urged forwardly or rearwardly, and to provide a hand wheel or power member with a small pinion concentric with the segmental members and meshing with an upper rack paralleling the tracks so that when the pinion rotated it will cause the furnace to roll or rock forward or backward as desired.

An embodiment of the invention is shown in the accompanying drawings, in which:

Figure 1 is a side elevation of the furnace showing it in upright or normal operating posh tion, such view being partly broken away.

Figure 2 is a view showing the furnace in tilting position with parts broken away.

Figure 3 is in enlarged sectional view on the 1ine 3-3 of Figure 1.

Referring to the drawings, it will be seen that the shell or furnace body is indicated by the reference character I and the top by the reference character 2. A vertical adjustable standard 3 carries a transversely extending electrode holder 4 which, in turn, carries the electrode 5. The furnace is provided with a spout or discharge member 6. It is supported by a pair of segmental flanged members I which are rigid with the body I of the furnace and are located on opposite sides thereof. These segmental members I are provided with segmental teeth 5. The segmental members I support the furnace by riding upon tracks 9 on opposite sides of the furnace carried by the standards Ill. These tracks are preferably slightly upturned at their ends as indicated at 9' to provide means for preventing excessive rocking of the furnace in either direction. The tracks 9 are provided with rack teeth II which are formed integrally with 2 the track and which mesh with the segmental teeth 8 0f the members I. 1

An upper horizontal rack I2 is carried by the standards I3 or end members A single rack I2 is provided on one side only of the furnace. This rack coacts with a small pinion I4 which is rigid with a hand wheel I5 or with a power driven member of any suitable type. ,For instance, the hand wheel I5 and the pinion I 4 may be mounted rigidly upon a small shaft or suitable shaft Iii which is revolubly mounted in the side portion Ii of the furnace body I.

A detent or pawl I8 is loosely pivotally carried by the shaft I 6 at its bifurcated ends which ends are shown in section in Figure 3. Normally the pawl or detent I8 locks between successive teeth of the rack I2 and holds the furnace against rocking in either direction. When it is desired to rock the furnace, the pawl I8 is rocked upwardly to the dotted line position shown in Figure 1 and is arrested by means of a pin I9. When the pawl is detached, it is obvious that the furnace may be rocked.

The rocking of the furnace is accomplished by rotating the hand wheel I5 in a counter-clockwise direction as viewed in Figure 1. It is to be noted that the segmental members 7 are concentric with the pinion I4 and it is, therefore clear that the pinion I4 will travel horizontally along the rack I2 and will move the furnace to the left causing it to rock to the position shown in Figure 2. After the furnace has been emptied, it is again rocked to the position shown in Figure 1 by rotating the hand wheel IS in a clockwise direction.

The proportion of the parts is such that when the furnace is loaded, the center of gravity is below and slightly to the left of the axis of the pinion I l, as indicated at A, see Figure 1, thus furnishing a bias or force urging the furnace towards discharging position. When the furnace is empty, the center of gravity is to the right and below the axis of the pinion I4, as indicated at B, and consequently there is a bias or force urging the furnace to the right or to its normal position when the furnace is empty. In other words, the proportion of the parts is arranged to provide a center of gravity when the furnace is empty and untilted rearwardly and below the axis of the pinion and forwardly and below the axis of the pinion when the furnace is charged and untilted.

It is to be noted that the weight of the furnace is borne by the segmental members I which ride upon the tracks 9, and that there is no wedging between the segmental teeth 8 and the rack I 1.

Further it is to be noted that the furnace, though relatively heavy, is very easy to rock in view of the mechanism hereinabove described as a considerable multiplication of force is obtained by the large hand wheel and the small pinion I 4. These members are used merely to shift the furnace, the shifting coasting with the segmental pinions 8 and the track 9 to tilt the furnace while it is being shifted.

Thus it is clear that the minimum of effort is required in operating the furnace.

It is to be noted that the mechanism is very simple and is easy to produce and is also reliable in operation.

Although this invention has been described in considerable detail, it is to be understood that such description is intended as illustrative rather than limiting, as the invention may be variously embodied and is to be interpreted as claimed.

I claim: I

An electric furnace having tilting and supporting means and having a body portion, said tilting and supporting means comprising a, pair of segmental members rigid With said body portion and located on opposite sides thereof and provided with segmental teeth, stationary tracks located on opposite sides of said body portion and ar- 4 ranged to support said segmental members, racks adjacent said tracks meshing with the segmental teeth of said segmental members, an upper rack located above one of said first mentioned racks and parallel thereto, a pinion independent of said segmental members and freely revolubly mounted about an axis coinciding with the axis of said segmental members and meshing with said upper rack, and means for rotating said pinion to thereby bodily shift said body portion and cause said body portion to tilt.

JOHN K. MCBROOM.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,378,972 Moore May 24, 1921 1,392,965 Priwer Oct. 11, 1921 1,444,584 Clamer et a1 Feb. 6, 1923 1,553,618 Kay Sept. 15, 1925 1,654,419 Greene Dec. 27, 1927 1,751,856 Greene Mar. 25, 1930 1,972,868 Case Sept. 11, 1934 2,059,660 Sheets Nov. 3, 1936 2,202,224 Moore May 28, 1940