US1430714A - Tilting mechanism for containers, such as furnaces - Google Patents

Description

J. R. WYATT. TILTING MECHANISM FOR CONTAINERS,

SUCH AS FURNACES.

APPLICATION FILED NOV.8, 1918.

Patented Oct. 3, 1922..

2 SHEETS,SHEET I.

J. R. WYATT.

TILTING MECHANISM FOR CONTAINERS SUGH AS FURNACES. APPLICATION FILED NOV.8, 19l8.

. 4 309714 Patented Oct. 3, 1922.,

' SH ETS-SHEET 2- Patented Qct. 3, 1922.

JAMES R. WYATT, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE AJAX METAL COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

Application filed November 8, 1918. Serial No. 261,670.

T 0 all whom it may concern:

Be it known that I, JAMES R. WYATT, a citizen of the United States, residing at 20241 S. 21st Street, Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a certain new and useful Tilting Mechanism for Containers, Such as Furnaces, of which the followingis a specification.

My invention relates to counter-balancing and tilting mechanism capable of being ap-.

plied to furnaces for melting metal but having a more general application.

he purpose of my invention is to provide counter-balancing and tilting mechanism which shall turn the container about a predetermined point outside of its center of gravity,'and preferably about the spout, .so that the pouring point shall be as nearly fixed as possible.

A further purpose is to locate the bulk of the mechanism for tilting the container.

fication and in the claims.

I have preferred to illustrate my invention by but one general form thereof, selecting therefor a form which in use has proved to be simple, practical, highly efiicient and inexpensive and which at the same time well illustrates the principles thereof.

Figure 1 is a broken side elevation showing this preferred form of my invention.

Figure l is a broken side elevation of a modification. K Figure 2 is a section Figure 1.

Figure 3 isa broken side elevation of the same structure with the furnace in raised position.

Figure 4 is a front elevation of the structure in Figures 1 and 2 with part of the counter-balancing weights broken away.

upon line 2--'2 of shaft is indicated at 11'. made up of counterweight-supporting arms In the drawing similar numerals indicate corresponding parts. Though my invention is suited to the liftmg and tilting of any container which is desirably tilted about a point outside of its center of gravity its greatest usefulness thus far has been found in furnaces. As I have applied it to electric furnaces of the type shown in my Patent No. 1,201,671 of Oct. 17, 1916', I have preferred to illustrate it and describe it in connection with and in terms of such an electric furnace but without any intention of limiting it to such use alone.

The furnace shown has been fully described in my patent. It will suffice to say that it comprises a body 5 providing a pool, connecting with a member 6 providing a channel in which the metal is heated and circulated by electric current induced by means of atransformer 7. The transformer winding 8 is connected with the current supply by extensible leads not shown, permitting the tilting movement or is disconnected for pouring as preferred. As my furnace maintains the electric current path during pouring there is a considerable advantage in maintaining the current How then also. The spout is shown at 9 and the body, channel and spout are suitably lined.

Describing the preferred construction In any pair of pedestals 10 I support a counterweight-lever shaft '11 rigidly secured to a pair of levers 12, by screws 13 passing through bosses 1 1. The axis of the The levers 12 are 15 at one end and furnace-supporting arms 16-at the other end.

The mechanism for turning the shaft illustrated comprises a worm wheel 17, turned bya worm 18,-up0n shaft 19. Mitre gears 20 connect this shaft with a control shaft 21' surmounted by hand wheel 22. For'clearness in illustration I have omitted the usual bearings for shafts 19 and 21. The arms 1 15 of the counterweight levers, are connected at their ends by a channel bar 23, upon which separate counter-weights 24 may be placed. The weights are slotted upon their under sides to pass over the bar 23 from above and remain in gravity alone. V

For adjustments not requiring as much additional weight as is represented by a position because of 105 "nace by two supporting bars 28, one on each counterweight 24, I provide one or more sliding counterweights 26, similarly slotted so as to fit over and slide upon the arms 15 and secured in adjusted positions by any means, such as set screws 27; with the purpose that the weight or weights 26 shall provide all intermediate counterweight adjulstments between that secured by different weights 24.

The levers 12 are connected with the furside of the furnace, which are pivoted to the arms 16 of the levers, as by pins 29 having a common axis 29', and to the'furnace by trunnions 30 having a common axis 30. Suitable split pins retain all such pivoted parts in position.

The bars 28 must be 'held in approxi-.

mately perpendicular position and this is conveniently taken care of by arms 31 which may be pivoted in the pedestal 10 about pins 32 having a common axis 32,

-and to the bars 28 by pins 33 having a com- 'mon axis 33.

The bars 28 may be maintained in vertical position b making the spacing between axes 32' an 33 equal to that between axes 11 and 29, and the spacing between axes 32 and 11 equal to that 16 or the bottoms 34 of bars 28 engage a' stop, as 35.

Where it is intended to support the entire weight of the furnace by the bars 28, the axis 30 is chosen so as to intersect a verticalline through the center of gravity of the furnace, preferably near the center of gravity of the furnace when fully charged. If at least as high as the center of gravity of the fully charged furnace,

there will be no tendency of the furnace to swing when in the position shown in Figure 1.

It will be obvious that the support of the furnace may be divided between the bars 28 and some other bar, such as 36, or preferably bars on opposite sides of the furnace by which the turning of the furnace may be effected and I have shown such a construction inFigure 1 where the bars 28' are connected with the furnace about some other axes 30 which does not pass'through the vertical line from the center of gravity of the furnace and the unbalanced weight of the furnace and content are supported by bars 36'.

Whether the bars 36 or 36 be intended for tilting purposes chiefly, or for supporting any considerable share of the weight of the "furnace, it will be obvious that the strain (and possibly pressure) upon it will vary with variation in the center of gravity during the pouring operation.

In either event, the bars 36 or 36, are pivoted to the furnace at one end, as about trunnions 37 having a common axis 37 and to one of the arms, 16 and 31, preferably to the upper of these in order to reduce the length of bars 36 or 36. I prefer to con-- nect the bars 36 or 36 with the arms 16 or 31, as the case may be, by pins 38, having a common axis 38', located between bars 28 and the pedestals, as shown, because this is the intersection of the plane through axes 30 and 37 with the plane through axes 11' and 32. The positions of these planes are shown bylines 39 and 40 and the turning axis is located at 41, all in Figure 1. By elemental design, the axis, at which there will be neither vertical nor horizontal movement, but only turning ,movement, may therefore be made to pass through the outer end of the pouring spout, as shown in Figure 1, or any other point desired such as the base of the pouring spout in Figure 1*. The fixing of the pouring oint greatly simplifies and facilitates t e pouring, secures greater precision and safet and avoids undue movement of the mol s.

I recognize that variations from parallelism of thie bars 28 and 36 and of the connecting parts forming this second parallelo-' gram would still secure desirable results including the same initial and final positions of the spout with little movement between and that but one bar 36 may be required. For some purposes it may be desirable to depart from parallelism of the arms and bars respectively, or to alter the other sides of the quadrilaterals formed, in order to accelerate or retard the relative rate or vary the total movement of the parts of the furnace, all of which can be worked out readily to suit the conditions of any equipment, or the whim or preference of any designer in view of the information given by me.

Under these circumstances, the overbalancing]weight of the content will tend to hold the furnace down in the position shown when fully charged and during the heating operation. The furnace will therefore offer an op posing overbalance to the tilting operation by hand wheel 22. The tilting of the furnace will take place coincidentally with'the lifting. Where enough of the content has been poured for the furnace and remaining content to be over-balanced the counterweighting will tend to lift the furnace. When the heat has been pouredapproximately as much effort upon hand wheel 22 will be required to lower the furnace as had previously been required to raise it, a

The position shown in Figure 3 is selected to correspond with the maximum tilting for pourin for which the furnace is designed and wil normally not permit draining of arms, supporting bars pivoted to these arms anyI part of the channel.

. aving thus, described my invention,

what I claim as new and desire to secure. by

Letters Patent is:

1. In lifting and tilting mechanism, a pair of quadrilateral systemsof arms, bars and pivotal connections on each side of a furnace having part of one quadrilateral system forming part of the other, counterweighting mechanism for the system and a container forming one side of one quadrilateral system and lifted and tilted thereby.

2. In lifting and tilting mechanism for containers, a quadrilateral system of lifting, guiding arms and counter-weighting connections, in combination with a container and a quadrilateral system of bars and connections interconnected with the first quadrilateral system to lift and tilt the container.

3. In tilting mechanism for pouring from a container, counterweight levers terminating in lifting arms below the container, a container, approximately vertical supporting bars connected with the levers and contamer, arms connected at one end with the bars to maintain them in substantially vertical position and a tilting bar connected with the container at one end and with one of the arms at the other end.

4. In tilting and pouring mechanism for containers, a pair of levers having lifting arms, a pair of supportingbars on opposite sides of the container, connected with the arms at one end of each and with the container at the other end thereof, a container, guiding arms for maintaining the supporting bars against undue swinging movement, counterweighting mechanism for the system and a tilting connection between one of the arms and the container.

5. In tilting and pouring mechanism for containers, a container, a pair of levers on opposite sides of the container and having lifting arms, bars pivotally connected to these arms and to the container, guiding and side supportin arms for these bars substan tially parallel with the lifting arms, counterweighting mechanism for the system and a bar pivotally connected with one of the arms and with the container cooperating with the first bars in tilting the container.

6. In tilting and pouring mechanism for containers, a container, levers therefor having lifting arms, connections therefrom supporting the major part of the weight of the container, guiding and side supporting arms for the connections, substantially parallel with the lifting arms, counterweighting mechanism for the system and a connection from the container to one of the arms engagirig it at an intermediate point.

- 7. n tilting and pouring mechanism for containers, a container, levers adapted to turn-about an axis and having supporting at the other end, guiding and side supporting arms having fixed pivot points at one end, connected with the bars at the other end and substantially parallel with the lifting arms, counterweighting mechanism for the system and a tilting connection between one of the arms and the container substantially parallel with the supporting bars and located between the supporting bars and the fixed pivot points.

9. In tilting and pouring mechanlsm for containers, a container, a pair of levers, a connection between them joining them at one end of each lever so as to cause them to move together, the lovers being pivoted at an intermediate point and extending in the form of supporting arms at their other ends, supporting bars pivoted to these arms at the ends and to the container, guiding arms having fixed pivots at one end, extending substantially parallel to the supporting arms and pivoted at their other ends to the bars, counterweighting mechanism for the ing arms at one end and to the container at the other end.

10. In tilting and pouring mechanism for containers, a container, a pair of levers, a connection between them oining them at one end of each lever so as to cause them to move together, the levers beingpivoted at an intermediate point and extending in. the form of supporting arms at their other ends, supporting bars pivoted to these arms at the ends and to the container, guiding arms having fixed pivots at one end, extending substantially parallel to the supporting arms and pivoted at their other ends to the bars, countrweighting mechanism for the system and tilting bars pivoted to the guiding arms at one end and to the container at the other end, the planes through the axes of the different arms and through the container pivots of the bars, respectively, determining the axis of revolution of the container.

11. In tilting and pouring mechanism for containers, a container, a pair of levers, a

connection betweenv them joining them at one end of each lever so as to cause them to move together, the levers being pivoted at an intermediate point and extending in the form of supporting arms at their other ends,

supporting bars pivoted to these arms at the ends and to the container, guiding arms having fixed pivots at one end, extending substantially parallel to the supporting arms and pivoted at their other ends to the bars and tilting bars, counterweighting mechanism for the system pivoted to the guiding I arms at one end and to the container at the other end, the planes through the axes'of the different arms and through the container pivots of the bars, respectively, passing approximately through the pouring spout of the container.

12. Acounterweighting and tiltingmechanism for one side of a furnace comprising a pair of parallel arms one above the other and both having fixed pivot points, worm wheel tilting means for one of the arms, an.

counterweighting connections for the other side of the furnace.

13. Acounterweighting and tilting mechanism for pouring from-furnaces, comprising sets of parallel arm and bar constructions on opposite sides of the furnace, each made up of a pivot points, tilting means for one of the arms, a counterweighting extension from one of the arms, a connecting bar between the parallel arms, extended and pivoted to the furnace and a second bar connected with one of the parallel arms and pivotedto the furnace at a distance from the pivot point of the extended arm.

14. Counterweighting and tilting mechanism for a furnace comprising pairs of parallel arms spaced and pivoted at fixed pivot points, one above the other, a line through the pivot points cutting the axis about which the furnace turns, counterweighting extensions from one of said arms of each pair, a shaft connecting the counterweighted arms, worm and worm wheel tilting means for said shaft and arms, a connection between the parallel arms on each side of the furnace extended and pivoted to the furnace and a connection between the furnace and one of said parallel arms pivoted to the furnace, so that a line through the furnace pivot points will intersect the intended axis of turning of the furnace.

15. In lifting and tilting mechanism, a container, a lever lifting mechanism therefor, counterweight arms for said lever system, a transverse connection between the outer ends of the arms, counterweights on the transverse connection and counterweights on the arms adjustable toward and JAMES R. WYATT.

pair of' parallel arms having fixed

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