US1937734A

US1937734A - Leveling bar for coke ovens

Info

Publication number: US1937734A
Application number: US585439A
Authority: US
Inventors: Charles E Underwood
Original assignee: Bethlehem Steel Corp
Current assignee: Bethlehem Steel Corp
Priority date: 1932-01-08
Filing date: 1932-01-08
Publication date: 1933-12-05
Anticipated expiration: 1950-12-05

Description

1933. c. E. UNDERWOOD LEVELING BAR FOR COKE OVENS Filed Jan. 8, 1932 Jrwe'ntoz Patented Dec. 5, 1933 LEVELING BAR FOR cons ovENs Charles E. Underwood, Bethlehem, Pa., assignor to Bethlehem Steel Company; a corporation of Pennsylvania Application January 8, 1932. Serial No. 585,439 14 Claims. (01. 212-23) This invention relates to leveling bars for coke ovens, and it has particular relation to constructional features thereof.

Anobject of this invention is to provide a leveling bar that will level off a charge of coal in less time than will a bar such as iscornmonly used.

.Another object is to provide a leveling bar that is comparatively light in weight yet very rigid and economical to construct.

A still further object is to provide a leveling bar that will not easily clog.

Leveling bars for coke ovens consist ordinarily of a doubleframework of structural steel. Generally, the structure consists of a. pair of spaced side members with spacing members that operate to distribute thecharge of coal along the length of the oven; Due to confining nature of the side pieces and the several spacing pieces, the. coal frequently becomes wedged or lodged therebetween which greatly reduces its efiiciency. Also the box like structure tends to confine the material instead of distributing it. quickly and efficiently. Y r

In accordance with myinvention, the leveling bar comprises a central web member to which are attached a plurality of wingpieces that project from the web to form pocketshaving openings extending outwardly from each'side of the web, thereby reducing the tendency to clog or choke up with material. In order to obtain lateral stifiness, a series of rods are attached longitudinally of the web in the form of trusses which overlap 01' stagger each other. These truss rodsalso assist in the leveling of the charge due to their tooth like formation which have a cutting or rasping effect on the charge as the leveler is reciprocated.

This bar may be applied to any reciprocating apparatus used for this purpose, and due to its particular construction much time is saved in the leveling operation, and operating costs are materially reduced dueto its increased efliciency.

- Other objects and novel features of my invention will be hereinafter more fully described.

In the accompanying drawing:

Figs. 1 and 2 are respectively plan and side elevational views of a leveling bar constructed in accordance with my invention;

Fig. 3 is an enlarged plan view of a portion of the leveling bar; and

Fig. 4 isa sectional view taken on line IV-IV of Fig. 3. l

The leveler comprises a central web member or bar 5 to which are attached a number of longitudinally spaced wing plates 6 on opposite sides plates and rods to the central bar.

truss rods;

of the bar. These plates are welded to the bar along their inner edges as shown at 11 in Fig. 4.

. Referring to Fig. 1 it will be noted that rods '7 and 8 comprise the upper trusses, and rods 9 and 10 the lower trusses. 1 Rod '7 starts near the forward end 12, of the bar, while rod 8 is started midway of the first truss formed by rod 7. The bottom rod 10 starts near the forward end of the bar but rod 9 starts at the same point as rod 8. The rods are carried over and under the .wing plates in such a manner so as to form aseries of trusses extending substantially the whole length of the bar. It will be noted that the rods 7 and 8 forming the upper trusses run parallel, likewise the-rods 9 and 10 that form the lower trusses are parallel but run in the opposite direction to the upper trusses. By this arrangement the upper and lower trusses cross or stagger each other thus forming a series of reticular openings 13 on each side of the bar 6 when viewedfrom the top or bottom of theleveler.

Figs. 3 and 4 show the arrangement of the various' members and the manner of fastening the Plates 6 are notched at their diagonally opposite corners 14 and 15 so as to form seats or bearings for. the The rods are welded at their points tozthe plates and to thecentral bar, and the plates themselves are welded to the bar thus forming a rigid and unitary openwork structure that is comparatively light but very rigid for its length. One of the reasons why this leveler is light yet rigid, is due to the fact that the central bar is imperforate. No bolts or rivets are used to fasten the wing platesand struts to the bar which would tend 'to weaken the bar section, thus allowing a section of minimum proportions to be used for this purpose. The vertical strength of the bar is obtained from its depth of section, while its transverse strength is obtained by means of the trussed rods. By this construction the full value of the bending resistance of the bar section is preserved throughout the major portion of its length. Obviously the section 'of the bar may be either a plain rectangular shape of constant section, or it may be made of a plurality of pieces secured together to obtain the same result. However, a single rectangular section is preferable because it is easily obtained. By keeping down the weight 1.05

of the leveler bar, its inertia is greatly reduced thereby reducing power consumption and shock to the reciprocating mechanism when the direction of movement of thebar is reversed. V

The forward end of the bar is tapered as shown 1.10

at 16 and is provided with a shoe plate 17 which tends to lift the forward end of the bar as it is pushed through the charge in the oven.

The rear end 18 of the bar is adapted to be secured to the reciprocating mechanism of a leveling machine.

Owing to the manner of charging an oven, the pulverized coal forms into conical heaps. The object of the leveler is to level oil these heaps. Heretofore this work was accomplished with a leveler leaving a box like structure which was slow in its leveling action due to the fact that the structure confined the charge between its side pieces.

When using a leveler according to my invention this objection is overcome as the pockets formed by the wing plates are open on the outside which allows the coal to be freely discharged therefrom. In addition to the advantages obtained by the open sided pockets, is the effect of the angular truss bar upon the charge as they are moved back and forth through the charge to be leveled.

The inclination of the rods tend to agitate and laterally push the material away from the central bar thus adding greatly to the efficiency of the leveler with the result that much time is saved in leveling an oven, thereby materially reducing power and operating costs.

Various modifications obviously may be made in the details of the foregoing construction without departing from the spirit of the invention as embodied in the appended claims.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

1. A leveling bar for coke ovens comprising a web-member and reinforcing means connected to said web so as to form passages for the material to be leveled.

2. A leveling bar, forcoke ovens comprising a web member and longitudinally trussed members connected to .said web on each side thereof to stilfen the web and to produce a spreading effect upon the material when the baris reciprocated therethrough.

3. A leveling bar for coke ovens comprising a web member, and a series of wing members projecting from each side of said web and fixed thereto so as to form vertical pockets for the material to be leveled, said pockets opening :outwardly from each side of the web member.

4. A leveling bar for coke ovens comprising a web member, spaced wing plates connected to said web, and reinforcing means'connected to said web and to said plates so as to form a series of trusses on each side of said web member whereby to stifien the web and to produce a cutting effect upon the material to be leveled when reciprocated therethrough.

5. A leveling bar for coke ovens comprising a single web member, and a series of reinforcing members connected to said web so as to form reticular passages for the material to be leveled.

6. A leveling bar for coke ovens comprising a web member, and an upper and lower series of reinforcing members connected to said web so as to form reticular passages for the material to be leveled.

7. A leveling bar for coke ovens comprising a web member, and an upper and lower series of angularly formed members connected to each side of said web in staggered relation so as to form reticular passages for the material to be leveled.

8. A leveling bar for coke ovens comprising a central bar and a plurality of sinuously formed reinforcing bars extending longitudinally of said central bar so as to form a unitary structure having reticular openings on each side of the central bar so as to provide passages for the material to be leveled.

9. A leveling bar for coke ovens comprising a central bar, and upper and lower series of longitudinally extending angularly formed bars connected to each side of said central bar, said upper and lower series of bars being in staggered relation so as to form reticular openings relative to the vertical axis of the central bar for the passage of material when the leveler is reciprocated therethrough.

10. A leveling bar for coke ovens comprising a web member, spaced wing plates connected to said web, and a plurality of angularly formed bars connected to said web and to the outer corners of said plates so as to form a series of open trusses on each side of said web member for the passage of material to be leveled and to produce a cutting and leveling effect upon the material when the bar is reciprocated therethrough.

11. A leveling bar for coke ovens comprising a web member, spaced wing plates connected to said web, said plates being notched at diagonally opposite corners, and rods connected to said web and to the notched corners of said plates so as to form trusses on opposite sides of said web member.

12. A leveling barfor coke ovens comprising a web member, spaced wing plates connected to said web, each plate having a notch at one of its outer corners and another at its inner corner, sinuously formed rods connected to the outside corner of one plate and to the inside corner of an adjacent plate so as to form a series of staggered trusses one over the other for the web member.

13. A leveling bar for coke ovens comprising a central supporting member, rods positioned longitudinally of said member so as to reinforce the same against lateral flexure and to produce a cutting or leveling efiect upon the material to be leveled when operatively positioned.

14;. A leveling bar for coke ovens comprising a central supporting member, wing plates secured to each side of said member, longitudinal rods connected to said central member and to said plates so as to reinforce said central member against fiexure and to produce a lateral movement of the material when the leveler is reciprocated through the material to be leveled.

CHARLES E. UNDERWOOD.