US1361186A - Coke-oven-door machine - Google Patents

Description

L. A. SANFORD. COKE'OVEN DOOR MACHINE Patented Dec. 7, 1920.

3 SHEETS-SHEET APPLICATION FILED rzsQz. 1920.

L. A. SANFORD. COKE OVEN DOOR MACHINE.

APPLICATION FILED FEB. 2. 1920.

Patented Dec. 7, 1920..

3 SHEETS-SHEET 2- L. A. SANFORD.

COKE OVEN DOOR MACHINE.

APPLICATION'HLED FEB. 2, 1920.

Patented Dec. 7, 1920.

3 SHEETS-SHEET 3.

[72/ 2/6 rwor UNITED STATES PATENT OFFICE.

LOUIS A. SANFORD, OF CHICAGO, ILLINOIS, ASSIGNOR TO AMERICAN COKE & CHEMI- CAL COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF MAINE.

COKE-OVEN-DOOR MACHINE.

Specification of Letters Patent.

Patented Dec. *7, 1920.

Application filed February 2, 1920. Serial Hey-355,817.

To all whom it may concern.

Be it known that I, LOUIS A. SANFORD, a citizen of the United States, residing at Chicage, in the county of- Cook and State of Illinois, have invented certain new and useful Improvements in Coke-Oven-Door Machines, of which the following is a specification. 1

The present invention has to do with improvements in coke oven door machines that is, machines that are used for handling the doors of coke ovens and like apparatus. While the features of the invention are very well adapted for the handling of doors for coke ovens and the like, still they may also be used with advantage for other purposes. Therefore, I do not intend to limit the use of the features of the present invention to the handling of coke oven doors, except as I may do so in the claims.

I will state, however, at this point that inasmuch as machines embodying the features of the present invention are particularly intended for the handling of coke oven doors and the like,'I have chosen to illustrate the features of invention as used for this purpose, and will, therefore, describe a particular application of the present invention to such use.

The coke oven doors are generally very heavy and cumbersome. It is common practice to seat the doors into end openings or jambs .in the ends of the oven, and in order to insure a comparatively gas-tight joint and one which is capable of resisting the comparatively high temperatures encountered, it is a common practice to lute the doors when in place with'clay or mud which is packed in. around the joint between the door and jamb. In a short time this luting material becomes hard and forms an effective seal. When the door is to be removed, it is often necessary to apply a very large force not only on account of the weight of the door itself, but also on account of the presence of this luting material. The additional force necessary to break the seal of the luting material may run into the hundreds of pounds. In order to reduce the force or power necessary to be applied to the door so as to withdraw it from the oven, it

- is necessary to reduce the force required to break this seal. present invention is to provide a machine or apparatus which will withdraw the door One of the objects of the provide a construction of machine which will so handle the door as to break the seal by a shearing action commencing at one end of the door and'traveling along the edges of the same to the other end.

Another feature of the invention-has to do with the provision of a machine of such constructlon that as the door is moved away from or toward the oven opening, the lower end of the door will be held high enough above the platform or deck which is ordinarily provided adjacent to the lower ends of the ovens in order to thoroughly clear said platform or deck and any obstructions or materials which would ordinarily be found thereon.

Another feature of the invention has to do with the provision of improved means for taking the load of the door on to the door handllng apparatus. In this-connection, I will state that it is customary to advance he door handling apparatus into position adjacent to the door, and in so doing, unless the operator is very careful in his manipumoved into position adjacent to the door and makes contact with the door, said devices may yleld under spring pressure or the like,

to whatever extent is necessary to take up the strain and prevent the creation of unnecessary and dangerous shocks.

. Other objects .are to generally improve and simplify an apparatus of this type, and facilitate-the operation of the apparatus and handling of the doors.

Other objects and uses of the invention will appear from a detailed. description of the same which consists in the features .of construction and combinations of parts hereinafter described and claimed.

In the drawings: Figurel shows a side elevation of a construction of apparatus embodying the feaopen the oven;

' dotted lines the approximate final positions of the upper and lower ends of the door, and also showing by curves the approximate lines of travel of the upper and lower inner and outer edges of the door.

In the various figures I have-illustrated the features of the present invention, as the same may be used in a machine adapted to travel along a bench of coke ovens, the machine being suspended from suitable trackways or rails which are supported along the upper portion of the bench. It will be understood, however, that as far as the carriage mechanism is concerned, it would be possible to make use'of any suitable form of carriage whether suspended or otherwise,

and in some cases the use of a carriage might be entirely dispensed with. Y

Bearing the foregoing in mind, the back plate of a coke oven door is illustrated by the numeral 5. For purposes of convenience it is shown as having a pair of lifting hook sockets 6 and 7 by means of which 1t may be'engaged by the door handling apparatus. The use of such sockets is illustrated simply as a. matter of convenience, since any other suitable form of door engaging device might be used if desired. The buck-stay at one side of the oven door is shown by the numeral 8, and 'the buck-stay at the other side of the door by the numeral 9.

The door handling apparatus will usually be provided with a carriage adapted to travel along the bench of ovens into position adjacent to any particular door. In

such cases, there may be provided a pair -of tracks 10 and 11 extending along the upper portion of the bench of ovens and supported by the beams 12 and 13. lVhen the carriage same may comprise a pair of i downwardly depending yokes 14 and 15 reis used, the

'spectively, the upper portion of each yoke being provided with a pair of lugs 16 and 17 respectively. An axle 18 extends between the lugs 16, and an axle 19 extends between the lugs 17, flanged wheels 20 and 21 being provided on the ends of said axles and adapted to ride on the rails 10 and 11. A

motor 22 is provided for causing the carriage to travel along the rails in either direction under control and through the me- (hum of gearing or the like 23.

this figure also showing by If desired, rollers 24 may be journaled on the side faces of the yokes 14 and 15 adapted to engage the under faces ofthe beams 12 and 13 so as to prevent any possible sidewise tilting of the carriage.

Suitable reinforcement frame members are provided between the yokes 14 and 15. In the'construction illustrated, these take the form of a pair of X-shaped' frame mem bers 25, only one of which appears in Fig.

1. Any other reinforcement bars or frame members may be provided as necessary.

Thelower portions of the yokes 14 and 15 are bifurcated as clearly shown in Fig. 2, so that each one of them has a pair of separated arms 26 and 27. The lower ends of.

these arms are preferably inturned, and provide seats upon which are mounted crosswise extending tracks or rails 28 and 29. These rails lie at right angles to the direction of travel of the carriage. They serve to partially support and guide the door carrying element which will now be explained in detail. 1

1 This door carrying element includes a suitable framework adapted to traverse the carriage and also provided with means for engaging the lifting hook sockets 6 and 7- or other suitable elements on the door. In the particular construction illustrated, thedoor carrying element includes a .pair of .side frames 30 and 31 of relatively light but rigid construction. The side frames have their upper ends joined together'at a proper separation by cross pieces 32, and their lower ends are-also joinedtogether at proper separation by cross pieces 33. Consequently both of the side frames30 and 31 and assoiated elements move a s "a'r1g1d unit.

Between the forward central portions of the side members 30an'd 3,1 is a shaft 34 on the ends of which are the pinions 35 and 36. Loosely mounted on this shaft are the flanged wheels 37 and 38 which travel on the trackways 28 and 29 respectively. Above each of the pinions 35 and 36 and rigidly secured to the arms 26 and 27 respectively are the straight racks 39 and 40 with which the pin ions 35' and 36 mesh. It will, therefore. appear that upon rotating the shaft 34 in a counter-clockwise direction when viewed as in Fig, 1, the door carrier frame will be caused to move backward away from the oven itself. V

In order to prevent the door carrying frame from swinging down about the shaft 34 as an axis. and in order to control the movements of the door carrying frame. I have provided a pair of links 41 and 42 which are attached to other points on the door carrying frame sufficiently removed from the'position of the shaft 34to secure such control without undue strain on the parts. The upper ends of the links 41 and 42 are pivoted to the upper portiomof the 1,se1,1se

and 46 respectively.

Theparts are so arranged and relatively positioned that when the door carrying frame stands in the initial'position of Fig. 1, wherein it is ready to take the load of the door preliminary to removing the door, the frame members 30 and 31 stand in practically upright position, the links 41 and 42 being swung over toward the oven. When,

thereafter, the door carrying frame is moved away from the end of the oven, it will be evident that said frame will be caused to first tilt so as to swing its upper end rapidly away from the upper end of the oven, and after the links pass the vertical position, the door carrying framewill tilt back toward the vertical or upright position, and if the operation be continued through a sufficient distance, the door carrying frame will finally be restored to the vertical or uprightposition, but will then stand at a distance away from the oven equal to the amount of travel of the shaft 34 and wheels 37 and 38 along the trackways28 and 29. I

Between the upper portions of the frame members 30 and 31 is a lever beam or the like 47. the front end of which is provided with a hook 48 adapted to engage the upper lifting hook socket 6 on the door. The lever 47 is pivoted to the door carrying frame through the medium of a link 49, the upper end 50 of which is pivoted to the door carrying frame and the lower end 51 of which is pivoted to the lever 47. Consequently said lever 47 may not-only rock about a horizontal axis coincident with the pivotal point 51,-

but may also swing back and forth with respect to the door carrying frame itself. A pin52 serves to limit the amount of this outward swing, and a spring 53 around said pin tends to swing the link 49 outward so as to hold the hook 48 fully projected toward the door.

In the lower portion of the machine is an other lever'arm 54, the front end of which has a hook 55 adapted to engage the lower lifting hook socket 7. -This lever 54 is suspended by a link 56, the upper end 57 of which is pivoted to the door carrying frame and the lower end 58 of which is pivoted to the central portion of the lever 54. A limit pin 59 and spring 60 tend to maintain the hook 55 projected toward the door at the extreme limit as determined by the, pin 59 in a manner similar to that explained with regard to the lever 47.

A link 61.joins together the levers 47 and 54, so that they are compelled to rock on their pivots '51 and 58 in harmony. The connections between the upper and lower ends 62 and 63 of the link 61 with the levers 47 and 54 respectively, may be so placed 'in relation to the pivotal points 51 and 58 as to constitute a parallelogram, so that the hooks 48 and 55 will travel in perfect harmony.

cans are providedfor lowering the outer end 64 of the lever 47 so as to compel the hooks 48 and 55 to take the load'of the door. In the particular construction illustrated, said means takes the form of a worm and screw device including a hand wheel 65 and a column 66 pivoted on the connection 33 so that by rotating the hand wheel the outer.

end 64 of the lever 47 will be drawn down. Means'are provided for rotating the shaft 34 in either direction under the control of the operator so as to compel the door carrying frame to travel back and forth toward and from the oven. The particular construction illustrated for this purpose includes a beveled gear 67 on theshaft 34, a shaft 68 havinga beveled pinion 69 on its front end meshing with the beveled gear 67 and having a beveled gear 70 on its back end, a shaft 71 having a beveled pinion 72 on its lower end meshing with the beveled gear 70 and a beveled gear 73 on its upper end, and a motor 74 driving the beveled gear 73 through the medium of a beveledpinion 75.

The door carrying frame normally stands with the wheels 37 and 38 a slight distance back of the front ends of the trackways 28 and 29. When the hooks 48 and 55 are to be engaged with the lifting hook sockets 6 and 7, the door carrying frame is advanced toward the door a suflicient distance to. accomplish this purpose, and the springs 53 and 60 at such time serve to take up any shock occasioned by the engagement of the hooks with the door sockets. In order to prevent any possible over-riding of the wheels 37 and 38 on the tracks 28 and 29.-

I have provided the stops 76 on the front ends of the track. Similar stops 77 serve to prevent any over-riding when the door carrier is moved in the reverse direction.

-It is believed that the operation of this apparatus will be thoroughly understood from the explanation so far given, but in order that the nature of the movement of the door itself may be more readily understood and appreciated. I have illustrated in Fig. 3 the form of the curves which will be performed by the upper and lower inner and outer edges of the door itself when being moved toward and from the oven. Forthis purpose, I have also shown diagrammatically the door jamb 78 into which the door normally seats. The curves 79 and 80 show in a general way the movements performed by the lower and inner and outer edges of the door, and the curves 80 and 81 show in like manner the movements of the inner and outer edges of the upper end of the door. The full line position of the door in Fig. 3 shows the door at an intermediate position,

and the dotted lines in said figure illustrate end is withdrawn very much more rapidly than the lower end of the door, so that the tendency is for the luting material to be a broken or disengaged by a shearing action commencing at the upper end of the door and traveling downwardly along the jamb. For this reason, the amount of force or power necessary to withdraw the door is substantially reduced as compared to an arrangement in which the door would be withdrawn by a straight outward pull; and it will also be observed from this that during the early stages of the door removal away from the jamb, the lower end of the' door is raised rapidly a considerable distance above its original position, after which it moves outwardly 'in a rapid manner while maintaining substantially such elevation.

and afterward and finally the lower end of the door is moved down and straight out, so that the door finally comes back into' a position substantially parallel to its original position but removed from the door jamb or oven the desired distance. I v

Vhile I have herein shown and described only a single embodiment of the features of my present invention, still I do not limit myself to the same, except asl may do so in the claims. 1

I claim:

1. The combination with a bench of coke ovens having a pluralit ofdoor openings on one side, and a door for each opening, of a trackway extending along the upper portion of the bench adjacent to said door openings, a carriage traveling on said trackway, means for propelling the carriage along the trackway, a pair of bracket arms downwardly depending from said carriage and spaced apart an opening at right angles to the direction of the trackway, horizontal tracks on the lower portions of said arms and at right angles to the bench of ovens, a door carrier between the bracket arms aforesaid, wheels on the forward portion of the same adapted to travel on said trucks toward and from the oven openings, link connections between the rear portion of the door carrier and the upper portion of the carriage, the pivotal points of the lower ends of said links lying closer to the oven openings than the pivotal points 6f the u per portions of the links when the door carrier stands in the extreme forward position, whereby when the door carrier is moved backwardly away from the door openings, the rear portion of the door carrier is initially depressed by said links. and suitable devices in conjunction with the door carrier for supporting a door thereon,

the lower end of said link to providebetween them and for compelling the door to travel in harmony with the door carrier as determined by said links and said tracks, substantially as described.

2. The combination with a bench of coke ovens having a plurality of door openings on one side, and a door for each opening, of

a trackway extending along the upper portion of the bench adjacent to said door openings, a carriage traveling on said trackway, a pair of bracket arms downwardly depending from said carriage and spaced apart to provide between them an opening at right angles to the direction of the trackway, horizontal tracks on the lower portions of said arms and at right angles to the bench of ovens, a door carrier between the bracket arms aforesaid, wheels on the forward portion of the same adapted to travel on said tracks toward and from the oven openings, a link connection between the rear portion of the door carrier and the upper portion of the carriage, the pivotal point of lying closer to the oven openings than the pivotal point of the upper portion of the link when the door carrier stands in the extreme forward position, whereby when the door carrier is moved backwardly away from the door openings, the rear portion of the door carrier is initially depressed by said links, and suitable devices in conjunction with the door carrier for supporting a door thereon, and for compelling the door to travel in harmony with the door carrier as determined by said link and said tracks, substantially as described.

3. The combination with a bench of coke ovens having a plurality of door openings on one side, and adoor or each opening, of a trackway extending along one side of the bench of ovens adjacent to said door openings, a carriage mounted to travel on said trackway, spaced apart brackets on said carriage providing between them an opening at right angles to the direction of the trackway. horizontal tracks on said brackets, and at right angles to the bench of ovens, a door carrier between said brackets, wheels on the forward portion of the door carrier-adapted to travel on said tracks toward and from the door openings, a link connection between the rear portion of the door carrier and the carriage at a point of greater elevation than the link connection to the door carrier. the pivotal point of the lower end of said link lying closer to the oven openings than the pivotal point of the upper portion of the link when the door carrier stands in the extreme forward position whereby when the door carrier is moved backwardly away from the oven openings. the rear portion of the door carrier is 'initially depressed by said link, and suitable devices in conjunction with the door carrier for supporting a doortherememes on and for compelling the door to travel in harmony with the door carrier as determined by said link and said tracks, substantially as described.

4. The combination with a bench of coke ovens having a plurality of door openings on one side, and a door for each opening, of a trackway extending along one side of the bench adjacent to said openings, a carriage adapted to travel on said trackway, a bracket on said carriage, a door carrier adjacent said bracket, a horizontal guiding connection between the forward portion of the car rier and the bracket and compelling such portion of the door carrierto travel in a horizontal line, a link connection between the rear portion of the carrier and a point on the bracket at greater elevation than the link connection to the carrier, the pivotal point of the link connection on the carrier lying closer to the oven openings than the pivotal point of the link connection to the bracket when the carrier stands in the eX- tremc forward position, whereby when the door carrier is moved backwardly away from the door openings. the rear portion of the door carrier is initially depressed by said link connection, and suitable devices in conjunction with the door carrier for supporting a door thereon and for compelling the door to travel in harmony with the door carrier as determined by'said link and said.

track, substantially as described.

5. The combination with a bench of coke ovens having a plurality of door openings in one side, and a door for each opening, of a trackway extending along the side of the bench adjaccntto said openings, a carriage adapted to travel on said trackway, a door carrier in conjunction with the carriage, cooperative means between the front portion of the door carrier and the carriage compelling the front portion of the door carrier to travel in a substantially horizontal line, cooperative means between another portion of the door carrier and the carriage compelling the upper end of the door carrier to tilt rearwardly with respect to its lower end as the door carrier is initially moved away from an oven opening, and suitable devices in conjunction with the door carrier for supporting a door thereon and for compelling the doorto travel in harmony with the door carrier, substantially as described.

6. The combination with a bench of coke ovens having a plurality of door openings on one side, and a door for each opening, of a trackway extending along adjacent to the side of the bench of ovens, a carriage adapted to travel on said trackway, a door carrier in conjunction with said carriage, suitable devices in conjunction with the door carrier for supporting a door thereon and for compelling the door to travel in harmony with the door carrier, and suitable connections between the door carrier and carriage compelling the upper portion of the door carrier to tilt rearwardly with respect to the lower portion of the door carrier as the door carrier. is initially moved backwardly away from an oven opening, and for thereafter compelling the lower portion of the door, carrier to swing rearwardly with respect to the upper portion of the door carrier as the retrograde movement of the door carrier from the door opening is continued, substantially as described.

7. The combination with a bench of coke ovens having a plurality of oven openings on one side, and a door for each opening,

of a trackway extending along adjacent to the side of the bench of ovens, a carriage traveling on said.trackway, a door carrier in conjunction with said carriage, and suitable devices in conjunction with the door carrier for supporting a' door thereon and for compelling the door to travel in harmony with the door carrier, and suitable connections between the door carrier and carriage Jfor compelling the lower front edge of the door carrier to initially rise and then move rearwardly and for compelling the upper front edge of the door carrier to ini tially move rearwardly away from the oven opening as the door carrier is moved rearwardly with respect to the carriage, substantially as described.

8; The combination. with a bench of coke ovens having a plurality of oven openings on one side, and a door for each opening, of a traveling carriage adjacent to said side of the bench of ovens, a door carrier in conjunction with said carriage, and suitable devices in conjunction with the door carrier for supporting a door thereon and for compelling the door to travel in harmony with the door carrier, and suitable connections between the door carrier and carriage for compelling the lower front edge of the door carrier to initially rise and then move rearwardly and for compelling the 'up )er front edge of the door carrier to initia ly move rearwardly away from the oven' opening as the door carrier is moved rearwardly with respect to the carriage, substantially as described.

9. The combination with a bench of coke ovens having a plurality of oven openings on one side, and a door for each opening, of a carriage traveling adjacent to said side of the bench, a door carrier in conjunction with said carriage, means for moving the door carrier with respect to the carriage toward and from an oven door, suitable hooks projecting forwardly from said carrier. toward the oven door and adapted to engage the door, and yielding connections between the hooks to move rearwardly under compression with respect to the door carrier, substantially as described.

10. The combination with a bench of coke ovens having a plurality of oven openings on one side, and a door for each opening, of a carriage adapted to travel adjacent to said openings a door carrier movably mounted on said carriage and adapted to move toward and from the oven door, and yielding devices on said door carrier adapted to engage an oven door to support the same, said yield'ng devices being yieldable with respect to the door carrier under compression, substantially as described.

11. The'combination with a bench of coke ovens having a plurality of oven openings on one side, and a door for each opening, of a carriage adapted to travel adjacent to said openings, a door carrier in conjunction with said carriage and movable toward and from a coke oven door, a pair of hooks on said door carrier, and means for raising and lowering said hooks with respect to the door carrier for engagement with an oven door, said hooks being yieldlngly mounted with respect to the carrier, substantially as de-' scribed.

LOUIS A. SANFORD

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