US2434632A - Cooling bed - Google Patents

Description

Jan. 13, 1948. R. w. YOUNG 2,434,632

COOLING BED v Filed May 3, 1944 2 Sheets-Sheet l 'Lumumba Z6 Z6 42 6,5 66 67 66a L j 4,

1 53 612 46 Q Vm I 46 Z J4 40 44 45 6/ @06 65 A 6)2 46 43 l f 42 l 46 26 67 6 67 FL?.

*5 z 62 46 4 l Q 3" 42.

56 J7 66 656 FL?. 4

J3 62 46 l 9 l mLl S 49 d 6 46 66 65275@ E www RICHARD W YOUNG Jan. 13, 1948. R. w. YOUNG 2,434,632

n COOLING BED Filed May 5, 1944 2 Sheets-Sheet 2 42 N A 44 JW Si!! 1,-/ I 63 @il Suma/who@ y RzcHAR W YoU/vc Patented Jan. 13, 1948 Richard W. Young,

Morgan Construction Company,`

Worcester, Mass., assigner to Worcester;

Mass., a:r corporation of Massachusetts Appiication 'May 3, 1944, serial No. 533,823

5 Claims.

This invention relates to cooling beds forthe reception of hot rolled metal` bars, and more particularly to the construction and arrangement of mechanism whereby the bars may be moved Ain a broadside direction across the bed.`

One form of cooling bedincommon usecomprises a series of spaced parallel substantially horizontal skids forming a support for the bars,V

which extend at right angles with the skids. These bars maybe in the form of billets, slabs,

I-beams, channels. and various.. other rolled' shapes. They are usually conveyedto the. cooling. bed by a'roller tabley andthen transferred Certain difficulties have beenl encountered inV the operation of theseV go-devils asheretofore constructed. The dog has usuallybeenfpivotally mounted and counterweightedA or lotherwise biased toward its raised position.. Consequently during the rearwardV travel of thev go-devil.- beneath the bars, the dog is depressed byl its engagement withithe bottom surfaces of thefbars. ThisY is undesirable, particularly inv-the: caseoi various alloys; since it causes scratching of the bars. It is-irequently necessary to move. aV group of bars along the* cooling. bed and then. to. separate 'this groupv into smallerY groups or towithdraw the foremost bar from the groupfandperhapsto dischargesthis bar from the skids. This mode of operation requirestsome selectively operable meansy for holdingv the go-devil dog inra depressed positionwhile it travels forwardlybeneath the bars. Such means has been known heretofore, `but it has been necessary tomove the go-devil through its entireiorward stroke inorder to f release the dog, and .then move thezgo-devil rearwardly'until4 the dogis inpositionfto engage theY particular barwhich has been selected. This involves a great waste ci time, sincethe-go-devil must be moved through.averyconsiderableA distanceA merely for the: purpose oivreleasing the dog.

It is accordinglyl one'objectof.- the invention to providea cooling bedhaving a.reciprocable go-devil, the go-devil having .a -dogthereon` for pushingl engagement 'with` the bars onv the cooling bed,.and the parts being so constructedr and arranged that thevdogiawill4 be withdrawn from 55 contact with the bars during the rearward'travel of the go-devil.

It is a further object of the invention to provide a cooling bed go-devil having a bar-pushing dog thereon which will bel held positively in a depressed position during its rearward travel and positively in a raised position duringV its forward travel.

It is a further object of the invention to pro-y vide a cooling bed go-devil having av bar-pushing dog thereon which can be locked in a depressed position during its forward travel and releasedl at any desired pointjin such forward travel to engage a selected bar.

With these and other objects in view, as will be apparent to those skilled in the art, the invention' resides inthe combination of parts set forth in the specication and covered by the claims appended hereto.

Referring to the drawings illustrating one ernbodiment oi the invention and in which like reference numerals indicate like parts,

Fig. 1 is a plan View of a go-devil, shown in partial section on the line I-l of Fig. 2;

Fig. 2 is a longitudinal section taken on the line 2"-2 of Fig. 1, showing the positions normally assumed by the various parts during forward travel of the go-devil, the bar-pushing dog being raised;

Fig. 3 is a view similar to Fig. 2, but showing the positions assumed by the various parts during rearward travel of the go-devil; l

Fig. 4 is a view similar to Fig. 3, but illustrating the. effect of a locking cam as the go-devil approaches its` rearward travelrlimit;

Fig.Y 5 is a view similar to` Fig. 2; buty showing the positions assumed by the various parts during forward 4travel oi the go-devil with the barpushing dog lockedl in a depressed position;

Fig. 6k is a view of the frameof the go-devil, taken in section on the line 6,-6 of Fig. 7;

Fig. l isa sectiononthe line 1-1` of'Fig. 6;

Fig. 8 is a perspective yview of a locking pawl;

Fig. 9 is a perspective vierwrof a supporting link;

Fig. 10 is a perspective view of a connecting link;

Fig` l1 is a perspective view of a supportingV and .driving link;

Fig. 12'is a rperspective view'oi a bell crank lever; Y v

Fig. 13 isa perspective view of a bar-pushing dog; v

Fig. 14 is a side elevation of 'a cooling bed;

Fig. 15 is a plan view of the cooling'bed; and

Fig. 16 is a front end view of the go-devil and the adjacent skids.

As shown in Figs. 14 to 16, the cooling bed illustrated comprises a series of spaced para'lel horizontal skids 20 which are supported by I-beams 2| therebeneath. Two go-devils 22 are provided at opposite sides of the cooling bed to move the rolled metal bars B broadside along the skids. Each go-devil is located between two adjacent skids, and it is slidably supported by a pair of angle members 24 carried by brackets 25 on the adjacent I-beams 2|. These angle members provide a track along which the go-devil may be re-' bed. The rope 26 then extends rearwardly, makes several turns around a drum 29, and continues rearwardly to an idler sheave 30 at the rear or receiving end of the cooling bed. The rope passes upwardly around the sheave 30 and then forwardly to the go-devil. The two drums 29 are secured to a common shaft 32 which is driven by a reversible electric motor 33 through suitable gearing 34. Each of the rear sheaves 30 is mounted on the upper end of an upright arm 36 which is pivoted at its lower end and urged rearwardly by a tension spring 31. This construction holds the ropes sulciently taut and takes up any stretch in the ropes. By means of suitable and well known controls, the operator can cause the motor 33 to rotate the shaft 32 in either direction, so that the go-devils may be moved either forwardly or rearwardly and stopped in any desired position. A roller table 38 is provided at the front end of the cooling bed to receive the bars as they are pushed from the skids.

Referring now to Figs. 1 to 7, it will be seen that each go-devil 22 comprises an elongated hollow frame 40 shaped substantially as an inverted U in cross section and provided with laterally projecting wing portions 4| for engagement with the guide rails 24. The upper surface of this frame is positioned slightly below the upper surfaces of the cooling bed skids 20, and at the front end of the frame there is provided a dog 42 which can be projected upwardly above the skids to serve as a bar pushing device or withdrawn downwardly below the upper surfaces of the skids to avoid engagement with the bars B.

The various parts are so constructed and arranged that the dog 42 will be withdrawn or retracted during rearward travel of the go-devil and projected upwardly during forward travel of the go-devil. For this purpose the dog 42 is pivotally mounted between the front ends of two arms 43 which extend forwardly from a bell crank lever 44 fulcrumed on a transverse pin 45 in the front portion of the frame 4|). The lever 44 is formed with two downwardly extending arms 46. The dog 42 is provided with a counterweight in the form of a rearwardly extending tail-piece 46.

The frame 40 carries a transverse pin 49 beneath l this tail-piece to engage and support the same when the dog is retracted as shown in Figs. 3, 4 or 5. When the dog is raised, as shown in Fig. 2 it will engage the front edge of the upper wall of the frame 40 and thus be firmly braced to push against the bars. A bifurcated lever 5| is fulcrumed at its upper end on a transverse pin 52 within the rear portion of the frame 40, and a similar bifurcated lever 53 is fulcrumed at its upper endon a transverse pin 54 within the frame 40 in front of the lever 5|. .The lower ends of the levers 5| and 53 are connected by a horizonf tal link 56 which is bifurcated at its opposite ends. The rear end of this link is connected to the lever 5I by a pin 51, and the front end of the link is connected to the lever 53 by a pin 58. The ends of the rope 26 are attached to the central portions of the pins 51 and 58, and the arrangement is such that by moving the rope forwardly or rearwardly a corresponding movement will be .imparted to the link 56. In order to limit this lost motion of the link 56 with relation to the frame 40, the interior of the frame is formed with a pair of opposed upright ribs 60 at the rear of the lever 53 and with a pair of opposed ribs 6| in front of the lever 53. These ribs provide abutments against which the lower end of the lever 53 will strike as it swings forwardly or rearwardly. This swinging motion of the lever is utilized to actuate the dog 42, and for this purpose a substantially horizontal link 62 is provided to connect the lever 53 with the downwardly extending arms 46 of the bell crank lever 44.

With the construction as so far described, when the rope 26 moves forwardly the lever 53 will swing forwardly to engage the ribs 6| and thus raise the dog 42, as shown in Fig. 2. Hence as the go-devil travels forwardly, the dog 42 may push a bar ahead of it along the skids 20. When the motor 33 is reversed and the rope 26 moves rearwardly, the lever 53 will swing rearwardly to engage the ribs 65 and thus lower the dog 42, as shown in Fig. 3. Consequently during rearward travel of the go-devil the dog will be withdrawn downwardly so that it cannot rub against and scratch the rolled bars on the skids.

At certain times it may be important to move the go-devl forwardly beneath some of the bars without disturbing these bars. This is accomplished by providing a selectively operable locking device capable of holding the dog 42 in a retracted position during forward movement of the go-devil. For this purpose two pawls 65 are pivotally secured to opposite sides of the link 56 by means of a transverse pin 66, so that they may normally hang downwardly by their own weight, as shown in Figs. 2 and 3. The rear surface of each rib 60 is formed with a shallow notch 61 so positioned that when the pawls are swung forwardly and upwardly their pointed front ends may enter the notches. A stationary cam 69 (Figs. 4 and 14) is mounted at the rear of the cooling bed in front of each rear idler sheave 30 and in the path of the pawls 65. When the godevil is moved rearwardly far enough to bring the pawls into engagement with this cam 69, as shown in Fig. 4, the pawls will be swung upwardly to bring their front ends close to the notches 61. Then as the rope 26 is moved forwardly, these front ends of the pawls will engage the notches after only a slight forward movement of the 1evers 5| and 53 relative to the frame 46 and thus hold the dog 42 in a retracted position as shown in Fig. 5. While the dog will be raised slightly above the position assumed during rearward travel, it will still be below the tops of the skids 20. The pawls 65 will remain in engagement with the notches 61 even after they have left the cam 69, so long as there is a forward pull on the rope 26, but even a momentary reversal of the pull will serve to release the pawls and permit them to drop out of the notches. Consequently when the rope is again moved forwardly the dog 42 will be raised to the position shown in Fig. 2.

The operation of the invention will now be apparent from the above disclosure. The bars B will be deposited on the skids by,y theV usual.

ward position relative to the/frames d0, andthe` dogs 42- will be depressed, as shown in Fig. 3, soY

they may pass beneath the bars B without touching the same. When the go-devils reach a desired position, the operator will stop the motorV 33 and start it in a forward direction. lThe ropes 2t will thereupon carry the links 56 forwardly relative to the frames 4G and elevate thedogsgllZ, as shown in Fig. 2. Thus as the go-devils move forwardly, the dogs 42 will engage a bar and push it broadside ahead of them. At times a large group of bars may be pushed forwardly at the same time, and the operator may then wish to separate one or more bars from the front of this group. To accomplish this he will first move the go-devils rearwardly to bring the pawls 65 into contact with the cams 5S, raising these pawls, as shown in Fig. 4. Then as the go-devils are again moved forwardly the pawls 5 will engage the notches 6l, as shown in Fig. 5. This will prevent forward movement of the links 56 relative to the frames dil, and the dogs 42 will remain below the tops of the skids Z and can accordingly travel forwardly beneath the bars. When the go-devils reach a desired position the operator will stop the motor 33 and momentarily reverse or jog the same. This will release the pawls S5 and they will drop away from the notches El. Consequent ly upon resumption of forward travel of the godevils, the dogs i2 will be elevated above the skids and into pushing engagement with a selected bar.

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

1. A cooling bed comprising a series of skids for the reception of hot metal bars, an elongated go-devil frame movable longitudinally forwardly and rearwardly adjacent said skids, a dog mounted on the forward end of the frame, a link pivotally connected at its upper end to the frame and arranged to swing in a generally forward and rearward direction through a limited lost motion relative to the frame, actuating means movable forwardly and rearwardly beneath the frame and connected to the lower end of the link, and connecting means extending forwardly from the link to the dog arranged to lower the dog below the tops of the skids when the link swings rearwardly and to raise the dog above the tops of the skids when the link swings forwardly to push a bar broadside along the skids.

2. A cooling bed comprising a series of skids for the reception of hot metal bars, a go-devil frame movable forwardly and rearwardly adjacent said skids, a dog mounted on the frame, actuating means movable forwardly and rearwardly adjacent the frame, means providing a lost motion connection between the actuating means and the frame, means providing a positive connection between the actuating means and the dog to lower the dog below the tops of the skids when the lost motion is taken up during rearward travel and to raise the dog above the tops of the skids when the lost motion is taken up during forward travel to push a bar broadside along the skids, a movable device associated with the lost motion connection and adapted to prevent the 3.- A coolingbed comprising a series of skids' for the receptionbf hot metal bars, a go-devil frame movable forwardly and rearwardly adjacent said skids, a dog mounted on the frame, actuating4 means movablel forwardly and rearwardlyadjacent the frame, means providing a lost motion f connection `between the actuating. meansV and the frame,.means providing positive connection between the actuating means and the dog .to lower the dog below` the vtops of the skids when the lost motion is taken up during rearward travel and to raise the dog above the tops of the skids when the lost motion is taken up during forward travel to push a bar broadside along the skids, a device associated with the lost motion connection and movable between an inoperative position and an operative position, the device being arranged when in its operative position to prevent taking up of the lost motion during forward travel of the go-devil and thereby to maintain the dog below the tops of the skids, the device being biased toward its inoperative position, and means to move the device into operative position in opposition to its bias automatically upon movement of the godevil rearwardly beyond a predetermined position, the lost motion connection being arranged to retain the device in its operative position during the ensuing forward travel of the go-devil and to release the device upon momentary reversal of the actuating means.

4. A cooling bed comprising a series of skids for the reception of hot metal bars, a go-devil frame movable forwardly and rearwardly adjacent said skids, a dog mounted on the frame, actuating means movable forwardly and rearwardly adjacent the frame, means providing a lost motion connection between the actuating means and the frame, means providing a, positive connection between the actuating means and the dog to lower the dog below the tops of the skids when the lost motion is taken up during rearward travel and to raise the dog above the tops of the skids when the lost motion is taken up during forward travel to push a bar broadside along the skids, a pivotally supported pawl associated with the lost motion connection and movable between an inoperative position and an operative position, the pawl being arranged when in itsoperative position to prevent taking up of the lost motion during forward travel of the go-devil and thereby to maintain the dog below the tops of the skids, the pawl being biased by gravity toward its inoperative position, and a stationary cam located in the path of the pawl as the go-devil moves rearwardly beyond a predetermined position and arranged to swing the pawl into its operative po sition, the lost motion connection being arranged to retain the pawl in its operative position during the ensuing forward travel of the go-devil and to release the pawl upon momentary reversal of the actuating means.

5. A cooling bed comprising a series of skids for the reception of hot metal bars, a go-devil frame movable forwardly and rearwardly adjacent said skids, a dog mounted on the frame, actuating means movable forwardly and rearwardly adjacent the frame with a limited amount of lost motion between the actuating means and the frame, means providing a positive connection 7 between the actuating means and the dog to lower the dog below the tops of the skids when the lost motion is taken up during rearward travel and to raise the dog above the tops of the skids when the lost motion is taken up during forward travel to push a bar broadside along the skids, a pawl mounted on the actuating means and normally depending therefrom by gravity, a stationary cam located in the path of the pawl as the go-devil moves rearwardly beyond a predetermined position and arranged to raise the pawl, and means on the frame providing an abutment in position to be engaged by the raised pawl to prevent taking up of the lost motion during for Ward travel of the go-devil and thereby to maintain the dog below the top of the skids, the abutment being shaped to retain the pawl in its raised position as the forward travel continues and to release the pawl upon momentary reversal of the actuating means.

RICHARD W. YOUNG.

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

UNITED STATES PATENTS

Images