US963960A - Ingot-stripper. - Google Patents

Description

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Patented Ju1y`12, 1910;

I N VE N TOR 6. j o? Harney o. L. TAYLOR.

INGOT SVIRIPPER. APPLICATION FILED AUG. 2, 1904. BENEWED'DEU. 15, 1908.

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G. L. TAYLOR. INGOT STRIPPER. APPLIUATION FILED AUG. 2. 1994. BBNEWBD DEO. 15, 1908.

Patented July 1,2, 1910.

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Patented July 12, 1910.

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- INGQT STRIPPER. APPLICATION IILED-AUG, 2, 1904. RENEWBD DEC. 16, 1908; 963,960. Patented Ju1y12,1910.

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CLARENCE L. TAYLOR, OF ALLIANCE, OHIO, ASSIGNOR TO THE MORGAN ENGINEERING COMPANY, OF ALLIANCE, OHIO.

INGOT-STRIPPER.

Specification of Letters Patent.

Patented July 12, 1910.

Application filed August 2, 1904, Serial No. 219,256. Renewed December 15, 1908. Serial No. 467,687.

To all whom 'it may concern:

Be it known that I, CLARENCE L. TAYLOR, of Alliance, in the county of Stark and State of Ohio, have invented certain new and useful Improvements in Ingot-Strippers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to an improvement in ingot strippers the object being to mount a pair of independently operated strippers on a single trolley, the strippers being so arranged with relation to each other and to the molds on the mold carrying truck, that they can be operated simultaneously or independently when desired, or when occasion demands.

l/Vith these ends in view my invention consists broadly in a trolley, two suspended ingot strippers and means for independently actuating the strippers.

My invention further consists in a trolley, two counter-balanced ingot strippers carried by the trolley and means for independently actuating` the strippers.

My invention further consists in a trolley, two counter-balanced strippers carried by the trolley, means for independently raising and loweringeach stripper, and independent means for actuating the stripping members of the two strippers.

My invention further" consists in the parts and combinations of parts as will be more fully explained and pointed out in the claims.

In the accompanying drawings, Figure 1 is a View in end elevation of the trolley and strippers, the stripper inclosing iframes, bridge and counterweights being shown partly in section. Fig. Q is a View in side elevation. Fig. 3 a View in plan of the trolley. Fig. 4 a view in section of the stripper inclosing frame and one of the strippers. Fig. 5 is a View in lan of the stripper inclosing frame, stripper and counterweights and Fig. G is a View in trans` Verse section on the line azz-m of Fig. 4.

1 represents a trolley of any preferred form and construction mounted to travel on the track 2 carried on a traveling or fixed bridge 3. This trolley is provided centrally l with a depending tubular frame 4 in which the strippers are mounted and by which they are guided or prevented from turning.

In the ordinary practice in steelmills, the f molds are mounted in pairs on trucks, the latter being so constructed as to hold two molds at a predetermined distance apart. These molds are then filled and after permitting the metal to solidify suiiiciently, are run under the stripper and the molds stripped one at a time. After the mold has been loosened from the ingot it is raised sufiiciently high to clear the latter', and the trolley lis then caused to move longitudinally on the bridge, and to a position to deposit the empty mold on a truck, after which it is again moved to a position over the next filled mold, and the operation repeated.

The present invention comprises a structure wherein twin or duplex strippers are so located with relation to the molds as they normally rest on their trucks, that they can engage and strip the two molds ata single operation, or within the time ordinarily required to strip a single mold. Located within the tubular trame 4 are the two strippers arranged one behind the other, in a line transverse to the travel of the trolley, so as to be in the vertical plane of the filled molds 5 mounted on the truck 6, as shown in Fig. 1.

As the strippers are alike, a description of one will be suiiicient for a clear understanding of the invention. Each stripper is composed of an elongated four sided casing or frame 7 made in two sections bolted together as shown in Figs. 1, 2 and 6. This casing or frame is open at its lower end (Fig. 4) for the passage of the ingot engaging plunger 8, and is provided on opposite sides atits lower ends with the integral ears 9 to which the mold engaging arms 10 are pivoted. The upper end of this hollow frame or casing 7 is provided with an enlarged head 11, which as shown in Fig. 5, is so shaped as to rest wholly to one side of a plane passing vertically through the center of the tubular frame or casing 4. Each head is provided on opposite sides, and at points adjacent to the vertical center of the tubular frame or casing, with projections 12 which latter rest in slots in guides 13 secured to the inner face of the tubular frame 4, and not only operate to prevent the strippers from turning, but also prevent the heads 11 from coming in contact during their vertical movements. Each head is supported by two cables 14, the latter being connected to the heads at the points 15, which latter are at the center of gravity so as to hold the strippers in upright positions. The cables pass up to drums or pulleys 16 on the trolley 1 and are secured thereto. Cables 14a are also secured to these drums and pass down to the counterweights 17 to which they are connected, a single counterweight being provided for each stripper. Each counterweight is provided with grooves to receive the guides 19 secured to the outer face of the tubular casing 4 and as shown; these guides project some distance below the lower end of the tubular casing so as to support and sustain their counterweights throughout their entire range of movement.

Located within the hollow stripper casing or frame 7 is the hollow plunger S, the lower end of which, as previously explained passes through the lower end of casing 7 and is designed to engage the ingot. The upper end of each plunger 8 is provided with the laterally projecting arms 20 which pass outwardly through slots 21 in the stripper casing 7, and. are provided at their ends with holes for the passage of the rods 22. The rods 22 are connected at their lower ends to the smaller horizontal arms 23 of the mold grasping arms 10, and pass upwardly and through the arms 20. Seated on the arms 20 and embracing the rods 22, are the washers 24 on which are seated the coiled springs 25, and resting on the tops of springs 25 are the washers 26 held in place by the nuts 27 screwed to rods 22. From the construction thus far described, it will be seen that as the plunger 8 descends its arms 20 permit the rods 22 to descend thus causing the mold grasping arms to close or move to a position to engage the ears on the mold, and when the plunger is elevated or moved away from the mold or ingot, the arms 20 of the plunger, through the intervention of the washers,

springs, and nuts before described, cause the arms to open or move toa position away from the ears on` the mold.

Secured within the plunger 8 is an elongated internally threaded nut 28, and located within the plunger and rigidly fixed to the head 11 of the casing or frame 7 is the elongated internal-ly threaded nut 29. The

hand screw 30, hence it will be apparent eeaee screws and two nuts is imparted to thev plunger, thus accelerating its motion. When however the plunger is in contact with an unyielding ingot, the movement imparted by the two nuts and the screw is all transmitted to the stripper casing thus causing the latter to move upwardly.

In the operation of the parts thus far described, the strippers would beV lowered by their cables until within the proper distance from the molds and ingots therein, and then by rotating the screw in the proper-direction, the plunger descends until it engages the top of the ingot. 1f the top of the ingot be soft, the plunger will meet with but little resistance, hencev but little upward movement will be imparted to the mold grasping arms 10. Then however the penetration of the ingot by the plunger ceases, or if the ingot be sufficiently hard to prevent any penetration, the plunger will necessarily come to a stop,while the movement due to the screw and nuts will be impar'ted to the stripper casing 7, and the mold grasping arms, thus operating to strip the mold from the ingot.

Secured to or integral with the upper end of each screw 30, and projecting up through the trolley, is an angular shaft 31. Each shaft 31 passes loosely through a sleeve 32 having a bore corresponding` in cross section to the cross section ofthe shaft 31 and carrying a pinion 32a which meshes with a pin ion 33 on shaft 34. This sha-ft 34 carries a bevel pinion 35 which meshes with bevel pinion 36 on shaft 37. This shaft 37 carries a pinion 38 which meshes with pinion 39 on the armature shaft of motor 40. There is a motor and a set of gearing for each shaft 31,

hence while they are primarily designed tov be operated in unison, they may be actuated independently when so desired.V

The gearin-gs for rotating the screws are all on the trolley, and the shafts 31 of the two strippers which as before explained are angular incross section, have sliding movements through the sleeves or pinions 32a. This sliding or vertical movement of the shafts and the strippers is accomplished by the stripper supporting cables 14 secured to drums 16. Secured to drum 16, but wound thereon in opposite directions from the stripper supporting cables 14 are the counterweight cables 14a.` The two drums or pulleys for each stripper are secured on a shaft 41 carried on the trolley and provided at one end with a large pinion 42 which meshes with a smaller pinion 43 on shaft 44. This shaft 44 carries a larger pinion 45 which meshes with a smaller pinion 46 on shaft 47 the latter also carrying a larger pinion 48 meshing with smaller pinion 49 on the armature shaft of the motor 50.

The two motors, shafts and gearing above referred to are all carried on the trolley and the motors may be actuated in unison to raise or lower both strippers, or independently.

In the operation of my apparatus, the truck containing the filled molds are run to a position within the limits of travel of the bridge and trolley, if the trolley be on a traveling bridge, or under the trolley track if the latter be on a iixed bridge, after which the strippers are lowered until the grasping arms l thereof are iii position to engage the. ears l on the molds 5. By now iinpart-ing motion to the shafts 3l, the iight and left hand screws are turned in a direction to force plungeis 8 down onto the ingots. As soon as the downward movements of the pliingers are stopped by engagement with the ingots, the screws then impart iipwai'd movements to the stripper casings and grasping arms carried by the latter, and at the saine time exert equal pressures downwardly on the ingots. The pull on the molds and the pressure against the ingots operates to strip the molds from the ingots, and as soon as the molds have been free or loosened, the motions of the screws are stopped and the strippers and attached molds are quickly lifted until the molds are clear of the ingots, after which the trolley is moved on its track to a position to deposit the empty molds on a truck located to receive them.

It is evident that many slight changes might be made in the relative arrangement of parts herein described without departing from the spirit and scope of my invention hence I would have it understood that I do not wish to confine myself to the exact construct-ion shown and described, but,

Having fully described my invention what I claim as new and desire to secure by Let-- ters-Patent, is

l. The combination with a trolley, two ingot strippers, flexible suspension means for each stripper, a counterweight for each stripper, and flexible suspension means for each counterweight, of drums on the trolley engaged by the strippers and counterweights suspending means, a motor and gearing for actuating each drum, a motor and gearing for actuating the movable parts of each stripper, and a depending frame forming a guiding support for both strippers and both counterweights.

2. The combination with a trolley and a tubular frame depending therefrom, the latter having internal and external guides, of a pair of strippers movable within said frame and engaging the internal guides, iiexible suspension means for each stripper, counterweights engaging the external guides, flexible suspension means for each counterweight, drums on the trolley engaged by the strippers and counterweights suspending means, motors and gearing on the trolley for actuating said drums, and motors and gearing for actuating the movable parts of the stripper.

3. The combination with a trolley, a motor and gearing thereon for propelling the trolley, two hoist drums, a motor and gearing for each, an ingot stripper flexibly suspended from each drinn, a motor and gearing for actuating the stripping mechanism of each stripper, and a depending frame for guiding and supporting both strippers.

In testimony whereof, I have signed this specication in the presence of two subscribing witnesses.

CLARENCE L. TAYLOR.

Witnesses:

A. L. ROBERTS, N. C. FETTERS.

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