US800712A - Ingot-stripper. - Google Patents

Description

PATENTED OCT. 3, 1905.

J. I. BLGUNT.

NTTED STATES PATENT OTETCE.

JOHN I. BLOUN'I, OE DONORA, PENNSYLVANIA, ASSIGNOR TO VHI'IING FOUNDRY EQUIPME\lT OO., OF HARVEY, ILLINOIS, A CORPORATION OF ILLINOIS.

lNGaOT-STFHPPEF?.

Specification of Letters Patent.

Patented Oct. 3, 1905.

Application leil February 27,1904. Serial No. 195,571.

To (all 1,1;71/0777/ ift 72mg/ concern:

Be it known that I, JOHN I. BLOUNT, a citizen of the United States, residing' at Donora, in the county of lVashing'ton, and in the State of Pennsylvania, have invented a new and useful Ingot-Stripper, of which the following is a specification.

My invention relates to ingot-strippers or devices adapted to strip a cast ingot of iron or steel out of the mold in which it is cast, and particularly to devices of this class operated by hydraulic power.

The object of my invention is to provide a mechanism which shall be neat, compact, and self-contained in form, in which the operation of stripping the ing'ot from the Jmold operates to automatically lock the mold in the device, the whole being' performed by the shifting in position of a constant quantity of pressureexerting' fluid without any additions from ex ternal sources.

` It consists in such a mechanism which can be easily and cheaply constructed, is efficient in operation, compact, neat in form, and not readily liable to get out of order, and particularly in the use of auxiliary plungers connected with the main stripping-cylinder adapted under the pressure of the fluid in the cylinder to lock the gripping devices upon the mold.

It further consists in details of construction, which will be hereinafter more fully described and claimed as the specification proceeds.

Figure 1 is a detail sectional front elevation of mechanism illustrating' my invention in its preferred form. Fig'. 2 is a side View of the same.

Again referring' to the drawings, numeral indicates the walls of an ordinary cylinder made of any suitable metal, having' within it a cylindrical chamber 11. Slidably mounted in this cylindrical chamber 11 is a piston 12, mounted upon a piston-rod 13, adapted to move up and' down through stufling-box packing 14, which closes the end of the cylinder in the ordinary manner. On the upper end of this piston-rod 13 is a loop or hook 17, adapted to be eng'ag'ed by the main lifting-hook of a traveling' crane. Entering the upper end of the cylindrical chamber 11 is a port or passage 19, which extends, as shown, within the body of the cylinder 10 down to the lower end of the cylinder, wherein the absence of other parts it would open at into the outer air. It will readily be seen that if the source of water-pressure be attached to the opening 20 water will pass through the passage 19 into the chamber 11 and force the piston 12 down-- ward in the cylinder, and that if an upward pull be exerted upon the loop 17 and the piston 12 moved upward in the cylinder the fluid 1n the chamber 11 will be forced out through the passage 19 and orifice 20. Mounted upbn the lower end of this cylinder, in the particular 'form here shown as an inclosing cylinder 22, 1s an external piston-head 23, of larger diameter than the piston 12, heretofore described and upon the lower end of this external pis ton 23 is a ram 25, adapted to pass through the opening' in the top of the ingot-mold 26 and engage the ingot 27, thereby stripping it downward through the mold if'the mold 26 is heldin stationary position. Theinclosing cvlinder 22 has a water-tight slidable connection with the outside of the cylinder 10 and is rendered still more tight bythe packing-ring30. As the area of the piston 12 is much smaller than the external piston-head 23, it will readily be seen that under the well-known physical principles relating to the. transmission of power a long movement of the small piston 12 in the cylinder 1() will cause a great pressure upon the inside of the second or exterior piston 23 and move it only a short distance with such g'reat power, whereby a small pressure exerted upon the hook 17 will be transmitted into a large pressure at the ram 25 for the purpose of starting the ingot within its mold.

In order to grip the ingot-mold 26 in my mechanism for the purpose of stripping and also for lifting it off the ingot, I provide novel mechanism, which will now be described.

Pivoted upon opposite sides of the mold 10 at 32 upon plates 33, extending from the sides of the cylinder, are levers composed of short arms 35, extending' upward, and long arms 36, extending downward. In the lower ends of these arms 36 are loops 37, adapted to t over lugs 39 upon the side of the ingot, from which it will be seen that when these loops 37 are over the lugs 39 the ingot-mold will be held in position below the cylinder for first, the stripping of the ingot, and, second, the lifting and carrying the mold. In ordei to hold these lever-arms 36 in position in contact with the ingot-mold, I insert in the up.

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per cnd of the cylinder 10 at approximately right angles to the piston-rod 13 and directly opposite the short arms 35 of the locking-levers auxiliary pistons or plungers 40, adapted to slide backward and forward through the stuffing-boxes 42 in the sides of the cylinder 10. The inner end of the left-hand plunger is connected by a port or passage 44 with the inside of the cylinder, while the inner end of the right-hand plunger 4() enters the passage 19, heretofore described, from which it will be seen that whenever pressure is exerted in the upper end of the cylindrical chamber 10, and consequently in the passage 19, these auxiliary plungers 40 will be moved outward against the short lever-arms 35, and that consequently the long leverarms 36 will be moved inward toward the ingot-mold, thereby locking the long arms 36 upon the mold. VIt will further be seen that this locking el'l'ect will continue just as long as such internal pressure exists in ,the upper portion of cylindrical chamber 11. In order to move the lever-arms 36 in the opposite direction, I pivot at 47 upon the plates 33, heretofore referred to, short levers 48, having at their lower ends rollers 50 engaging the insides of the leverarms 36. These levers 48 are normally Vforced outward by coiled springs 52, engaging both the levers 48 and the cylinder 10, so that when there is no pressure exerted within the cylindrical chamber 11, as heretofore described, to move the levers 36 inward toward the ingot-mold the springs 52 will move them outward away from the mold and hold them there or in the position shown in Fig. 1.

The inclosing cylinder 22 is rigidly secured to rods 54, which are adapted to slide up and down in the guides 55, extending from the side of cylinder 10.

ln the operation of my device the cylindrical chamber 11 is filled with oil, water, or some other suitable material and the various stufiing-box packing devices closed, as shown. The mechanism is now self-contained and has no Valves or pipe connection with any source of huid-supply. rlhe device is now hung upon one set of hooks of a crane by means of the rods 54 and transported to the place where it is desired to be operated, the springs 52 holding the levers 36 outward in the manner heretofore described and the weight of the cylinder 10 and piston-rod 13 causingall the parts to assume the position of Fig. 1. The crane carrying the device by the rods 54 is lowered until the loops 37 are below lugs 39 of the ingot to be stripped. The operator new sets in motion the central hook of the crane, which is attached to the loop 17, releasing entirely, if desired, the strain on hooks 54. This operation moves the piston 12 upward in the chamber 11, thereby exerting internal pressure in the chamber 11 and the passages 44 and 19, thereby forces the plungers 40 outward against the short levers 35 and moving the longlevers 3G inward upon the lugs 39 of the ingot-mold, where they remain during the stripping operation. A further pulling upon the hook at loop 17 moves the piston 12 farther upward in the chamber 11, thereby, in the manner heretofore described, moving the second piston 23 downward with reference to the ingetmold 2G and stripping the ingot from the mold. The crane continues to liften the loop 17, thereby lifting the mold ofl" the ingot. This mold is now carried to a desired point and set down by the crane in the usual manner. As soon as this occu rs the operator begins to lift upon the rods 54, thereby releasingl the pressure inside the cylinder, and when this pressure is su liiciently released the springs 52 cause the long lever-arms 36 to move outward to position of Fig. 1 and the ingot-rnold is released. As the mechanism is air-tight and there is only a given amount of fluid within the device, a further lifting' on the loops 54 causes an upward pressure in the pipe 19, which in turn moves the piston 12 downward in cylinder 1() and the parts to all return to the position shown in Fig. 1.

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

1. ln mechanism of the class described, the combination of a cylinder, a piston adapted to be moved backward and forward with reference to said cylinder, and a larger piston also adapted to be moved backward and forward with reference to said cylinder, the two pistons communicating power from one to the other through a constant-quantity body of liquid, within the cylinder.

2. In mechanism of the class described, the combination of a large piston, a small piston and a cylinder with reference to which both pistons are adapted to be moved backward and forward, there being recesses and passageways, so located within the cylinder that a construit-quantity body of liquid within the cylinder bears simultaneously on the same side of each piston with reference to one end of the cylinder.

3. 1n mechanism of the class described the combination of a large piston, a small piston and a cylinder with reference to which both pistons are adapted to be moved backward and forward, there being recesses and passages, so located within the cylinder that a constant-quantity body of liquid within the cylinder bears simultaneously on one side of each piston.

4. 1n mechanism of the class described the combination of a large piston, a small piston, a cylinder with reference to which both pistons are adapted to be moved backward and forward, there being recesses or passages so located within the cylinder that a constantquantity body of liquid within the cylinder bears simultaneously on one side of each piston, a lever pivotally mounted adjacent to the IOC TOE

outside ot the cylinder and a supplemental plunger or piston mounted in the cylinder' adapted to be moved by said fluid within the cylinder to operate said lever.

5. In mechanism otl the class described, the combination ol'l a large piston, a small piston, a cylinder with reference to which both pistons are adapted to be moved backward and .t'orward, there being recesses or passages so located within the cylinder that a constantquantity body ot' liquid within the cylinder bears siimiltaneously on one side ot' each piston, a lever pivotall y mounted adjacent to the outside ot' the cylinder, asupplemental plunger or piston mounted in the cylinder adapted to be moved by the fluid within the cylinder to operate said lever, and spring mechanism adapted to tend to move said lever in the opposite direction.

6. AIn mechanism of the class described the combination ot'. a cylinder, a small piston mounted on a piston-rod adapted to move backward and forward within said cylinder, a larger piston having' a portion inclosing the opposite end of said cylinder adapted to be moved backward and forward with reference to said cylinder, there being ports and passage-ways in said cylinder whereby a constant quantity ot'v liquid within the cylinder and said ports and passag'e-ways is adapted to simultaneously bear upon the upper surface of each of said pistons.

7. In mechanism of the class described the combination ot' a cylinder, a piston mounted upon its piston-rod adapted to be moved backward and forward within said cylinder, a lever pivoted adjacent to said cylinder and a supplemental piston or plunger mounted in said cylinder having its outer end adapted to bear upon said lever and having its inner end in communication with the luid within said cylinder, whereby moving' said lirst piston in a direction to compress said liquid within the cylinder forces the supplemental plunger outward to operate said lever.

8. ln mechanism of the class described th combination of a cylinder, a piston mounted upon its piston-rod adapted to be moved backward and forward-within said cylinder, a lever pivoted adjacent to said cylinder and a supplemental piston or plunger mounted in said cylinder at approximately right angles to the main piston-rod adapted vto bear eX- tcrnally upon said lever and having' its inner end in communication with iluid within the cylinder whereby moving' said tirst piston in a direction to compress said liquid within the cylinder forces the supplemental plung'er outward to operate said lever.

9. In mechanism of the class described the combination of a main cylinder closed at its lower end, a piston adapted to move up and down within said cylinder, a piston-rod on said piston extending outside ol" said cylinder through suitable packing devices in the upper end of the cylinder adapted to be grasped by one hook of a traveling crane, a supplemental second piston mounted below the main cylinder having' a portion making' fluid-tight slidable connection with the outside of said cylinder, adapted to engage an ingot, a port or passage-way connecting the upper end of the inside of said cylinder above said [irst piston with the upper end ot' said second piston whereby a constant quantity ot' tluid in said port or passage-way bears simultaneously upon the upper side of each ot' said pistons, levers pivotally mounted adjacent to the outside of said cylinder having' their lower ends Y adapted to grasp an ingot-mold and supplemental pistons or plungers bearing on the upper ends, said levers and their other ends entering' said cylinder and in communication with the fluid within the cylinder, whereby pressure of said fluid within the cylinder moves the supplemental plung'ers outward to operate the ingot-mold-gripping levers.

10. In mechanism ot' the class described, the combination of a main cylinder closed at its lower end, a piston adapted to move up and down within said cylinder, a piston-rod on said piston extending outside ot' said cylinder through suitable packing devices in the upper end ot' the cylinder adapted to be grasped by one hook of a traveling crane, a supplemental second piston mounted below the main cylinder having a portion making {luid-tight slidable connection with the outside of said cylinder, adapted to engag'e an ingot, a port or passage-way connecting the upper end of the inside of said cylinder above said lirst piston with the upper end ot' said second piston whereby a constant quantity of fluid in said port or passage-way bears simultaneously upon the upper side ot' each of said pistons, levers pivotally mounted adjacent to the outside of said cylinder having their lower ends adapted to grasp an ingot-mold and supplemental pistons or plungers bearing on the upper ends, said levers and their other ends entering said cylinder and in communication with the fluid within the cylinder, whereby pressure of said fluid within the cylinder moves the supplemental plungers outward to operate the ingot-mold-gripping levers and means for moving said gripping-levers in the opposite direction.

JOHN I. BLOUNT.

vWitnesses:

GER'rRUDE M. LIrrINooTT, It. I). LIrrINoo'rT.

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