US439829A

US439829A - E ptorrls peters co

Info

Publication number: US439829A
Authority: US
Publication date: 1890-11-04
Anticipated expiration: 1907-11-04

Description

(No Model.) 2 Sheets-Shet H. AIKEN. MILL APPLIANCE.

Patented Nov. 4, 1.890.

WITNESSES 0%. in W mvsm on U ITED STATES PATENT OFFICE.

HENRY AIKEN, 0F PITTSBURG, PENNSYLVANIA.

MILL APPLIANCE.

SPECIFICATION forming part of Letters Patent No. 439,829, dated November 4, 1890.

Application filed May 8, 1890. Serial No. 3511000. (No model.)

To all whom it may concern.-

Be it known that 'I, HENRY AIKEN, of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Mill Appliances, of which the following is afull, clear, and exact description, reference beinghad to the accompanying drawings, forming part of this specification, in which- Figure 1 is afront elevation of my improvement, partlyin section. Fig. 2 is a horizontal section on the line II II of Fig. 1. Fig. 3 is a vertical longitudinal section of the device on the line III III of Fig. 1. Fig. 4 isa side elevation, partly in section, of the lower part of the apparatus, showing the parts in a dilferent position.

Like symbols of reference indicate like parts in each.

My invention relates to an improvement in mill appliances. Many of its parts and elements are of general application in mill machinery, and as such I intend to claim them, but the invention relates, principally, to an improvement on the apparatus for extracting ingots from their molds for which I have already filed a patent application, Serial No. 336,401. The ingot-extractor described and claimed in said application comprises a stop or resistance device which is applied to the ingot when the mold containing it is in an uprightposition,and lifting mechanism which is applied to the mold to draw or strip it from the ingot. The advantages of such apparatus are fully stated in the specification of said application. It dispenses with much labor heretofore necessarily employed in extracting ingots, saves wear-on the mold, and the mechanism required is much less costly than in apparatus of the sort heretofore used for the same purpose.

In the drawings, 2 represents a jib or elevated track composed of parallel beams, adapted to accommodate a trolley 3, which is mounted thereon, and which is adapted to be moved back and forth by a hydraulic rack- -ing-cylinder 4.. On this trolley are two vertical cylinders 5, which are set side by side in sockets 3' on the trolley, on which they are suspended by flanges 5' on the cylinders. Each of the cylinders is provided with a piston 6 and ram 7, and encircling the latter is a piston 8, having a hollow projecting ram 9. Each ram 9 is provided with a yoke 10, which fits around a shoulder or recessb on the ram, and has an arm 11 in sliding engagement with a vertical guide-rod 12, depending from the 'truck 3, which rod guides the rams in their vertical motion and prevents them from turning. 4 The yoke 10 is made in two parts bolted together around the ram, as shown in the drawings, and is provided with depending links 13, adapted to engage lugs 24 on the ingot-mold for the purpose of lifting the latter. The cylinders are also provided with arms 11, which are in sliding contact with the guide-rod. Each of the rams 7 has an encircling collar 15, connected by toggle-arms 16 to the links 13, and at its lower end is provided with a shoe 17, which is preferably made in sections connected by a ring 17', and is therefore removable, so that if burned by contact with the hot ingots it may be replaced.

The following is a description of the waterconnections of each of the cylinders 5. A jointed or flexible pipe 18 leads to the cylinder above the piston 6. A similar pipe 19 enters the same below the piston S, and for the purpose of supplying water to the under side of the piston 6, I employ a jointed pipe 20, which enters a tube 21 at the end of the cyl inder, into which tube projects a pipe 22, which is fixed to the piston, so as to communicate with a passage leading through the same, and extends through a stuffing-box into the tube 21, thereby maintaining a constant communication between the tube and the under side of the piston inevery position of the piston in the cylinder.

The reason for the duplication of the parts of the apparatus is that it may be adapted to extract simultaneously two ingots from their molds, and it should be understood that it is within the scope of my invention to employ an apparatus having but one cylinder 5 and adapted to extract but one ingot at a time.

I shall first describe the operation of one of the cylinders in extracting an ingot, and shall then explain the mode of conjoint use of both cylinders.

A car 23, carrying an ingot in its mold 25, is brought beneath the track 2, and if necessary the trolley 3 is moved, so that the ram 7 shall be directly above the ingot, the rams 7 and 9 being first elevated to permit the mold to be carried into such position. This lifting of the rams 7 and 9 is effected by admitting water to the cylinder through the pipes 22 and 19. The water entering the pipe 22 acts on the under side of the piston 6, so as to lift the ram 7 independently of the ram 9 and to draw the shoe 17 up against the collar 15 and the latter against the yoke 10, and then exerts equal opposite pressures on the pistons 6 and 8, while the water from the pipe 19, acting on the outer side of the piston 8, raises the ram 9 and the ram 7, which by reason of the Water column between the pistons 6 and 8 are practically connected. It should be noted that when the ram 7 is lifted independently of the mold-lifting'ram 9, as before stated, the engagement of the shoe 17 with the collar 15 lifts the latter and spreads thelinks into the position shown in Fig. 4. The mold having been brought into place, the ram 9 is lowered by. exhausting the water from the pipe 19, thus bringing the links opposite to lugs 24 on the sides of the mold, and the ram 7 is. then thus causing the shoe17 to descend on theingot, as shown in Fig. 3, and the gravity of the collar 15, causing it to drop, draws the links together. against the sides of the mold, so as tofit under. the lugsin the manner illustrated in Big. 3. The connection of the links by toggle'l-leverswith the collar serves to equalize the motion of the links and to cause them to.

close symmetrically upon the 1nold,the opera tion of engaging the links being entirely pipe 18. is now closed, so as to confine a body of water. above the piston 6 and to prevent i tfro'm, rising, and the valve admitting water through the pipe19 is opened, thereby causing the entrance of water into the cylinder theram 9, yoke 10, and links 13, which'exert on the mold, a lifting action, and as the ingot is prevented by the ram 7 from rising the mold isstripped from it, leaving it standing on thecar. If the water-pressure exerted on the. outer face of thepiston 8 should be insufficient to raise it and to strip the mold from the ingot, an increment of pressure may be supplied by admitting water through the pipelS into the cylinder, which, exertingan upward pressure on the cylinder, tends to lift it slowly in its, socket 3, and thus, by reason of the bearing of the piston 8 on the lower end of the cylinder, it exerts an additional lifting force on the mold. As soon as the. frictional resistance of the mold onthe ingot, is thus overcome, the piston 8 will begin to rise, and the water-supply through the pipe 18 may be cut off. The cylinder is guided and prevented from turning by reason of the engagement of its arm 11 with the guide-rod12. When the mold is freed from the ingot, theexhaust-valve of the pipe 18 is opened, and as the ram 8 continues to ascend it engages the piston 6 and lifts the ram 7 deposit the mold on such car.

from the ingot. \Vhen the mold has been lifted quite clear of the ingot, the trolley 3 maybe moved, so as to carry the then suspended mold over a car standing in another position. It may be on a second track I), and the exhaust-valve of the pipe 19 is opened, so as to permit the ram 9 to descend and to I Then to free the links 13 from the mold, the ram 7 is raised by water admitted through the pipe 20, so as to cause its shoe 17 to engage and lift the collar 15, which, acting on the arms 16, spreads the links 13 and frees them from the lugs on the mold. The apparatus thus afiords an efiicient means for extracting ingots without necessitating Subsequent handling either i of the ingot or the mold,and it Will be recog- %nized by those skilled in the art as a most desirable labor-saving contrivance. constructed as shown in the drawings, the apparatus may be employed for stripping two Iingot-molds at once, both'cylinders' 5 being foperated simnltaneouslyl Its action in this regard is shown in Fig. 1.

lowered by exhausting water from thepipe 20, 3

When

As a matter of convenience in practice, in-

stead of casting the ingots in the casting-pit @and then lifting them onto the car, I prefer to teem the steel into themolds when the latiter are on the car, and after solidification of 2 thetsteel to bring the car into position under fthe apparatus. 7 ion a bottom plate resting on thebed of the gear, the mold being held in position by en-. I gagement of its lower edge. with lugs c on the plate.

automatic. The valve in the water-supply To this end I set the molds Many modifications in the form and rela- Qtive arrangement of: the parts ofthe apparatus within the scope of my invention will'sug- .g est themselves to those skilled in the art, and such modifications I intend toinclude in the following claims.

below the piston S and raising this piston,

The toggle-levers 1G, in combination with the arms or links 13 and the means for operating them, the relative arrangement of the pipes 21 and; 22, and the exterior guides for the rams or cylinders are devices which I intend to claim, broadly, as mill appliances with out limitation to their application to ingotextractingapparatus. For example, the toggle-levers 16, the arms or links, and the operating mechanism may be used in ingot-tongs, &c. The cylinder 5,its rams, and water-connections may also be used in other apparatus and combinations. 1 also. intend to claim, broadly, in ingot extracting apparatus a loosely-suspended cylinder having a plunger and arranged so that on the application of pressure to the cylinder it shall project the plunger and shall tend to raise the cylinder. It should be noted, also, that unless expressly sostated theclaims relating to thevrams and lifting mechanism are not limited to the contwo independently-movable rams arranged therein,one encircling the other, fluid-supply pipes, and lifting appliances secured to one of the rams, substantially as and for the purposes described.

2. The combination of the upright cylinder, two independently-movable rams arranged therein, a fluid-supply pipe entering the cylin-' a fluid-supply pipe entering the cylinder at the outerside of the other ram, substantially as and for the purposes described.

3. The combination of the suspended and upwardly-movable upright cylinder, two 1ndependently-movable rams arranged therein, a fluid-supply pipe entering the cylinder and supplying motive fluid to one side of one of the rams, a hollow stem 22, extending through the head of said ram and supplying motive fluid to the opposite side thereof, and a fluidsupply pipe entering the cylinder at the outer side of the other ram, substantially as and for the purposes described.

4. In ingot-extracting apparatus, the combination of a suspended and upwardly-movable cylinder, a plunger arranged therein, and lifting appliances, substantially as and for the purposes described. i

5. The combination of a lifting-motor, laterally-movable links or arms connected with the lifting-motor and adapted to be raised thereby, and independently-acting mechanism connected with the arms and adapted to spread them, substantially as and for the purposes described.

6. The combination, with pivotally-mounted links or arms and alifting-plunger, of toggle-levers connected with the links or arms, a plunger operative to move the toggle-levers, and a collar mounted on the last-named plunger and connecting the toggle-levers, substantially as and for the purposes described.

7. In ingot-extracting apparatus, the combination, with the cylinder 5, of rams arranged therein, one inside the other, one of said rams projecting downwardly and adapted to engage the ingot, lifting appliances on the other ram, and fiuidconnections by which the last-named ram may be raised independently of the other, substantially as and for the purposes described.

8. In ingot-extracting apparatus, the combination, with the cylinder 5, of rams 7 and 9 arranged therein, one inside the other, a yoke secured to the ram 9, and links depending from the yoke, substantially as and for the purposes described.

9. In ingot-extracting apparatus, the combination, with the cylinder 5, of rams 7 and 9 arranged therein, one inside the other, a yoke secured to the rain 9, links depending from the yoke, and toggle-levers connecting the links and adapted to be operated by one of these rams, substantially as and for the purposes described.

10. In ingot-extracting apparatus, the combination, with the cylinder 5, of rams 7 and 9 arranged therein, one inside the other, links, toggle-levers connecting the links and adapted to be operated by one of these rams, and a collar on the other ram connecting the tog gle-levers, substantially as and for the purposes described.

11. The combination, with the ram 9, having a shoulder or recess 17 formed thereon, of a yoke made in sections fitted around the ram and secured together, and depending links, substantially as and for the purposes described.

12. in 111 got-extracting apparatus, the com bination of the suspended and upwardlymovable cylinder, rams 7 and 9 contained therein, a liuid-supply pipe entering the cylinder between the heads of the rams and fluidsupply pipes entering at the ends of the cylinder, one of the rams having a projecting end adapted to engage the ingot and the other ram having lifting appliances for the mold, substantially as and for the purposes described.

13. In ingot-extracting apparatus, the combination of the cylinder, rams 7 and 9 contained therein, a fluid-supply pipe entering the cylinder between the heads of the rams and fluid-supply pipes entering at the ends of the cylinder, oneof the rams having aprojecting end adapted to engage the ingot, and the other rain having lifting appliances for the mold, substantially as and for the purposes described.

14. In ingot-extracting apparatus, the combination of the cylinder, rams 7 and 9 contained therein, a fluid-supply pipe entering the cylinder between the heads of the rams, and fluid-supply pipes entering at the ends of the cylinder, one of the rams havinga projecting end adapted to engage the ingot and the other ram having lifting appliances for the mold, and an external guide for the ram, substantially as and for the purposes .described.

15. In ingot-extracting apparatus, the combination,with a ram adapted to fit on the ingot, of a removable shoe for the ram, substantially as and for the purposes described.

16. In ingot-extracting apparatus, the combination, with two adjacent cylinders having lifting-rams, of an interposed guide-bar, and guides for the rains, substantially as and for the purposes described.

17. In ingot-extracting apparatus, the comtween the heads of the rams, and fluid-supply pipes entering at the ends of the cylinder, one of therams having a projecting end adapted to engage the ingot and the other ram having lifting appliances for the mold, substantially as and for the purposes described.

19. In ingot-extracting apparatus, the combination of an elevated trolley, a racking-cylinder connected with the trolley and adapted to move it back and forth, an upright cylinder carried by the trolley and havingaplungeradapted to engage the ingot, and moldsuspending devices also carried by the trolley and situated in proper position to suspend the mold directly under the plunger, substantially as and for the purposes described.

20. The combination of the mold-lifting and stripping cylinder, aracking-cylinder, and adjacent cars, one carrying the mold and ingot beneath the cylinder and the other adapted to receivethe mold when the lifting-cylinder is moved; above the same by the racking-cylindjer, substantially as and for the purposes, described. I

21. In ingot-extracting apparatus,.the com- I bination, with a vertical ram adapted to bear I onthe ingot, of a second mold-lifting ram, 5

f my hand this 7th day of substantially as and for the purposes described.

22. In ingot-extracting apparatus, the combination of a mold-lifting ram having links got and in its vertical motion to engage and 5 spread the links or arms, substantially as and for the purposes described- 24:. In ingot-extracting apparatus, the com- I binatiomwith laterally-movable lin ksor arms and a lifting-ram, of an ingotrrestrainin g ram,a collar mounted thereon and adapted to be moved by the ram, and toggle-levers coni meeting the collar with the links or arms, substantially as and for thepurposes described.

In testimony whereof I have hereunto set May, A. D. 1890. HENRY AIKEN. Witnesses:

THOMAS W. BAKEWELL,

W. B. OoRWIN.