US1054315A - Jarring-machine. - Google Patents

Description

R. P. RINGLE.

JARRING MACHINE.

APPLICATION FILED JULY 17, 1912 1,054,315. Patented Feb. 25, 1913.

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R. F. RINGLE.

JARRING MACHINE. APPLICATION FILED JULY 17, 1912,

1,054,315. Patented Feb. 25, 1913.

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JARRING MACHINE, 4 APPLICATION FILED JULY 17, 1912. 1 054 3 1 5. Patentgd Feb. 25, 1913.

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' 'nnrrnn STATES PATENT OFFIQE.

ROBERT 3i. RINGLE, OF ZELIENOPLE, PENNSYLVANIA, ASSIGNOR TO HERMAN PNEU- MATIC MACHINE COMPANY, OF ZELIENOPLE, PENNSYLVANIA, A CORPORATION 01- PENNSYLVANIA.

JAR'RINGr-MACHINE.

Specification of Letters Patent.

Application filed. July 17, 1912. Serial No. 709,958.

To all whom it may concern:

Be it known that I, Ronnn'r F. RINcLE, a resident of Zelienople, in the county of But ler and State of Pennsylvania, have in vented a new and useful Improvement in J arring-Machines; and I do hereby declare the followin' to be a full, clear, and exact description t ereof.

My invention relates to molding machines and has special reference to the form of sand molding machine known as the jarring type wherein the pattern is placed in a casing or flask and sand placed around the same and this is then jarred by pneumatic means until the sand has attained the required degree of solidity.

The object of my invention is to provide a cheap, simple and efficient form of sand molding machine, which, in-addition, to the jarring process will be equipped with the necessary apparatus for squeezing the sand into the flask after the jarring operation is completed and the flask will then be re.- versed nd the pattern removed therefrom by raising the same from said liask.

My invention consists, generally stated, in the novel arrangement, construction and combination of parts as hereinafter more specifically set forth and described and particularly ointed out in the claims.

To ena 1e others skilled in the art to which my invention appertains to construct and use my improved molding machine, I will describe the same more fully referring to the accompanyin drawing, in which Figure 1 is a site elevation of my improved molding machine complete. Fig. 2 1s a like View of the same showing the squeezing operation. Fig. 3 is a similar View showing the machine in position to have the flask reversed for withdrawing the pattern from the same. Fig. 4 is a like view showing the pattern withdrawn from the flask. Fig. 5 is a vertical cross sectional view of the machine in its normal position. Fig. 6 is an end view, showing a portion of the molding machineavith the pattern flask suspended for reversing.

Like symbols of reference herein indicate like parts in each of the figures of the drawing.

As illustrated in the drawing A represents my improved molding machine in which 1 represents the base above which is a ing 2 and is of rectangular shape in an in verted cup-shaped form, so that its outer annular flange 7 will fit around the upper end of said casing when such plate is in its lowered position. Extending down from the pattern plate 6 is the inner annular flange 8, whichis connected to the plunger 5 by a series of ribs or Wings 9, while at each corner of the same and intermediate of said corners is a post or enlargement 10 extending around said flange from the bottom of the pattern plate 6 to a point below said flange. Below each of the enlargements 10 is a jarring post or bracket 11, which is formed as part of and extends inward from the inner face of the casing 2, and within each of the same is a seat 1.2 for the reception of a resilient jarring block 13, preferably formed of rubber or other suit able flexible material. Fitting within each of the seats 12 and against the upper faces of the blocks 13 therein, is a wearing block plate 14, and such )latcs extend above their respective seats and are adapted to come in contact with and be engaged by the lower ends of the posts or enlargements 10 in line with the same in the jarring operation of the machine.

Below the cylinder '3 in the casing 52 is another cylinder 15 which is located centrally of the walls of said casing and such cylinder has a piston 16 therein, such piston at its upper end being of a smaller diameter than the plunger 5 in'the cylinder while the lower end 17 of said piston is considerably greater in diameter than the plunger 15, the purpose of which will be hereinafter explained. The plunger 5 and the lower end 17 of the piston 16 are each provided with the usual packing rings 16 for preventing the leakage of the operating fluid from the cylinders 53 and 15 respectively and the cylinder 15 is inclosed at its lower end by a plate 18.

Along the outerside of the cylindersfi and is connected the valve casing 19 which has a fluid supply pipe 20 connected thereto and such pipe is adapted to enter said valve engage with a valve-scat when in its raised position and close' a passageway 26 above the same which leads into an exhaust chamber 27, )Nhll said chamber is provided with an exhaust pipe 28 for carryingaway the exhausted fluid from the machine.

hove the poi-U23 in the wall of the cylindcr is another port 29 which is closed by the plunger-.5" in said cylinder except when the plunger has reached its upper position, and said port is adapted to communicate with a passageway 30 in thevalve casing 19 while such passagewaycommunicates witha small difierential cylinder 31 at the upper end of the valve casing 19. This 'differentialcylinder 31 contains a differential alunger 32 which has a recess 33 between the ends of the same and communicatingwith the recess at all times is a supply of com pressed air or other operating fluid which enters said difi'erential cylinder through the supply pipe 34 above the same.

The double faced Valve 21 has a stem connected to the upper end otythe same and such stein extends upward into a small cylindcr and connected to a piston 37 which operates in said cylinder simultane ously with said double faced valve. Above the cylinder 36 is an upper wall which has a pair of ports 39 and l-O in the same and the ioi'n'icr port adapted to comnnlnirate with the cylinder 36 and with that portion of he dili'ercntial cylinder 31 which is traversed by the recess 33 of the differential unger flihwhilc the port 40 is adapted to "id between the cylinder 36 and that part or the. diiterei'itial cylinder 3i atv the forward and of the dill'erential plunger The upper end of the difit'ercntial cylinder 31 is provided with an exhaust openings-1 which is adapted to exhaust the fluid from the forward side of th differential plunger-32.

The plate 18 which incloses the lower end of the cylinder 15 is provided with a. port 42 which is supplied With' operating fluid from a pipe 43 and such, pipe also takes care of the'exhaust from the cylinder 15.

The plunger 5 has an opening 44 in the 'auze in line with. the port u ger is in lower position. comey -the e the casing 2 so that in case the ports inthe ferential cylinder 31'into the interior of said plunger where it is conveyed to the atmos phere through the port. 4:5 at the upper end -01? the same into the casing 2, which has free communication with the atmosphere.

In the opposite side of the cylinder 3 from the valve casing 19 is a safety port- 46 which is at a position slightly higher than the port 23 and said port leads into the interior of valve? casing 19 should fail to operate the fluid entering thecylinder 3 from the passageway 22 of said valve casing will be exhausted from said port 46 into said casing andpassfrom thence into the atmosphere.

At the bottom of the casing 2 and slightly 'abox e the base 1 is a shafts? which'extends througlisaid casing being-journaled intheside walls of; the same. This s'haft47 is provided at each end of the same and with out the j'casing 2 with an upwardly extending rod or arm 48 and such arm is securely mounted onlsaid shaft while' at the upper end otft-he same is a plate or squeezing head 49. This squeezing head 49' extends be-- tween the arms 48 and is regulated in position by means of the nuts 50 whichengage with. the threaded outer end 51 of saidarms so that the squeezing head 49 may be regulated or adjusted to any desired position on said arms.

.On each side of the casing 2, Where'the sha'l't- 4'7 emerges from the same, is a plate 52 which is bolted onto haid casing and has an upwardly extending shoulder 53' and said shoulder has a heavy spiral springha connected thereto in any suitable manner while the other end of said spring is c0nnectcd securely to the arm 48 so that when. the arms are in the position such as shown in Fig. 1 the spiral spring 54L will have considerable tension placed thereon and the operatcr can easily bring said. squeezing head to a 'crtical-position on account of the as sistance rci'idered by said springs.

The top of-the table or pattern plateti is so constructed by means of the resilient jar-- ring device that anything" laid on the top of the same will not be jarred out of posi- (ion by the jarring operation as the torce thus cr ated is all exerted in a vertical dircction. The top of the table is provided with. a turnover plate 55, to which the pat tern is conveniently secured by any suitable means, such as bolting, and the flask 56 is set in position on said turnover plate. This flask 5G is ordinarily of square shape and its size regulated by the size of the pattern within the same, and said flask is open at both ends so that the turnoyer plate the same.

we turnover plate is provided with a l non hotly '1 which, has a bolt 57 eX- through the hollow sea is as j 55 acts as a bottom for l tending d own.

ter 58 thereof and such bolt is adapted to carry a trunnion 59 said trunnion being cirtop of the same and such turning of the. bolt will change the position of the trunnion thereon, so that the exact center of gravity can be readily located in order to provide for the easy rotation of the turnover plate 55 and the flask 56 carried thereon. The flask 56 at certain times is covered with a follow board 62 which when in position will be secured to the flask 56 by means of clamps 63 which unite the follow board flask 56 and turnover plate 55 together so that the whole combination may be revolved with out disturbing the'contents of said flask, as hereinafter explained.

The casing is provided on two sides of the same with an arm 64 which is pivoted in said casing and has a forked end 65 and such end is also provided with a lug 66 on each side of the same, and each of said lugs has a set screw 67 fitted into the same, said screws being; freely rotatable in order to regulate the distance of the end of the same extending through said lug.

Connecting with each of the arms 64: is

a rod 68 which engages at a point above the center of the same and such rod is connected at its lower end to a small arm 69, said connection being pivotal while the other end of said rod is connected to a shaft 70. The shaft is adapted to extend entirely through the casing 2 and the connection of the small arms 69 with the same is positive so that.therevolving of said shaft will rotate said arms and thus serve to operate the rod 68 connecting with the arm (it. At one end of the shaft 70 is an operating hair dle 71 which is fixedly mounted on said shaft and said handle is operated by the operator of the machine at various times, as

hereinafter explained.

The use and operation of my improved moldlng machlne is as follows: The turn-' over plate 55 is placed on the table or pat tern plate 6 in such a position that the trun'nions 59 are centrally located on the vertical line of the machine and the pattern a is then secured to said turnover plate in any desired manner, such as by bolting after which the flask 56 is placed on said turnover plate without any holding means and molding sand is then thrown into said flask and around the pattern (1 until the flask isheaped up with the same. The machine is now ready for operation. Coinpressed air or admitted to the valve casing 19 and such fluid enters from the main supply pipe 20 and passes upward past the valve 21 and into the passageway 22 whence it passes through the port 23 in the wall of the cylinder 3 and beneath the plunger 5. The plunger 5 is thus raised by the operating, fluid until the bottom of the same passes the port 29 thereupon the operating fluid rushes through said port and passes up the passageway 30 in the valve casing 19 and enters the dill'crential cylinder 31 at the. rear of the dill'erential plunger 32 so that said plunger thus moved over in said cylinde and the munprcssed air from the supply pipe 3 which enters the recess 33 in said diflorential plunger will thus connector connnunicate with the port 39 in the upper wall 38 and pass dmvnward i.1to the cylinder 36 below the same. The forward end of the differential cylinder 32 has closed the port 40 in the upper wall 38 so as to prevent the escape of the fluid through said port and as the said fluid enters the cylinder 36 it faces the piston 87 in said cylinder downward and thus shuts otl the supply of compressed air or other operating fluid from under the plunger 5 so that said plunger will fall in the cylinder 3 and the enlargements .10 will strike on the wearing block plates 14: and thus jar the contents of the flask so that the sand will be packed tightly around the pattern (6 and all crevices and coriun's well filled with the same.v As soon as the plunger drops in the cylinder 3 the port 2!) will thus be closed and the pressure on the differential plunger 32 will he stopped so that thepl'ungcr will return to its Ollg'lllfll position on account of the lluid from the supply pipe 34- hearing against the inner walls oi said plunger of which the rear wall is of the greater diameter. As the plunger 5 drops in the cylinder 3 the fluid below the same will be exhausted from said cylinder through the port 23 in. the wall of the same and into the passage- AWL) 22. then throuo'h the passageway 26 above the sam and into the exhaust chamher '27 from which it is exhausted through the exhaust pipe 28. The pressure of the operating fluid in the main supply pipe 20 now raises the double t'aced valve 2'! which carries with it the stem 33 and the piston 37 and the operation is repeated as described. After the jarring operation has been completed and the sand has all been packed around the pattern a with the required degree of solidity the admission of the operatin; fluid is out of? so that the plunger 5 will remain at its lower position in the cylinder and the enlargements l0 on the pattern plate 6 will rest on the wearing; block plates M. The squeezing head =1." is now drawn v upward bv the og'mrator so that the arms 48 other operating fluid is now I are in a wriioal position and plunger in the cylinder the said'squeezing head will be adapted to be directly above the flask 56. Operating fluid is now admitted to the cylinder" through the supply pipe 43 and port 4 in the lower plate 18 of said cylinder and such high pressure and 1no-ves' fluid is of a very the piston 16 upward until the uppertend of the same reaches the bottom of the main 3 whereupon the said plunger is carried upward until the v sand in the flask on the patternplate or table 6 comes in contact with the squeezing head 49, so thatthe powerful pressure ex- .56; is-now cleaned of all superfluous sand above the upper ends of the Walls of the same and thegfollow board 62 is placed coversthe same} thereon so that the"said board completely v The turnover plate 55, flask 56 and follow board 62 are all united togethersby means of the clamps 63', which are easilyadjusted and can be removed Without any appreciable delay. The operating fluid is again admitted to the cylinder 15, before described, so that the piston 16- and plunger 5 will be raised and the flask 56 thus elevated, after which the operator grasps the handle71'and raises the same so that the small arm is moved downward, which will carry the rod 68 with the same so that the arm 64 will be revolved on its pivotal connection and this will cause it to assume a vertical position and 'the forked ends 65 of said arms will be directly beneath the trunnions 59 on the turnover 7 port plate The operating fluid is now exhausted from the cylinder 15 through the 42 and the supply pipe so that the table or pattern plate 6 is lowered vand the .trunnions 59 rest in the forked ends 65 of I cylinder 15 through the supplv pipe 43 the arms 64, while the said pattern plate will continue to drop until it assumes its a original position with-the enlargements or posts 10' resting. on the wearing block plates 14. This will allow sufficient space for the flask to'be revolved and this operation is easily accomplished by hand as the truunions are so located as to*be directly in the center of gravity of the flask. As the flask 56 is revolved the trunnion plate 60 limits its motion to half a revolution so that the said plate will strike and rest on the lug 66 on the forked end of the arm M. The operating fluid is again admitted to the and port 42 in the lowed-plate 18 of saidk-yliwlor which will again raise the piston 15 and the plunger 5 so that the table or pattern plate 6' will rise to the position where'the flask 56 rests upon the same. The clamps 63 are now removed from their engagement :with the flask 56, follow board 62 and turnover plate 55, and said turnover plate having secured thereto the pattern a is resting on the top of the flask 56 while the follow board is between the pattern plate 6 and said flask. The operating fluid is now exhausted from the cylinder 15, as before described, and the pattern plate 6 is allowed to descend, while the flask 56 and follow board 62 resting upon the same will also descend on said plate and the pattern a, which is held by the turnover plate 55, will be with-- drawn from the sand in said flask and will remain suspended on account of the engagement of the trunnions 59 of said turnover plate in the forked ends 65 of the arms metal poured into the same and is removed from the pattern plate 6 toany suitable lo cation, while the tuinover plate 55 will be removed from the-upright forked arms 64 and another flask placed on the table 6 for 'a like iarring, squeezing and. turning.

Tn the past the main ring and squeezing machines has been the means of controlling the large cylinder necessary to give the tremendous power required -in the squeezing operation. This, difficulty has been removed by placing an independent .cylinder in the machine for the sole purpose of squeezing the sand into the mold, and this cylinder is not connected in any way with the main plunger of the machine. By

main plunger a great amount of energy is saved 1n that if connected to said plunger it would be necessary to raise the same twenty or thlrty times during the arring operation.

extra pneumatic appliances other than those Various modifications in the design and from the spirit .of the invention or sacrific ing anyof its advantages.

.W'hat I claim asmy invention and. desire to secure by Letters Patent is- 1. In a molding machine, the combination of a jarring table for carrying a pattern and flask a plunger below said table for engaging with the top of said flask, and means below and independent of said plu'n gcr for pressing the sand m saidliask said flask.

2. In a molding machine, the combination ol' a jzll'l'lllg table for carrying a pattcrn and (lie a p ungei be Us no. ta it i muoiuavwally arring the re, a head on; mg with the top of sald flask, an

Theflask 56 is now ready to have the molten disadvantage of jarplacing this independent cylinder below the The pattern drawing device requires no already on the machine for other purposes automatically jarring the same, a head forv construction of my improved molding machine may be resorted to without departing against said head to squeeze said sand into against said head to squeeze said sand in.

said flask.

4. In a molding machine, the combination of a jarring table for carrying a pattern and flask, a plunger below said table for automatically jarring the same, a pivoted head i for engaging with the top of the flask and having a spring connected thereto, and a piston below said plunger for pressing the sand in said flask against said head to squeeze said sand in said flask.

- 5. Ina molding machine, the combination of a jarring table for carrying a pattern and flask, a plungerbelow said table for automatically jarring the same, means below and inde endent of said plunger for raising said tab'l and flask, and means engaging with the flask for suspending the same to permit it tobe turned for withdrawing the pattern from the same.

6. In a molding machine,the combination of a jarring table for carrying a pattern and flask, a plunger below said table for automatically jarring the same, a piston below and independent of said plunger for raising said table and flask, and means engaging with the flask for suspending the same to permit it to be turned for withdrawing the pattern fronl the same.

7 In a molding machine, the combination of a jarring table for carrying a pattern and flask, a plunger below said table for automatically jarring the same, means below and independent of said plunger for raisin said tableand flask, means engaging witi the flask for suspending the same to permit it tobe turned for withdrawing the pattern from the same, and means on said last named means and flask for limiting the movement of said flask.-

8. In a molding machine, the combination of a jarring table for carrying a pattern and flask, a plunger. below said table for automatically jarring the same, a piston below and independent of saidplunger for raising said table and flask, means engaging with the flask "for suspending the same to permit it to be turned for withdrawing the pattern from the same, and means on said last named means and flask fonlimiting the movement of said flask.

9. In a molding machine, the combination" of a jarring table for carrying a pattern and flask,a plunger below said table for automatically jarring the same, a head engaging with the top of-the flask, means for pressing the sand in said flask against said head to squeeze said sand into said flask,-

and means engaging with the flask for suspending the same t'opermit it to be tagged 'for withdrawing thefpattern from the same.

"10. In a molding machine, the combina- .tion of a jarring table for carrying a pattern and fiask, a plunger below said table for automatically jarring the same,,& head engaging with the top of theflask, a v piston for pressing the sand in said flask against said head to squeeze said sand into said flask, and means engaging with the flask for suspending the same to permit it to be turned for withdrawing the pattern from the same.

11. In a molding machine, the combination of a jarring table for-carrying a pattern and flask, a plunger below said table for automatically jarring the same, a head engaging with the top of the flask, means below said plunger i'or pressing the sand n said flask against said head to squeeze sald sand into said flask, and means engaging with the flask for suspending the same to permit it to be turned for withdrawing the pattern from the same.

12. In a molding machine, the comblnation of a jarring table for carrying a pat:

tern and flask, a plunger below said table for automatically jarring the same, a'head engaging with the top of the flask, a plston below said plunger for pressing the sand n said flask against said head to squeeze said sand into said flask, and means engaging with the flask for suspending the same to permit it to be turned for'withdrawlng the pattern from the same,

In testimony whereof, I, the said ROBERT F. RINGLE, have hereunto set my hand.

ROBERT F. RINGLE.

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