US1083761A

US1083761A - Valve for jarring-machines.

Info

Publication number: US1083761A
Application number: US63567311A
Authority: US
Inventors: Robert Franklin Ringle
Original assignee: Herman Pneumatic Machine Co
Current assignee: Herman Pneumatic Machine Co
Priority date: 1911-06-27
Filing date: 1911-06-27
Publication date: 1914-01-06
Anticipated expiration: 1931-01-06

Description

11. F. RINGLE.

VALVE POB. JARRING MACHINES.

APPLICATION FILED JUNE 27, 1911. v1 ,08 3 ,76 1 Patented Jan. 6, 1914,

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VALVE POR JARRING MAGHINBS.

APPLIoATIoN FILED m1112211, 1911.

1,083,761 Patentd-Jau, 1914.

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Mm fw W UNITED STATES PATENT oEEIoE.

ROBERT FRANKLIN INGLE, 0F ZELIENOIPLE, FENNSYLVANIA, ASSIGNOR. TOIHERMAN PNEUMATIC. MAQHINE COMPANY, QF ZELIBNOPLE, PENNSYLVANIA, A CORPORA- TIQN 0F PENNSYLVANIA.

vanvn For. Jan'uuamaomnrs.-

To all inkom 'it may concern Beit known that I, ROBERT FRANKLIN RINGLE, a resident of Zelienople in 'the county of Butler and State of Pennsylvania, have invented a new and useful Improvement in Valves for Jarring-lllachines; and I do hereby declare the followin to be a full, clear, and exact description t ereof.

v My invention relates to molding machines, and hasspecial reference to what are known as jarring machines for forming sand molds.

and'one which will he automatic in operation and constructed of few and durable parts so that there will be practicallyno danger of said device getting out of order.

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

To enable others skilled in the art lto which my invention appertains to construct and use my improved molding machine, I will describe the same more fully, referring to the accompanying drawing, in which- Figure 1 is a central section of my improved molding machine showing the valve and plunger in one position. Fig. 2 is a central section of the valve and part of. the plunger in its other position.

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

As illustrated in the drawing, 1 represents the base ofthe machine, which has the casing 2 of rectangular shape extending up` from the same, and within said casing and formed as part of the same is the cylinder 3. This cylinder 3 is positioned vertically within the casing 2 and has a series of vertical wings 4 connecting the outer sides of the same with the inner sides of said casing, while a cross wall 5 formed in theV lower end of said cylinder, and above the same is an opening through which an operatingfluid, such as air, is admitted from the dif-' ferential control valve A for operating the same, while an operating port 6 4is located in said cylinder directly above the opening Speccaton of Letters Batent.

Application led .Tune 27, 1911. Serial No. 635,673.

6, and safety ports 6" are located above said f operatin port and at intervals around the Same. Iithin the cylinder 3 and above the cross wall 5 therein is the plunger 7 which is provided with an exhaust opening 7 near the lower end of the. same for communicating at lntervals with the opening 6 in cylinder 3, while said plunger is also provided with an opening 7 above said c linder and dlametrically opposite to said ex aust opening, and sald plunger is connected at its .suc plate extends lover the top of the caslng 2 and is of rectangular shape in an inverted cup-shaped form, so that its outer annular flange 10 extending down from the outer edge of the same will lit around the upper edge of such casing when the plate 1s in its lowered position. Extending down from the under face 11, which is connected to the plunger 7 by a series of wings or ribs 12 at each corner of the same and intermediate of said corners is a post or enlargement 13 extending around said flange from the bottom of the plate 9, to a point below said flange. Below each of the enlargements 13 is a jarring post or bracket 14 which is formed as part of and extends inward-from the inner face of the casing 2, and each of said posts is provided with an angular rib l5 connpcting the bottom of the same with .the inner side of the casing. Within the upper face of the post s 14 is a seat 16 for the reception of a resilient jarring block 17, preferably formed of rubber, or other suitable lexible material, and fitting within said seat and against each of the upper faces of said block is a wearing block plate 18, which extends above its seat and is adapted to engage with the post 13 in line with the same in the jarring operation.

Situated at a point substantially near the bottom of plunger 7 and connected to the outer face of the cylinder 3 within the cas-- uppler end to a table or pattern plate 9, andv Patented Jan. e, 1914..

ing 2 is the di'erential control valve A which has its body 19 secured to said cylinder by bolts 2O passing through Hanges 21 to supportthe same. The valve body 19 is provided at its upper end with a top cover 22 which tits over the same and is secured thereto by means vof the bolts 2S, while the lower end of said body is provided with a bottom cover 24, which is secured thereto b y means of bolts 25 fitting into the same. Conf necting to the lower end of 'the bottom cover y communicates with the opening 6 in the cylinder 3.

Immediately above the passageway29 in the valve casing or body 19 and communicating therewith is an exhaust opening 30 which leads into the exhaust chamber 31 immediately above the same, which is -provided with an exhaust pipe 31 leading therefrom, while a piston cylinder 32 located at the upper end of said valve body and is inclosed at its upper end with the top cover 22 which has a recessed center 33 therein,

while said cover is also provided with a small recess 34 for communicating with a passageway 35 in said valve body, which 4communicates with the opening 6 in the cylinder 3. In the upper end of the valve body 19 and opposite the piston cylinder 32 is an auxiliary check valve 36 which is mounted onpa spring 37, and the tension of such spring is regulated by the valve cap 38, which bears against said spring, while a passageway 39 leads in a horizontal direction from said valve to the passageway 35 in said body, and another passageway 40 leads in a vertical direction from said valve to the passageway 35. Within the passageway 35 and between the points where the passageways 39 and 40 communicate with the same is a stroke regulating valve 41 which is adapted to be adjusted by the operator to regulate the length oi the stroke of the l plunger 7 in the cylinder 3.

Within the piston cylinder 32 is a valve device having a piston 42 which operates within the same and has a stem 42 extending downward from the same through the exhaust chamber 31 and opening 30. This stem 42 is provided at its lower end with a head or flanged portion 43, and terminates in a shank 44, which engagesl by the valve face 44 at its lower end with the inlet seat 27 inthe bottom cover 24. The head 43 has a valve face 43 at the upper end of the same for engaging with a valve seat 30 above the passageway 29, and the piston 42 in the iston cylinder 32 is provided with .the ordinary rings 45 around the same to -prevent leakage of the operating fluid by piston in its lowered position such as is` shown in Fig. 2, the operating fluid enters through the supply pipe 26.and raises the piston to a position such as shown in Fig.

1, whereupon said fluid passes through the inlet seat 27 andthrough the

passageways

28 and 29 and enters the cylinder 3 through the opening 6 beneath the plunger 7 thereby raising said piston until the bottom of the same opens :the valve operating port 6 whereupon the operating fluid enters the passageway 35 and through the recess 34 and bears against the upper face of the piston forcing the same downward and shutting olf the operating fluid supply, whereupon the plunger 7 1n the cylinder 3 will drop down in said cylinder and the posts 13 on the table 9 will strike upon the jarring post 14, wh'ile the fluid in said cylinder and below said plunger will be expelled therefrom through the opening 6 in the cylinder 3, the passageway 29, the exhaust opening 30. the exhaust chamber 31, and linto the exhaust pipe 31. When the plunger 7'has reached its lowered position in the cylinder 3 the exhaust opening 7 in said plunger will communicate with the valve operating port 6 in the cylinder 3, thus allowing the fluid in the cylinder 32 to exhaust through the recess 34 and passageway 35 and said valve operating port and opening into the interior of said plunger, whence it is exhausted from the opening 7 into the casing 2. The machine is now ready for another operation and is accomplished in the manner described, so that the jarring is repeated untilthe sand in the mold is packed to the required degree of solidity.

The length of the stroke of the plunger 7 in the cylinder 3 is regulated by means of the stroke regulating valve 41, which is adapted t0 diminish and increase the amount of operating fluid which'passes through the passageway 35, so that when said valve has been regulated so as to allow only a small amount of the fluid to pass through the same been accomplished and the plunger 7 in the w.

cylinder 3 has been dropped to jar the same,

the fluid in the cylinder 32 will be expelled by the raising of the piston 42 and to prevent the necessity of such fluid passing through the diminished regulating valve 41, for exhausting the same through the operating port 6 in the cylinder 3 and exhaust opening 7 in the plunger, said fluid will enter the passageway 39 and will open the auxiliary check valve 36 and pass Idownward through the passageway 40 into the passageway 35 and exhaust in the manner described. This auxiliary check valve 36 will thus prevent the necessity of the plunger 7 remaining in its lowered position until all the fluid in the cylinder 32 has been exhausted throughthe regulating valve 4l when such valve has been regulated to reduce the amount of fluid flowing through the same.,

In the use of my improved valve there is a great advantage over the ordinary form of control of jarring machmes, in that, when a superfluous amount of the operating fluid` is admitted to thecylinder and under the plunger therein, there is no way of detecting this waste of energy, as the fluid is all 'discharged almost instant-aneously from said;`

Ahad dropped the distance required lto allow the jarring of the mold, but the fluid in the cylinder which had not had time to escape would form a cushion vin said cylinder against which said plunger would drop so that there. would be no jarring by the plate striking the jarring blocks, and the operator will thus be warned to diminish the supply of fluid to the cylinder.' It will also be readily seen that my improved valve is automat-ic and self contained and does not depend for its operation upon any hooks, levers, tripping devices, springs or any external mechanism, and that since said valve is entirely inclosed no dirt or sand can come in contact with any of the working parts of the same and thus cause injury..

The tiavel of the valve stem and piston is so small that there will be very little jarring of the same, so that the wear thus occasioned will be reduced to a minimum, and by the* arrangement of thejparts in my 'improved valve, the plunger will be given a perfect upward and downward stroke and will start upward -immediate-ly after the table has struck upon the jarring blocks, thus insuring an even and regular movement.

ing between said faces for allowing the ad-4 mission of operating fluid to said cylinder thro-ugh said port for raising said plunger. and adapted to be reversed by means of a,

piston abo-ve and connected to `said valve when said plunger has reached its raised position, thereby cutting oft' the admission of fluid to said cylinder to allow the fluid therein to exhaust through said -port and permit said plunger to drop in said cylinder.

2. In combination with a jarring machine l having acylinder provided with a port therein with an opening above the same and a plunger within said cylinder, a valve casing connecting with said port and opening having opposed faces above and below said port, and a double-faced valve within said casing between said faces for allowing the admission of operating fluid to said cylinder through' said port for raising said plunger and adapted to be reversed by means of a piston above and connected to said valve when said plunger has reached its raised position, by the fluid passing through said opening, thereby cutting off the admission of fluid to said .cylinder to allow the fluid therein to exhaust through said port and jermit said plunger to drop in said cylin- 3. In combination with a jarring Inachine having 'a cylinder provided with a port therein with an opening above said port and a plunger within said cylinder, a valve casing connecting with said port and opening having opposed faces above and below said port, and a double-faced valve within saidcasing between said faces having la piston connected to the upper end thereof, said valve 'allowing the admission of o-perating fluid to said cylinder through said port for raising said plunger and adapted to be vplunger to drop in said cylinder.

- 4. In combination with a jarring machine having a cylinder provided with a port therein with an opening above said port and a plunger within said cylinder, a valve cas-` 'loy ing connecting with said port and opening'- having opposed faces abo-ve and below saidv port, a double-faced valve within said casing between said faceshaving a piston connected to the upper end thereof, and a passageway in said casing communicating with one end of said piston and opening, said valve allowing the admission of operating fluid to said cylinder through said port for raising said plunger and adapted to be reversed when said plunger has reached its raised position by the fluid passing through said opening and passageway and above said piston, thereby cutting off the admission of fluid t'o said cylinder to allo-w the fluid therein to exhaust through said port and permit said plunger to drop in said cylinder.

5. In combination with a jarring machine having a cylinder provided with a port therein with an opening above said port and a plunger within said cylinder, a valve casing connecting with said port and opening having opposed faces above and below said port, a double faced Valve within'said casing between said faces having a piston connected to the upper end thereof, and a passageway in said casing communicating with one end of said piston Vand opening, another passageway in said casing communicating with said port, said valve being adapted to engage with the upper face to allow the admission of operating fluid to said cylinder through said last named passageway and said port for raising said plunger and adapted to engage with the lower face when said plunger has reached its raised position by said fluid passing through said opening and first nalned passageway and above said piston, thereby cutting off the admission of' fluid to said cylinder to allow the fluid therein to exhaust through said port-and permit said plunger to drop in said cylinder.

6. In combination with a jarring machine having a cylinder provided with a port therein with an opening above said port and a plunger within said cylinder, a valve casing connecting with said port and opening having opposed faces above and below said port, a valve within said casing between said faces having a piston connected to the upper end thereof, said valve allowing the admissio-nof operating fluid to said cylinder through said port for raising said plunger and adapted to be reversed when said plunger has reached its raised position byl the fluid passing through said opening and through a Jassav'ewa leading to one end-of 'D b Y' said piston, thereby cutting offl the admission of fluid to said cylinder to allow the fluid therein to exhaust through said port and permit said plunger to drop in said cylder, and means in said assageway to contro-l the rate of flow of fluid passing thro-ugh the same to lower said piston.

7. In combination with a jarring machine having a cylinder provided with a port therein with an opening above said port and a plunger within said cylinder, a valve casing connecting with said port and opening, a valve within said casing having a piston at the upper end thereof', said valve allowing the admission of operating fluid to said cylinder through said port for raising said plunger and adapted to be reversed when said `plunger has reached its raised position by the fluid passing through said opening and through a passageway leading to one end of said piston, thereby cutting off the admission of fluid to said cylinder to allow the fluid therein to exhaust through Said port and permit said plunger to drop in said cylinder', and a stroke regulating valve in said passageway to control the rate of flow of fluid passing through the same to lower said piston.

8. In combination with a jarring machine having a cylinder provided with a port therein with an opening above said port and a plunger within said cylinder, a valve casing connecting with said port and opening, a valve within said casing having a piston at the upper end thereof, said valve allowing the admission of' operating fluid to said cylinder through, said port for raising said plunger and adapted to be reversed when said plunger has reached its raised position by the fluid passing through said opening and through a passageway leading to o-ne end of said piston, thereby cutting off the admission of fluid to said cylinder to allow the fluid therein to exhaust through said port and permit said plunger to drop in said cylinder, means in said passageway to control the rate of `flow of fluid passing through the same to lower said piston, and a passageway communicating with said first named passageway and on each side of said means and adapted to exhaust the fluid from the end of said piston on its upward stroke.

9. In combination with a jarring machine having a cylinder provided with a port therein with anpopening above said port and a plunger within said cylinder, a valve casing connecting with said port and opening,v

a valve within said casing having a piston at the upper end thereof, said valve allowing the admission of' operating fluid to said cylinder through said port for raising said plunger and adapted to be reversed when saidl plunger has reached its raised position by the fluid passing through said opening and through a passageway leading to one end of said piston, thereby cutting off the admission 'of fluid to said cylinder to allow the fluid therein to exhaust through said yport and ermitsaid plunger todrop in said cylin er, means in said passageway to control the rate of flow of fluid passing through the same to lower said piston, a passageway communicating with said first named passageway and on c'ach side of said means, and a spring operated check valve in said last named passageway to permit the exhausting of the fluid through said passageway from the end of said piston on its upward stroke.