US2654924A - Closure device for feed chambers for finely divided materials - Google Patents
Closure device for feed chambers for finely divided materials Download PDFInfo
- Publication number
- US2654924A US2654924A US136766A US13676650A US2654924A US 2654924 A US2654924 A US 2654924A US 136766 A US136766 A US 136766A US 13676650 A US13676650 A US 13676650A US 2654924 A US2654924 A US 2654924A
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- US
- United States
- Prior art keywords
- chamber
- closure device
- feed chamber
- feed
- finely divided
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
- B22C5/12—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose for filling flasks
Definitions
- the invention relates to feed chambers and the 1ike through which finely divided materials such as sand, pulverized coal, cement, or the 1ike are fed to machines and provides an effectve means of making a quick air tight sea1 against a closure for the exit opening of the feed chamber.
- the feed chamber may, for example, be applied to the feeding of foundry sand or sand mixtures to a sand chamber of a core blowing machine; and the closure means may be a pivotal or slidng cut off plate or disc which can be manipulated, or mechanically operated, to bring it into and out of closing position across the discharge mouth of the feed chamber.
- the object of the invention is to provide pressure meanssurrounding the feed chamber exit opening which can be brought to bear upon the cut Ofi plate or disc when that is in position across said opening and thereby to force that p1ate or disc into sealng contact with a surface commodating a skirt or extension of the piston which surrounds the exit opening of the feed chamber and can be caused to bear upon and seal a closure member for that opening.
- Figure 1 is a vertical sectional view en line II of Figure 2through a feed chamber assembly of a blowing head of a core blowing machine.
- Figure 2 is a plan -ofthe surrounding casting that supports the feed chamber on the core" blowing machine. with the feed chamber removed.
- Figure 3 is an levation of the cut 01 plate shown in the assembly seen iri Figure 1, removed from the assembly.
- Figure 4 is a plan of the cut off plate.
- Fgure 5 is asection on line 5-5 of Figure 1.
- the feedchamber I mayconveniently consistf an externally cylindrica1 casting or forging with an internal bore slightly conical as at H from the 1ower end to a minimum diameter within the upper end at l2.
- the change in diameter produces a circular step or ledge 20 at an intermediate point in the length of the outer casting and the upper surface of ths step is the bottom of the annular space l4 below the external flange 3 of the feed chamber.
- the external surface of the outer casting preferabl3 follows approximately the internal bore with suitable strengthening webs 2
- the lower ends of the feed chamber 10 and the stepped surrounding casting terminate at 01' about the same level and the annular external flange 22 of the surroundingcasting is of substa'ntial thickness and forms an attachment means for securing it by bolts or the liketo an upper circular face of the sand chamber of the core blowing machine (not shown) or to a rigid annular attachment plate 23 capable of beng secured to the said machine and having a central opening 24 coaxial with that of the feed chamber.
- a skirt 2'lprojecting from the piston is a sliding fit.
- Fluid nlet passages 28 and 29 supplied from an external sourde are arranged to 1ead com presscl -air to the upper and lower parts respectively of the annular space I4 which formsth cylinder for the afcresaid piston 25 so that the piston can be forced doWnwardly and upwardly as desired by appropriate control f the supply to the passages 28,29.
- Feed chamber assembly or the supply of pulverised and fineiy divided material to machines comprising. in combination, a feed chamber open at the top and having an exit opening at the bottom, an imperforate pvoted closure device for the exit opening irom the said chamber, a surrounding casting spaced from the exterior of the said chamber, attachment means at the base of the said casting, a cylinder defined by the surrounding casting and the exterior of the feed chamber, an annular piston within the cylinder and movable axialiy under fluid pressure to -bear on the closure device fox the exit opening from the said chamber, and packing rings to which fiuid pressure may be appiied for sea1ing the spaces between the piston and the exterior of the feed chamber and interior of the surrounding casting.
- Feed chamber assembly for thesupply of pulverised and finely divided material to machines comprising a feed chamber open at the top and. having an exit opening at the bottom, a cyiindricai exterior wal1 of the feed chamber, a removable closure device for the exit opening. a sealing ring secured in the under surface of the closure device, a casting surro'unding and spaced from the cylindrical wal1 of the feed chamber and supporting the said chamber. an inner cyiindrical Wall of the casting and the exterior wall of the chamber defining a.
- Feed chamber assembly for the supply of pulverised and divided material to machines comprising an attachment p1ate adapted to be secured to the machine and having a central opening therein, an imperforate pvoted closure plate adapted when in closed position to cover the opening in said attachment plate, said c1osure piate being adapted for displacement towards or away from said attachment p1ate.
- a. hollow feed chamber surmounting saidattachment plate and spaced therefrom to permit pivotal movement of the closure plate. a bore in the feed chamber co-axiai with the attachment plate opening, the upper and 1ower ends of said bore defining materiai feed and exit openings respectively of the chamber.
- a casting surrounding and spaced from the feed chamber and supporting it in postion above the attachment piate, cylindrical exterior and interior walls of the feed chamber and surrounding casting respectiveiy, which wai1s confront each other and define an annular cylinder, and an axially displaceable annular piston mounted in the cylinder where it s1idably engages the confronting walls of the feed chamber and casting, said piston having a skirt which, when the piston is axialiy displaced in the cylinder towards the attachment plate, projects from the oylinder and bears upon the closure plate in its closed position to force the iatter into abutment with the attachment plate.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Devices For Molds (AREA)
Description
CIS. 13, 1953 3 H. WOOD ET 2,654,924
CLOSURE DEVICE FOR FEED CHAMBERS FOR FINELY DIVIDED MATERIALS Filed Jan. 4, 1950 3 Sheets-Sheet 2 Oct. 13, 1953 D. H. woon T AL 2654924 CLOSURE DEVICE FOR FEED CHAMBERS FOR FINELY DIVIDED MATERIALS Filed Jan. 4, 1950 5 SheetsSheet 5 x.vramvay Patented Oct. 13, 1953 CLOSURE DEVICE FOR. FEED CHAMBERS FOR FINELY DIVIDED MATERIALS David Howimrd Woud, Barnt Green, and Herbert James Roe, Knowle, England Application January 4, 1950, Serial N. 136,766 In Great Britain J anuary 6, 1949 6 Claims.
The invention relates to feed chambers and the 1ike through which finely divided materials such as sand, pulverized coal, cement, or the 1ike are fed to machines and provides an effectve means of making a quick air tight sea1 against a closure for the exit opening of the feed chamber.
The feed chamber may, for example, be applied to the feeding of foundry sand or sand mixtures to a sand chamber of a core blowing machine; and the closure means may be a pivotal or slidng cut off plate or disc which can be manipulated, or mechanically operated, to bring it into and out of closing position across the discharge mouth of the feed chamber.
The object of the invention is to provide pressure meanssurrounding the feed chamber exit opening which can be brought to bear upon the cut Ofi plate or disc when that is in position across said opening and thereby to force that p1ate or disc into sealng contact with a surface commodating a skirt or extension of the piston which surrounds the exit opening of the feed chamber and can be caused to bear upon and seal a closure member for that opening.
Other objects and features of construction of the invention will be apparent from the general description of the appended drawings which i1- lustrate, by way of example, a feed chamber assembly suitable for attachment to the sand chamber of a core blowing machine -for fou ndryuse.
In the drawings: Figure 1 is a vertical sectional view en line II of Figure 2through a feed chamber assembly of a blowing head of a core blowing machine.
Figure 2 is a plan -ofthe surrounding casting that supports the feed chamber on the core" blowing machine. with the feed chamber removed.
Figure 3 is an levation of the cut 01 plate shown in the assembly seen iriFigure 1, removed from the assembly.
Figure 4 is a plan of the cut off plate.
Fgure 5 is asection on line 5-5 of Figure 1.
In this illustrated example the feedchamber I mayconveniently consistf an externally cylindrica1 casting or forging with an internal bore slightly conical as at H from the 1ower end to a minimum diameter within the upper end at l2.
of two diierent diameters: an upper and larger bore !8 within the wal1 l and alower smaller bore IS: surrounding but spaced from the feed chamber exterior. The change in diameter produces a circular step or ledge 20 at an intermediate point in the length of the outer casting and the upper surface of ths step is the bottom of the annular space l4 below the external flange 3 of the feed chamber. The external surface of the outer casting preferabl3 follows approximately the internal bore with suitable strengthening webs 2| between the underside of the step 20 and an annular attachment flange 22.
The lower ends of the feed chamber 10 and the stepped surrounding casting terminate at 01' about the same level and the annular external flange 22 of the surroundingcasting is of substa'ntial thickness and forms an attachment means for securing it by bolts or the liketo an upper circular face of the sand chamber of the core blowing machine (not shown) or to a rigid annular attachment plate 23 capable of beng secured to the said machine and having a central opening 24 coaxial with that of the feed chamber. Around the feed chamber Ill is fitted a piston "25 for working in the annuiar space I4 below the eXternal flange I 3 of the said chamber and in the relatively deep but narrow annular spa oe 26 betweenthe wall of the chamber and the smallerbore l9of theouter cylindrical casting, a skirt 2'lprojecting from the piston is a sliding fit.
4. Feed chamber assembly or the supply of pulverised and fineiy divided material to machines comprising. in combination, a feed chamber open at the top and having an exit opening at the bottom, an imperforate pvoted closure device for the exit opening irom the said chamber, a surrounding casting spaced from the exterior of the said chamber, attachment means at the base of the said casting, a cylinder defined by the surrounding casting and the exterior of the feed chamber, an annular piston within the cylinder and movable axialiy under fluid pressure to -bear on the closure device fox the exit opening from the said chamber, and packing rings to which fiuid pressure may be appiied for sea1ing the spaces between the piston and the exterior of the feed chamber and interior of the surrounding casting.
5. Feed chamber assembly for thesupply of pulverised and finely divided material to machines comprising a feed chamber open at the top and. having an exit opening at the bottom, a cyiindricai exterior wal1 of the feed chamber, a removable closure device for the exit opening. a sealing ring secured in the under surface of the closure device, a casting surro'unding and spaced from the cylindrical wal1 of the feed chamber and supporting the said chamber. an inner cyiindrical Wall of the casting and the exterior wall of the chamber defining a. cyiinder, an annular piston guided in said cylinder, an attachment flange at the base of the surrounding casting, and a rigid attachment plate secured to the attachment fiange and having a central opening co-axial with the exit opening of the feed chamber, said attachment flange and rigid attachment plate defining therebetween a space for accommodating the removable closure device below said exit opening with the sealing ring of the removable closure device hearing upon the upper surface of the rigid attachment plate so that, when the piston is forced down on to the c1osure device, an air-tight closure is made around the exit opening of the chamber.
6. Feed chamber assembly for the supply of pulverised and divided material to machines comprising an attachment p1ate adapted to be secured to the machine and having a central opening therein, an imperforate pvoted closure plate adapted when in closed position to cover the opening in said attachment plate, said c1osure piate being adapted for displacement towards or away from said attachment p1ate. a. hollow feed chamber surmounting saidattachment plate and spaced therefrom to permit pivotal movement of the closure plate. a bore in the feed chamber co-axiai with the attachment plate opening, the upper and 1ower ends of said bore defining materiai feed and exit openings respectively of the chamber. a casting surrounding and spaced from the feed chamber and supporting it in postion above the attachment piate, cylindrical exterior and interior walls of the feed chamber and surrounding casting respectiveiy, which wai1s confront each other and define an annular cylinder, and an axially displaceable annular piston mounted in the cylinder where it s1idably engages the confronting walls of the feed chamber and casting, said piston having a skirt which, when the piston is axialiy displaced in the cylinder towards the attachment plate, projects from the oylinder and bears upon the closure plate in its closed position to force the iatter into abutment with the attachment plate.
DAVID HOWARD WOOD. HERBERT JAMES ROE.
References Cited in the flle of this patent UNITED STATES PATENTS Number Name Date 319,155 Wallington June 2, 1885 681.168 Graham et al Aug. 20, 1901 1.231.400 Mackall June 26, 1917 1.667.690 Hamm Apr. 24, 1928 2.042.772 Fahlbeck June 2. 1936 2.166.484 Carlson Juiy 18. 1939 2.380.647 Henderson July 31. 1945
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2654924X | 1949-01-06 |
Publications (1)
Publication Number | Publication Date |
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US2654924A true US2654924A (en) | 1953-10-13 |
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Application Number | Title | Priority Date | Filing Date |
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US136766A Expired - Lifetime US2654924A (en) | 1949-01-06 | 1950-01-04 | Closure device for feed chambers for finely divided materials |
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Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2793409A (en) * | 1954-02-16 | 1957-05-28 | Hansberg Fritz | Machine for the production of foundry cores and foundry moulds using compressed air |
US2882565A (en) * | 1953-09-18 | 1959-04-21 | Constructional Engineering Com | Core making machine |
US2928147A (en) * | 1955-12-23 | 1960-03-15 | Hansberg Fritz | Agitatorless foundry shooting device |
US2936099A (en) * | 1957-10-15 | 1960-05-10 | Smith Glen | Fuel dispensing nozzle, spout and screen assembly |
US3013766A (en) * | 1958-01-13 | 1961-12-19 | Baldwin Lima Hamilton Corp | Spherical valve |
US3063671A (en) * | 1957-12-06 | 1962-11-13 | Clayton W Anderson | Valve structure |
US3109457A (en) * | 1959-09-25 | 1963-11-05 | Aerotec Ind Inc | Gate valve |
US3212141A (en) * | 1962-03-23 | 1965-10-19 | Hansberg Fritz | Seal for the pressure frame of a core and mold making machine |
US3225396A (en) * | 1962-03-23 | 1965-12-28 | Hansberg Fritz | Seal for control slide of core and mold making machine |
US3229336A (en) * | 1963-04-29 | 1966-01-18 | Pettibone Mulliken Corp | Match plate molding machine for the simultaneous production of cope and drag mold sections |
US3480186A (en) * | 1967-12-22 | 1969-11-25 | United States Steel Corp | Sliding gate for metal-holding vessel |
US4050504A (en) * | 1975-04-30 | 1977-09-27 | Julius Hansberg | Core-blowing machine for preparing moulds and foundry cores |
US4794976A (en) * | 1986-05-13 | 1989-01-03 | Guido Peterle | Molding sand loading and injecting head, in particular for molded core forming machines |
US5101853A (en) * | 1989-03-06 | 1992-04-07 | Paul Wurth S.A. | Device for shutting of pipelines for transport of bulk products |
US20090057597A1 (en) * | 2006-02-01 | 2009-03-05 | Jong-Woo Ji | Protection vacuum gate valve |
WO2015063473A1 (en) * | 2013-10-31 | 2015-05-07 | Clyde Process Limited | Powder isolating valve |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US319155A (en) * | 1885-06-02 | Machinery for sowing fertilizing material | ||
US681168A (en) * | 1901-03-06 | 1901-08-20 | Benjamin J Graham | Acetylene-gas generator. |
US1231400A (en) * | 1915-09-25 | 1917-06-26 | James H Mackall | Candy-dispenser. |
US1667690A (en) * | 1926-09-22 | 1928-04-24 | Indiana Gravel Company | Sand gate |
US2042772A (en) * | 1935-02-14 | 1936-06-02 | Fahlbeck Ernest | Honey gate |
US2166484A (en) * | 1937-09-13 | 1939-07-18 | Adolph G Carlson | Hopper closure mechanism |
US2380647A (en) * | 1943-05-12 | 1945-07-31 | John L Henderson | Gate valve |
-
1950
- 1950-01-04 US US136766A patent/US2654924A/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US319155A (en) * | 1885-06-02 | Machinery for sowing fertilizing material | ||
US681168A (en) * | 1901-03-06 | 1901-08-20 | Benjamin J Graham | Acetylene-gas generator. |
US1231400A (en) * | 1915-09-25 | 1917-06-26 | James H Mackall | Candy-dispenser. |
US1667690A (en) * | 1926-09-22 | 1928-04-24 | Indiana Gravel Company | Sand gate |
US2042772A (en) * | 1935-02-14 | 1936-06-02 | Fahlbeck Ernest | Honey gate |
US2166484A (en) * | 1937-09-13 | 1939-07-18 | Adolph G Carlson | Hopper closure mechanism |
US2380647A (en) * | 1943-05-12 | 1945-07-31 | John L Henderson | Gate valve |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2882565A (en) * | 1953-09-18 | 1959-04-21 | Constructional Engineering Com | Core making machine |
US2793409A (en) * | 1954-02-16 | 1957-05-28 | Hansberg Fritz | Machine for the production of foundry cores and foundry moulds using compressed air |
US2928147A (en) * | 1955-12-23 | 1960-03-15 | Hansberg Fritz | Agitatorless foundry shooting device |
US2936099A (en) * | 1957-10-15 | 1960-05-10 | Smith Glen | Fuel dispensing nozzle, spout and screen assembly |
US3063671A (en) * | 1957-12-06 | 1962-11-13 | Clayton W Anderson | Valve structure |
US3013766A (en) * | 1958-01-13 | 1961-12-19 | Baldwin Lima Hamilton Corp | Spherical valve |
US3109457A (en) * | 1959-09-25 | 1963-11-05 | Aerotec Ind Inc | Gate valve |
US3225396A (en) * | 1962-03-23 | 1965-12-28 | Hansberg Fritz | Seal for control slide of core and mold making machine |
US3212141A (en) * | 1962-03-23 | 1965-10-19 | Hansberg Fritz | Seal for the pressure frame of a core and mold making machine |
US3229336A (en) * | 1963-04-29 | 1966-01-18 | Pettibone Mulliken Corp | Match plate molding machine for the simultaneous production of cope and drag mold sections |
US3480186A (en) * | 1967-12-22 | 1969-11-25 | United States Steel Corp | Sliding gate for metal-holding vessel |
US4050504A (en) * | 1975-04-30 | 1977-09-27 | Julius Hansberg | Core-blowing machine for preparing moulds and foundry cores |
US4794976A (en) * | 1986-05-13 | 1989-01-03 | Guido Peterle | Molding sand loading and injecting head, in particular for molded core forming machines |
US5101853A (en) * | 1989-03-06 | 1992-04-07 | Paul Wurth S.A. | Device for shutting of pipelines for transport of bulk products |
US20090057597A1 (en) * | 2006-02-01 | 2009-03-05 | Jong-Woo Ji | Protection vacuum gate valve |
WO2015063473A1 (en) * | 2013-10-31 | 2015-05-07 | Clyde Process Limited | Powder isolating valve |
US10184573B2 (en) | 2013-10-31 | 2019-01-22 | Clyde Process Limited | Powder isolating valve |
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