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US2568536A - Apparatus for filling and ramming foundry flasks - Google Patents

Apparatus for filling and ramming foundry flasks Download PDF

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Publication number
US2568536A
US2568536A US80679A US8067949A US2568536A US 2568536 A US2568536 A US 2568536A US 80679 A US80679 A US 80679A US 8067949 A US8067949 A US 8067949A US 2568536 A US2568536 A US 2568536A
Authority
US
United States
Prior art keywords
rotor
casing
ramming
blade
sand
Prior art date
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
Application number
US80679A
Other languages
English (en)
Inventor
Beech Austin Sidney
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Foundry Equipment Ltd
Original Assignee
Foundry Equipment Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from GB248349A external-priority patent/GB657197A/en
Application filed by Foundry Equipment Ltd filed Critical Foundry Equipment Ltd
Application granted granted Critical
Publication of US2568536A publication Critical patent/US2568536A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C5/00—Devices or accessories for generating abrasive blasts
    • B24C5/06—Impeller wheels; Rotor blades therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
    • B22C15/20—Compacting by centrifugal forces only, e.g. in sand slingers

Definitions

  • the present invention relates generally to apparatus for filling flasks with moulding sand. More particularly, the invention relates to such apparatus in the form of a ramming head of' the type (hereinafter referred to as ,the type described), by means of whichsand is projected into the flask, comprising a substantially .cylindrical casing having a lateral inlet for sand and a peripheral outlet which, when in use, is directed downwards, and a rotor that is rotatable in the casing for projecting sand through the outlet.
  • a ramming head of' the type hereinafter referred to as ,the type described
  • a further object is to provide, in a ramming head of the type described, a bladed rotor of improved construction as described hereinafter for producing a substantially continuous stream of sand propelled by the head.
  • a ramming head for projecting moulding sand into flasks comprising a substantially cylindrical casing having in aside wall a lateral inlet for sand, and having aperipheral outlet which, when in use, is directed downwardsand a rotor that is rotatable in th e casing for pr ectin sa t r ugh the out wwhich ramming head is characterised in that the rotor is provided at its periphery with a plurality of projector devices arranged to be operative in. succession to project sand through the outlet.
  • the projector devices may be situated in a circle coaxial with the axis of rotation of the rotor, and may be so arranged that, when the rotor rotates, they sweep successively past the inlet and successively deliver sand through the outlet of the casing.
  • the projector devices constitute each a projector vessel, each of which vessels is so arranged that, when the rotor rotates, it is placed successively in open communication with the inlet and outlet of the casing.
  • the rotor may be constituted by a paddlewheel-like structure having the projector devices at its periphery spaced angularly equally apart one from another about the axis of rotation of therotor.
  • each projector device is mounted on the body of the rotor so as to bemovable towards and away from the internal peripheral face of the casing.
  • the projector devices are constituted by end portions of impellers of elongated form, and releasable attachment means is arranged to fix each impeller to the rotor, which attachments means, when released, permit the impellers to be adjusted endwise in relation to the internal peripheral face of the casing, and enable them to be rigidly fixed in their position of adjustment.
  • the rotor has a plurality of substantially tangential seats arranged spaced apart one from another aroundits axis of rotation, and the attachment means adjustably secure the impellers each to one of said seats.
  • Each impeller and its projector device is preferably of U-section, and has its side limbs of different depth with the deeper side limb sit-- uated adjacentto side wall of the casing having the inlet.
  • the improved ramming head may comprise a central hollow support, whereof the larger part constitutes agear box, and the smaller part has the rotor journaled on it, a drive shaftthat extends through said support and has one end in driving connection with the rotor, and gearing,
  • the rotor has only two projector devices situated diametrically opposite one another.
  • Figure 1 is a perspective view showing one construction of ramming head according to the invention -ith; its cover plate. shown open and the wearing plate removed, I I
  • Figure 2 is a vertical transverse section taken on the line 2-2 in Figure 3, and a Figure 3 is a front elevation of the head Partly in section after removal of itscover plate andwearing plate;
  • speller 60 is adjustably secured in position in its equipped stud 62"or like fastener that extends
  • Figurel is a detail viewshowingarammer 1, blade or impeller detached fro'mthe rotor, and
  • Figure 5 is an end view of the impellershown in Figure 4.
  • Figure 6 is a diagrammatic view "of amodified construction of rotor.
  • a substantiallyrcylindrical casing designated enerally 40, comprises a side wall [2 carried by. acentral hollow support l4, l5, an arcuate peripheral rim or wall l8, and a cover plate 29 of dished formation which may be hinged, as at 2!, to the rim 18.
  • an annular wearing plate 22 shown in section in Figure 2 but omitted from Figures 1 and 3 for the sake of clarity lies parallel with the side plate I2 and bears against or is integral with the rim [8 which may have a liner (9. "These parts may be secured together in any convenient or known manner.
  • the central hollow support comprises an external part I4 constituting a gear box, and an internal tubular part It. which is formed as'or provided with the inner race of an anti-friction roller bearing 24, whereof the outer race is carried on or constituted by a hub 26 of a rotor described hereinafter, which hub has an end flange 28.
  • extends through the central hollow support, whereof the inner end part 3i isreduced and constitutes a stub shaft which drives the rotor.
  • An end fplate 32 has a boss 34, by which it is secured onithe stub shaft 3
  • This end plate 132 has a marginal portion that is secured by studs 38 to the fiange 28 of the hub 26, and has an annular rib 40 on which the flanged end of the hub 26 is seated. The other end of the hub has within it a ball-bearing 4
  • the outerend of the gear box [4 is journaled by an anti-friction bearing 42 on the larger part 30 of the impeller shaft. Any convenient means may be provided for; driving the impeller shaft. Asillustrated, a bevel pinion 44 fast on the shaft in the gear box meshes with a bevel gear wheel 46 which may be driven in any convenient manner.
  • the gear box I4 is considerably wider than it is deep.
  • I r Theupper part of the casing has in the side wall I2 a lateral inlet at 48, and a downwardlydirected outlet is provided at 50.
  • the inlet is preferably provided with a hood or cowl 52, immediately below which is arranged feed means for f supplying sand into the casing.
  • this feed means may comprise a conveyor of the endless member type having a belt 53 running over a roller 54. 1
  • the rotor has a circular hollow body portion 56: that is fasten the hub 26, and has within it a plurality of'substantially tangential seats 58 that are spaced apart equally about'itsaxis' of rotation and carry each an impeller 60, of'elonseat by attachmentmeans comprising a nutinto the seat and adjustably clamps the impeller ;rigidly in position in relation to the internal peripheral face 501: the casing, which face may be providedby the liner l9.
  • Each impeller 60 has an end portion that is 'situa ted adjacent to the rim is or its liner is,
  • the two side limbs 64 and 66 of the channel are of different depth, the deeper limb 64 being situated adjacent to the sidewall l2 having the sand inlet 48, and being arranged slanting outwards slightly as shown in Figures 2 and 5, so that, when in use, it will sweep past the inlet, and will exert a shearing action on the stream of sand entering the head through the inlet'48'.
  • each impeller forms a blade, and when the rotor, which is a paddle-wheel-like structure, is driven at ahigh speed, each projector vessel receives sand at the inlet 48 and projects it through the outlet 50, thereby producing a continuous stream of'sand for filling and ramming foundry fiasks' and the like. Owing to each impeller being adjustable longitudinally on its seat, wear of each projector vessel can be readil taken up. After opening the cover plate 20 access to the fixing screws 82 of the impellers can be had through the opening at 10 at the middle of, the wearing plate 22.
  • the impellers may beflat or concave blades without the side limbs of the channelshaped members 60 described above.
  • the wearing plate 22 may be omitted, and if so the coverplate constituting a side wall of the casing will be dished less than asshown inthe drawings.
  • a ramming head for projecting sand into flasks comprising a circular casing, a co-axial rotor therein and at least one straight channel shaped impeller blade of uniform cross-section throughout its entire length and having an operative part and an inoperative root part carried by the rotor, the root part of the blade being clamped within the rotor by releasable clamping means, the operative part projecting outwardly from the rotor towards the circular periphery of the casing, the clamping means being such that the blade is adjustable lengthwise to compensate for wear of the free end of'the opera tive part'of'the blade, thecasing being provided with a lateral inlet for sand close beside the path of the operative part of the blade and with a peripheral outlet.”
  • a ramming head for projecting moulding sand into flasks comprising in combination a circular casing having an inlet in one side close to the outer part of the casing and a peripheral outlet, a hollow rotor co-axial with the casing and havin its hollow interior accessible from one side, at least one impeller blade on the rotor, said impeller blade being of rectilinear channellike form in cross-section and being substantially straight longitudinally and said rotor being slotted in its periphery; to fit the blade and enable it to enter the interior of the rotor but project therefrom toward the periphery of the casing, a seating for said blade within the rotor and clamping means within the hollow part of the rotor to hold said blade on said seating.
  • a ramming head as claimed in claim 4 characterized by the fact that said seating is nonradial with respect to the casing and the rotor to hold the blade in a position at an angle to the radius of the casing and rotor.
  • a ramming head in which the seating and blade supported thereby are tangential to a circle within the rotor, the flanges of the channel blade projecting forwardly in the direction of rotation of the rotor, and the blade sloping rearwardly with reference to such direction of rotation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)
  • Centrifugal Separators (AREA)
US80679A 1949-01-28 1949-03-10 Apparatus for filling and ramming foundry flasks Expired - Lifetime US2568536A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB248349A GB657197A (en) 1949-01-28 1949-01-28 Improvements in or relating to apparatus for filling and ramming foundry flasks

Publications (1)

Publication Number Publication Date
US2568536A true US2568536A (en) 1951-09-18

Family

ID=38464273

Family Applications (1)

Application Number Title Priority Date Filing Date
US80679A Expired - Lifetime US2568536A (en) 1949-01-28 1949-03-10 Apparatus for filling and ramming foundry flasks

Country Status (7)

Country Link
US (1) US2568536A (xx)
BE (1) BE488029A (xx)
CH (1) CH275871A (xx)
DE (1) DE860394C (xx)
ES (1) ES187581A1 (xx)
FR (1) FR983758A (xx)
NL (1) NL72767C (xx)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2856084A (en) * 1951-05-01 1958-10-14 Blaw Knox Co Granular material handling equipment
DE970938C (de) * 1952-10-16 1958-11-13 Beche & Grohs Ges Mit Beschrae Feilenhaumaschine
US2944308A (en) * 1956-07-12 1960-07-12 Foundry Equipment Ltd Apparatus for filling and ramming foundry flasks
US3095019A (en) * 1960-03-08 1963-06-25 St Regis Paper Co Feed machine for bags
US3178098A (en) * 1962-08-10 1965-04-13 Westinghouse Electric Corp Fluid translating apparatus
US3596384A (en) * 1968-12-09 1971-08-03 Roy E Neujahr Excavation refill packer
US3603696A (en) * 1970-03-12 1971-09-07 Whirlpool Co Dishwasher
USB512547I5 (xx) * 1974-10-07 1976-01-13
US4516674A (en) * 1981-07-20 1985-05-14 Donald Firth Method and apparatus for conveying and metering solid material
US4988239A (en) * 1990-03-05 1991-01-29 Stamet, Inc. Multiple-choke apparatus for transporting and metering particulate material
US5051041A (en) * 1990-03-05 1991-09-24 Stamet, Inc. Multiple-choke apparatus for transporting and metering particulate material
US5355993A (en) * 1993-06-11 1994-10-18 Hay Andrew G Grooved disk drive apparatus and method for transporting and metering particulate material
US5485909A (en) * 1993-08-31 1996-01-23 Stamet, Inc. Apparatus with improved inlet and method for transporting and metering particulate material
US5497873A (en) * 1993-12-08 1996-03-12 Stamet, Inc. Apparatus and method employing an inlet extension for transporting and metering fine particulate and powdery material
US6213289B1 (en) 1997-11-24 2001-04-10 Stamet, Incorporation Multiple channel system, apparatus and method for transporting particulate material
US20110133476A1 (en) * 2010-04-29 2011-06-09 Jacob Johannes Nies Rotor support device and method for accessing a drive train of a wind turbine

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US578509A (en) * 1897-03-09 William henry drayton
US798699A (en) * 1904-03-28 1905-09-05 Le Roy W Stevens Rotary discharging apparatus.
US1309833A (en) * 1919-07-15 Molding apparatus
US1329459A (en) * 1919-05-27 1920-02-03 Emeis R Dunsford Machine for feeding sand to molding-flasks
US1364831A (en) * 1919-11-22 1921-01-04 Donald J Campbell Sand-ramming machine
US1789874A (en) * 1928-10-15 1931-01-20 St Regis Paper Co Yieldable propeller
US2092326A (en) * 1936-01-25 1937-09-07 Beardsley & Piper Co Flask filling apparatus
US2215559A (en) * 1938-05-02 1940-09-24 Fred P Morgan Irrigation pump
US2286754A (en) * 1934-10-26 1942-06-16 American Foundry Equip Co Abrasive throwing machine
US2295926A (en) * 1938-08-03 1942-09-15 W W Sly Mfg Company Abrasive throwing machine
US2306847A (en) * 1940-06-11 1942-12-29 American Foundry Equip Co Centrifugal abrasive throwing wheel
GB570641A (en) * 1944-01-03 1945-07-16 Austin Sidney Beech Improvements in or relating to foundry moulding machines

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US578509A (en) * 1897-03-09 William henry drayton
US1309833A (en) * 1919-07-15 Molding apparatus
US798699A (en) * 1904-03-28 1905-09-05 Le Roy W Stevens Rotary discharging apparatus.
US1329459A (en) * 1919-05-27 1920-02-03 Emeis R Dunsford Machine for feeding sand to molding-flasks
US1364831A (en) * 1919-11-22 1921-01-04 Donald J Campbell Sand-ramming machine
US1789874A (en) * 1928-10-15 1931-01-20 St Regis Paper Co Yieldable propeller
US2286754A (en) * 1934-10-26 1942-06-16 American Foundry Equip Co Abrasive throwing machine
US2092326A (en) * 1936-01-25 1937-09-07 Beardsley & Piper Co Flask filling apparatus
US2215559A (en) * 1938-05-02 1940-09-24 Fred P Morgan Irrigation pump
US2295926A (en) * 1938-08-03 1942-09-15 W W Sly Mfg Company Abrasive throwing machine
US2306847A (en) * 1940-06-11 1942-12-29 American Foundry Equip Co Centrifugal abrasive throwing wheel
GB570641A (en) * 1944-01-03 1945-07-16 Austin Sidney Beech Improvements in or relating to foundry moulding machines

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2856084A (en) * 1951-05-01 1958-10-14 Blaw Knox Co Granular material handling equipment
DE970938C (de) * 1952-10-16 1958-11-13 Beche & Grohs Ges Mit Beschrae Feilenhaumaschine
US2944308A (en) * 1956-07-12 1960-07-12 Foundry Equipment Ltd Apparatus for filling and ramming foundry flasks
US3095019A (en) * 1960-03-08 1963-06-25 St Regis Paper Co Feed machine for bags
US3178098A (en) * 1962-08-10 1965-04-13 Westinghouse Electric Corp Fluid translating apparatus
US3596384A (en) * 1968-12-09 1971-08-03 Roy E Neujahr Excavation refill packer
US3603696A (en) * 1970-03-12 1971-09-07 Whirlpool Co Dishwasher
USB512547I5 (xx) * 1974-10-07 1976-01-13
US3984193A (en) * 1974-10-07 1976-10-05 General Motors Corporation Radial-flow turbomachine
US4516674A (en) * 1981-07-20 1985-05-14 Donald Firth Method and apparatus for conveying and metering solid material
US4988239A (en) * 1990-03-05 1991-01-29 Stamet, Inc. Multiple-choke apparatus for transporting and metering particulate material
US5051041A (en) * 1990-03-05 1991-09-24 Stamet, Inc. Multiple-choke apparatus for transporting and metering particulate material
US5355993A (en) * 1993-06-11 1994-10-18 Hay Andrew G Grooved disk drive apparatus and method for transporting and metering particulate material
US5485909A (en) * 1993-08-31 1996-01-23 Stamet, Inc. Apparatus with improved inlet and method for transporting and metering particulate material
US5497873A (en) * 1993-12-08 1996-03-12 Stamet, Inc. Apparatus and method employing an inlet extension for transporting and metering fine particulate and powdery material
US6213289B1 (en) 1997-11-24 2001-04-10 Stamet, Incorporation Multiple channel system, apparatus and method for transporting particulate material
US20110133476A1 (en) * 2010-04-29 2011-06-09 Jacob Johannes Nies Rotor support device and method for accessing a drive train of a wind turbine

Also Published As

Publication number Publication date
FR983758A (fr) 1951-06-27
BE488029A (xx) 1949-04-18
ES187581A1 (es) 1949-05-16
NL72767C (xx) 1953-02-16
DE860394C (de) 1952-12-22
CH275871A (de) 1951-06-15

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