US3295667A - Anti-blinding mechanism for screen panels - Google Patents

Anti-blinding mechanism for screen panels Download PDF

Info

Publication number
US3295667A
US3295667A US457372A US45737265A US3295667A US 3295667 A US3295667 A US 3295667A US 457372 A US457372 A US 457372A US 45737265 A US45737265 A US 45737265A US 3295667 A US3295667 A US 3295667A
Authority
US
United States
Prior art keywords
screen
shaft
sleeves
frame
screen panel
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
US457372A
Inventor
Walter R Kittle
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.)
Lukens General Industries Inc
Simplicity Engineering Inc
Original Assignee
Simplicity Engineering Inc
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
Application filed by Simplicity Engineering Inc filed Critical Simplicity Engineering Inc
Priority to US457372A priority Critical patent/US3295667A/en
Application granted granted Critical
Publication of US3295667A publication Critical patent/US3295667A/en
Assigned to LUKENS GENERAL INDUSTRIES, INC.; A CORP OF DE. reassignment LUKENS GENERAL INDUSTRIES, INC.; A CORP OF DE. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: NATIONAL ROLL COMPANY
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
    • B07B13/14—Details or accessories
    • B07B13/16—Feed or discharge arrangements

Definitions

  • One of the prime objects of the invention is to provide simple, practical and efficient means actuated by the gyratory movement of the screen panel for uniformly dislodging all small cucumbers or pickles which may become lodged or wedged between any of the screen bars, and without injury to the cucumbers or pickles being screened.
  • Another object of the invention is to provide antiblinding means immediately beneath the screen panel, and actuated by the concentric motion of the screen for striking and dislodging any pickles lodged between the rods in the screen, causing them to be released and the screen surface cleared for maximum screening capacity.
  • Still a further object is to provide transversely disposed shafts spanning the screen frame directly adjacent the screen bars and provide a plurality of cylindrical impact sleeves loosely mounted on each shaft for gyratory movement as the screen panel is driven.
  • FIG. 1 is a side elevational view of a screen structure and my anti-blinding means, parts being broken away and sectioned to more clearly show the combination.
  • FIG. 2 is a fragmentary top plan view with the screen rods broken away, the gyratory shaft and associated mechanism being omitted.
  • FIG. 3 is an enlarged, fragmentary, sectional view taken on the line 3-3 of FIG. 2.
  • FIG. 4 is an enlarged transverse view sectional through the screen panel.
  • FIG. 5 is a side elevational view of the pickle de-blinding roller.
  • FIG. 6 is an end elevational view thereof.
  • FIG. 7 is a plan view showing one way of connecting the bars and impact sleeves.
  • the letter B indicates a gyrating machine of the general design shown in Patent No. 3,078,890, dated February 23, 1963, wherein is provided a slightly pitched base frame C on which the transversely disposed gyrating mechanism B is mounted, this mechanism including an offset gyrating shaft 8 journaled in bearings 9 mounted on the base frame.
  • Spaced apart connected side plates 10 are mounted on the gyratory member B, and conventional spring mountings 11 are mounted on the base frame C directly adjacent the comers of the machine and are connected to the side plates 10 in any desired manner to permit gyration of said screen frame.
  • a plurality of cushioned cross bars 12 span the side plates 10 and are bolted to brackets 14 provided on the inner face of said side plates, said cross bars being provided with a rubber facing or cap 15, and for a purpose to be presently described.
  • a pickle de-blinding roller assembly E is spaced rearwardly from the cushioned cross bars 12,. and comprises a shaft 16 mounted in bracket arms 17 which are secured to the cross bar 14 by means of bolts 18 or the like, and a plurality of individual cylindrical impact sleeves 19 are loosely mounted on said shaft, the opening in said impact sleeves being of greater diameter than the diameter of the shaft 16 so that said impact sleeves are free to move with an eccentric motion as the gyratory mechanism is driven.
  • the screen panel over which the material flows when the machine is in operation comprises longitudinally, spaced apart, transversely disposed members 20 having a, plurality of longitudinally extending screen rods 21 welded to the upper face thereof, said rods bearing on the upper face of the rubber cushioned cross bars 12, and the impact sleeves are disposed below and out of contact with the under face of the screen rods excepting when the machine is driven, causing the impact sleeves to rotate in an eccentric path of travel, striking any pickles which are wedged in the screen panel, freeing them from such wedged position so that they then continue their progress over the screen panel.
  • I provide inclined shield members 22 which are secured to the side plates 10 with their lower edges bent and disposed over the side edges of the screen panel to eliminate any pickles being wedged between the edges of the screen panel and the side plates 10.
  • the pickle de-binding roller E which, when cut to proper length, forms the impact sleeves
  • this roller is preferably formed of nylon braid reinforcement material which must be both water and swell resistant, it is formed with a centrally disposed shaft accommodating passage 23, and the outer surface is crowned to suit the crown of the screen panel.
  • the roller is measured and cut into a plurality of relatively short impact sleeves which when mounted on the shaft 16, have the same crowned pitch as the screen, so that the entire surface will be accurately spaced from the bottom face of the screen, and it will be noted that said sleeves have limited longitudinal movement with relation to each other.
  • the gyrating mechanism is readily driven, a motor M being mounted on one of the base frame members C, and a belt 24 drivingly connects the motor and gyrating shaft 8 to gyrate the screen panel.
  • the shaft 16 is located behind and below the panel support bars and is supported on the side plates 10 of the machine, and on this shaft 16 is mounted the impact sleeves 19 which can be formed of fabric or rubber. These sleeves are free to move with the eccentric motion of the gyrating shaft, and also have limited transverse movement on said shaft, and the number of sleeves used depends upon the width of the screen panel. No power is applied to the shaft 16, the driving is strictly from the gyratory action of the gyratory mechanism. These cylinders rotate with an eccentric motion on this shaft and strike any pickles lodged in the panel, causing them to be removed from the openings to continue their flow over said panel, and the rubber facing 15 eliminates wear and cushions the product coming into contact therewith.
  • the machine is simple and relatively inexpensive to manufacture and maintain, and the impact rollers eliminate blinding, making for increased production with a minimum of damage to the product being graded, and the anti-blinding means can be easily applied to grading screens now in operation with a minimum of time and expense.
  • An anti-blinding mechanism for screening pickles including a frame, of a pitched screen panel mounted in said frame and gyrated by said gyrating means; screen support bars mounted in said frame; a transversely disposed shaft; a plurality of impact sleeves mounted on said shaft; said sleeves being actuated by gyration of said gyrating means and striking the lower face of the screen panel to release pickles wedged in the screen as the machine is driven.
  • the screen panel comprises longitudinally disposed spaced apart rods, a plurality of transversely spaced bars secured to said longitudinally disposed rods to form a screen, and
  • An anti-blinding mechanism for screening pickles including a frame, of a pitched, transversely crowed screen panel mounted in said frame and gyrated by said gyrating means, screen support bars mounted in said frame, a transversely disposed shaft mounted in said frame a predetermined distance below said screen, tapered impact sleeve sections loosely mounted on said shaft, said sleeve sections being actuated by gyration of said gyratory means and engaging the lower face of the screen panel to release pickles wedged in the screen as the machinery is driven.
  • said sleeves comprise a single elongated moisture-proof member, the outer surface of which is of substantially the same crowned outer surface as the crowned screen, the bore in said moisture-proof member being of greater diameter than the diameter of the transversely disposed shaft to permit contact with products wedged in the screen as the machine is driven, said moisture-proof member being cut to form a plurality of impact sleeves disposed in end to end relation.

Description

W. R. KITTLE Jan. 3, 1967 2 SheetsSheet 1 Filed May 20, 1965 INVENTOR.
HTTOE Jan. 3, 1967 w, KlTTLE 3,295,667
ANTI-BLINDING MECHANISM FOR SCREEN PANELS Filed May 20, 1965 2 Sheets-Sheet 2.
INVENTOR.
Milk.
/) TTORNE Y United States Patent 3,295,667 ANTI-BLINDING MECHANISM FOR SCREEN PANELS Walter R. Kittle, Durand, Mich., assignor to Simplicity Engineering Company, Durand, Mich., a corporation of Michigan Filed May 20, 1965, Ser. No. 457,372 6 Claims. (Cl. 198220) This invention relates to an anti-blinding means operating in conjunction with a panel screen to release any material wedged in the screen, and prevent said screen from clogging with materials being separated or graded.
One of the prime objects of the invention is to provide simple, practical and efficient means actuated by the gyratory movement of the screen panel for uniformly dislodging all small cucumbers or pickles which may become lodged or wedged between any of the screen bars, and without injury to the cucumbers or pickles being screened.
Another object of the invention is to provide antiblinding means immediately beneath the screen panel, and actuated by the concentric motion of the screen for striking and dislodging any pickles lodged between the rods in the screen, causing them to be released and the screen surface cleared for maximum screening capacity.
Still a further object is to provide transversely disposed shafts spanning the screen frame directly adjacent the screen bars and provide a plurality of cylindrical impact sleeves loosely mounted on each shaft for gyratory movement as the screen panel is driven.
With the above and other objects in view, the present invention consists in the combination and arrangement of parts, hereinafter more fully described, illustrated in the accompanying drawings, and more particularly pointed out in the appended claims; it being understood that changes may be made in the form, size, proportion and minor details of construction, without departing from the spirit, or sacrificing any of the advantages of the invention.
In the drawings:
FIG. 1 is a side elevational view of a screen structure and my anti-blinding means, parts being broken away and sectioned to more clearly show the combination.
FIG. 2 is a fragmentary top plan view with the screen rods broken away, the gyratory shaft and associated mechanism being omitted.
FIG. 3 is an enlarged, fragmentary, sectional view taken on the line 3-3 of FIG. 2.
FIG. 4 is an enlarged transverse view sectional through the screen panel.
FIG. 5 is a side elevational view of the pickle de-blinding roller.
FIG. 6 is an end elevational view thereof.
FIG. 7 is a plan view showing one way of connecting the bars and impact sleeves.
Referring now more specifically to the accompanying drawings in which I have shown the preferred embodiment of my invention.
The letter B indicates a gyrating machine of the general design shown in Patent No. 3,078,890, dated February 23, 1963, wherein is provided a slightly pitched base frame C on which the transversely disposed gyrating mechanism B is mounted, this mechanism including an offset gyrating shaft 8 journaled in bearings 9 mounted on the base frame. Spaced apart connected side plates 10 are mounted on the gyratory member B, and conventional spring mountings 11 are mounted on the base frame C directly adjacent the comers of the machine and are connected to the side plates 10 in any desired manner to permit gyration of said screen frame.
3,295,667 Patented Jan. 3, 1967 A plurality of cushioned cross bars 12 span the side plates 10 and are bolted to brackets 14 provided on the inner face of said side plates, said cross bars being provided with a rubber facing or cap 15, and for a purpose to be presently described.
A pickle de-blinding roller assembly E is spaced rearwardly from the cushioned cross bars 12,. and comprises a shaft 16 mounted in bracket arms 17 which are secured to the cross bar 14 by means of bolts 18 or the like, and a plurality of individual cylindrical impact sleeves 19 are loosely mounted on said shaft, the opening in said impact sleeves being of greater diameter than the diameter of the shaft 16 so that said impact sleeves are free to move with an eccentric motion as the gyratory mechanism is driven.
The screen panel over which the material flows when the machine is in operation comprises longitudinally, spaced apart, transversely disposed members 20 having a, plurality of longitudinally extending screen rods 21 welded to the upper face thereof, said rods bearing on the upper face of the rubber cushioned cross bars 12, and the impact sleeves are disposed below and out of contact with the under face of the screen rods excepting when the machine is driven, causing the impact sleeves to rotate in an eccentric path of travel, striking any pickles which are wedged in the screen panel, freeing them from such wedged position so that they then continue their progress over the screen panel.
To eliminate wedging of the pickles between the side edges of the screen panel and the side plates 10, I provide inclined shield members 22 which are secured to the side plates 10 with their lower edges bent and disposed over the side edges of the screen panel to eliminate any pickles being wedged between the edges of the screen panel and the side plates 10.
In FIG. 5 of the drawings, I have shown one way of economically forming the pickle de-binding roller E which, when cut to proper length, forms the impact sleeves, and this roller is preferably formed of nylon braid reinforcement material which must be both water and swell resistant, it is formed with a centrally disposed shaft accommodating passage 23, and the outer surface is crowned to suit the crown of the screen panel. 'After the roller is formed, it is measured and cut into a plurality of relatively short impact sleeves which when mounted on the shaft 16, have the same crowned pitch as the screen, so that the entire surface will be accurately spaced from the bottom face of the screen, and it will be noted that said sleeves have limited longitudinal movement with relation to each other.
The gyrating mechanism is readily driven, a motor M being mounted on one of the base frame members C, and a belt 24 drivingly connects the motor and gyrating shaft 8 to gyrate the screen panel.
It will be noted that the shaft 16 is located behind and below the panel support bars and is supported on the side plates 10 of the machine, and on this shaft 16 is mounted the impact sleeves 19 which can be formed of fabric or rubber. These sleeves are free to move with the eccentric motion of the gyrating shaft, and also have limited transverse movement on said shaft, and the number of sleeves used depends upon the width of the screen panel. No power is applied to the shaft 16, the driving is strictly from the gyratory action of the gyratory mechanism. These cylinders rotate with an eccentric motion on this shaft and strike any pickles lodged in the panel, causing them to be removed from the openings to continue their flow over said panel, and the rubber facing 15 eliminates wear and cushions the product coming into contact therewith.
The machine is simple and relatively inexpensive to manufacture and maintain, and the impact rollers eliminate blinding, making for increased production with a minimum of damage to the product being graded, and the anti-blinding means can be easily applied to grading screens now in operation with a minimum of time and expense.
From the foregoing description, it will be obvious that I have perfected a very simple, practical, and economical panel to eliminate blinding without injury to the products being screened.
I claim:
1. An anti-blinding mechanism for screening pickles, the combination with a driven gyrating means including a frame, of a pitched screen panel mounted in said frame and gyrated by said gyrating means; screen support bars mounted in said frame; a transversely disposed shaft; a plurality of impact sleeves mounted on said shaft; said sleeves being actuated by gyration of said gyrating means and striking the lower face of the screen panel to release pickles wedged in the screen as the machine is driven.
2. The combination defined in claim 1 in which said screen support bars are provided with a resilient upper surface for engagement with the under side of said screen panel.
3. The combination set forth in claim 1 in which said screen panel is transversely crowned and the outer surface of the impact sleeves carried by said bars, when in assembled relation, has substantially the same crown pitch as the screen panel.
4. The combination defined in claim 1 in which the screen panel comprises longitudinally disposed spaced apart rods, a plurality of transversely spaced bars secured to said longitudinally disposed rods to form a screen, and
' means disposed below and rearwardly of said bars for engaging the lower face of the screen to dislodge products wedged in said screen as the mechanism is driven.
5. An anti-blinding mechanism for screening pickles, the combination with a driven gyrating means including a frame, of a pitched, transversely crowed screen panel mounted in said frame and gyrated by said gyrating means, screen support bars mounted in said frame, a transversely disposed shaft mounted in said frame a predetermined distance below said screen, tapered impact sleeve sections loosely mounted on said shaft, said sleeve sections being actuated by gyration of said gyratory means and engaging the lower face of the screen panel to release pickles wedged in the screen as the machinery is driven.
6. The combination set forth in claim 5 in which said sleeves comprise a single elongated moisture-proof member, the outer surface of which is of substantially the same crowned outer surface as the crowned screen, the bore in said moisture-proof member being of greater diameter than the diameter of the transversely disposed shaft to permit contact with products wedged in the screen as the machine is driven, said moisture-proof member being cut to form a plurality of impact sleeves disposed in end to end relation.
References Cited by the Examiner UNITED STATES PATENTS 2,122,200 6/1938 Fourment 198-219 2,184,915 12/1939 Gray 198-219 M. HENSON WOOD, JR., Primary Examiner.
R. A. SCHACHER, Assistant Examiner.

Claims (1)

1. AN ANTI-BLINDING MECHANISM FOR SCREENING PICKLES, THE COMBINATION WITH A DRIVEN GYRATING MEANS INCLUDING A FRAME, OF A PITCHED SCREEN PANEL MOUNTED IN SAID FRAME AND GYRATED BY SAID GYRATING MEANS; SCREEN SUPPORT BARS MOUNTED IN SAID FRAME; A TRANSVERSELY DISPOSED SHAFT; A PLURALITY OF IMPACT SLEEVES MOUNTED ON SAID SHAFT; SAID SLEEVES BEING ACTUATED BY GYRATION OF SAID GYRATING MEANS AND STRIKING THE LOWER FACE OF THE SCREEN PANEL TO RELEASE PICKLES WEDGED IN THE SCREEN AS THE MACHINE IS DRIVEN.
US457372A 1965-05-20 1965-05-20 Anti-blinding mechanism for screen panels Expired - Lifetime US3295667A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US457372A US3295667A (en) 1965-05-20 1965-05-20 Anti-blinding mechanism for screen panels

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US457372A US3295667A (en) 1965-05-20 1965-05-20 Anti-blinding mechanism for screen panels

Publications (1)

Publication Number Publication Date
US3295667A true US3295667A (en) 1967-01-03

Family

ID=23816462

Family Applications (1)

Application Number Title Priority Date Filing Date
US457372A Expired - Lifetime US3295667A (en) 1965-05-20 1965-05-20 Anti-blinding mechanism for screen panels

Country Status (1)

Country Link
US (1) US3295667A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3464609A (en) * 1967-05-19 1969-09-02 L S Heath & Sons Inc Vibratory candy breaker and separator
US3770097A (en) * 1972-02-29 1973-11-06 Gen Kinematics Corp Vibratory conveyor with sound deadening means
US3927678A (en) * 1974-05-02 1975-12-23 Sperry Rand Corp Concave for an axial flow threshing and separating machine
FR2451783A1 (en) * 1979-03-22 1980-10-17 Fugagnoli Jean Paul Sorting, cleaning and size grading mussels and oysters etc. - by machine with elevator, brushes rakes and vibratory grills
FR2481616A1 (en) * 1980-05-05 1981-11-06 Litton Systems Inc MECHANISM FOR DECRASSING A SCREENING TABLE AND VIBRANT SCREW COMPRISING SUCH A MECHANISM
US4344712A (en) * 1980-08-25 1982-08-17 The Regents Of The University Of California Culture processing apparatus and method
US4763776A (en) * 1984-08-24 1988-08-16 Canon Kabushiki Kaisha Method and apparatus for transporting an article
US4776267A (en) * 1987-03-25 1988-10-11 Harris James I Apparatus for irradiating foodstuffs with ultraviolet rays
US5544487A (en) * 1991-01-15 1996-08-13 Hydrocool Pty Ltd Thermoelectric heat pump w/hot & cold liquid heat exchange circutis
US20070101750A1 (en) * 2005-11-09 2007-05-10 Pham Hung M Refrigeration system including thermoelectric module
US20070101740A1 (en) * 2005-11-09 2007-05-10 Masao Akei Vapor compression circuit and method including a thermoelectric device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2122200A (en) * 1933-03-10 1938-06-28 Fourment Marcel Apparatus for conveying objects treated in continuously operating furnaces
US2184915A (en) * 1937-06-08 1939-12-26 Corning Glass Works Conveyer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2122200A (en) * 1933-03-10 1938-06-28 Fourment Marcel Apparatus for conveying objects treated in continuously operating furnaces
US2184915A (en) * 1937-06-08 1939-12-26 Corning Glass Works Conveyer

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3464609A (en) * 1967-05-19 1969-09-02 L S Heath & Sons Inc Vibratory candy breaker and separator
US3770097A (en) * 1972-02-29 1973-11-06 Gen Kinematics Corp Vibratory conveyor with sound deadening means
US3927678A (en) * 1974-05-02 1975-12-23 Sperry Rand Corp Concave for an axial flow threshing and separating machine
FR2451783A1 (en) * 1979-03-22 1980-10-17 Fugagnoli Jean Paul Sorting, cleaning and size grading mussels and oysters etc. - by machine with elevator, brushes rakes and vibratory grills
FR2481616A1 (en) * 1980-05-05 1981-11-06 Litton Systems Inc MECHANISM FOR DECRASSING A SCREENING TABLE AND VIBRANT SCREW COMPRISING SUCH A MECHANISM
US4344712A (en) * 1980-08-25 1982-08-17 The Regents Of The University Of California Culture processing apparatus and method
US4763776A (en) * 1984-08-24 1988-08-16 Canon Kabushiki Kaisha Method and apparatus for transporting an article
US4776267A (en) * 1987-03-25 1988-10-11 Harris James I Apparatus for irradiating foodstuffs with ultraviolet rays
US5544487A (en) * 1991-01-15 1996-08-13 Hydrocool Pty Ltd Thermoelectric heat pump w/hot & cold liquid heat exchange circutis
US20070101750A1 (en) * 2005-11-09 2007-05-10 Pham Hung M Refrigeration system including thermoelectric module
US20070101748A1 (en) * 2005-11-09 2007-05-10 Pham Hung M Refrigeration system including thermoelectric module
US20070101740A1 (en) * 2005-11-09 2007-05-10 Masao Akei Vapor compression circuit and method including a thermoelectric device
US20070101739A1 (en) * 2005-11-09 2007-05-10 Masao Akei Vapor compression circuit and method including a thermoelectric device
US20070101749A1 (en) * 2005-11-09 2007-05-10 Pham Hung M Refrigeration system including thermoelectric module
US20070101738A1 (en) * 2005-11-09 2007-05-10 Masao Akei Vapor compression circuit and method including a thermoelectric device
US20070101737A1 (en) * 2005-11-09 2007-05-10 Masao Akei Refrigeration system including thermoelectric heat recovery and actuation
US7278269B2 (en) 2005-11-09 2007-10-09 Emerson Climate Technologies, Inc. Refrigeration system including thermoelectric module
US7284379B2 (en) 2005-11-09 2007-10-23 Emerson Climate Technologies, Inc. Refrigeration system including thermoelectric module
US7310953B2 (en) 2005-11-09 2007-12-25 Emerson Climate Technologies, Inc. Refrigeration system including thermoelectric module
US7752852B2 (en) 2005-11-09 2010-07-13 Emerson Climate Technologies, Inc. Vapor compression circuit and method including a thermoelectric device
US20110120145A1 (en) * 2005-11-09 2011-05-26 Masao Akei Vapor Compression Circuit and Method Including A Thermoelectric Device
US8307663B2 (en) 2005-11-09 2012-11-13 Emerson Climate Technologies, Inc. Vapor compression circuit and method including a thermoelectric device

Similar Documents

Publication Publication Date Title
US3295667A (en) Anti-blinding mechanism for screen panels
US417836A (en) Grain scalper and grader
US2386579A (en) Grading machine
US440301A (en) Machine for separating flour
US2187273A (en) Hammer screen
US1553693A (en) Screen for rock crushers
US800693A (en) Shaking-screen.
US891424A (en) Separator.
US1114097A (en) Vibrating screen or separator.
US1179842A (en) Apparatus for washing and sizing.
US721421A (en) Bean-separator.
US507971A (en) Method of and apparatus for bolting flour
US782283A (en) Separator-screen.
US2061179A (en) Apparatus for treating materials
US455601A (en) Separator for coal or other substances
US377667A (en) Machine for cleaning and separating cranberries
DE120942C (en)
US546891A (en) Screening apparatus
US317782A (en) Grain-separator
US1049052A (en) Screen or separator.
US479742A (en) Conveyer and screen
SU1533758A1 (en) Crusher-screen
DE190553C (en)
US902658A (en) Smut-machine.
US438287A (en) Flour-bolt

Legal Events

Date Code Title Description
AS Assignment

Owner name: LUKENS GENERAL INDUSTRIES, INC.; A CORP OF DE.

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:NATIONAL ROLL COMPANY;REEL/FRAME:004124/0674

Effective date: 19830414