US3903652A - Continuous cleaning apparatus - Google Patents

Continuous cleaning apparatus Download PDF

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Publication number
US3903652A
US3903652A US553183A US55318366A US3903652A US 3903652 A US3903652 A US 3903652A US 553183 A US553183 A US 553183A US 55318366 A US55318366 A US 55318366A US 3903652 A US3903652 A US 3903652A
Authority
US
United States
Prior art keywords
barrel
work pieces
set forth
rotating
rotation
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
US553183A
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English (en)
Inventor
Davis L Baughman
Jr James H Carpenter
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.)
Pangborn Corp
Original Assignee
Carborundum Co
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 Carborundum Co filed Critical Carborundum Co
Priority to US553183A priority Critical patent/US3903652A/en
Priority to US00592799A priority patent/US3852919A/en
Priority to CA988,299A priority patent/CA1085170A/en
Priority to GB18196/67A priority patent/GB1158277A/en
Priority to DE19671652262 priority patent/DE1652262B2/de
Application granted granted Critical
Publication of US3903652A publication Critical patent/US3903652A/en
Assigned to KENNECOTT CORPORATION reassignment KENNECOTT CORPORATION MERGER (SEE DOCUMENT FOR DETAILS). EFFECTIVE DEC. 31, 1980 NORTH DAKOTA Assignors: BEAR CREEK MINING COMPANY, BEAR TOOTH MINING COMPANY, CARBORUNDUM COMPANY THE, CHASE BRASS & COPPER CO. INCORPORATED, KENNECOTT EXPLORATION, INC., KENNECOTT REFINING CORPORATION, KENNECOTT SALES CORPORATION, OZARK LEAD COMPANY, PLAMBEAU MINING CORPORATION, RIDGE MINING CORPORATION (ALL MERGED INTO)
Assigned to NATIONAL WESTMINSTER BANK USA, A NATIONAL BANKING ASSOCIATION reassignment NATIONAL WESTMINSTER BANK USA, A NATIONAL BANKING ASSOCIATION SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PANGBORN CORPORATION, A CORP. OF DE.
Assigned to PANGBORN CORPORATION reassignment PANGBORN CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: KENNECOTT CORPORATION
Assigned to MERRILL LYNCH INTERFUNDING INC. reassignment MERRILL LYNCH INTERFUNDING INC. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PANGBORN CORPORATION
Anticipated expiration legal-status Critical
Assigned to HELLER FINANCIAL, INC., AS AGENT reassignment HELLER FINANCIAL, INC., AS AGENT SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PANGBORN CORPORATION
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
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/08—Abrasive blasting machines or devices; Plants essentially adapted for abrasive blasting of travelling stock or travelling workpieces
    • B24C3/085—Abrasive blasting machines or devices; Plants essentially adapted for abrasive blasting of travelling stock or travelling workpieces the travelling workpieces being moved into different working positions during travelling

Definitions

  • PATENTED SEP 9 I975 SHEET 1 or 4 HITED QED 91975 sum 2 BF 4 L Willi PATENTEU SEP 9 975 sum 3 or 4 PATENTED SEP 9 I975 sum u 0F 4 CONTINUOUS CLEANING APPARATUS This invention relates to an apparatus which is particularly suitable for cleaning large batehesof parts or continuously fed parts such as automobile heads, manifolds, etc.
  • An object of this invention is to provide an apparatus capable of fulfilling all of the aforementioned ideal conditions.
  • a further object is to provide such an apparatus which is more adaptable to automatic loading and unloading than a conventional monorail type machine.
  • the work pieces are fed in a lineal direction along the axis of a barrel which is open at both ends.
  • the barrel is slotted or otherwise incorporates openings to permit blast wheels to project the blast streams against the axially movable work pieces.
  • the barrel is provided with a positive rotational control whereby the work pieces may be disposed in the most advantageous position to maximize the effectiveness of the blast streams.
  • FIG. I is a side view of one embodiment of this invention.
  • FIG. 2 is a top view of the embodiment shown in FIG.
  • FIG. 3 is an end view of the embodiment shown in FIGS. 1 and 2;
  • FIG. 4 is a view in the direction of lines 44 of FIG.
  • FIGS. 5 and 6 are views in the direction of the lines 5-5 and 6-6 respectively of FIG. 4;
  • FIG. 7 is a view in the direction of the lines 7-7 of FIG. 5;
  • FIG. 8 is a view similar to FIG. 6 of a modified form of this invention.
  • FIG. 9 is a view in the direction of the lines 99 of FIG. 4;
  • FIGS. 10 and 11 are schematic views of alternate hydraulic systems used in this invention.
  • FIGS. 12-15 are perspectives of alternate arrangements for the work pieces in accordance with this invention.
  • the work pieces 10 are fed by automatic feed means such as conveyors 12 to the open feed end of rotatable barrel 14.
  • the parts are pushed into the end of barrel 14 by for example, an air or hydraulic cylinder 16.
  • One part pushes against the preceding part.
  • All of the parts 10 in the barrel l4 axially advance one part length each time a new part 10 is inserted.
  • a cleaned part is discharged from the opposite end of barrel 14.
  • kick-out roller 17 As indicated in FIG. 4, a positive discharge of the part is attained by kick-out roller 17.
  • the cleaned parts are then conveyed for example on conveyor 18.
  • a second piston cylinder assembly 20 moves each part onto oscillator conveyor 22 for facilitating the removal of spent abrasive so that the abrasive can later be reused by being conveyed to storage bin 24 (FIG. 1). The parts are then removed from the cleaning area by conveyor 26.
  • barrel 14 While the parts are being advanced one part length, barrel 14 is not rotating. As soon as the advance is completed the barrel 14 makes one or more revolutions and then stops for the next advance stroke. With parts that are circular or nearly circular in shape, the barrel [4 may continue rotating during the forward advance stroke.
  • the blast wheels 28 are located in a position to hit the most critical cleaning area. For example with intake manifolds the blast is directed into the ports during this forward advance.
  • the barrel rotation can be varied to give a different rate of rotation within a revolution. This can be done effectively by using a cam operated control system (FIGS. 4, l0, and II) which utilizes a cam operated valve 30 to control the hydraulic rotating actuator.
  • a cam operated control system FIGS. 4, l0, and II
  • parts 10 are shaped on their ends in such a way that the ends can be cleaned during the above described treatment. If, however, space is needed between parts for end cleaning, it can be obtained by casting lugs 32 onto casting as shown in FIG. I2. Alternatively ball spheres 34 may be inserted between parts 10, 10 as shown in FIG. 14. A further possibility is shown in FIG. 13 which involves utilizing a nozzle 36 or other blast means to blast the ends of parts 10 before they enter the cleaning cabinet 38 which houses barrel 14.
  • FIG. 15 shows an arrangement for parts that have ends which are flat or irregular and will not push each other if placed in the barrel in a horizontal position.
  • FIG. 8 shows the cross shaped basket or barrel for accommodating these alternately disposed work pieces.
  • the aforedescribed invention meets all of the desirable conditions previously indicated.
  • the blast wheels 28 are located to blast along the axial center line and the work travels along the same center line.
  • all of the blast hits the work.
  • the head and tail stream are fully utilized.
  • the work is rotated in each stop position (or continually) thereby presenting all surfaces to the blast.
  • the work pieces are close together frequently within one-half inch of each other. This results in no lost blast through gaps between the work.
  • the rotation can also be varied to apply optimum blast to hard to clean areas.
  • the above described arrangement has other advantages. For example automatic loading and unloading is simplified. With this arrangement the barrel 14 is always in a predetermined position when the parts are inserted and are ejected. This is advantageous because the parts can be fed to the machine by a conveyor 12 or other convenient means. This feeding is done with the part oriented as required by a previous operation. Likewise the parts are also oriented at ejection. This gives an inline flow of parts with the parts always being oriented in a given position for subsequent easy handling.
  • barrel 14 may best be understood by reference to FIGS. 4-8.
  • the barrel 14 comprises a removable unit which includes a replaceable ring gear 40 at both the feed end and the discharge end thereof.
  • a replaceable tire 42 is mounted adjacent each ring gear 40 and in a central portion thereof. The tires 42 ride upon rollers 44. In this manner the entire unit can be raised and lowered into position by a hoist.
  • the barrel always assumes the correct position by the seating of tires 42 upon rollers 44 with the ring gears 40 meshing with pinions 46.
  • the barrel body itself is slotted to permit blasting therethrough, and each barrel is given the desired crosssectional configuration for the specific work piece.
  • FIG. 4 shows the drive means for rotating pinions 46.
  • This drive means includes the rotary actuator 54 which includes a piston cylinder arrangement 56 for oscillating shaft 58 upon which cams 30 are mounted.
  • the teeth on piston cylinder arrangement 56 mesh, for example, with suitable gearing (not shown) to rotate gear 57 which in turn rotates worm 59 and its shaft 58.
  • Cams 30 contact valves 60 which feed the hydraulic fluid to piston cylinder arrangement 56 to thereby control the speed or rate of rotation of shaft 58.
  • a chain and sprocket drive 62 is mounted at each end of shaft 58 to drive pinions 46 (FIG. 5) and in turn rotate barrel 14.
  • FIG. 10 shows a hydraulic system for operating rotary actuator 54 wherein the variable rotation is attained in both ways.
  • the fluid is supplied by source 64 through valve 60 and thence through piston cylinder arrangement 56.
  • the same system provides the hydraulic means for driving piston cylinder assemblies 16 and 20 which are shown in FIG. 2.
  • FIG. I shows a more sophisticated hydraulic system which gives two variable rotations.
  • This system includes a pair of valves 60 and is otherwise generally the same as the system shown in FIG. 10.
  • FIG. 9 indicates the advantageous shape of roller 17 which includes tapered flanges 68 to provide a convenient cradle like seat for any shaped work piece such as work piece 10A.
  • a continuous treating apparatus for rapidly cleaning a succession of work pieces comprising a barrel of skeletal wall construction open at both ends and having a length that permits the longitudinal passage of a single line of work pieces therethrough, rotating means for rotating said barrel about its longitudinal axis, said barrel being long enough to hold a multiplicity of the work pieces at one time and its walls being shaped to directly engage the work pieces and keep them from rotating with respect to the barrel, abrasive throwing wheel means positioned alongside the barrel for projecting abrasive particles through the skeletal barrel wall at the work pieces in the barrel, endless conveyor structure connected to carry a succession of work pieces from a lateral direction to one end of the barrel, and pusher means at said barrel end and connected to push the successive work pieces longitudinally part way through the barrel as they arrive at that barrel end and cause each work piece to push other pieces ahead of it through the barrel.
  • said abrasive throwing wheel means comprises a single multiple blast station having a plurality of blast wheels disposed to blast at an axial center line of said barrel.
  • An apparatus as set forth in claim 1 including spacing means in said barrel for spacing work pieces from each other.
  • said barrel includes a removable unit, said removable unit including a pair of circular ends, a ring gear on at least one of said ends, said rotating means including a drive gear engaged with said ring gear, a central circular support member between said circular ends, support plates in each of said circular member and said circular ends, and guide bars bridging said support plate for forming a non-circular path of flow for the work pieces.
  • abrasive throwing wheel means includes a plurality of throwing wheels disposed at different locations with respect to the circumferential periphery of said barrel for projecting abrasive particles into said barrel from different radial directions.
  • a continuous treating apparatus comprising a barrel, said barrel being open at both ends for allowing an axial flow of work pieces therethrough, said barrel having peripheral openings, treating means for projecting treating media through said openings, feed means at one open end of said barrel for supplying work pieces one at a time into said one open end of said barrel and for moving the work pieces through said barrel, discharge means at the other open end of said barrel for receiving the work pieces one at a time from said barrel, rotating means for rotating said barrel and work pieces therein about a longitudinal axis, and means for holding the work piece against substantial rotation with respect to the rotation of said barrel about said longitudinal axis for providing a positive control of the disposition of the work pieces as they flow through said barrel, said discharge means including conveyor means for transporting the work pieces away from said barrel, a kick-out roller for discharging the work pieces from said barrel onto said conveyor means, means for vertically adjusting said kick-out roller, and said kick-out roller including convergent flanges for receiving the work pieces as they exit from said barrel.
  • said discharge means includes a piston-cylinder assembly for moving the work pieces, said feed means including a second piston-cylinder assembly for feeding the work pieces into said barrel, said rotary actuator including a third piston-cylinder assembly, and all of said pistoncylinder assemblies being hydraulically connected to each other.
  • Apparatus for blast cleaning a succession of work pieces comprising: an elongate barrel having an open feed end and an open exit end and being of skeletal wall construction and long enough to contain and support a plurality of work pieces therein at one time, said barrel having a longitudinal axis; support means mounting said barrel for rotation about said longitudinal axis for causing said barrel and any work pieces contained therein to rotate relative to said support means; particle throwing means positioned outside of and adjacent to said barrel for projecting particles of cleaning media through the skeletal wall construction of said barrel to the interior thereof; means for bringing a succession of work pieces adjacent said open feed end; and pusher means located adjacent said open feed end for pushing successive work pieces into said barrel and simultaneously transmitting a pushing force through work pieces within said barrel to cause successive work pieces at said exit end to move out of said barrel.
  • Apparatus as defined in claim 15 wherein said means for rotating said barrel includes means for varying the rate of rotation of said barrel.
  • Apparatus as defined in claim 15 including means for actuating said pusher means during rotation of said barrel.
  • said pusher means comprises a piston and cylinder assembly mounted exteriorly of said barrel, and said means for bringing a succession of work pieces adjacent said open feed end being comprised of a conveyor disposed adjacent to and below said open feed end.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Cleaning In General (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
US553183A 1966-05-26 1966-05-26 Continuous cleaning apparatus Expired - Lifetime US3903652A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US553183A US3903652A (en) 1966-05-26 1966-05-26 Continuous cleaning apparatus
US00592799A US3852919A (en) 1966-05-26 1966-11-08 Continuous cleaning apparatus
CA988,299A CA1085170A (en) 1966-05-26 1967-04-19 Continuous cleaning apparatus
GB18196/67A GB1158277A (en) 1966-05-26 1967-04-20 Continuous Cleaning Apparatus.
DE19671652262 DE1652262B2 (de) 1966-05-26 1967-05-20 Schleuderstrahlanlage zum reinigen von profilierten werkstuecken

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US553183A US3903652A (en) 1966-05-26 1966-05-26 Continuous cleaning apparatus

Publications (1)

Publication Number Publication Date
US3903652A true US3903652A (en) 1975-09-09

Family

ID=24208438

Family Applications (1)

Application Number Title Priority Date Filing Date
US553183A Expired - Lifetime US3903652A (en) 1966-05-26 1966-05-26 Continuous cleaning apparatus

Country Status (4)

Country Link
US (1) US3903652A (enrdf_load_stackoverflow)
CA (1) CA1085170A (enrdf_load_stackoverflow)
DE (1) DE1652262B2 (enrdf_load_stackoverflow)
GB (1) GB1158277A (enrdf_load_stackoverflow)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4253520A (en) * 1978-10-26 1981-03-03 The Garrett Corporation Heat exchanger construction
FR2531894A1 (fr) * 1982-06-25 1984-02-24 Kennecott Corp Appareil et procede de nettoyage et d'avance de pieces
US4599879A (en) * 1985-01-09 1986-07-15 Rockwell International Corporation Conveyor system for a shot peening machine
US4680898A (en) * 1984-04-20 1987-07-21 Carpenter Jr James H Method and apparatus for cleaning workpieces
US5163253A (en) * 1984-04-20 1992-11-17 Pangborn Corporation Method and apparatus for cleaning workpieces
US6421903B2 (en) 1998-09-14 2002-07-23 Albert W. Brown Continuously variable transmission and method of transferring loads in the same
US6478662B1 (en) * 1999-08-31 2002-11-12 Charles J. Krejcik Descaler/finisher for elongated or continuous stock materials
US20030153426A1 (en) * 1998-09-14 2003-08-14 Brown Albert W. Dual drive continuously variable transmission
US20060154760A1 (en) * 2005-01-11 2006-07-13 Brown Albert W In-series two chain continuously variable transmission
US20060154761A1 (en) * 2005-01-11 2006-07-13 Brown Albert W Single chain continuously variable transmission
CN109176321A (zh) * 2018-10-29 2019-01-11 苏州天顺新能源科技有限公司 喷砂设备、喷砂系统及喷砂方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3626641A (en) * 1969-08-13 1971-12-14 Carborundum Co Continuous cleaning apparatus
DE3004251A1 (de) * 1980-02-06 1981-08-13 Wheelabrator Berger Maschinenfabriken GmbH & Co KG, 5060 Bergisch Gladbach Foerdervorrichtung mit einem drehkorb zur aufnahme und zum transport von werkstuecken durch den strahlbereich von strahleinrichtungen
DE4003889A1 (de) * 1990-02-09 1991-08-14 Herbert Lacker Einrichtung zur mechanischen bearbeitung von oberflaechen

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US763268A (en) * 1904-03-24 1904-06-21 James M Edwards Conveyer.
US1836272A (en) * 1927-11-16 1931-12-15 Harry A Mulvany Method and apparatus for projecting comminuted materials
US2131769A (en) * 1936-08-21 1938-10-04 American Foundry Equip Co Apparatus for treating metal articles
US2154843A (en) * 1936-03-21 1939-04-18 American Foundry Equip Co Abrading apparatus
US2154879A (en) * 1936-07-14 1939-04-18 American Foundry Equip Co Apparatus for treating metal articles
US2204636A (en) * 1938-09-24 1940-06-18 American Foundry Equip Co Apparatus for treating metal articles
US2441578A (en) * 1946-07-22 1948-05-18 Pangborn Corp Continuous blast cleaning barrel
US2565341A (en) * 1950-06-26 1951-08-21 Victor C Arispe Sandblast apparatus
US2918071A (en) * 1954-12-20 1959-12-22 Ajem Lab Inc Article washing apparatus
US3167885A (en) * 1961-10-26 1965-02-02 Wheelabrator Corp Apparatus for surface treatment of metal coils
US3387410A (en) * 1966-11-18 1968-06-11 Pangborn Corp Continuous cleaning apparatus
US3517465A (en) * 1966-05-19 1970-06-30 Wheelabrator Corp Method and means for continuous surface treatment

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US763268A (en) * 1904-03-24 1904-06-21 James M Edwards Conveyer.
US1836272A (en) * 1927-11-16 1931-12-15 Harry A Mulvany Method and apparatus for projecting comminuted materials
US2154843A (en) * 1936-03-21 1939-04-18 American Foundry Equip Co Abrading apparatus
US2154879A (en) * 1936-07-14 1939-04-18 American Foundry Equip Co Apparatus for treating metal articles
US2131769A (en) * 1936-08-21 1938-10-04 American Foundry Equip Co Apparatus for treating metal articles
US2204636A (en) * 1938-09-24 1940-06-18 American Foundry Equip Co Apparatus for treating metal articles
US2441578A (en) * 1946-07-22 1948-05-18 Pangborn Corp Continuous blast cleaning barrel
US2565341A (en) * 1950-06-26 1951-08-21 Victor C Arispe Sandblast apparatus
US2918071A (en) * 1954-12-20 1959-12-22 Ajem Lab Inc Article washing apparatus
US3167885A (en) * 1961-10-26 1965-02-02 Wheelabrator Corp Apparatus for surface treatment of metal coils
US3517465A (en) * 1966-05-19 1970-06-30 Wheelabrator Corp Method and means for continuous surface treatment
US3387410A (en) * 1966-11-18 1968-06-11 Pangborn Corp Continuous cleaning apparatus

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4253520A (en) * 1978-10-26 1981-03-03 The Garrett Corporation Heat exchanger construction
FR2531894A1 (fr) * 1982-06-25 1984-02-24 Kennecott Corp Appareil et procede de nettoyage et d'avance de pieces
US4680898A (en) * 1984-04-20 1987-07-21 Carpenter Jr James H Method and apparatus for cleaning workpieces
US5163253A (en) * 1984-04-20 1992-11-17 Pangborn Corporation Method and apparatus for cleaning workpieces
US4599879A (en) * 1985-01-09 1986-07-15 Rockwell International Corporation Conveyor system for a shot peening machine
US6926632B2 (en) 1998-09-14 2005-08-09 Albert W. Brown Dual drive continuously variable transmission
US6421903B2 (en) 1998-09-14 2002-07-23 Albert W. Brown Continuously variable transmission and method of transferring loads in the same
US20030153426A1 (en) * 1998-09-14 2003-08-14 Brown Albert W. Dual drive continuously variable transmission
US6478662B1 (en) * 1999-08-31 2002-11-12 Charles J. Krejcik Descaler/finisher for elongated or continuous stock materials
US20060154760A1 (en) * 2005-01-11 2006-07-13 Brown Albert W In-series two chain continuously variable transmission
US20060154761A1 (en) * 2005-01-11 2006-07-13 Brown Albert W Single chain continuously variable transmission
US7540815B2 (en) 2005-01-11 2009-06-02 Brown Albert W In-series two chain continuously variable transmission
US20090239690A1 (en) * 2005-01-11 2009-09-24 Brown Albert W In-series two chain continuously variable transmission
CN109176321A (zh) * 2018-10-29 2019-01-11 苏州天顺新能源科技有限公司 喷砂设备、喷砂系统及喷砂方法

Also Published As

Publication number Publication date
DE1652262A1 (de) 1970-04-09
DE1652262B2 (de) 1973-03-01
CA1085170A (en) 1980-09-09
GB1158277A (en) 1969-07-16

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Legal Events

Date Code Title Description
AS Assignment

Owner name: KENNECOTT CORPORATION

Free format text: MERGER;ASSIGNORS:BEAR CREEK MINING COMPANY;BEAR TOOTH MINING COMPANY;CARBORUNDUM COMPANY THE;AND OTHERS;REEL/FRAME:003961/0672

Effective date: 19801230

AS Assignment

Owner name: NATIONAL WESTMINSTER BANK USA, 592 FIFTH AVENUE, N

Free format text: SECURITY INTEREST;ASSIGNOR:PANGBORN CORPORATION, A CORP. OF DE.;REEL/FRAME:004576/0188

Effective date: 19860724

AS Assignment

Owner name: PANGBORN CORPORATION, PANGBORN BLVD., HAGERSTOWN,

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:KENNECOTT CORPORATION;REEL/FRAME:004614/0421

Effective date: 19860725

AS Assignment

Owner name: MERRILL LYNCH INTERFUNDING INC., NEW YORK

Free format text: SECURITY INTEREST;ASSIGNOR:PANGBORN CORPORATION;REEL/FRAME:005237/0297

Effective date: 19891211

AS Assignment

Owner name: HELLER FINANCIAL, INC., AS AGENT, ILLINOIS

Free format text: SECURITY INTEREST;ASSIGNOR:PANGBORN CORPORATION;REEL/FRAME:008861/0226

Effective date: 19971209