US3831530A - Railway car center bearing assembly - Google Patents

Railway car center bearing assembly Download PDF

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Publication number
US3831530A
US3831530A US00298965A US29896572A US3831530A US 3831530 A US3831530 A US 3831530A US 00298965 A US00298965 A US 00298965A US 29896572 A US29896572 A US 29896572A US 3831530 A US3831530 A US 3831530A
Authority
US
United States
Prior art keywords
center plate
center
filler
assembly according
truck
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
US00298965A
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English (en)
Inventor
G Cope
L Smith
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.)
Amsted Industries Inc
Original Assignee
Dresser Industries 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 Dresser Industries Inc filed Critical Dresser Industries Inc
Priority to US00298965A priority Critical patent/US3831530A/en
Priority to ZA737568*A priority patent/ZA737568B/xx
Priority to IT52871/73A priority patent/IT994362B/it
Priority to NL7313792A priority patent/NL7313792A/xx
Priority to AU61183/73A priority patent/AU6118373A/en
Priority to BE136581A priority patent/BE805954A/xx
Priority to FR7337030A priority patent/FR2203733B3/fr
Priority to BR8164/73A priority patent/BR7308164D0/pt
Priority to DE19732352549 priority patent/DE2352549A1/de
Priority to JP48117004A priority patent/JPS4972815A/ja
Application granted granted Critical
Publication of US3831530A publication Critical patent/US3831530A/en
Assigned to FIRST NATIONAL BANK OF CHICAGO, THE reassignment FIRST NATIONAL BANK OF CHICAGO, THE SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: AMSTED INDUSTRIES INCORPORATED
Assigned to AMSTED INDUSTRIES, INC., A CORP. OF DE. reassignment AMSTED INDUSTRIES, INC., A CORP. OF DE. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: DRESSER INDUSTRIES, INC., A CORP OF DE.
Assigned to AMSTED INDUSTRIES INCORPORATED, A CORP. OF DE. reassignment AMSTED INDUSTRIES INCORPORATED, A CORP. OF DE. RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: FIRST NATIONAL BANK OF CHICAGO, AS AGENT
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
    • B61F5/02—Arrangements permitting limited transverse relative movements between vehicle underframe or bolster and bogie; Connections between underframes and bogies
    • B61F5/16—Centre bearings or other swivel connections between underframes and bolsters or bogies

Definitions

  • Field of Search 105/199 c 200 226- n p 0 can a 3O8/136 body center plate and a truck bolster center plate bowl of the railway car, the bearing surfaces of the center filler having a hardness greater than the bearing [56] References cued surface of the truck center plate bowl and no less than UNITED STATES PATENTS the liardness o; the bilcly center plate to pjroluce a 403,560 5/1889 Schoen 308/137 very ow rateo wear.
  • center plates under these conditions have been generally characterized by reduced life expectancies on the order of l to 2 years, rendering maintenance and car down time costs unduly excessive if not prohibitive. From the standpoint of minimizing down time and repair costs, it is desirable to provide regularly detachable center fillers which may be utilized in an initial installation or as a replacement and which may be readily attached to the existing body bolster-center sill structure, and which is rugged enough to produce a repair assembly having a significant life expectancy for the existing load conditions.
  • Another object of this invention is to provide a center plate assembly that may be utilized to replace existing center plate components on preexisting center sill-body bolster and truck bolster assemblies.
  • a further object of the invention is to provide a two piece hardened detached center plate filler that will permit the rotational movement of the truck action to be limited to the flat hard surfaces between the two halves.
  • An additional object is to provide a one-piece center plate filler designed to cause the rotational movement of the truck action to be limited to the top surface thereof and the lower bearing surface of the body bolster center plate.
  • a still further object of the invention is to provide a novel center plate assembly designed to resist eccentric forces due to impact and lateral parallelograming forces normally sustained to a larger extent by other structural components.
  • FIG. 1 is an elevation view in partial cross section of a center plate assembly according to one embodiment of the present invention
  • FIG. 2 is a top plan view of a body center plate
  • FIG. 3 is a fragmentary elevation view in cross section of a center plate assembly containing a two piece center filler according to another embodiment of the invention
  • FIG. 4 is a fragmentary elevation view in cross section of a center plate assembly containing a two piece center filler showing a center filler retaining means according to another embodiment of the present invention
  • FIG. 5 is a fragmentary elevation view in cross section of another form of a two piece center filler illustrating another center filler retaining means
  • FIG. 6 is a fragmentary elevation view partially in cross section of the same type of center filler shown in FIG. 5 but with a different type of retaining means;
  • FIG. 7 is a fragmentary elevation view partially in cross section of a center plate assembly illustrating still another form of a two piece center filler assembly according to the present invention
  • FIG. 8 is an elevation view in cross section of still another two piece center filler construction in a center plateassembly according to the invention.
  • FIG. 9 is a partial plan view topside of the assembly illustrated in FIG. 8.
  • a center plate assembly for a railway car.
  • the assembly comprises a body bolster center plate having a lower bearing surface and a truck bolster center plate having an upper bearing surface and an outer peripheral flange surrounding said surface and projecting upwardly therefrom to define a cavity therein.
  • a detached center filler having upper and lower bearing surfaces which cooperate with the bearing surfaces of the truck and body center plates to carry vertical and horizontal loads therebetween.
  • the surfaces of the center filler have a hardness greater than that of the bearing surfaces of the truck center plate bowl and a hardness compatible with the bearing surface of the body center plate.
  • the filler and all of the plates contain a substantially centrally located opening therein in vertical alignment for receiving a pin means.
  • a center plate assembly 10 containing a one piece center filler l2 having a frusto-conical configuration.
  • the center filler is disposed within the cavity 14 defined by an upwardly projecting flange 16, generally circular, extending from the truck bolster 18.
  • the lower surface 20 of the center filler is disposed adjacent the upper bearing surface 22 of the truck center plate bowl.
  • a resilient pad 24, such as, an elastomer mat or hard particle impregnated cloth or hard particle in.a soft matrix may be disposed between these surfaces 20 and 22 as a friction-increasing means.
  • the upper bearing surface 26 of the center filler is in contact with the lower bearing surface 28 of the body center plate 30 which also is disposed within the cavity defined by the peripheral flange on the truck bolster.
  • the center filler is preformed of cast steel or the like and the bearing surfaces are case hardened by known metallurgical methods for long service life.
  • body center plate may be secured to the center sill 32 by means of a weldment 34 located at the underside of said sill.
  • a weldment 34 located at the underside of said sill.
  • the body center plate also is preformed of cast steel and the bearing surfaces are case hardened. The ideal condition would be that the upper bearing surface of the center filler have a hardness slightly less than the bearing surface of the body center plate so that any wear will be taken by the detached center filler which is easily replaced.
  • a vertical king pin 36 extends upwardly from a bore 38 in the truck bolster through the center filler and body center plate, each having a centrally located opening 40 and 42 to provide a safety measure against separation in the event of any vertical displacement in service. Such a connection is conventional in the industry and will not be further described.
  • the topmost portion of the body center plate 30, illustrated in FIG. 2, is represented by four corner positioning pads 44, each having a finished horizontally extending surface and connecting with intermediate beveled welding surfaces 46.
  • the upper section includes a thin encircling wall 48 which extends integrally upward from the plane of pads 44 and slopes approximately 2 to 3 inward to permit easy insertion within the center sill pocket.
  • Providing additional reinforcement to the central hub 50 are a plurality of web flanges 52, extending radially to merge with each of the enclosing side walls 48.
  • a center plate assembly 54 in which the center filler 56 is a two piece unit having a top section 58 and a bottom section 60.
  • the two piece center filler is disposed within the cavity 62 of the truck center plate 64 defined by peripheral flange 66 projecting upwardly from the body bolster 68.
  • the upper and lower sections of the center filler are opposed frusto-conical shapes and the lower bearing surface 70 of the body center plate 72 and the upper bearing surface 74 of the truck center plate 64 are of similar opposed concave frustoconical shape.
  • the body center plate 72 contains an outer peripheral flange 76 surrounding the lower bearing surface and projecting downwardly therefrom and overlapping the upwardly projecting flange 66 of the truck center plate to restrain lateral movement therebetween.
  • the body center plate is shown as being secured to the center sill by a weldment 78, and in turn, the center sill 80, which is generally U-shaped in configuration, is attached to the body bolster 82 by a weldment 84.-
  • This two piece design relies upon friction between the body center plate bearing surface 70 and the top surface 86 of the upper section 58 of the center filler and the truck center plate bearing surface 74 and the bottom surface 88 of the two piece center filler in order to make the relative rotational movement take place at the intermediate surfaces 89 of the hardened center filler.
  • bearing surfaces can readily be determined by those skilled in the art with Rockwell & Vickers testing apparatus and procedures or others known in the art.
  • resilient but hard urethane mats 90 are disposed between the upper and lower bearing surfaces of the two piece center filler and the bearing surfaces of the truck center plate and body center plate to increase the friction of these surfaces.
  • Other friction increasing means such as. a bitumastic compound or composite materials, i.e.,
  • hard particles on cloth or in a soft matrix may also be employed.
  • FIG. 4 there is shown a two piece center filler 92 in which the upper and lower sections 94 and 96 have at least one vertical projection 98 and 100 extending therefrom. Also the upper and lower bearing surfaces 102 and 104 of the truck and body center plates 106 and 108, respectively, have at least one vertical recess 110 and 112 for mating with the projections and restraining rotational movement therebetween.
  • FIG. 5 there is shown a center plate assembly 114 containing a two piece center filler 116 having relatively flat upper and lower surfaces 118 and 120.
  • the filler is disposed within the cavity 122 of the truck center plate 124 defined by the upwardly extending peripheral flange 126 from the truck bolster.
  • the body center plate 128 contains an outer peripheral flange 130 which overlaps the flange 126 of the truck center plate to restrain lateral movement therebetween.
  • an elastomer mat 136 Between the upper bearing surface 118 of the upper section 132 of the center filler 116 and the lower bearing surface 134 of the body center plate, there is disposed an elastomer mat 136 for increasing friction therebetween.
  • the lower section 138 of the center filler contains at least one lateral projection 140 extending therefrom which mates with at least one lateral recess 142 in the upwardly projecting flange 126 of the truck center plate for restraining rotational movement therebetween.
  • both the upper and lower sections of the center filler may contain a plurality of projections which mate with a plurality of recesses in the upwardly projecting flange, or the upwardly projecting flange of the truck center plate may be segmented or discontinuous to provide vertical slots between segments of the flange for restraining rotational movement of both sections.
  • FIG. 6 there is shown a center plate assembly 144 having a two piece relatively flat center filler 146 disposed within the cavity 148 of the truck center plate 150.
  • the upper and lower sections 152 and 154 of the center filler and the bearing surfaces 156 and 158 of the body and truck center plates 160 and 150 all contain aligned openings in which dowels 162 are disposed to preclude rotational movement between the upper and lower surfaces 164 and 166 of the center filler and body and truck center plate surfaces 156 and 158 and to make the relative rotational movement take place at the intermediate surfaces 168 of the hardened center filler.
  • the dowels in the figure are shown in line only for the purpose of illustration. In service the dowels are positioned so that they could not become aligned.
  • FIG. 7 there is shown another construction for a two piece center filler.
  • the upper section 170 of the filler 172 has a frusto-conical surface 174 that is roughened and frictionally engages the lower bearing surface 176 of the body center plate 177.
  • the upper section also contains an outer peripheral lip 178 which projects downwardly to define a cavity 180.
  • the lower section 182 which has a lower frusto-conical bearing surface 184 which is roughened and in engagement with the upper bearing surface 186 of the truck center plate 187 is disposed within the cavity of the upper section 170.
  • This construction which is partially disposed within the cavity 188 of the truck center plate and which is overlapped by a downwardly projecting peripheral flange 190 of the body center plate 177 inhibits lateral shifting of the lower section 182 with respect to the truck center plate 187 and the upper section 170 with respect to the body center plate 177.
  • the downwardly projecting lip 178 prevents lateral shifting of the lower section 182 with respect to the upper section 70.
  • FIGS. 8 and 9 there is shown a center plate assembly 192 having a two piece center filler.
  • the upper section 194 has a centrally located downwardly projecting lip 196 surrounding the central opening 198.
  • the remainder of the upper section of the center filler is relatively flat.
  • the bottom section 200 is also relatively flat and contains a central opening 202 of a size sufficient to accommodate the downwardly projecting lip 196 in a mating relationship.
  • the upwardly projecting flange 204 of the truck center plate contains cutouts 206 for interlocking with one or more laterally extending flanges 208 on the bottom section 200 of the center filler.
  • the downwardly projecting peripheral flange 210 of the body center plate also contains cutouts 212 or recesses for interlocking with laterally projecting flanges 214 of the upper section 194 of the center filler.
  • cutouts 212 or recesses for interlocking with laterally projecting flanges 214 of the upper section 194 of the center filler.
  • a center plate assembly for a railway car comprising a body bolster center plate having a lower bearing surface; a truck bolster center plate having an upper bearing surface and an outer peripheral flange surrounding said surface and projecting upwardly therefrom to define a cavity therein; and a detached center filler having upper and lower bearing surfaces disposed within the cavity between the body and truck center plate bearing surfaces cooperating therewith to carry vertical and horizontal loads therebetween; interengaging means restraining the filler from lateral and rotational movement; the surfaces of the center filler having a hardness greater than that of the bearing surfaces of the truck center plate and a hardness compatible with the surfaces of the body center plate, the filler and all of said plates having a substantially centrally located opening therein in vertical alignment for receiving a pin means.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Handcart (AREA)
  • Railway Tracks (AREA)
US00298965A 1972-10-19 1972-10-19 Railway car center bearing assembly Expired - Lifetime US3831530A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
US00298965A US3831530A (en) 1972-10-19 1972-10-19 Railway car center bearing assembly
ZA737568*A ZA737568B (en) 1972-10-19 1973-09-25 Railway car center plate assembly
IT52871/73A IT994362B (it) 1972-10-19 1973-10-02 Perfezionamento nei complessi di ralla per carrelli di vagoni ferroviari
NL7313792A NL7313792A (enrdf_load_stackoverflow) 1972-10-19 1973-10-08
AU61183/73A AU6118373A (en) 1972-10-19 1973-10-09 Center plate assembly
BE136581A BE805954A (fr) 1972-10-19 1973-10-11 Assemblage de plateau central pour wagon de chemin de fer
FR7337030A FR2203733B3 (enrdf_load_stackoverflow) 1972-10-19 1973-10-17
BR8164/73A BR7308164D0 (pt) 1972-10-19 1973-10-18 Aperfeicoamentos em conjunto de chapa de suporte central para carros ferroviarios
DE19732352549 DE2352549A1 (de) 1972-10-19 1973-10-18 Drehgestellzapfenlager fuer eisenbahnwagen
JP48117004A JPS4972815A (enrdf_load_stackoverflow) 1972-10-19 1973-10-19

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00298965A US3831530A (en) 1972-10-19 1972-10-19 Railway car center bearing assembly

Publications (1)

Publication Number Publication Date
US3831530A true US3831530A (en) 1974-08-27

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ID=23152754

Family Applications (1)

Application Number Title Priority Date Filing Date
US00298965A Expired - Lifetime US3831530A (en) 1972-10-19 1972-10-19 Railway car center bearing assembly

Country Status (10)

Country Link
US (1) US3831530A (enrdf_load_stackoverflow)
JP (1) JPS4972815A (enrdf_load_stackoverflow)
AU (1) AU6118373A (enrdf_load_stackoverflow)
BE (1) BE805954A (enrdf_load_stackoverflow)
BR (1) BR7308164D0 (enrdf_load_stackoverflow)
DE (1) DE2352549A1 (enrdf_load_stackoverflow)
FR (1) FR2203733B3 (enrdf_load_stackoverflow)
IT (1) IT994362B (enrdf_load_stackoverflow)
NL (1) NL7313792A (enrdf_load_stackoverflow)
ZA (1) ZA737568B (enrdf_load_stackoverflow)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4112851A (en) * 1977-02-25 1978-09-12 Pullman Incorporated Resilient constant contact center bearing assembly
US4224876A (en) * 1978-10-12 1980-09-30 Southern Railway Company Cup-shaped bolster bearing
US4565134A (en) * 1984-03-28 1986-01-21 Philip Groelz Cylindrical surface railcar center plate
US6138577A (en) * 1997-08-20 2000-10-31 Trn Business Trust Center plate for railcars
US6324995B1 (en) * 1999-06-04 2001-12-04 Amstead Industries Incorporated Railway car center filler plate
US20040261653A1 (en) * 2003-06-27 2004-12-30 Coslovi Ilario A. Center plate assembly for a rail road car
RU2289093C2 (ru) * 2005-03-10 2006-12-10 Государственное унитарное предприятие "Уральское отделение Всероссийского научно-исследовательского института железнодорожного транспорта Министерства путей сообщения Российской Федерации" Способ обеспечения норм зазоров в скользунах при ремонте грузовых вагонов с тележками цнии-х3 (модель 18-100)
RU2316724C1 (ru) * 2006-07-05 2008-02-10 Государственное унитарное предприятие "Уральское отделение Всероссийского научно-исследовательского института железнодорожного транспорта Министерства путей сообщения Российской Федерации" Способ обеспечения нормированного зазора в упругокатковых скользунах при ремонте грузовых вагонов с тележками модели 18-578 и устройство для осуществления этого способа
CN109131406A (zh) * 2018-09-06 2019-01-04 中车青岛四方机车车辆股份有限公司 轨道车辆的底架组件及轨道车辆

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102358312A (zh) * 2011-08-26 2012-02-22 齐齐哈尔轨道交通装备有限责任公司 铁路车辆底架及铁路车辆

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US403560A (en) * 1889-05-21 Center bearing plate for railway oars
US905754A (en) * 1908-02-13 1908-12-01 John E Sheehan Center-bearing for car-trucks.
US1009306A (en) * 1911-05-18 1911-11-21 John J Hennessey Center-bearing for cars.
US1147210A (en) * 1914-02-18 1915-07-20 James M Coleman Truck-retaining center-bearing.
US1653564A (en) * 1925-06-08 1927-12-20 Hezekiah Dent Truck center bearing
US1751065A (en) * 1928-10-17 1930-03-18 Timken Axle Co Detroit Center-bearing construction for railway cars
US2056221A (en) * 1933-09-02 1936-10-06 Pullman Standard Car Mfg Co Center bearing for railway cars
US2229925A (en) * 1938-12-01 1941-01-28 Jackson Samuel Articulated locomotive and like vehicles
US2258640A (en) * 1938-11-23 1941-10-14 Gen Steel Castings Corp Railway center plate structure
US3473854A (en) * 1968-02-19 1969-10-21 Midland Ross Corp Bolster center plate structure
US3709151A (en) * 1971-01-07 1973-01-09 Acf Ind Inc Railway car center bearing

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US403560A (en) * 1889-05-21 Center bearing plate for railway oars
US905754A (en) * 1908-02-13 1908-12-01 John E Sheehan Center-bearing for car-trucks.
US1009306A (en) * 1911-05-18 1911-11-21 John J Hennessey Center-bearing for cars.
US1147210A (en) * 1914-02-18 1915-07-20 James M Coleman Truck-retaining center-bearing.
US1653564A (en) * 1925-06-08 1927-12-20 Hezekiah Dent Truck center bearing
US1751065A (en) * 1928-10-17 1930-03-18 Timken Axle Co Detroit Center-bearing construction for railway cars
US2056221A (en) * 1933-09-02 1936-10-06 Pullman Standard Car Mfg Co Center bearing for railway cars
US2258640A (en) * 1938-11-23 1941-10-14 Gen Steel Castings Corp Railway center plate structure
US2229925A (en) * 1938-12-01 1941-01-28 Jackson Samuel Articulated locomotive and like vehicles
US3473854A (en) * 1968-02-19 1969-10-21 Midland Ross Corp Bolster center plate structure
US3709151A (en) * 1971-01-07 1973-01-09 Acf Ind Inc Railway car center bearing

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4112851A (en) * 1977-02-25 1978-09-12 Pullman Incorporated Resilient constant contact center bearing assembly
US4224876A (en) * 1978-10-12 1980-09-30 Southern Railway Company Cup-shaped bolster bearing
US4565134A (en) * 1984-03-28 1986-01-21 Philip Groelz Cylindrical surface railcar center plate
US6138577A (en) * 1997-08-20 2000-10-31 Trn Business Trust Center plate for railcars
US6324995B1 (en) * 1999-06-04 2001-12-04 Amstead Industries Incorporated Railway car center filler plate
US20040261653A1 (en) * 2003-06-27 2004-12-30 Coslovi Ilario A. Center plate assembly for a rail road car
US6915746B2 (en) * 2003-06-27 2005-07-12 Ronsco Inc. Center plate assembly for a rail road car
RU2289093C2 (ru) * 2005-03-10 2006-12-10 Государственное унитарное предприятие "Уральское отделение Всероссийского научно-исследовательского института железнодорожного транспорта Министерства путей сообщения Российской Федерации" Способ обеспечения норм зазоров в скользунах при ремонте грузовых вагонов с тележками цнии-х3 (модель 18-100)
RU2316724C1 (ru) * 2006-07-05 2008-02-10 Государственное унитарное предприятие "Уральское отделение Всероссийского научно-исследовательского института железнодорожного транспорта Министерства путей сообщения Российской Федерации" Способ обеспечения нормированного зазора в упругокатковых скользунах при ремонте грузовых вагонов с тележками модели 18-578 и устройство для осуществления этого способа
CN109131406A (zh) * 2018-09-06 2019-01-04 中车青岛四方机车车辆股份有限公司 轨道车辆的底架组件及轨道车辆
CN109131406B (zh) * 2018-09-06 2020-11-10 中车青岛四方机车车辆股份有限公司 轨道车辆的底架组件及轨道车辆
US11046336B2 (en) 2018-09-06 2021-06-29 Crrc Qingdao Sifang Co., Ltd. Chassis component of railway vehicle, and railway vehicle

Also Published As

Publication number Publication date
BE805954A (fr) 1974-02-01
AU6118373A (en) 1975-04-10
FR2203733A1 (enrdf_load_stackoverflow) 1974-05-17
ZA737568B (en) 1974-08-28
IT994362B (it) 1975-10-20
BR7308164D0 (pt) 1974-07-11
FR2203733B3 (enrdf_load_stackoverflow) 1976-09-03
JPS4972815A (enrdf_load_stackoverflow) 1974-07-13
NL7313792A (enrdf_load_stackoverflow) 1974-04-23
DE2352549A1 (de) 1974-05-02

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AS Assignment

Owner name: FIRST NATIONAL BANK OF CHICAGO, THE, ONE FIRST NAT

Free format text: SECURITY INTEREST;ASSIGNOR:AMSTED INDUSTRIES INCORPORATED;REEL/FRAME:004666/0778

Effective date: 19860227

Owner name: FIRST NATIONAL BANK OF CHICAGO, THE,ILLINOIS

Free format text: SECURITY INTEREST;ASSIGNOR:AMSTED INDUSTRIES INCORPORATED;REEL/FRAME:004666/0778

Effective date: 19860227

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Owner name: AMSTED INDUSTRIES, INC., 3700 PRUDENTIAL PLAZA, CH

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:DRESSER INDUSTRIES, INC., A CORP OF DE.;REEL/FRAME:004513/0932

Effective date: 19850911

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Owner name: AMSTED INDUSTRIES INCORPORATED, A CORP. OF DE., IL

Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:FIRST NATIONAL BANK OF CHICAGO, AS AGENT;REEL/FRAME:005070/0731

Effective date: 19880831