US3866455A - Mill roll changing system including a roll buggy - Google Patents

Mill roll changing system including a roll buggy Download PDF

Info

Publication number
US3866455A
US3866455A US429345A US42934573A US3866455A US 3866455 A US3866455 A US 3866455A US 429345 A US429345 A US 429345A US 42934573 A US42934573 A US 42934573A US 3866455 A US3866455 A US 3866455A
Authority
US
United States
Prior art keywords
buggy
mill
roll
supports
support
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
US429345A
Other languages
English (en)
Inventor
Andrew J Petros
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.)
Mesta Machine Co
Original Assignee
Mesta Machine 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 Mesta Machine Co filed Critical Mesta Machine Co
Priority to US429345A priority Critical patent/US3866455A/en
Priority to JP754224A priority patent/JPS5334793B2/ja
Priority to FR7443331A priority patent/FR2255969B1/fr
Application granted granted Critical
Publication of US3866455A publication Critical patent/US3866455A/en
Assigned to MESTA AND MELLON BANK, N.A. reassignment MESTA AND MELLON BANK, N.A. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MESTA MACHINE COMPANY
Assigned to MESTA MACHINE COMPANY A PA CORP. reassignment MESTA MACHINE COMPANY A PA CORP. RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: MELLON BANK, N.A., A NATIONAL BANKING ASSOC. AS AGENT (SEE DOCUMENT FOR DETAILS)
Assigned to PENNSYLVANIA ENGINEERING CORPORATION, A CORP. OF DE reassignment PENNSYLVANIA ENGINEERING CORPORATION, A CORP. OF DE MORTGAGE (SEE DOCUMENT FOR DETAILS). Assignors: MESTA ENGINEERING COMPANY A PARTNERSHIP
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
    • B21B31/10—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts by horizontally displacing, i.e. horizontal roll changing
    • B21B31/103—Manipulators or carriages therefor

Definitions

  • ABSTRACT A buggy for changing mill rolls and the like comprises first and second supports mounted thereon. Each of said supports terminates in a roll neck socket adjacent a front or mill end of said buggy, with each of said sockets being shaped to closely receive a roll neck of an associated one of said mill rolls and to support said roll in cantilevered fashion.
  • the buggy includes at least one such support mounted thereon and optionally with an arrangement for elevating the support relative to the buggy.
  • the present invention relates to a system for inserting and withdrawing the rolls of a rolling mill and more particularly to a system of the character described employing improved buggy and porter devices.
  • I also desirably provide a changing system for a rolling mill or the like, said system comprising a self propelled buggy, at least two transfer cars, first rail means for said buggy and extending transversely of a pass line of said rolling mill, second rail means for said transfer cars and extending generally parallel to said pass line.
  • said first rail means being generally aligned with a roll inserting and withdrawing window ofa mill stand forming means coupled to said supporting means for raising tion, and personnel hazard.
  • the roll changing system of the present invention is admirably and unexpectedly designed to reduce undue mechanical complexity and to facilitate maintenence.
  • the present system can be installed in conjunction with existing rolling mills without extensive and costly mill shutdowns.
  • Roll changing equipment according to the invention can be installed wherever desirable, in conjunction with each stand ofa rolling mill so that any or all of such stands can be changed simultaneously. Handling of the work rolls by a crane is eliminated, along with roll damage frequently caused by this and other known handling techniques.
  • my novel roll changing system can be employed in addition to transfer the mill rolls to and from the roll shop. The only alteration required in the rolling mill proper is provision of conventional means for holding the roll chocks in line during handling.
  • a buggy for changing mill rolls and the like comprising first and second support mounted thereon, each of said supports terminating in a roll neck socket adjacent a front or mill end of said buggy, each of said sockets being shaped to closely re ceive a roll neck of an associated one of said rolls and to support said mill roll in cantilevered fashion, and means for advancing and withdrawing said buggy from said mill for insertion and withdrawal of said mill rolls when so cantilevered.
  • I also desirably provide a similar roll changing system wherein a second roll support is provided and elevating mechanism is provided for said second roll support so that varying distances between said roll necks can be accomodated and so that said pair of rolls can be raised and lowered as an assembly relative to said transfer cars.
  • I also desirably provide a buggy for changing mill roll and the like, said buggy comprising a support movably mounted thereon, said support terminating in a roll neck socket adjacent a front or mill end of said buggy and shaped to closely receive a roll neck of an associated one of said mill rolls for supporting the mill roll in cantilevered fashion, and means for advancing and withdrawing said buggy from said mill for insertion and withdrawal of said mill roll when so cantilevered.
  • FIG. I is a side elevational view of mill rolls as positioned within a typical four-high mill stand of a rolling mill, [together with the roll changing apparatus of the invention;
  • FIG. 2 is in general a top plan view of the roll chang ing apparatus substantially as shown in FIG. 1 but showing the apparatus supporting work rolls withdrawn from the mill stand;
  • FIG. 3 is a rear elevational view of the roll changing apparatus as shown in FIG. 1;
  • FIG. 4 is an enlarged longitudinally sectioned view of the roll changing apparatus as shown in FIG. 2 and taken along reference line IVIV thereof;
  • FIG. 5 is the cross sectional view of the roll changing apparatus shown in FIG. 2 but taken along reference line VV thereof;
  • the mill stand 20 is of the four-high variety and includes work rolls 22, 24 and back up roll 26, 28.
  • the roll changing system or apparatus proper in cludes a self-propelled buggy 32 which is driven along a pair of rails or tracks 34.
  • the tracks 34 as better shown in FIG. 2 extend transversely of the mill stand 20 and its pass line 36 as evident from a comparison of FIGS. 1 and 2 the motorized buggy 32 is driven between the positions evident in FIGS. 1 and 2 respec tively in order to engage the work rolls 22, 24 for withdrawal thereof (FIG. 1) and thereafter to move the work roll assembly as a unit through and from the mill stand window 38 (FIG. 2) rearwardly to one of the side shifting transfer cars 40 (FIGS. 1-3).
  • the transfer cars 40 are structured for movement along a pair of rails or tracks 42 which extend generally parallel of the rolling mill and its pass line 36 or transversely of the buggy track 34 (FIGS. 2 and 3).
  • a pair of the transfer cars 40 desirably are provided such that one of the cars for example car 40a supports a replacement work roll assembly 44 at a position laterally and out of the way of the roll changing buggy 32, and its track 34 while the buggy is withdrawn to the rear or away from the mill stand 20 and carries with it a used roll assembly 46.
  • the vacant transfer car 40b can be moved to a position between the buggy rails 34 (or to the right, as viewed in FIG. 3) and thus directly beneath the used roll assembly 46 so that the latter can be lowered directly onto the empty transfer car 40b.
  • the transfer cars 40a, 40b are moved along their rails or tracks 42 by suitable traction means, in this example piston and cylinder arrangements 48, 50 respectively.
  • the cylinders 48, 50 are somewhat off set relative to the center lines of the transfer cars 40 (FIG. 2) so as to accomodate in side by side relation similar cylinders for transfer cars (not shown) are of adjacent mill stands.
  • the cars 40 are arched or otherwise constructed so that the adjacent end portions of the cylinders 48, 50 extend beneath the platform structure of the transfer cars 40 for connection at 52 (FIG. 3) or the far side of the transfer car relative to the floor anchor 54 of the cylinder. This accommodates a cylinder of longer stroke without sacrifice of floor space.
  • the work roll assemblies desirably are engaged and supported in cantilevered fashion by the buggy 32.
  • Transportation of the mill rolls in cantilevered fashion poses a number of problems. Firstly, the work roll necks 52, 54 must be securely engaged by the cantilevering structure of the buggy 32.
  • the buggy 32 and its roll supporting components must be structured such that the used work roll assembly 46 can be accurately withdrawn in a linear fashion from the mill stand window 38 without damage to the roll assembly 46 or to adjacent and sometimes closely spaced components of the mill stand 20.
  • the buggy 32 must be configured such that the roll engaging component can be accurately raised and lowered under the weight and torque loadings imposed thereon by the cantilevered work roll assembly 44 or 46.
  • at least one of the roll engaging members of the buggy 32 must be adjustable horizontally and vertically relative to the other roll engaging member in order to accommodate work rolls of differing facial diameters and the inevitable vertical displacement of the adjacent ends of the roll necks 56, 58.
  • FIG. 1-3 One arrangement for thus transporting and cantilevering the work roll assemblies 44, 46 during the respective roll changing operations, is shown in FIG. 1-3 but is illustrated in greater detail in FIGS. 4 and 5.
  • the buggy 32 is heavily constructed and includes a pair of railway trucks 60, 62 for engagement with the buggy rails 34, which if desired can be machined into the mill floor structure 64 as evident from FIG. 5.
  • the trucks 60, 62 including their axles 66 are rotated together by suitable driving mechanism including in this example electric motor 68 and a speed reducer 70 or 72 coupled to each of the axles 66 and to the motor 68. Power is thus applied to both sets of railway trucks 60, 62 in this example of the invention.
  • the relatively heavy drive motor 68 and tachometer 69 are housed in a rearward extension 74 of the buggy 32 to aid (along with the rather heavy construction of the buggy itself) in counterbalance the considerable weight of the cantilevered work roll assembly 44 or 46.
  • a pair of cantilevering and elevatable supports 76, 78 are provided respectively for the upper and lower work rolls of the work roll assembly (FIGS. 4 & 5).
  • the supports 76, 78 are spacedly and slidably mounted on the buggy 32.
  • a pair of relatively rigid upright stabilizing plates 80, 82 are spaced outwardly of the roll supports 76, 78 as evident from FIGS. 2 and 5 of the drawings.
  • Each of the cantilevering roll supports 76, 78 terminates at its forward or mill end in a roll neck receiving socket 84 or 86, respectively.
  • one of the roll neck sockets for example the socket 84, includes a screw driven shank 88 mounted in a second and larger socket 90 therefor also mounted on the upper roll support 76.
  • the screw mechanism 88 is driven by transmission denoted generally by reference character 92 and a suitable drive, for example electric motor 94 typically mounted on platform 96 extending between vertical plates 98 of the upper roll support 76.
  • the upper roll neck socket 84 thus can be adjusted horizontally of the buggy 32 and ofthe lower roll neck socket 86.
  • the roll neck sockets 84, 86 are sized for insertion of the largest anticipated roll neck 56, 58, and where smaller roll necks are encountered, a suitable liner such as that denoted at 100 can be inserted in one or both of the sockets 84, 86.
  • the upper and lower roll supports 76, 78 are guided in their elevating movements (effected by elevating mechanisms presently to be described) by pairs of guideway plates denoted generally at 102, 104 and secured in this example respectively to inner and outer surfaces of the lower support vertical plates 126.
  • the guide plates 102, 104 cooperate with complementary guide ways formed on the juxtaposed surfaces of the stabilizing plates 80, 82 and on the upper support vertical plates 98.
  • the upper and lower cantilevering supports 76, 78 are precisely guided in their elevating movements with respect to the buggy 32 and to one another.
  • the upper cantilevering structure or support 76 is elevated by a pair of gear housings 106, 108 to which a suitable drive means for example electric motor 110 is coupled.
  • the gear housings which in this example each include a worm and worm gear are connected through their output shafts and clevis joints 112 to the forward platform 96 (mentioned previously) of the upper framework 76 and a rearward platform 114 likewise extending between the vertical plates 98 of the upper support 76.
  • the lower elevating support 78 is provided with a similar elevating mechanism including electric motor 116, gear mechanisms 118, 120 which are similarly coupled to platforms 122, 124 extending between the aforementioned vertical plates 126 of the lower elevating framework 78.
  • the various elevating mechanisms for the upper and lower supports 76, 78 are mounted on platform structures extending between the stabilizing plates 80, 82 or between the outer housing plates 128 of the buggy 32, as evident from FIGS. 4 and 5.
  • the elevating and cantilevering supports 76, 78 and the roll neck sockets 84, 86 respectively can be positioned precisely to receive the roll necks 56, 58 in respective of the facial diameters of the work rolls, within the structural limits of the buggy components. This is essential as work rolls of differing diameters frequently are substituted during a given shift or turn.
  • the elevating feature of the cantilevering supports 76, 78 permit the buggy roll sockets 84, 86 to be adjusted to the precise elevation of the total work roll assembly 44 or 46 depending upon the height of the transfer car 40 in the case of the roll assembly 44 or upon the diameter of the lower back up roll 28 and/or the size of elevation of other related components of the mill stand 20.
  • a buggy for changing mill rolls and the like comprising first and second supports mounted thereon, each of said supports terminating in a roll neck socket adjacent a front or mill end of said buggy, each of said sockets being shaped to closely receive a roll neck of an associated one of said mill rolls and to support said mill roll in cantilevered fashion, means on said buggy for elevating at least one of said supports with respect to said buggy and to the other of said supports so that the distance between said roll neck sockets can be varied, and means for advancing and withdrawing said buggy from said mill for insertion and withdrawal of said mill rolls when so cantilevered.
  • a buggy for changing mill rolls and the like comprising first and second supports mounted thereon, each of said supports terminating in a roll neck socket adjacent a front or mill end of said buggy, each of said sockets being shaped to closely receive a roll neck of an associated one of said mill rolls and to support said mill roll in cantilevered fashion, and means for advancing and withdrawing said buggy from said mill for insertion and withdrawal of said mill rolls when so cantilevered, means for elevating each of said supports relative to said buggy and to one another so that the distance between said roll neck sockets can be varied to accommodate face mill rolls having differing facial diameters, each of said supports including a pair of upstanding spaced plates, and a number of complementary guideways formed between said plates and between a pair of juxtaposed stabilizing plates rigidly secured to said buggy.
  • a changing system for the mill rolls ofa rolling mill or the like comprising a self propelled buggy, at least two transfer cars, first rail means for said buggy and extending transversely of a pass line of said rolling mill, second rail means for said transfer cars and extending generally parallel to said pass line, said first rail means being generally aligned with a roll inserting and withdrawing window of a mill stand forming a part of said rolling mill, means for propelling said buggy along said first rail means and for propelling said transfer cars along said second rail means, and a pair of roll supports on said buggy shaped for engagement with the roll necks of a pair of said mill rolls for supporting said mill rolls in cantilevered fashion, said transfer cars being shaped for passage beneath said one mill roll when so supported on said buggy, and elevating means coupled to said roll supports for elevating said mill rolls and said supports relative to one another and to said buggy and to said transfer cars and for accommodating varying the center line distances between said mill rolls during such elevation.
  • a buggy for changing mill rolls and the like comprising a support movably mounted thereon, said support terminating in a roll neck socket adjacent a front or mill end of said buggy and shaped to closely receive a roll neck of an associated one of said mill rolls for supporting the mill roll in cantilevered fashion.
  • means for elevating said support with respect to said buggy said support including an upstanding plate.
  • complementary guideway means formed between said support plate and a juxtaposed stabilizing plate rigidly secured to said buggy, and means for advancing and withdrawing said buggy from said mill for insertion and withdrawal of said mill roll when so cantilevered.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Handcart (AREA)
US429345A 1973-12-28 1973-12-28 Mill roll changing system including a roll buggy Expired - Lifetime US3866455A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US429345A US3866455A (en) 1973-12-28 1973-12-28 Mill roll changing system including a roll buggy
JP754224A JPS5334793B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1973-12-28 1974-12-28
FR7443331A FR2255969B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1973-12-28 1974-12-30

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US429345A US3866455A (en) 1973-12-28 1973-12-28 Mill roll changing system including a roll buggy

Publications (1)

Publication Number Publication Date
US3866455A true US3866455A (en) 1975-02-18

Family

ID=23702845

Family Applications (1)

Application Number Title Priority Date Filing Date
US429345A Expired - Lifetime US3866455A (en) 1973-12-28 1973-12-28 Mill roll changing system including a roll buggy

Country Status (3)

Country Link
US (1) US3866455A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS5334793B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2255969B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3926027A (en) * 1975-02-11 1975-12-16 Wean United Inc Roll changing apparatus for a rolling mill or the like
US4074558A (en) * 1977-02-17 1978-02-21 Gulf & Western Manufacturing Company Roll changing apparatus
US4784596A (en) * 1986-12-19 1988-11-15 Hermann Berstorff Maschinenbau Gmbh Calendering apparatus
US5746081A (en) * 1993-03-27 1998-05-05 Sms Schloemann-Siegmag Aktiengesellschaft Reversing compact installation for cold rolling strip-shaped rolling material
EP0908246A1 (fr) * 1997-10-10 1999-04-14 Kvaerner Metals Clecim Dispositif de changement des cylindres de travail et/ou des cylindres intermédiaires d'une cage de laminoir, et ratelier de stockage pour un tel dispositif
US6038905A (en) * 1998-04-17 2000-03-21 Danieli & C. Officine Meccaniche Spa Device to remove working rolls in a four-high rolling stand
KR20170086085A (ko) * 2014-12-04 2017-07-25 봅스트 맥스 에스에이 공구-홀더 헤드, 이송 캐리지, 및 편평한 재료를 조정하기 위한 유닛용의 공구의 탑재 및 제거 방법

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3323345A (en) * 1951-01-28 1967-06-06 Blaw Knox Co Roll changing apparatus
US3559441A (en) * 1968-11-01 1971-02-02 Mesta Machine Co Roll changing device for roll leveler, straightener and the like
US3698226A (en) * 1971-07-01 1972-10-17 Blaw Knox Foundry Mill Machine Roll changers

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3323345A (en) * 1951-01-28 1967-06-06 Blaw Knox Co Roll changing apparatus
US3559441A (en) * 1968-11-01 1971-02-02 Mesta Machine Co Roll changing device for roll leveler, straightener and the like
US3698226A (en) * 1971-07-01 1972-10-17 Blaw Knox Foundry Mill Machine Roll changers

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3926027A (en) * 1975-02-11 1975-12-16 Wean United Inc Roll changing apparatus for a rolling mill or the like
US4074558A (en) * 1977-02-17 1978-02-21 Gulf & Western Manufacturing Company Roll changing apparatus
US4784596A (en) * 1986-12-19 1988-11-15 Hermann Berstorff Maschinenbau Gmbh Calendering apparatus
US5746081A (en) * 1993-03-27 1998-05-05 Sms Schloemann-Siegmag Aktiengesellschaft Reversing compact installation for cold rolling strip-shaped rolling material
EP0908246A1 (fr) * 1997-10-10 1999-04-14 Kvaerner Metals Clecim Dispositif de changement des cylindres de travail et/ou des cylindres intermédiaires d'une cage de laminoir, et ratelier de stockage pour un tel dispositif
FR2769525A1 (fr) * 1997-10-10 1999-04-16 Kvaerner Metals Clecim Dispositif de changement des cylindres de travail et/ou des cylindres intermediaires d'une cage de laminoir, et ratelier de stockage pour un tel dispositif
US6098439A (en) * 1997-10-10 2000-08-08 Kvaerner Metals Clecim Device for changing the rolls and/or the intermediate rolls in a roll stand and storage rack for such a device
US6038905A (en) * 1998-04-17 2000-03-21 Danieli & C. Officine Meccaniche Spa Device to remove working rolls in a four-high rolling stand
KR20170086085A (ko) * 2014-12-04 2017-07-25 봅스트 맥스 에스에이 공구-홀더 헤드, 이송 캐리지, 및 편평한 재료를 조정하기 위한 유닛용의 공구의 탑재 및 제거 방법
US20180290417A1 (en) * 2014-12-04 2018-10-11 Bobst Mex Sa Tool-holder head, transport carriage and methods for mounting and removing a tool for a unit for converting a flat substrate
US10696003B2 (en) * 2014-12-04 2020-06-30 Bobst Mex Sa Tool-holder head, transport carriage and methods for mounting and removing a tool for a unit for converting a flat substrate

Also Published As

Publication number Publication date
JPS5334793B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1978-09-22
FR2255969B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1980-08-08
FR2255969A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1975-07-25
JPS5098464A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1975-08-05

Similar Documents

Publication Publication Date Title
US3665746A (en) Combination rolling mill
US3221530A (en) Rolling mills horizontal-roll change
US2037210A (en) Roll changing apparatus
US3355923A (en) Rolling mill of the reducing type
GB1421629A (en) Apparatus for dismantling and assembling roll assemblies of a rolling mill
US3638468A (en) Roll-changing means for four-high rolling mill
US3866455A (en) Mill roll changing system including a roll buggy
US3491570A (en) Roll changing rig
US3376724A (en) Automatic roll changing means and methods of roll changing
US3754426A (en) Roll changing arrangement for a rolling mill
US3566498A (en) Method for changing the rolls of a rolling mill and apparatus for applying the method
US3583195A (en) Roll changing apparatus
US4471642A (en) Replacement stand for rolling mill
US3365174A (en) Rolling mill roll changing apparatus
US3842639A (en) Side-shifting mill roll
US4478065A (en) Continuous rolling mill with crossed stands for the production of seamless tubes
US3418838A (en) Stand changing units for continuous rolling mills
US3905485A (en) Roll changing device for a rolling mill and the like
US3451244A (en) Automatic work roll changers
US3585831A (en) Rolling mill structure and roll changing means therefor
US3540254A (en) Apparatus for removing and replacing rolling mill drive spindles
US5078000A (en) Rolling mill with interchangeable roller apparatus
US3540253A (en) Roll changers
US5787749A (en) Rolling mill stand
US3889344A (en) Extractor for guide rolls

Legal Events

Date Code Title Description
AS Assignment

Owner name: MESTA AND MELLON BANK, N.A., MELLON SQUARE, PITTSB

Free format text: SECURITY INTEREST;ASSIGNOR:MESTA MACHINE COMPANY;REEL/FRAME:003861/0980

Effective date: 19810529

AS Assignment

Owner name: MESTA MACHINE COMPANY SEVENTH AVE., WEST HOMESTEAD

Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:MELLON BANK, N.A., A NATIONAL BANKING ASSOC. AS AGENT (SEE DOCUMENT FOR DETAILS);REEL/FRAME:004101/0198

Effective date: 19830114

Owner name: PENNSYLVANIA ENGINEERING CORPORATION, 32ND ST., A

Free format text: MORTGAGE;ASSIGNOR:MESTA ENGINEERING COMPANY A PARTNERSHIP;REEL/FRAME:004101/0185

Effective date: 19830214