US3759661A - Kiln cars - Google Patents

Kiln cars Download PDF

Info

Publication number
US3759661A
US3759661A US00219303A US3759661DA US3759661A US 3759661 A US3759661 A US 3759661A US 00219303 A US00219303 A US 00219303A US 3759661D A US3759661D A US 3759661DA US 3759661 A US3759661 A US 3759661A
Authority
US
United States
Prior art keywords
kiln car
barrier means
car according
posts
kiln
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
US00219303A
Other languages
English (en)
Inventor
N Barsby
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.)
Steetley Engineering Ltd
Original Assignee
Gibbons Brothers Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gibbons Brothers Ltd filed Critical Gibbons Brothers Ltd
Application granted granted Critical
Publication of US3759661A publication Critical patent/US3759661A/en
Assigned to STEETLEY ENGINEERING LIMITED reassignment STEETLEY ENGINEERING LIMITED CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE JULY 13, 1981. Assignors: GIBBONS BROTHERS, LIMITED
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/12—Travelling or movable supports or containers for the charge
    • F27D3/123—Furnace cars
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/17—Amines; Quaternary ammonium compounds
    • C08K5/18—Amines; Quaternary ammonium compounds with aromatically bound amino groups
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K15/00—Anti-oxidant compositions; Compositions inhibiting chemical change
    • C09K15/04—Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds
    • C09K15/16—Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds containing nitrogen
    • C09K15/18—Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds containing nitrogen containing an amine or imine moiety
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M3/00—Liquid compositions essentially based on lubricating components other than mineral lubricating oils or fatty oils and their use as lubricants; Use as lubricants of single liquid substances

Definitions

  • the invention concerns kiln cars each of which comprises a base having wheels enabling same to travel along a track in the kiln or enclosure, and superposed on the base a structure known generally and herein termed a car top, on the upwardly presented face of which the load of ceramic. were is supported when'the kiln car is in use.
  • kiln cars are herein referred to .as being of the kind specified.
  • the car top comprises a lower part or subdeck which serves the purpose of acting as a heat barrier between a heating zone in which the were is situated,
  • the base of the kiln carto be constructed of ordinary mild steel girders or the like strucrial which serve peripherally to enclose a central portion formed of cast ceramic material.
  • the central portion may include a layer of loose aggregate.
  • the upper part of the car top is usually composed of beams, termed piers, laid side by side on the upwardly presented surface of the subdeck, and at their upper ends collectively providing the required supporting surface for the ware. Often there is more than one layer of such piers, the piers of successive layers being ar-' ranged transversely to each other.
  • the upper part of the car top has been composed of relatively thick-walled posts having enlargements of their cross-section at their lower and upper ends standing on but not penetrating the subdeck these posts supporting a were carrying platform respectively.
  • a subdeck composed of a metal box containing foil.
  • the upper part of the car top in this case comprised a number of upwardly extending posts standing, at their lower ends on the box forming the subdeck and carrying at their upper ends a load carrying deck for supporting the ware.
  • One of the major disadvantages is that a considerable weight of material is involved in the construction or formation of the car top as a whole (i.e., the subdeck and upper part), and inevitably the heat absorbed-by that, or larger than that, absorbed by the load of ceramic ware.
  • the ware may have a residence time in the kiln or enclosure of the order of 1 hour, heating of the ware to the proper temperature may be delayed, and, moreover, a very substantial quantity of heat is lost when the car moves out of theenclosure and the heat absorbed by the car top is dissipated.
  • the object of the present invention is to provide a new or improved construction of kiln car whereby these disadvantages are avoided or reduced.
  • a kiln car comprising a base having wheels enabling the car to travel along a track in a kiln or enclosure, and a car top superposed on the base and which includes firstly a load carrying means formed of posts having lower end portions interengaged vertically with complementary "receiving elements on the base and providing stable support for the posts, the latter at their upper endssupporting an upper deck for carrying the ware, and secondly a thermal barrier means through which the posts extend.
  • the thermal barrier means may be composed of layers of lightweight material since it performs only the function of heat-insulation and does not require to either bear anypart of the load or provide stabilization the car top is substantial and may be comparable'with therefor. This enables the mass 'ofmaterial incorporated in the car top to be very significantly reduced in comparison with conventional car tops. Accordingly the car top in accordance with the invention is especially suitable for use in kilncars requiredto undergo fast heating cycles as above referred to.
  • FIG. 1 is a view in side elevation and in longitudinal cross-section on the line 22 of FIG. 2 through one embodiment of kiln car in accordance with the invention
  • FIG. 2 is a view in transverse cross-section on theline 1-1- of FIG. 1 through'the same embodiment
  • FIG. 3 is a plan view of the same embodiment in which the top deck is omitted;
  • FIG. 4 is a fragmentary view on an enlarged scale in vertical longitudinal cross-section through two adjacent kiln cars;
  • FIG. 5 is a fragmentary view in plan showing a modified form of top layer in the heat insulating barrier.
  • FIG. 6 is a fragmentary plan view on an enlarged scale of the top deck of the kiln car.
  • resulting grid is surrounded by an outer frame composed of longitudinally extending girders 13 and transverse girders 14.
  • Axle beams 15 carrying flanged wheels 16 for running on rails extending through the kiln with which the car is intended to be used are supported by brackets 17 secured to certain of the girders 11.
  • All these components may be made from relatively inexpensive material, for example mild steel.
  • a car top comprising an upper deck 19.
  • Such deck is composed of a plurality of rectangular thin walled plates or bats 20 of ceramic material formed with bevelled corners to form apertures so that collectively they are supported in coplanar relation and located against horizontal displacement by caps 21 having upwardly projecting square spigots 22 extending through the apertures defined by the cut-outs, as seen more particularly in FIG. 6.
  • the car top further comprises a plurality of upwardly sockets 24 or secured thereto as by welding if desired.
  • the barrier means is composed of a plurality of strata or layers of which the uppermost is a thin plate of ceramic batt or compressed fibre board tiles 26. This typically has a thickness of only some quarter of an inch and hence is of very low mass per unit area.
  • the tiles 26 as seen in FIG. 3 are bevelled at their corners to provide apertures for passage of the posts. Where the posts emerge they are fitted with frustoconical sleeves 26a closely embracing the posts and covering the apertures.
  • Two types of tiles are involved projecting support elements in the form of thin walled posts of circular cross-section composed of ceramic materials as indicated at 23.
  • the wall thickness of the tubes is selected to provide adequate strength to carry the load, whilst at the same time restricting the heat conduction path from the zone 18 to the base of the car, and thereby reducing the rate of transference of heat to the base of the car.
  • the tubes may have a diameter of between 2.5 cm and 10 cm typically about 5 cm, and a wall thickness of between 3 mm and 25 mm respectively typically about 6 mm.
  • Posts of other cross-sectional shape may be employed e.g., cruciform shape or hollow rectangular shape.
  • the ratio of cross-sectional area to circumscribing area would preferably be in the range already mentioned.
  • the posts interfit vertically with complementary elements in a male and female relation such as to provide lateral stability to the posts.
  • the necessary elements comprise sockets 24 on the base of the car.
  • Such sockets may be formed from mild steel sheet or plate welded to appropriate H girders such as the girders 12.
  • the lower end portions of the posts 23 are a relatively loose sliding fit in the sockets 24, thereby providing an air space between the inner surfaces of the'sockets and the tubes except for points of local contact, and further retarding conductive heat transmission from the tubes to the base of the car.
  • posts are removable from the sockets and, therefore, the number of posts employed can be varied as required in accordance with the load to be carried. Further, any damaged posts can readily be replaced.
  • a thermal barrier means 25 Overlying the base of the car, and situated at a level just above the base, is a thermal barrier means 25 having apertures through which the posts 23 extend.
  • the barrier means is, therefore, not structurally loaded by the posts and does not perform any load-bearing function with respect to the load of ware or the parts of the car top above the barrier means.
  • the barrier means is supported in metal plates 28 on the upper ends of the in the layer shown in FIG. 3, whereas in the modification shown in FIG. 5 a single form of tile 26b is used having an additional V-shaped cut-out 260 along each edge.
  • the first layer 27a may be composed of a aluminosilicate ceramic fibre the material known as KOOWOOL is suitable. This material is of fairly open or uncompressed forrn. The interstices between the fibres provide a particularly effective degree of heat insulation. Blocks of rigid ceramic heat insulating material 27b are provided in the layer 27a to support the tiles 26.
  • the second layer 27c is composed of Vermiculite and is of particulate form.
  • the third layer 27d is composed of a board or tiles of light-weight slab material such as calcium silicate. Alternatively a diatomaceous material such as that known as SKAMOL N/4 is suitable.
  • the particulate layer 270 can be replaced by one composed of a light weight heat insulating or other material of non-particulate i.e., shape holding form. This allows posts 23 to be withdrawn for replacement without spillage material into the openings through the barrier means or into the sockets 24.
  • the barrier means further includes a peripheral frame composed along the sides of insulating refractory bricks 29 and plates 30 supported on the peripheral girders 13 and 14 of the base.
  • the girder 14 carries an insulating refractory brick 31 the end face of which has an upwardly presented step 32, in profile whereas the other end of the car of the brick 33 has an end face which has a downwardly presented step 34 in profile.
  • the ends of the girders l1 carry contact plates 35 which engage to preserve a stepped passageway between stepped profile faces of the bricks 31 33 on two successive cars when their plates 35 abut one another.
  • barrier means bounded laterally by dense elements of considerable mechanical strength, yet in its interior the barrier means is composed of relatively light materials.
  • this material absorbs only a relatively small quantity of heat in comparison with car tops of conventional form and the kiln car, is, therefore, especially well adapted for use kilns or other enclosures where heating is requiredto be carried out in accor-v dance .with a short cycle time.
  • the mass per unit plan area presented by the layers 26, 27a 27b 27c is of the order of 0.005 Kg/sq cm (approximately lb./sq.ft/).
  • Somewhat more dense heat insulating materials could be employed providing a mass per unit plan area of up to 0.010 Kg/sq. cm (approximately lb./sq,ft) while still maintaining the technical advantages achieved by the present invention.
  • r v 1 In a kiln'car comprising a base having wheels for running on a kiln track, a car top superposed on the base, a non-load bearing thermal barrier means overlying the base, upright supports extending through said thermal barrier means, and an upper ware supporting deck carried by said supports, the improvement wherein:
  • the supports comprise thin-walled support elements of non-metallic material
  • receiving elements for the support elements are disposed at least predominantly below, and thermally protected by said thermal barrier means;
  • the support elements interfit vertically with the receiving elements.
  • a kiln car according to claim 1 wherein said support elements releasably interfit withthe corresponding receiving elements.
  • a kiln car according to claim 2 whereinsaid receiving elements comprise sockets and the support elements comprise hollow posts, and wherein the lower ends of the posts are loosely interfitted with said sockets to minimise heat transference between the posts and the sockets.
  • thermal barrier means rests on metal plates extending between and resting onor connected to said sockets adjacent to their upper ends.
  • non-metallic refractory elements having end faces of complementary stepped profile in vertical longitudinal cross-section.
  • abutment members adapted to engage the corresponding abutment members on an adjacent car to maintain separation between complementary ones of said end faces on adjacent cars respectively and hence maintain a passageway of stepped profile between said adjacent cars.
  • each support element is a hollow post the dimensions of which are such that the ratio of its transverse cross-sectional area relative to its circumscribed area is between 0.3 and 0.8, to reduce conductive transmission of the heat to said base of said kiln car to an acceptably low level while providing the required mechanical strength to support the ware load.
  • thermal barrier means includes an upper plate-like layer which is resistant to flame impingement.
  • thermal barrier means includes ceramic supports.
  • thermal barrier means comprises a plurality of layers of thermal insulation material.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Polymers & Plastics (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Tunnel Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Furnace Details (AREA)
US00219303A 1971-01-28 1972-01-20 Kiln cars Expired - Lifetime US3759661A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB341271A GB1368073A (en) 1971-01-28 1971-01-28 Kiln cars

Publications (1)

Publication Number Publication Date
US3759661A true US3759661A (en) 1973-09-18

Family

ID=9757855

Family Applications (1)

Application Number Title Priority Date Filing Date
US00219303A Expired - Lifetime US3759661A (en) 1971-01-28 1972-01-20 Kiln cars

Country Status (10)

Country Link
US (1) US3759661A (de)
JP (1) JPS4828507A (de)
AU (1) AU471489B2 (de)
BR (1) BR7200427D0 (de)
DE (1) DE2203360C3 (de)
ES (1) ES399247A1 (de)
FR (1) FR2124832A5 (de)
GB (1) GB1368073A (de)
IT (1) IT948943B (de)
SE (1) SE376299B (de)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3834865A (en) * 1973-03-07 1974-09-10 Lincoln Mfg Co Dolly structure
US4243385A (en) * 1979-02-26 1981-01-06 Resco Products, Inc. End block
US4300881A (en) * 1980-02-01 1981-11-17 Salviata Impianti S.P.A. Truck or the like for conveying ceramic articles through a kiln
US4330267A (en) * 1980-11-17 1982-05-18 American Standard Inc. Kiln car
US4348175A (en) * 1980-11-17 1982-09-07 American Standard Inc. Kiln car
US4560350A (en) * 1984-03-29 1985-12-24 Resco Products, Inc. End block
US4721459A (en) * 1986-06-30 1988-01-26 Ferro Corporation Modular, insulating kiln car top
DE3821589A1 (de) * 1987-06-27 1989-01-05 Keller Ofenbau Gmbh Ofenwagen fuer einen tunnelofen der keramischen industrie
US5112223A (en) * 1991-03-04 1992-05-12 Dal-Tile Corporation Hollow load-bearing universal kiln car refractory modules
US5529488A (en) * 1995-07-14 1996-06-25 Norton Chemical Process Products Corp. Kiln car
WO2001050077A1 (de) * 2000-01-05 2001-07-12 Ceric Thermic Wistra Gmbh Tragende struktur für brennöfen mit sehr hoher brenntemperatur
USRE39551E1 (en) 1995-05-09 2007-04-10 Burlodge Limited Food dispensing cycle and means
US20100133220A1 (en) * 2008-12-01 2010-06-03 Ngk Insulators, Ltd. Shelf assembly for firing
WO2012076319A1 (de) * 2010-12-09 2012-06-14 Saint-Gobain Industriekeramik Rödental GmbH Keramische platte für brennwagenaufbauten und feuerfestzustellungen
CN108285262A (zh) * 2018-02-09 2018-07-17 郑州旭飞光电科技有限公司 基板玻璃窑炉加料机定位装置

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5290505U (de) * 1975-12-27 1977-07-06
JPS52115656U (de) * 1976-02-27 1977-09-02
GB1557962A (en) * 1976-06-08 1979-12-19 Acme Marls Ltd Support structure for ceramic ware
JPS53128949U (de) * 1977-03-19 1978-10-13
JPS53157147U (de) * 1977-05-16 1978-12-09
IT7828986V0 (it) * 1978-08-03 1978-08-03 Poppi Studio Tec Ind Carrello per forni a cottura rapida in particolare di prodotti di materiali ceramici quali piastrelle e simili
DE3123896C2 (de) * 1981-06-16 1985-12-12 Adolf A. Fleischmann Inh. Werner Fleischmann, 6000 Frankfurt Tunnelofenwagen
DE3138638A1 (de) * 1981-09-29 1983-07-28 Norbert Dr. 5414 Vallendar Steuler Brennhilfsmittelaufbau fuer das einlagige brennen keramischer formlinge (fliesen)
JPS58111900U (ja) * 1982-01-26 1983-07-30 日本碍子株式会社 セラミツク焼成用台車
DE8306841U1 (de) * 1983-03-09 1983-07-21 Norton GmbH, 5047 Wesseling Brennwagen mit regalaufbau aus feuerfestem keramikwerkstoff fuer die keramische industrie
JPS6025900U (ja) * 1983-07-28 1985-02-21 日本碍子株式会社 セラミツク焼成棚用支柱
JPS60116199U (ja) * 1983-12-02 1985-08-06 品川白煉瓦株式会社 窯業用焼成窯における断熱台車
JPS642150Y2 (de) * 1984-11-29 1989-01-18
ATE60430T1 (de) * 1986-06-10 1991-02-15 British Ceramic Service Co Oefen.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE528651A (de) *
US1963846A (en) * 1932-02-26 1934-06-19 Gen Electric Furnace
GB433497A (en) * 1934-07-14 1935-08-15 Bernard Joseph Moore Improvements in kiln trucks
US3168299A (en) * 1963-07-16 1965-02-02 Boyd C Miller Seal for tunnel kilns

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE528651A (de) *
US1963846A (en) * 1932-02-26 1934-06-19 Gen Electric Furnace
GB433497A (en) * 1934-07-14 1935-08-15 Bernard Joseph Moore Improvements in kiln trucks
US3168299A (en) * 1963-07-16 1965-02-02 Boyd C Miller Seal for tunnel kilns

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3834865A (en) * 1973-03-07 1974-09-10 Lincoln Mfg Co Dolly structure
US4243385A (en) * 1979-02-26 1981-01-06 Resco Products, Inc. End block
US4300881A (en) * 1980-02-01 1981-11-17 Salviata Impianti S.P.A. Truck or the like for conveying ceramic articles through a kiln
US4330267A (en) * 1980-11-17 1982-05-18 American Standard Inc. Kiln car
US4348175A (en) * 1980-11-17 1982-09-07 American Standard Inc. Kiln car
US4560350A (en) * 1984-03-29 1985-12-24 Resco Products, Inc. End block
US4721459A (en) * 1986-06-30 1988-01-26 Ferro Corporation Modular, insulating kiln car top
DE3821589A1 (de) * 1987-06-27 1989-01-05 Keller Ofenbau Gmbh Ofenwagen fuer einen tunnelofen der keramischen industrie
US5112223A (en) * 1991-03-04 1992-05-12 Dal-Tile Corporation Hollow load-bearing universal kiln car refractory modules
USRE39551E1 (en) 1995-05-09 2007-04-10 Burlodge Limited Food dispensing cycle and means
US5529488A (en) * 1995-07-14 1996-06-25 Norton Chemical Process Products Corp. Kiln car
WO2001050077A1 (de) * 2000-01-05 2001-07-12 Ceric Thermic Wistra Gmbh Tragende struktur für brennöfen mit sehr hoher brenntemperatur
US20100133220A1 (en) * 2008-12-01 2010-06-03 Ngk Insulators, Ltd. Shelf assembly for firing
US8784098B2 (en) * 2008-12-01 2014-07-22 Ngk Insulators, Ltd. Shelf assembly for firing
WO2012076319A1 (de) * 2010-12-09 2012-06-14 Saint-Gobain Industriekeramik Rödental GmbH Keramische platte für brennwagenaufbauten und feuerfestzustellungen
CN108285262A (zh) * 2018-02-09 2018-07-17 郑州旭飞光电科技有限公司 基板玻璃窑炉加料机定位装置
CN108285262B (zh) * 2018-02-09 2020-11-03 郑州旭飞光电科技有限公司 基板玻璃窑炉加料机定位装置

Also Published As

Publication number Publication date
GB1368073A (en) 1974-09-25
SE376299B (de) 1975-05-12
AU3815572A (en) 1973-07-26
DE2203360A1 (de) 1972-08-17
FR2124832A5 (de) 1972-09-22
JPS4828507A (de) 1973-04-16
ES399247A1 (es) 1975-06-01
IT948943B (it) 1973-06-11
BR7200427D0 (pt) 1973-05-24
DE2203360C3 (de) 1975-01-30
DE2203360B2 (de) 1974-06-12
AU471489B2 (en) 1976-04-29

Similar Documents

Publication Publication Date Title
US3759661A (en) Kiln cars
EP3355015B1 (de) Tragelement für einen tunnelofenwagen oder -schlitten, tunnelofenwagen oder -schlitten mit derartigen tragelementen sowie tunnelofen mit einem derartigen tunnelofenwagen oder -schlitten
US4836777A (en) Kiln cars
EP0208249B1 (de) Ofenwagen
US2118641A (en) Kiln furniture
JPS6349151B2 (de)
US4348175A (en) Kiln car
US4330267A (en) Kiln car
US4539919A (en) Supporting structures for furnace crowns
CN215566080U (zh) 一种轻量化疏散平台
GB2199124A (en) Kiln cars
US3363375A (en) Reinforced concrete cavity floor construction
DE3062156D1 (en) Building construction with plate girders
JPS6317997Y2 (de)
EP1136779B1 (de) Wagen zum Transport von Keramikrohlingen
JPS5851599Y2 (ja) 窯業炉用台車
CN103290946B (zh) 同寿期、自保温外墙与梁柱的构造及其施工方法
JPH0138480Y2 (de)
EP1240090B1 (de) Umhüllungssystem für förderer
JPS6246155Y2 (de)
DD161123A3 (de) Scheitrechte bewehrte feuerbetonrippenplatte fuer deckenkonstruktionen von hochtemperaturoefen
JPS6111110Y2 (de)
JPH0673693U (ja) 焼成台車
JPS642159Y2 (de)
US2736278A (en) Kiln and ceiling structure therefor

Legal Events

Date Code Title Description
AS Assignment

Owner name: STEETLEY ENGINEERING LIMITED

Free format text: CHANGE OF NAME;ASSIGNOR:GIBBONS BROTHERS, LIMITED;REEL/FRAME:003897/0808

Effective date: 19810713