US3481347A - Treatment apparatus - Google Patents

Treatment apparatus Download PDF

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Publication number
US3481347A
US3481347A US705212A US3481347DA US3481347A US 3481347 A US3481347 A US 3481347A US 705212 A US705212 A US 705212A US 3481347D A US3481347D A US 3481347DA US 3481347 A US3481347 A US 3481347A
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United States
Prior art keywords
treatment
workpieces
drum
vessel
drums
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Expired - Lifetime
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US705212A
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English (en)
Inventor
Sydney C Corbett
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Hockley Chemical Co Ltd
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Hockley Chemical Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/041—Cleaning travelling work
    • B08B3/042—Cleaning travelling work the loose articles or bulk material travelling gradually through a drum or other container, e.g. by helix or gravity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G49/00—Conveying systems characterised by their application for specified purposes not otherwise provided for
    • B65G49/02—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid
    • B65G49/04—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid the workpieces being immersed and withdrawn by movement in a vertical direction
    • B65G49/0409—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid the workpieces being immersed and withdrawn by movement in a vertical direction specially adapted for workpieces of definite length
    • B65G49/0413—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid the workpieces being immersed and withdrawn by movement in a vertical direction specially adapted for workpieces of definite length arrangements for conveyance through the bath
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G49/00—Conveying systems characterised by their application for specified purposes not otherwise provided for
    • B65G49/02—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid
    • B65G49/04—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid the workpieces being immersed and withdrawn by movement in a vertical direction
    • B65G49/0409—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid the workpieces being immersed and withdrawn by movement in a vertical direction specially adapted for workpieces of definite length
    • B65G49/0413—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid the workpieces being immersed and withdrawn by movement in a vertical direction specially adapted for workpieces of definite length arrangements for conveyance through the bath
    • B65G49/0422—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid the workpieces being immersed and withdrawn by movement in a vertical direction specially adapted for workpieces of definite length arrangements for conveyance through the bath screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G49/00—Conveying systems characterised by their application for specified purposes not otherwise provided for
    • B65G49/02—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid
    • B65G49/04—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid the workpieces being immersed and withdrawn by movement in a vertical direction
    • B65G49/0409—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid the workpieces being immersed and withdrawn by movement in a vertical direction specially adapted for workpieces of definite length
    • B65G49/0436—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid the workpieces being immersed and withdrawn by movement in a vertical direction specially adapted for workpieces of definite length arrangements for conveyance from bath to bath
    • B65G49/044—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid the workpieces being immersed and withdrawn by movement in a vertical direction specially adapted for workpieces of definite length arrangements for conveyance from bath to bath along a continuous circuit

Definitions

  • TREATMENT APPARATUS Filed Feb. 13, 1968 4 Sheets-Sheet 4 l I l I l l I l 'MvuTOEZ gYJWQ/ CHARMS CoRsTr AGGIJT United States Patent 3,481,347 TREATMENT APPARATUS Sydney C. Corbett, Birmingham, England, assignor to The Hockley Chemical Company Limited, Birmingham, England, a British Company Filed Feb. 13, 1968, Ser. No. 705,212 Claims priority, application Great Britain, Feb. 16, 1967, 7,375/ 67 Int. Cl. B08b 3/06 US. Cl.
  • This invention relates to treatment apparatus for carrying out various treatment operations such as, for example, cleaning, rinsing, bright dipping, chromating, phosphating, chemical blacking, pickling, descaling, drying, cooling etc.
  • the apparatus including one or more drums or like vessels adapted to have workpieces fed thereinto and to have workpieces discharged therefrom, the, or each, drum or like vessel being supported at the, or each, treatment station by a frame or the like in such a position relative to a member in which the selected treatment media is disposed and the construction of the drum being such that the workpieces contained therein are exposed to the media, such apparatus being hereinafter referred to as treatment apparatus of the kind specified.
  • One form of treatment apparatus of the kind specified has included a tippable basket at each treatment station and means have been provided whereby, on completion of a treatment operation at a station, the basket has been tipped to transfer the workpieces into a succeeding basket or to transfer the workpieces to a discharge station.
  • a workpiece containing vessel said vessel being of drum-like form, being adapted for rotation about the axis thereof and having peripheral apertures therein, each side 'wall having a central aperture and having secured thereto and extending laterally therefrom and in register with said aperture a hollow support spindle, one of said spindle, being the input spindle, being provided with means for receiving workpieces and feeding same into the vessel, the other spindle, being the output spindle, being provided with means for receiving the workpieces from the vessel and discharging same therefrom, the vessel being provided internally over a major portion of its circumferential arc with transverse baffles, to effect agitation of the workpieces in response to oscillation of the vessel and over a minor portion of its circumferential arc with a pick-up baflle whereby in response to complete rotation of the vessel the workpieces therein are picked up and passed to the outlet spindle.
  • FIGURE 1 is a view in side elevation, partly broken away of a complete treatment unit
  • FIGURE 2 is an enlarged broken View showing one of the treatment vessels
  • FIGURE 3 is an enlarged view showing the supporting means for the vessels
  • FIGURE 4 is an enlarged view showing means whereby the supporting tanks for the treatment media can be removed from the machine.
  • the apparatus provides seven treatment drums and may be used, for example, for carrying out a pickling operation.
  • the first stage 10 is the cleaning stage, the next 11 a rinsing stage followed by the pickling stages 12 and 13, one cold rinse stage 14 and a final hot rinse stage 15.
  • the apparatus includes a generally rectangular frame 16 which may conveniently be built up from angle or box section material which provides, as will presently be described, support for the various treatment drums 17, for the drive means therefor and for the hood 18 which extends over the apparatus.
  • a tank 19 in which the treatment solution is contained, these tanks 19 being in register with the treatment drums, the arrangement being such that the lower portion of each drum dips into the solution contained in the corresponding tank 19.
  • Each tank 19 is provided with pipe and valve work indicated generally at 20, whereby the solution may be re-circulated, passed to waste or passed for re-generation as may be desired.
  • Each drum 17, with the exception of the two drums at the first station 10, is connected to the preceding and succeeding drums by means of a hollow spindle 21, there being at the inlet end of the apparatus a loading chute or hopper 22 and at the other end a discharge chute 23.
  • spindles 21 are provided externally with a groove or track 24 which is adapted to locate on a pair of supporting rollers 25, one roller of each pair being itself supported from each side of the frame of the apparatus as will presently be described, means being provided for adjusting the position of these rollers so as to enable axial alignment of the drums to be achieved and maintained.
  • the drums During the course of treatment it is necessary for the drums to be both oscillated and rotated and, to this end, between stations and 11 and stations 14 and 15 the hollow spindle 21 has secured thereto a sprocket wheel 26 adapted to receive a driving chain driven by driving sprockets 27 secured on a driving shaft 28 which extends along one side of the apparatus and which is driven through the medium of a hydraulic motor, operation of which is controlled by an electric timing unit mounted in a control cabinet 29.
  • the hood 18 includes a number of transparent panels 30 provided with handles 31 so that not only can operation of the apparatus be seen through the hood but an individual panel can readily be removed if it is desired to carry out adjustments to the apparatus.
  • a vent 32 Associated with the hood 18 is a vent 32 adapted to be connected to a suitable extractor or to a flue whereby fumes, steam or other unwanted gaseous media can be withdrawn.
  • the purpose of providing two drums 17 mounted in direct side-by-side relationship at the cleaning station 10 is of course to enable the workpieces to be subjected to the cleaning media for twice the length of time that they are subjected to any of the successive treatment media.
  • each drum includes a pair of side walls 33, each of which is provided with a central opening 34 in register with which is secured the hollow spindle 21 so that there is an axial through passage throughout the whole of the apparatus.
  • the peripheral wall 35 Secured between the side walls 33 of each drum 17 is the peripheral wall 35 which, as will be seen, is of perforate form so as to enable the treatment media to enter that part of the drum which dips into the liquid in the corresponding tank, there being mounted on the inside face of the peripheral wall 35 a plurality of transversely extending baffles 36, each of which may be of V-section, these baflles being provided over the major circumferential arc of the drum.
  • each drum mounted in the remaining or minor circumferential arc portion thereof which will be that portion which is uppermost during the major part of the treatment cycle is a pick-up plate 37 with which is associated a downwardly inclined discharge plate 38, which plate 38 is in register with an inclined feed plate 39 mounted in the spindle 21 on the discharge or outlet side of the drum 17.
  • a similar feed plate 39 is mounted in the spindle 21 on the feed or input side of the drum 17 and this will be course be in register with the inclined plate 38 of the preceding drum.
  • the drum is caused to rotate through a complete revolution and during the course of such rotation the plate 37 will of course move into the lower position and as it passes through such lower position will pick up the workpieces and convey them upwardly whilst they are supported upon the plate until the drum returns to its previous position where the plate 37 is uppermost.
  • the workpieces will fall by gravity off the plate 37, will fall on to the inclined plate 4 38 and will thus be discharged from the drum on to the inclined plate 39 of the outlet spindle from which they will pass into the next succeeding drum or, in the case of the final treatment station, to the discharge chute 23.
  • drums are made of stainless steel and with a drum diameter of 2 feet 9 inches each drum can carry a load of 56 lbs. of workpieces and with a cycle time of 30 seconds at each treatment station a throughput of some 2 to 3 tons of Workpieces per hour can be achieved.
  • the loading tray or chute 22 is conveniently hinged adjacent its lower end to the frame 16 and is provided with spring or like support means whereby there may be obtained some visual or other indication that a given work load has been placed on the tray 22 so that an operator knows that a full work load is ready for loading into the machine.
  • the loading table or chute may be raised and lowered by coupling it to the hydraulic mechanism of the apparatus so that it can be moved between a work receiving position and a work feeding position in timed relationship to the operation of the apparatus as a Whole.
  • the driving sprockets 27 are mounted on a main driving shaft 40 which is driven by the hydraulic motor, which motor is controlled through a suitable hydraulic circuit from the electrical timer or control unit housed in the control cabinet 29, the control unit consisting basically of a cam whose movements both by way of oscillation and by way of rotation correspond to the desired movements of the drums, the cam operating during the course of its angular movements four micro-switches which are angularly spaced around the path of travel of the cam, these switches controlling the sequential operation of the hydraulic motor, the position of at least two of these switches being adjustable so as to enable one to select the degree of are through which oscillation of the drums shall take place.
  • each drum supporting roller 25 is mounted for rotation upon a spindle 41 which is provided with squared ends 42 which seat in square slots in the side walls 43 of a roller carrying block 44 which is mounted on one end of a shaft 45 which passes through a member of the frame 16 and which is in threaded engagement with a collar 46. Adjustment is by screw 47, the free end of which is provided with suitable flats for a spanner or like means whereby it can be rotated.
  • the roller supporting housing 43 and the roller 25 carried thereby can be moved toward or away from the longitudinal centre line of the apparatus so that if both rollers 25 of a pair are both adjusted inwardly they will raise the drum spindle 24 which is supported thereby or if they are moved away from one another the drum spindle will lower.
  • accurate alignment of all the drums may be achieved.
  • the roller can readily be replaced by just lifting it out of its housing and putting a fresh one in. Again if wear takes place on a roller, then the wear can be taken up and the axial alignment of the drum spindle restored by moving the roller inwardly toward the centre line of the machine.
  • each tank is provided with an apertured lug 48 as shown in FIGURE 4 which is adapted to receive the lower end of a rod 49 whose upper end 50 is screw threaded and upon which is mounted an internally threaded rotatable collar '51 which is associated with a block 52 which can be mounted over a member of the frame 16.
  • the tanks 19 rest on supporting brackets which are readily detachable from the frame of the apparatus so that when it is desired to remove a tank for maintenance purposes or for cleaning the tank a rod 49 and its associated components is engaged with the lug 48 on either side of the tank 19, the blocks 52 are located on the frame 16 and the threaded nuts 51 rotated so as to raise the tanks 19 clear of its supporting brackets.
  • the tanks can be removed with a minimum of interference with the apparatus as a whole.
  • the treatment drums are formed of steel, it is envisaged that these could well be formed of a suitable plastics material such as polypropylene and with such an apparatus for carrying out electroplating operations drums formed of polypropylene would be required.
  • the apparatus might comprise a single treatment barrel for carrying out basic rinsing or cleansing operations and with such an arrangement the internal bafile in the drum may be arranged so that during rotation of the drum in one direction the bafile will not pick up the workpieces but will only pick up and discharge upon rotation of the drum in the reverse direction.
  • the treatment which one wishes to give to the workpieces is such as to necessitate drying thereof
  • two further treatment drums could be provided after the final hot rinse stage referred to above, such further treatment drums being associated with means for blowing hot air through the drums so as to achieve the drying of the workpieces.
  • the workpieces may, after discharge from the treatment apparatus, be taken to a separate drying unit or the treatment apparatus can have associated therewith on the workshop floor a drying unit, the apparatus and the unit being so arranged that the workpieces are discharged direct from the apparatus into the drying unit.
  • the anodes can be suspended in the tank in the normal manner, i.e. as in an ordinary barrel plating machine.
  • the cathodic connections can be either danglers or inter-connected studs inside the barrel or drum, again common practice. Electrical connection to the studs or danglers will be via suitable brush gear mounted round the periphery of said hollow spindles.
  • Liquid treatment apparatus of the kind specified including an elongate frame, a plurality of aligned workpiece treatment vessels supported from said frame, each of said vessels being of drum-like form with a perforate circumferential wall supported bet-ween two side walls,
  • each side wall thereof formed with a central aperture and each side wall having secured thereto in register with the aperture therein a hollow spindle, adapted on the one hand to receive workpieces from a preceding station and to feed them into the vessel and, on the other hand, to receive workpieces from the vessel and discharge same therefrom, means, disposed within each vessel, for effecting agitation of the workpieces contained therein in response to limited angular movement of such vessel and means disposed within each vessel for effecting discharge of such workpieces therefrom in response to complete rotation of said vessel, said apparatus further including means for supporting the treatment liquid in operative relation to said vessels and means for effecting limited angular movement of said vessels and for effecting complete rotation thereof.
  • Treatment apparatus as claimed in claim 1 wherein means for effecting agitation of the workpieces in response to limited angular movement of the vessels comprises internal bafil-es extending transversely between the side walls of the vessel and mounted in abutting relationship with the circumferential wall thereof.
  • transverse baffles are of V section and wherein they are disposed around the major degree of arc of the vessel, the baffles being equi-angularly spaced from one another.
  • Treatment apparatus as claimed in claim 1 wherein means for effecting discharge of the workpieces in response to complete rotation of the vessels includes a pick-up baflle disposed within the minor degree of arc of the vessel and extending between the side walls thereof and into abutting relationship with the circumferential wall thereof and having mounted in operative relationship therewith a discharge bafile adapted to guide the workpieces toward the one central aperture.
  • each spindle includes an inclined baffle adapted to register with and receive workpieces from the discharge baflle of the treatment vessel.
  • Treatment apparatus as claimed in claim 1 wherein the circumferential wall of the vessel is perforate.
  • each vessel is made of polypropylene.
  • treatment apparatus as claimed in claim 1 wherein means for supporting the workpiece treatment vessels from the frame includes pairs of rollers, the rollers of each pair being supported from opposite sides of the frame, the rollers being mounted so as to engage and support the spindles intermediate the treatment vessels.
  • treatment apparatus as claimed in claim 8 wherein support means for each roller includes adjustment means for advancing each roller toward or away from the longitudinal axis of the apparatus.
  • the support means further includes a roller receiving cradle having a pair of spaced supporting arms each formed with recesses into which the ends of the roller supporting spindle can be non-rotatably located.
  • Treatment apparatus as claimed in claim 1 wherein means for effecting oscillation and complete rotation of the vessels includes sprocket wheels mounted on some of the spindles of the apparatus, said sprocket wheels being in chain drive communication with sprocket wheels said table being adapted to discharge into the first treatment vessel in response to predetermined load of workpieces being loaded thereon.
  • Treatment apparatus as claimed in claim 1 wherein the frame of the apparatus supports a hood extending over the treatment vessels and wherein the hood includes a number of transparent panels some of which are de- (tachable.
  • Treatment apparatus as claimed in claim 1 wherein means for supporting the treatment liquid in operative relation to the vessels includes a plurality of tanks adapted to contain the treatment liquid, the tanks :being supported from the frame of the apparatus and means being provided whereby said tanks can be indiyidually withdrawn without dis-assembly of the complete apparatus.

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  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
US705212A 1967-02-16 1968-02-13 Treatment apparatus Expired - Lifetime US3481347A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7375/67A GB1187832A (en) 1967-02-16 1967-02-16 Improvements in Apparatus for the Treatment of Articles with Fluids.

Publications (1)

Publication Number Publication Date
US3481347A true US3481347A (en) 1969-12-02

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ID=9831937

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Application Number Title Priority Date Filing Date
US705212A Expired - Lifetime US3481347A (en) 1967-02-16 1968-02-13 Treatment apparatus

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US (1) US3481347A (xx)
BE (1) BE710887A (xx)
DE (1) DE1696109C2 (xx)
FR (1) FR1555108A (xx)
GB (1) GB1187832A (xx)
NL (1) NL6802263A (xx)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3693639A (en) * 1969-10-27 1972-09-26 Hockley Chemical Co Ltd Apparatus for treating articles with liquid treatment media
EP0430460A2 (en) * 1989-11-29 1991-06-05 The BOC Group plc Cooling apparatus
US5211039A (en) * 1991-03-12 1993-05-18 Pellerin Milnor Corporation Continuous batch type washing machine
US5351804A (en) * 1992-02-29 1994-10-04 Karl Haberstroh Device for the transportation of objects
US20090233537A1 (en) * 2008-03-14 2009-09-17 Inventec Corporation Air baffle and calculation method of deformational stress thereof
CN102836838A (zh) * 2012-09-08 2012-12-26 战三红 一种节水清洗机
CN103028567A (zh) * 2011-09-30 2013-04-10 禤伟光 滚镀自动清洗装置
CN105200445A (zh) * 2015-09-16 2015-12-30 湖南中航精工有限公司 棒料清洗机
US20170335499A1 (en) * 2016-05-20 2017-11-23 Pellerin Milnor Corporation Combination flow tunnel
CN114427099A (zh) * 2022-01-26 2022-05-03 哈尔滨理工大学 一种轴承烧伤酸洗腐蚀检测设备及其震动机构和载料机构

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1260570B (it) * 1992-06-01 1996-04-16 Mario Reni Macchina per operazioni multiple di finitura di pezzi metallici
CN108060415B (zh) * 2018-01-23 2023-09-22 山东九佳紧固件股份有限公司 一种可烘干工件的发黑处理装置及其处理方法
NL2020880B1 (en) * 2018-05-04 2019-11-12 Unikon B V Method and machine for cleaning metal mesh type protective clothing

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US948679A (en) * 1908-03-03 1910-02-08 Heinrich Brandenburg Apparatus for extracting tin from tin-plate waste.
US3032043A (en) * 1958-05-13 1962-05-01 Detrex Chem Ind Rotary drum degreaser
US3078860A (en) * 1961-03-07 1963-02-26 Autosonics Inc Cleaning apparatus with closed air circulation system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2762620A (en) * 1952-07-05 1956-09-11 Metal & Thermit Corp Detinning apparatus
US3074068A (en) * 1961-10-03 1963-01-15 Ransohoff Company Cleaning and treating machine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US948679A (en) * 1908-03-03 1910-02-08 Heinrich Brandenburg Apparatus for extracting tin from tin-plate waste.
US3032043A (en) * 1958-05-13 1962-05-01 Detrex Chem Ind Rotary drum degreaser
US3078860A (en) * 1961-03-07 1963-02-26 Autosonics Inc Cleaning apparatus with closed air circulation system

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3693639A (en) * 1969-10-27 1972-09-26 Hockley Chemical Co Ltd Apparatus for treating articles with liquid treatment media
EP0430460A2 (en) * 1989-11-29 1991-06-05 The BOC Group plc Cooling apparatus
EP0430460A3 (en) * 1989-11-29 1991-08-14 The Boc Group Plc Cooling apparatus
US5211039A (en) * 1991-03-12 1993-05-18 Pellerin Milnor Corporation Continuous batch type washing machine
US5351804A (en) * 1992-02-29 1994-10-04 Karl Haberstroh Device for the transportation of objects
US20090233537A1 (en) * 2008-03-14 2009-09-17 Inventec Corporation Air baffle and calculation method of deformational stress thereof
CN103028567A (zh) * 2011-09-30 2013-04-10 禤伟光 滚镀自动清洗装置
CN102836838A (zh) * 2012-09-08 2012-12-26 战三红 一种节水清洗机
CN105200445A (zh) * 2015-09-16 2015-12-30 湖南中航精工有限公司 棒料清洗机
CN105200445B (zh) * 2015-09-16 2018-05-01 湖南中航精工有限公司 棒料清洗机
US20170335499A1 (en) * 2016-05-20 2017-11-23 Pellerin Milnor Corporation Combination flow tunnel
US11225742B2 (en) * 2016-05-20 2022-01-18 Pellerin Milnor Corporation Combination flow tunnel
CN114427099A (zh) * 2022-01-26 2022-05-03 哈尔滨理工大学 一种轴承烧伤酸洗腐蚀检测设备及其震动机构和载料机构

Also Published As

Publication number Publication date
NL6802263A (xx) 1968-08-19
GB1187832A (en) 1970-04-15
BE710887A (xx) 1968-07-01
DE1696109C2 (de) 1973-01-04
DE1696109B1 (de) 1972-05-31
FR1555108A (xx) 1969-01-24

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